home *** CD-ROM | disk | FTP | other *** search
- /* vi:set ts=8 sts=4 sw=4:
- *
- * VIM - Vi IMproved by Bram Moolenaar
- *
- * Do ":help uganda" in Vim to read copying and usage conditions.
- * Do ":help credits" in Vim to see a list of people who contributed.
- * See README.txt for an overview of the Vim source code.
- */
-
- /*
- * fileio.c: read from and write to a file
- */
-
- #if defined(MSDOS) || defined(WIN16) || defined(WIN32) || defined(_WIN64)
- # include <io.h> /* for lseek(), must be before vim.h */
- #endif
-
- #if defined __EMX__
- # include <io.h> /* for mktemp(), CJW 1997-12-03 */
- #endif
-
- #include "vim.h"
-
- #ifdef HAVE_FCNTL_H
- # include <fcntl.h>
- #endif
-
- #ifdef LATTICE
- # include <proto/dos.h> /* for Lock() and UnLock() */
- #endif
-
- #define BUFSIZE 8192 /* size of normal write buffer */
- #define SMBUFSIZE 256 /* size of emergency write buffer */
-
- #ifdef FEAT_CRYPT
- # define CRYPT_MAGIC "VimCrypt~01!" /* "01" is the version nr */
- # define CRYPT_MAGIC_LEN 12 /* must be multiple of 4! */
- #endif
-
- /* Is there any system that doesn't have access()? */
- #ifndef MACOS_CLASSIC /* Not available on MacOS 9 */
- # define USE_MCH_ACCESS
- #endif
-
- #ifdef FEAT_MBYTE
- static char_u *next_fenc __ARGS((char_u **pp));
- # ifdef FEAT_EVAL
- static char_u *readfile_charconvert __ARGS((char_u *fname, char_u *fenc, int *fdp));
- # endif
- #endif
- #ifdef FEAT_VIMINFO
- static void check_marks_read __ARGS((void));
- #endif
- #ifdef FEAT_CRYPT
- static char_u *check_for_cryptkey __ARGS((char_u *cryptkey, char_u *ptr, long *sizep, long *filesizep, int newfile));
- #endif
- #ifdef UNIX
- static void set_file_time __ARGS((char_u *fname, time_t atime, time_t mtime));
- #endif
- static void msg_add_fname __ARGS((buf_T *, char_u *));
- static int msg_add_fileformat __ARGS((int eol_type));
- static void msg_add_lines __ARGS((int, long, long));
- static void msg_add_eol __ARGS((void));
- static int check_mtime __ARGS((buf_T *buf, struct stat *s));
- static int time_differs __ARGS((long t1, long t2));
- #ifdef FEAT_AUTOCMD
- static int apply_autocmds_exarg __ARGS((EVENT_T event, char_u *fname, char_u *fname_io, int force, buf_T *buf, exarg_T *eap));
- #endif
-
- #if defined(FEAT_CRYPT) || defined(FEAT_MBYTE)
- # define HAS_BW_FLAGS
- # define FIO_LATIN1 0x01 /* convert Latin1 */
- # define FIO_UTF8 0x02 /* convert UTF-8 */
- # define FIO_UCS2 0x04 /* convert UCS-2 */
- # define FIO_UCS4 0x08 /* convert UCS-4 */
- # define FIO_UTF16 0x10 /* convert UTF-16 */
- # define FIO_ENDIAN_L 0x80 /* little endian */
- # define FIO_ENCRYPTED 0x1000 /* encrypt written bytes */
- # define FIO_NOCONVERT 0x2000 /* skip encoding conversion */
- # define FIO_UCSBOM 0x4000 /* check for BOM at start of file */
- # define FIO_ALL -1 /* allow all formats */
- #endif
-
- /* When converting, a read() or write() may leave some bytes to be converted
- * for the next call. The value is guessed... */
- #define CONV_RESTLEN 30
-
- /* We have to guess how much a sequence of bytes may expand when converting
- * with iconv() to be able to allocate a buffer. */
- #define ICONV_MULT 8
-
- /*
- * Structure to pass arguments from buf_write() to buf_write_bytes().
- */
- struct bw_info
- {
- int bw_fd; /* file descriptor */
- char_u *bw_buf; /* buffer with data to be written */
- int bw_len; /* lenght of data */
- #ifdef HAS_BW_FLAGS
- int bw_flags; /* FIO_ flags */
- #endif
- #ifdef FEAT_MBYTE
- char_u bw_rest[CONV_RESTLEN]; /* not converted bytes */
- int bw_restlen; /* nr of bytes in bw_rest[] */
- int bw_first; /* first write call */
- char_u *bw_conv_buf; /* buffer for writing converted chars */
- int bw_conv_buflen; /* size of bw_conv_buf */
- int bw_conv_error; /* set for conversion error */
- # ifdef USE_ICONV
- iconv_t bw_iconv_fd; /* descriptor for iconv() or -1 */
- # endif
- #endif
- };
-
- static int buf_write_bytes __ARGS((struct bw_info *ip));
-
- #ifdef FEAT_MBYTE
- static int ucs2bytes __ARGS((unsigned c, char_u **pp, int flags));
- static int same_encoding __ARGS((char_u *a, char_u *b));
- static int get_fio_flags __ARGS((char_u *ptr));
- static char_u *check_for_bom __ARGS((char_u *p, long size, int *lenp, int flags));
- static int make_bom __ARGS((char_u *buf, char_u *name));
- #endif
-
- static linenr_T write_no_eol_lnum = 0; /* non-zero lnum when last line of
- next binary write should not have
- an end-of-line */
-
- void
- filemess(buf, name, s, attr)
- buf_T *buf;
- char_u *name;
- char_u *s;
- int attr;
- {
- int msg_scroll_save;
-
- if (msg_silent != 0)
- return;
- msg_add_fname(buf, name); /* put file name in IObuff with quotes */
- /* If it's extremely long, truncate it. */
- if (STRLEN(IObuff) > IOSIZE - 80)
- IObuff[IOSIZE - 80] = NUL;
- STRCAT(IObuff, s);
- /*
- * For the first message may have to start a new line.
- * For further ones overwrite the previous one, reset msg_scroll before
- * calling filemess().
- */
- msg_scroll_save = msg_scroll;
- if (shortmess(SHM_OVERALL) && !exiting && p_verbose == 0)
- msg_scroll = FALSE;
- if (!msg_scroll) /* wait a bit when overwriting an error msg */
- check_for_delay(FALSE);
- msg_start();
- msg_scroll = msg_scroll_save;
- msg_scrolled_ign = TRUE;
- /* may truncate the message to avoid a hit-return prompt */
- msg_outtrans_attr(msg_may_trunc(FALSE, IObuff), attr);
- msg_clr_eos();
- out_flush();
- msg_scrolled_ign = FALSE;
- }
-
- /*
- * Read lines from file "fname" into the buffer after line "from".
- *
- * 1. We allocate blocks with lalloc, as big as possible.
- * 2. Each block is filled with characters from the file with a single read().
- * 3. The lines are inserted in the buffer with ml_append().
- *
- * (caller must check that fname != NULL, unless READ_STDIN is used)
- *
- * "lines_to_skip" is the number of lines that must be skipped
- * "lines_to_read" is the number of lines that are appended
- * When not recovering lines_to_skip is 0 and lines_to_read MAXLNUM.
- *
- * flags:
- * READ_NEW starting to edit a new buffer
- * READ_FILTER reading filter output
- * READ_STDIN read from stdin instead of a file
- * READ_BUFFER read from curbuf instead of a file (converting after reading
- * stdin)
- * READ_DUMMY read into a dummy buffer (to check if file contents changed)
- *
- * return FAIL for failure, OK otherwise
- */
- int
- readfile(fname, sfname, from, lines_to_skip, lines_to_read, eap, flags)
- char_u *fname;
- char_u *sfname;
- linenr_T from;
- linenr_T lines_to_skip;
- linenr_T lines_to_read;
- exarg_T *eap; /* can be NULL! */
- int flags;
- {
- int fd = 0;
- int newfile = (flags & READ_NEW);
- int check_readonly;
- int filtering = (flags & READ_FILTER);
- int read_stdin = (flags & READ_STDIN);
- int read_buffer = (flags & READ_BUFFER);
- linenr_T read_buf_lnum = 1; /* next line to read from curbuf */
- colnr_T read_buf_col = 0; /* next char to read from this line */
- char_u c;
- linenr_T lnum = from;
- char_u *ptr = NULL; /* pointer into read buffer */
- char_u *buffer = NULL; /* read buffer */
- char_u *new_buffer = NULL; /* init to shut up gcc */
- char_u *line_start = NULL; /* init to shut up gcc */
- int wasempty; /* buffer was empty before reading */
- colnr_T len;
- long size = 0;
- char_u *p;
- long filesize = 0;
- int skip_read = FALSE;
- #ifdef FEAT_CRYPT
- char_u *cryptkey = NULL;
- #endif
- int split = 0; /* number of split lines */
- #define UNKNOWN 0x0fffffff /* file size is unknown */
- linenr_T linecnt;
- int error = FALSE; /* errors encountered */
- int ff_error = EOL_UNKNOWN; /* file format with errors */
- long linerest = 0; /* remaining chars in line */
- #ifdef UNIX
- int perm = 0;
- #else
- int perm;
- #endif
- int fileformat = 0; /* end-of-line format */
- int keep_fileformat = FALSE;
- struct stat st;
- int file_readonly;
- linenr_T skip_count = 0;
- linenr_T read_count = 0;
- int msg_save = msg_scroll;
- linenr_T read_no_eol_lnum = 0; /* non-zero lnum when last line of
- * last read was missing the eol */
- int try_mac = (vim_strchr(p_ffs, 'm') != NULL);
- int try_dos = (vim_strchr(p_ffs, 'd') != NULL);
- int try_unix = (vim_strchr(p_ffs, 'x') != NULL);
- int file_rewind = FALSE;
- #ifdef FEAT_MBYTE
- int can_retry;
- int conv_error = FALSE; /* conversion error detected */
- char_u *tmpname = NULL; /* name of 'charconvert' output file */
- int fio_flags = 0;
- char_u *fenc; /* fileencoding to use */
- int fenc_alloced; /* fenc_next is in allocated memory */
- char_u *fenc_next = NULL; /* next item in 'fencs' or NULL */
- int advance_fenc = FALSE;
- long real_size = 0;
- # ifdef USE_ICONV
- iconv_t iconv_fd = (iconv_t)-1; /* descriptor for iconv() or -1 */
- # ifdef FEAT_EVAL
- int did_iconv = FALSE; /* TRUE when iconv() failed and trying
- 'charconvert' next */
- # endif
- # endif
- int converted = FALSE; /* TRUE if conversion done */
- int notconverted = FALSE; /* TRUE if conversion wanted but it
- wasn't possible */
- char_u conv_rest[CONV_RESTLEN];
- int conv_restlen = 0; /* nr of bytes in conv_rest[] */
- #endif
-
- #ifdef FEAT_AUTOCMD
- write_no_eol_lnum = 0; /* in case it was set by the previous read */
- #endif
-
- /*
- * If there is no file name yet, use the one for the read file.
- * BF_NOTEDITED is set to reflect this.
- * Don't do this for a read from a filter.
- * Only do this when 'cpoptions' contains the 'f' flag.
- */
- if (curbuf->b_ffname == NULL
- && !filtering
- && fname != NULL
- && vim_strchr(p_cpo, CPO_FNAMER) != NULL
- && !(flags & READ_DUMMY))
- {
- if (setfname(fname, sfname, FALSE) == OK)
- curbuf->b_flags |= BF_NOTEDITED;
- }
-
- /*
- * For Unix: Use the short file name whenever possible.
- * Avoids problems with networks and when directory names are changed.
- * Don't do this for MS-DOS, a "cd" in a sub-shell may have moved us to
- * another directory, which we don't detect.
- */
- if (sfname == NULL)
- sfname = fname;
- #if defined(UNIX) || defined(__EMX__)
- fname = sfname;
- #endif
-
- #ifdef FEAT_AUTOCMD
- /*
- * The BufReadCmd and FileReadCmd events intercept the reading process by
- * executing the associated commands instead.
- */
- if (!filtering && !read_stdin && !read_buffer)
- {
- pos_T pos;
-
- pos = curbuf->b_op_start;
-
- /* Set '[ mark to the line above where the lines go (line 1 if zero). */
- curbuf->b_op_start.lnum = ((from == 0) ? 1 : from);
- curbuf->b_op_start.col = 0;
-
- if (newfile)
- {
- if (apply_autocmds_exarg(EVENT_BUFREADCMD, NULL, sfname,
- FALSE, curbuf, eap))
- return OK;
- }
- else if (apply_autocmds_exarg(EVENT_FILEREADCMD, sfname, sfname,
- FALSE, NULL, eap))
- return OK;
-
- curbuf->b_op_start = pos;
- }
- #endif
-
- if ((shortmess(SHM_OVER) || curbuf->b_help) && p_verbose == 0)
- msg_scroll = FALSE; /* overwrite previous file message */
- else
- msg_scroll = TRUE; /* don't overwrite previous file message */
-
- /*
- * If the name ends in a path separator, we can't open it. Check here,
- * because reading the file may actually work, but then creating the swap
- * file may destroy it! Reported on MS-DOS and Win 95.
- * If the name is too long we might crash further on, quit here.
- */
- if (fname != NULL
- && *fname != NUL
- && (vim_ispathsep(*(fname + STRLEN(fname) - 1))
- || STRLEN(fname) >= MAXPATHL))
- {
- filemess(curbuf, fname, (char_u *)_("Illegal file name"), 0);
- msg_end();
- msg_scroll = msg_save;
- return FAIL;
- }
-
- #ifdef UNIX
- /*
- * On Unix it is possible to read a directory, so we have to
- * check for it before the mch_open().
- */
- if (!read_stdin && !read_buffer)
- {
- perm = mch_getperm(fname);
- if (perm >= 0 && !S_ISREG(perm) /* not a regular file ... */
- # ifdef S_ISFIFO
- && !S_ISFIFO(perm) /* ... or fifo */
- # endif
- # ifdef S_ISSOCK
- && !S_ISSOCK(perm) /* ... or socket */
- # endif
- )
- {
- if (S_ISDIR(perm))
- filemess(curbuf, fname, (char_u *)_("is a directory"), 0);
- else
- filemess(curbuf, fname, (char_u *)_("is not a file"), 0);
- msg_end();
- msg_scroll = msg_save;
- return FAIL;
- }
- }
- #endif
-
- /* set default 'fileformat' */
- if (newfile)
- {
- if (eap != NULL && eap->force_ff != 0)
- set_fileformat(get_fileformat_force(curbuf, eap), OPT_LOCAL);
- else if (*p_ffs != NUL)
- set_fileformat(default_fileformat(), OPT_LOCAL);
- }
-
- /*
- * When opening a new file we take the readonly flag from the file.
- * Default is r/w, can be set to r/o below.
- * Don't reset it when in readonly mode
- * Only set/reset b_p_ro when BF_CHECK_RO is set.
- */
- check_readonly = (newfile && (curbuf->b_flags & BF_CHECK_RO));
- if (check_readonly && !readonlymode) /* default: set file not readonly */
- curbuf->b_p_ro = FALSE;
-
- if (newfile && !read_stdin && !read_buffer)
- {
- /* Remember time of file.
- * For RISCOS, also remember the filetype.
- */
- if (mch_stat((char *)fname, &st) >= 0)
- {
- buf_store_time(curbuf, &st, fname);
- curbuf->b_mtime_read = curbuf->b_mtime;
-
- #if defined(RISCOS) && defined(FEAT_OSFILETYPE)
- /* Read the filetype into the buffer local filetype option. */
- mch_read_filetype(fname);
- #endif
- #ifdef UNIX
- /*
- * Set the protection bits of the swap file equal to the original
- * file. This makes it possible for others to read the name of the
- * original file from the swapfile.
- */
- if (curbuf->b_ml.ml_mfp->mf_fname != NULL)
- (void)mch_setperm(curbuf->b_ml.ml_mfp->mf_fname,
- (long)((st.st_mode & 0777) | 0600));
- #endif
- #ifdef MACOS_CLASSIC /* TODO: Is it need for MACOS_X? (Dany) */
- /* Get the FSSpec on MacOS
- * TODO: Update it properly when the buffer name changes
- */
- (void)GetFSSpecFromPath(curbuf->b_ffname, &curbuf->b_FSSpec);
- #endif
- #ifdef VMS
- curbuf->b_fab_rfm = st.st_fab_rfm;
- #endif
- }
- else
- {
- curbuf->b_mtime = 0;
- curbuf->b_mtime_read = 0;
- curbuf->b_orig_size = 0;
- curbuf->b_orig_mode = 0;
- }
-
- /* Reset the "new file" flag. It will be set again below when the
- * file doesn't exist. */
- curbuf->b_flags &= ~(BF_NEW | BF_NEW_W);
- }
-
- /*
- * for UNIX: check readonly with perm and mch_access()
- * for RISCOS: same as Unix, otherwise file gets re-datestamped!
- * for MSDOS and Amiga: check readonly by trying to open the file for writing
- */
- file_readonly = FALSE;
- if (read_stdin)
- {
- #if defined(MSDOS) || defined(MSWIN) || defined(OS2)
- /* Force binary I/O on stdin to avoid CR-LF -> LF conversion. */
- setmode(0, O_BINARY);
- #endif
- }
- else if (!read_buffer)
- {
- #ifdef USE_MCH_ACCESS
- if (
- # ifdef UNIX
- !(perm & 0222) ||
- # endif
- mch_access((char *)fname, W_OK))
- file_readonly = TRUE;
- fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0);
- #else
- if (!newfile
- || readonlymode
- || (fd = mch_open((char *)fname, O_RDWR | O_EXTRA, 0)) < 0)
- {
- file_readonly = TRUE;
- /* try to open ro */
- fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0);
- }
- #endif
- }
-
- if (fd < 0) /* cannot open at all */
- {
- #ifndef UNIX
- int isdir_f;
- #endif
- msg_scroll = msg_save;
- #ifndef UNIX
- /*
- * On MSDOS and Amiga we can't open a directory, check here.
- */
- isdir_f = (mch_isdir(fname));
- perm = mch_getperm(fname); /* check if the file exists */
- if (isdir_f)
- filemess(curbuf, sfname, (char_u *)_("is a directory"), 0);
- else
- #endif
- if (newfile)
- {
- if (perm < 0)
- {
- /*
- * Set the 'new-file' flag, so that when the file has
- * been created by someone else, a ":w" will complain.
- */
- curbuf->b_flags |= BF_NEW;
-
- /* Create a swap file now, so that other Vims are warned
- * that we are editing this file. Don't do this for a
- * "nofile" or "nowrite" buffer type. */
- #ifdef FEAT_QUICKFIX
- if (!bt_dontwrite(curbuf))
- #endif
- check_need_swap(newfile);
- filemess(curbuf, sfname, (char_u *)_("[New File]"), 0);
- #ifdef FEAT_VIMINFO
- /* Even though this is a new file, it might have been
- * edited before and deleted. Get the old marks. */
- check_marks_read();
- #endif
- #ifdef FEAT_AUTOCMD
- apply_autocmds_exarg(EVENT_BUFNEWFILE, sfname, sfname,
- FALSE, curbuf, eap);
- #endif
- /* remember the current fileformat */
- save_file_ff(curbuf);
-
- return OK; /* a new file is not an error */
- }
- else
- filemess(curbuf, sfname,
- (char_u *)_("[Permission Denied]"), 0);
- }
-
- return FAIL;
- }
-
- /*
- * Only set the 'ro' flag for readonly files the first time they are
- * loaded. Help files always get readonly mode
- */
- if ((check_readonly && file_readonly) || curbuf->b_help)
- curbuf->b_p_ro = TRUE;
-
- if (newfile)
- {
- curbuf->b_p_eol = TRUE;
- #ifdef FEAT_MBYTE
- curbuf->b_p_bomb = FALSE;
- #endif
- }
-
- /* Create a swap file now, so that other Vims are warned that we are
- * editing this file.
- * Don't do this for a "nofile" or "nowrite" buffer type. */
- #ifdef FEAT_QUICKFIX
- if (!bt_dontwrite(curbuf))
- #endif
- check_need_swap(newfile);
-
- #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
- /* If "Quit" selected at ATTENTION dialog, don't load the file */
- if (swap_exists_action == SEA_QUIT)
- {
- if (!read_buffer && !read_stdin)
- close(fd);
- return FAIL;
- }
- #endif
-
- ++no_wait_return; /* don't wait for return yet */
-
- /*
- * Set '[ mark to the line above where the lines go (line 1 if zero).
- */
- curbuf->b_op_start.lnum = ((from == 0) ? 1 : from);
- curbuf->b_op_start.col = 0;
-
- #ifdef FEAT_AUTOCMD
- if (!read_buffer)
- {
- int m = msg_scroll;
- int n = msg_scrolled;
- buf_T *old_curbuf = curbuf;
-
- /*
- * The file must be closed again, the autocommands may want to change
- * the file before reading it.
- */
- if (!read_stdin)
- close(fd); /* ignore errors */
-
- /*
- * The output from the autocommands should not overwrite anything and
- * should not be overwritten: Set msg_scroll, restore its value if no
- * output was done.
- */
- msg_scroll = TRUE;
- if (filtering)
- apply_autocmds_exarg(EVENT_FILTERREADPRE, NULL, sfname,
- FALSE, curbuf, eap);
- else if (read_stdin)
- apply_autocmds_exarg(EVENT_STDINREADPRE, NULL, sfname,
- FALSE, curbuf, eap);
- else if (newfile)
- apply_autocmds_exarg(EVENT_BUFREADPRE, NULL, sfname,
- FALSE, curbuf, eap);
- else
- apply_autocmds_exarg(EVENT_FILEREADPRE, sfname, sfname,
- FALSE, NULL, eap);
- if (msg_scrolled == n)
- msg_scroll = m;
-
- /*
- * Don't allow the autocommands to change the current buffer.
- * Try to re-open the file.
- */
- if (!read_stdin && (curbuf != old_curbuf
- || (fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0)) < 0))
- {
- --no_wait_return;
- msg_scroll = msg_save;
- if (fd < 0)
- EMSG(_("E200: *ReadPre autocommands made the file unreadable"));
- else
- EMSG(_("E201: *ReadPre autocommands must not change current buffer"));
- return FAIL;
- }
- }
- #endif /* FEAT_AUTOCMD */
-
- /* Autocommands may add lines to the file, need to check if it is empty */
- wasempty = (curbuf->b_ml.ml_flags & ML_EMPTY);
-
- if (!recoverymode && !filtering && !(flags & READ_DUMMY))
- {
- /*
- * Show the user that we are busy reading the input. Sometimes this
- * may take a while. When reading from stdin another program may
- * still be running, don't move the cursor to the last line, unless
- * always using the GUI.
- */
- if (read_stdin)
- {
- #ifndef ALWAYS_USE_GUI
- mch_msg(_("Vim: Reading from stdin...\n"));
- #endif
- #ifdef FEAT_GUI
- /* Also write a message in the GUI window, if there is one. */
- if (gui.in_use)
- {
- p = (char_u *)_("Reading from stdin...");
- gui_write(p, (int)STRLEN(p));
- }
- #endif
- }
- else if (!read_buffer)
- filemess(curbuf, sfname, (char_u *)"", 0);
- }
-
- msg_scroll = FALSE; /* overwrite the file message */
-
- /*
- * Set linecnt now, before the "retry" caused by a wrong guess for
- * fileformat, and after the autocommands, which may change them.
- */
- linecnt = curbuf->b_ml.ml_line_count;
-
- #ifdef FEAT_MBYTE
- /*
- * Decide which 'encoding' to use first.
- */
- if (eap != NULL && eap->force_enc != 0)
- {
- fenc = enc_canonize(eap->cmd + eap->force_enc);
- fenc_alloced = TRUE;
- }
- else if (curbuf->b_p_bin)
- {
- fenc = (char_u *)""; /* binary: don't convert */
- fenc_alloced = FALSE;
- }
- else if (*p_fencs == NUL)
- {
- fenc = curbuf->b_p_fenc; /* use format from buffer */
- fenc_alloced = FALSE;
- }
- else
- {
- fenc_next = p_fencs; /* try items in 'fileencodings' */
- fenc = next_fenc(&fenc_next);
- fenc_alloced = TRUE;
- }
- #endif
-
- /*
- * Jump back here to retry reading the file in different ways.
- * Reasons to retry:
- * - encoding conversion failed: try another one from "fenc_next"
- * - BOM detected and fenc was set, need to setup conversion
- * - "fileformat" check failed: try another
- *
- * Variables set for special retry actions:
- * "file_rewind" Rewind the file to start reading it again.
- * "advance_fenc" Advance "fenc" using "fenc_next".
- * "skip_read" Re-use already read bytes (BOM detected).
- * "did_iconv" iconv() conversion failed, try 'charconvert'.
- * "keep_fileformat" Don't reset "fileformat".
- *
- * Other status indicators:
- * "tmpname" When != NULL did conversion with 'charconvert'.
- * Output file has to be deleted afterwards.
- * "iconv_fd" When != -1 did conversion with iconv().
- */
- retry:
-
- if (file_rewind)
- {
- if (read_buffer)
- {
- read_buf_lnum = 1;
- read_buf_col = 0;
- }
- else if (read_stdin || lseek(fd, (off_t)0L, SEEK_SET) != 0)
- {
- /* Can't rewind the file, give up. */
- error = TRUE;
- goto failed;
- }
- /* Delete the previously read lines. */
- while (lnum > from)
- ml_delete(lnum--, FALSE);
- file_rewind = FALSE;
- #ifdef FEAT_MBYTE
- if (newfile)
- curbuf->b_p_bomb = FALSE;
- conv_error = FALSE;
- #endif
- }
-
- /*
- * When retrying with another "fenc" and the first time "fileformat"
- * will be reset.
- */
- if (keep_fileformat)
- keep_fileformat = FALSE;
- else
- {
- if (eap != NULL && eap->force_ff != 0)
- fileformat = get_fileformat_force(curbuf, eap);
- else if (curbuf->b_p_bin)
- fileformat = EOL_UNIX; /* binary: use Unix format */
- else if (*p_ffs == NUL)
- fileformat = get_fileformat(curbuf);/* use format from buffer */
- else
- fileformat = EOL_UNKNOWN; /* detect from file */
- }
-
- #ifdef FEAT_MBYTE
- # ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1)
- {
- /* aborted conversion with iconv(), close the descriptor */
- iconv_close(iconv_fd);
- iconv_fd = (iconv_t)-1;
- }
- # endif
-
- if (advance_fenc)
- {
- /*
- * Try the next entry in 'fileencodings'.
- */
- advance_fenc = FALSE;
-
- if (eap != NULL && eap->force_enc != 0)
- {
- /* Conversion given with "++cc=" wasn't possible, read
- * without conversion. */
- notconverted = TRUE;
- conv_error = FALSE;
- if (fenc_alloced)
- vim_free(fenc);
- fenc = (char_u *)"";
- fenc_alloced = FALSE;
- }
- else
- {
- if (fenc_alloced)
- vim_free(fenc);
- if (fenc_next != NULL)
- {
- fenc = next_fenc(&fenc_next);
- fenc_alloced = (fenc_next != NULL);
- }
- else
- {
- fenc = (char_u *)"";
- fenc_alloced = FALSE;
- }
- }
- if (tmpname != NULL)
- {
- mch_remove(tmpname); /* delete converted file */
- vim_free(tmpname);
- tmpname = NULL;
- }
- }
-
- /*
- * Conversion is required when the encoding of the file is different
- * from 'encoding' or 'encoding' is UTF-16, UCS-2 or UCS-4 (requires
- * conversion to UTF-8).
- */
- fio_flags = 0;
- converted = (*fenc != NUL && !same_encoding(p_enc, fenc));
- if (converted || enc_unicode != 0)
- {
-
- /* "ucs-bom" means we need to check the first bytes of the file
- * for a BOM. */
- if (STRCMP(fenc, ENC_UCSBOM) == 0)
- fio_flags = FIO_UCSBOM;
-
- /*
- * Check if UCS-2/4 or Latin1 to UTF-8 conversion needs to be
- * done. This is handled below after read(). Prepare the
- * fio_flags to avoid having to parse the string each time.
- * Also check for Unicode to Latin1 conversion, because iconv()
- * appears not to handle this correctly. This works just like
- * conversion to UTF-8 except how the resulting character is put in
- * the buffer.
- */
- else if (enc_utf8 || !has_mbyte)
- fio_flags = get_fio_flags(fenc);
-
- # ifdef USE_ICONV
- /*
- * Try using iconv() if we can't convert internally.
- */
- if (fio_flags == 0
- # ifdef FEAT_EVAL
- && !did_iconv
- # endif
- )
- iconv_fd = (iconv_t)my_iconv_open(
- enc_utf8 ? (char_u *)"utf-8" : p_enc, fenc);
- # endif
-
- # ifdef FEAT_EVAL
- /*
- * Use the 'charconvert' expression when conversion is required
- * and we can't do it internally or with iconv().
- */
- if (fio_flags == 0 && !read_stdin && !read_buffer && *p_ccv != NUL
- # ifdef USE_ICONV
- && iconv_fd == (iconv_t)-1
- # endif
- )
- {
- # ifdef USE_ICONV
- did_iconv = FALSE;
- # endif
- /* Skip conversion when it's already done (retry for wrong
- * "fileformat"). */
- if (tmpname == NULL)
- {
- tmpname = readfile_charconvert(fname, fenc, &fd);
- if (tmpname == NULL)
- {
- /* Conversion failed. Try another one. */
- advance_fenc = TRUE;
- if (fd < 0)
- {
- /* Re-opening the original file failed! */
- EMSG(_("E202: Conversion made file unreadable!"));
- error = TRUE;
- goto failed;
- }
- goto retry;
- }
- }
- }
- else
- # endif
- {
- if (fio_flags == 0
- # ifdef USE_ICONV
- && iconv_fd == (iconv_t)-1
- # endif
- )
- {
- /* Conversion wanted but we can't.
- * Try the next conversion in 'fileencodings' */
- advance_fenc = TRUE;
- goto retry;
- }
- }
- }
-
- /* Set can_retry when it's possible to rewind the file and try with
- * another "fenc" value. It's FALSE when no other "fenc" to try, reading
- * stdin or "fenc" was specified with "++enc=". */
- can_retry = (*fenc != NUL && !read_stdin
- && (eap == NULL || eap->force_enc == 0));
- #endif
-
- if (!skip_read)
- {
- linerest = 0;
- filesize = 0;
- skip_count = lines_to_skip;
- read_count = lines_to_read;
- #ifdef FEAT_MBYTE
- conv_restlen = 0;
- #endif
- }
-
- while (!error && !got_int)
- {
- /*
- * We allocate as much space for the file as we can get, plus
- * space for the old line plus room for one terminating NUL.
- * The amount is limited by the fact that read() only can read
- * upto max_unsigned characters (and other things).
- */
- #if SIZEOF_INT <= 2
- if (linerest >= 0x7ff0)
- {
- ++split;
- *ptr = NL; /* split line by inserting a NL */
- size = 1;
- }
- else
- #endif
- {
- if (!skip_read)
- {
- #if SIZEOF_INT > 2
- size = 0x10000L; /* use buffer >= 64K */
- #else
- size = 0x7ff0L - linerest; /* limit buffer to 32K */
- #endif
-
- for ( ; size >= 10; size = (long_u)size >> 1)
- {
- if ((new_buffer = lalloc((long_u)(size + linerest + 1),
- FALSE)) != NULL)
- break;
- }
- if (new_buffer == NULL)
- {
- do_outofmem_msg((long_u)(size * 2 + linerest + 1));
- error = TRUE;
- break;
- }
- if (linerest) /* copy characters from the previous buffer */
- mch_memmove(new_buffer, ptr - linerest, (size_t)linerest);
- vim_free(buffer);
- buffer = new_buffer;
- ptr = buffer + linerest;
- line_start = buffer;
-
- #ifdef FEAT_MBYTE
- /* May need room to translate into.
- * For iconv() we don't really know the required space, use a
- * factor ICONV_MULT.
- * latin1 to utf-8: 1 byte becomes up to 2 bytes
- * utf-16 to utf-8: 2 bytes become up to 3 bytes, 4 bytes
- * become up to 4 bytes, size must be multiple of 2
- * ucs-2 to utf-8: 2 bytes become up to 3 bytes, size must be
- * multiple of 2
- * ucs-4 to utf-8: 4 bytes become up to 6 bytes, size must be
- * multiple of 4 */
- real_size = size;
- # ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1)
- size = size / ICONV_MULT;
- else
- # endif
- if (fio_flags & FIO_LATIN1)
- size = size / 2;
- else if (fio_flags & (FIO_UCS2 | FIO_UTF16))
- size = (size * 2 / 3) & ~1;
- else if (fio_flags & FIO_UCS4)
- size = (size * 2 / 3) & ~3;
- else if (fio_flags == FIO_UCSBOM)
- size = size / ICONV_MULT; /* worst case */
- #endif
-
- #ifdef FEAT_MBYTE
- if (conv_restlen > 0)
- {
- /* Insert unconverted bytes from previous line. */
- mch_memmove(ptr, conv_rest, conv_restlen);
- ptr += conv_restlen;
- size -= conv_restlen;
- }
- #endif
-
- if (read_buffer)
- {
- /*
- * Read bytes from curbuf. Used for converting text read
- * from stdin.
- */
- if (read_buf_lnum > from)
- size = 0;
- else
- {
- int n;
- long tlen;
-
- tlen = 0;
- for (;;)
- {
- p = ml_get(read_buf_lnum) + read_buf_col;
- n = (int)STRLEN(p);
- if ((int)tlen + n + 1 > size)
- {
- /* Filled up to "size", append partial line. */
- n = size - tlen;
- mch_memmove(ptr + tlen, p, (size_t)n);
- read_buf_col += n;
- break;
- }
- else
- {
- /* Append whole line and new-line. */
- mch_memmove(ptr + tlen, p, (size_t)n);
- tlen += n;
- ptr[tlen++] = NL;
- read_buf_col = 0;
- if (++read_buf_lnum > from)
- {
- size = tlen;
- break;
- }
- }
- }
- }
- }
- else
- {
- /*
- * Read bytes from the file.
- */
- size = vim_read(fd, ptr, size);
- }
-
- if (size <= 0)
- {
- if (size < 0) /* read error */
- error = TRUE;
- #ifdef FEAT_MBYTE
- else if (conv_restlen > 0)
- /* some trailing bytes unconverted */
- conv_error = TRUE;
- #endif
- }
-
- #ifdef FEAT_CRYPT
- /*
- * At start of file: Check for magic number of encryption.
- */
- if (filesize == 0)
- cryptkey = check_for_cryptkey(cryptkey, ptr, &size,
- &filesize, newfile);
- /*
- * Decrypt the read bytes.
- */
- if (cryptkey != NULL && size > 0)
- for (p = ptr; p < ptr + size; ++p)
- ZDECODE(*p);
- #endif
- }
- skip_read = FALSE;
-
- #ifdef FEAT_MBYTE
- /*
- * At start of file (or after crypt magic number): Check for BOM.
- * Also check for a BOM for other Unicode encodings, but not after
- * converting with 'charconvert' or when a BOM has already been
- * found.
- */
- if ((filesize == 0
- # ifdef FEAT_CRYPT
- || (filesize == CRYPT_MAGIC_LEN && cryptkey != NULL)
- # endif
- )
- && (fio_flags == FIO_UCSBOM
- || (!curbuf->b_p_bomb
- && tmpname == NULL
- && (*fenc == 'u' || (*fenc == NUL && enc_utf8)))))
- {
- char_u *ccname;
- int blen;
-
- /* no BOM detection in a short file or in binary mode */
- if (size < 2 || curbuf->b_p_bin)
- ccname = NULL;
- else
- ccname = check_for_bom(ptr, size, &blen,
- fio_flags == FIO_UCSBOM ? FIO_ALL : get_fio_flags(fenc));
- if (ccname != NULL)
- {
- /* Remove BOM from the text */
- filesize += blen;
- size -= blen;
- mch_memmove(ptr, ptr + blen, (size_t)size);
- if (newfile)
- curbuf->b_p_bomb = TRUE;
- }
-
- if (fio_flags == FIO_UCSBOM)
- {
- if (ccname == NULL)
- {
- /* No BOM detected: retry with next encoding. */
- advance_fenc = TRUE;
- }
- else
- {
- /* BOM detected: set "fenc" and jump back */
- if (fenc_alloced)
- vim_free(fenc);
- fenc = ccname;
- fenc_alloced = FALSE;
- }
- /* retry reading without getting new bytes or rewinding */
- skip_read = TRUE;
- goto retry;
- }
- }
- #endif
- /*
- * Break here for a read error or end-of-file.
- */
- if (size <= 0)
- break;
-
- #ifdef FEAT_MBYTE
-
- /* Include not converted bytes. */
- ptr -= conv_restlen;
- size += conv_restlen;
- conv_restlen = 0;
-
- # ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1)
- {
- /*
- * Attempt conversion of the read bytes to 'encoding' using
- * iconv().
- */
- const char *fromp;
- char *top;
- size_t from_size;
- size_t to_size;
-
- fromp = (char *)ptr;
- from_size = size;
- ptr += size;
- top = (char *)ptr;
- to_size = real_size - size;
-
- /*
- * If there is conversion error or not enough room try using
- * another conversion.
- */
- if ((iconv(iconv_fd, &fromp, &from_size, &top, &to_size)
- == (size_t)-1 && ICONV_ERRNO != EINVAL)
- || from_size > CONV_RESTLEN)
- goto rewind_retry;
-
- if (from_size > 0)
- {
- /* Some remaining characters, keep them for the next
- * round. */
- mch_memmove(conv_rest, (char_u *)fromp, from_size);
- conv_restlen = (int)from_size;
- }
-
- /* move the linerest to before the converted characters */
- line_start = ptr - linerest;
- mch_memmove(line_start, buffer, (size_t)linerest);
- size = (long)((char_u *)top - ptr);
- }
- # endif
-
- if (fio_flags != 0)
- {
- int u8c;
- char_u *dest;
- char_u *tail = NULL;
-
- /*
- * "enc_utf8" set: Convert Unicode or Latin1 to UTF-8.
- * "enc_utf8" not set: Convert Unicode to Latin1.
- * Go from end to start through the buffer, because the number
- * of bytes may increase.
- * "dest" points to after where the UTF-8 bytes go, "p" points
- * to after the next character to convert.
- */
- dest = ptr + real_size;
- if (fio_flags == FIO_LATIN1 || fio_flags == FIO_UTF8)
- {
- p = ptr + size;
- if (fio_flags == FIO_UTF8)
- {
- /* Check for a trailing incomplete UTF-8 sequence */
- tail = ptr + size - 1;
- while (tail > ptr && (*tail & 0xc0) == 0x80)
- --tail;
- if (tail + utf_byte2len(*tail) <= ptr + size)
- tail = NULL;
- else
- p = tail;
- }
- }
- else if (fio_flags & (FIO_UCS2 | FIO_UTF16))
- {
- /* Check for a trailing byte */
- p = ptr + (size & ~1);
- if (size & 1)
- tail = p;
- if ((fio_flags & FIO_UTF16) && p > ptr)
- {
- /* Check for a trailing leading word */
- if (fio_flags & FIO_ENDIAN_L)
- {
- u8c = (*--p << 8);
- u8c += *--p;
- }
- else
- {
- u8c = *--p;
- u8c += (*--p << 8);
- }
- if (u8c >= 0xd800 && u8c <= 0xdbff)
- tail = p;
- else
- p += 2;
- }
- }
- else /* FIO_UCS4 */
- {
- /* Check for trailing 1, 2 or 3 bytes */
- p = ptr + (size & ~3);
- if (size & 3)
- tail = p;
- }
-
- /* If there is a trailing incomplete sequence move it to
- * conv_rest[]. */
- if (tail != NULL)
- {
- conv_restlen = (int)((ptr + size) - tail);
- mch_memmove(conv_rest, (char_u *)tail, conv_restlen);
- size -= conv_restlen;
- }
-
-
- while (p > ptr)
- {
- if (fio_flags & FIO_LATIN1)
- u8c = *--p;
- else if (fio_flags & (FIO_UCS2 | FIO_UTF16))
- {
- if (fio_flags & FIO_ENDIAN_L)
- {
- u8c = (*--p << 8);
- u8c += *--p;
- }
- else
- {
- u8c = *--p;
- u8c += (*--p << 8);
- }
- if ((fio_flags & FIO_UTF16)
- && u8c >= 0xdc00 && u8c <= 0xdfff)
- {
- int u16c;
-
- if (p == ptr)
- {
- /* Missing leading word. */
- if (can_retry)
- goto rewind_retry;
- conv_error = TRUE;
- }
-
- /* found second word of double-word, get the first
- * word and compute the resulting character */
- if (fio_flags & FIO_ENDIAN_L)
- {
- u16c = (*--p << 8);
- u16c += *--p;
- }
- else
- {
- u16c = *--p;
- u16c += (*--p << 8);
- }
- /* Check if the word is indeed a leading word. */
- if (u16c < 0xd800 || u16c > 0xdbff)
- {
- if (can_retry)
- goto rewind_retry;
- conv_error = TRUE;
- }
- u8c = 0x10000 + ((u16c & 0x3ff) << 10)
- + (u8c & 0x3ff);
- }
- }
- else if (fio_flags & FIO_UCS4)
- {
- if (fio_flags & FIO_ENDIAN_L)
- {
- u8c = (*--p << 24);
- u8c += (*--p << 16);
- u8c += (*--p << 8);
- u8c += *--p;
- }
- else /* big endian */
- {
- u8c = *--p;
- u8c += (*--p << 8);
- u8c += (*--p << 16);
- u8c += (*--p << 24);
- }
- }
- else /* UTF-8 */
- {
- if (*--p < 0x80)
- u8c = *p;
- else
- {
- len = utf_head_off(ptr, p);
- if (len == 0)
- {
- /* Not a valid UTF-8 character, retry with
- * another fenc when possible, otherwise just
- * report the error. */
- if (can_retry)
- goto rewind_retry;
- conv_error = TRUE;
- }
- p -= len;
- u8c = utf_ptr2char(p);
- }
- }
- if (enc_utf8) /* produce UTF-8 */
- {
- dest -= utf_char2len(u8c);
- (void)utf_char2bytes(u8c, dest);
- }
- else /* produce Latin1 */
- {
- --dest;
- if (u8c >= 0x100)
- {
- /* character doesn't fit in latin1, retry with
- * another fenc when possible, otherwise just
- * report the error. */
- if (can_retry)
- goto rewind_retry;
- *dest = 0xBF;
- conv_error = TRUE;
- }
- else
- *dest = u8c;
- }
- }
-
- /* move the linerest to before the converted characters */
- line_start = dest - linerest;
- mch_memmove(line_start, buffer, (size_t)linerest);
- size = (long)((ptr + real_size) - dest);
- ptr = dest;
- }
- else if (enc_utf8 && !conv_error && !curbuf->b_p_bin)
- {
- /* Converting to UTF-8: Check if the bytes are valid UTF-8.
- * Need to start before "ptr" when part of the character was
- * read in the previous read() call. */
- for (p = ptr - utf_head_off(buffer, ptr); p < ptr + size; ++p)
- {
- if (*p >= 0x80)
- {
- len = utf_ptr2len_check(p);
- /* A length of 1 means it's an illegal byte. Accept
- * an incomplete charater at the end though, the next
- * read() will get the next bytes, we'll check it
- * then. */
- if (len == 1)
- {
- p += utf_byte2len(*p) - 1;
- break;
- }
- p += len - 1;
- }
- }
- if (p < ptr + size)
- {
- /* Detected a UTF-8 error. */
- if (can_retry)
- {
- rewind_retry:
- /* Retry reading with another conversion. */
- # if defined(FEAT_EVAL) && defined(USE_ICONV)
- if (*p_ccv != NUL && iconv_fd != (iconv_t)-1)
- /* iconv() failed, try 'charconvert' */
- did_iconv = TRUE;
- else
- # endif
- /* use next item from 'fileencodings' */
- advance_fenc = TRUE;
- file_rewind = TRUE;
- goto retry;
- }
-
- /* There is no alternative fenc, just report the error. */
- conv_error = TRUE;
- }
- }
- #endif
-
- /* count the number of characters (after conversion!) */
- filesize += size;
-
- /*
- * when reading the first part of a file: guess EOL type
- */
- if (fileformat == EOL_UNKNOWN)
- {
- /* First try finding a NL, for Dos and Unix */
- if (try_dos || try_unix)
- {
- for (p = ptr; p < ptr + size; ++p)
- {
- if (*p == NL)
- {
- if (!try_unix
- || (try_dos && p > ptr && p[-1] == CR))
- fileformat = EOL_DOS;
- else
- fileformat = EOL_UNIX;
- break;
- }
- }
-
- /* Don't give in to EOL_UNIX if EOL_MAC is more likely */
- if (fileformat == EOL_UNIX && try_mac)
- {
- /* Need to reset the counters when retrying fenc. */
- try_mac = 1;
- try_unix = 1;
- for (; p >= ptr && *p != CR; p--)
- ;
- if (p >= ptr)
- {
- for (p = ptr; p < ptr + size; ++p)
- {
- if (*p == NL)
- try_unix++;
- else if (*p == CR)
- try_mac++;
- }
- if (try_mac > try_unix)
- fileformat = EOL_MAC;
- }
- }
- }
-
- /* No NL found: may use Mac format */
- if (fileformat == EOL_UNKNOWN && try_mac)
- fileformat = EOL_MAC;
-
- /* Still nothing found? Use first format in 'ffs' */
- if (fileformat == EOL_UNKNOWN)
- fileformat = default_fileformat();
-
- /* if editing a new file: may set p_tx and p_ff */
- if (newfile)
- set_fileformat(fileformat, OPT_LOCAL);
- }
- }
-
- /*
- * This loop is executed once for every character read.
- * Keep it fast!
- */
- if (fileformat == EOL_MAC)
- {
- --ptr;
- while (++ptr, --size >= 0)
- {
- /* catch most common case first */
- if ((c = *ptr) != NUL && c != CR && c != NL)
- continue;
- if (c == NUL)
- *ptr = NL; /* NULs are replaced by newlines! */
- else if (c == NL)
- *ptr = CR; /* NLs are replaced by CRs! */
- else
- {
- if (skip_count == 0)
- {
- *ptr = NUL; /* end of line */
- len = (colnr_T) (ptr - line_start + 1);
- if (ml_append(lnum, line_start, len, newfile) == FAIL)
- {
- error = TRUE;
- break;
- }
- ++lnum;
- if (--read_count == 0)
- {
- error = TRUE; /* break loop */
- line_start = ptr; /* nothing left to write */
- break;
- }
- }
- else
- --skip_count;
- line_start = ptr + 1;
- }
- }
- }
- else
- {
- --ptr;
- while (++ptr, --size >= 0)
- {
- if ((c = *ptr) != NUL && c != NL) /* catch most common case */
- continue;
- if (c == NUL)
- *ptr = NL; /* NULs are replaced by newlines! */
- else
- {
- if (skip_count == 0)
- {
- *ptr = NUL; /* end of line */
- len = (colnr_T)(ptr - line_start + 1);
- if (fileformat == EOL_DOS)
- {
- if (ptr[-1] == CR) /* remove CR */
- {
- ptr[-1] = NUL;
- --len;
- }
- /*
- * Reading in Dos format, but no CR-LF found!
- * When 'fileformats' includes "unix", delete all
- * the lines read so far and start all over again.
- * Otherwise give an error message later.
- */
- else if (ff_error != EOL_DOS)
- {
- if ( try_unix
- && !read_stdin
- && (read_buffer
- || lseek(fd, (off_t)0L, SEEK_SET) == 0))
- {
- fileformat = EOL_UNIX;
- if (newfile)
- set_fileformat(EOL_UNIX, OPT_LOCAL);
- file_rewind = TRUE;
- keep_fileformat = TRUE;
- goto retry;
- }
- ff_error = EOL_DOS;
- }
- }
- if (ml_append(lnum, line_start, len, newfile) == FAIL)
- {
- error = TRUE;
- break;
- }
- ++lnum;
- if (--read_count == 0)
- {
- error = TRUE; /* break loop */
- line_start = ptr; /* nothing left to write */
- break;
- }
- }
- else
- --skip_count;
- line_start = ptr + 1;
- }
- }
- }
- linerest = (long)(ptr - line_start);
- ui_breakcheck();
- }
-
- failed:
- /* not an error, max. number of lines reached */
- if (error && read_count == 0)
- error = FALSE;
-
- /*
- * If we get EOF in the middle of a line, note the fact and
- * complete the line ourselves.
- * In Dos format ignore a trailing CTRL-Z, unless 'binary' set.
- */
- if (!error
- && !got_int
- && linerest != 0
- && !(!curbuf->b_p_bin
- && fileformat == EOL_DOS
- && *line_start == Ctrl_Z
- && ptr == line_start + 1))
- {
- if (newfile) /* remember for when writing */
- curbuf->b_p_eol = FALSE;
- *ptr = NUL;
- if (ml_append(lnum, line_start,
- (colnr_T)(ptr - line_start + 1), newfile) == FAIL)
- error = TRUE;
- else
- read_no_eol_lnum = ++lnum;
- }
-
- if (newfile)
- save_file_ff(curbuf); /* remember the current file format */
-
- #ifdef FEAT_CRYPT
- if (cryptkey != curbuf->b_p_key)
- vim_free(cryptkey);
- #endif
-
- #ifdef FEAT_MBYTE
- /* If editing a new file: set 'fenc' for the current buffer. */
- if (newfile)
- set_string_option_direct((char_u *)"fenc", -1, fenc,
- OPT_FREE|OPT_LOCAL);
- if (fenc_alloced)
- vim_free(fenc);
- # ifdef USE_ICONV
- if (iconv_fd != (iconv_t)-1)
- {
- iconv_close(iconv_fd);
- iconv_fd = (iconv_t)-1;
- }
- # endif
- #endif
-
- if (!read_buffer && !read_stdin)
- close(fd); /* errors are ignored */
- vim_free(buffer);
-
- #ifdef HAVE_DUP
- if (read_stdin)
- {
- /* Use stderr for stdin, makes shell commands work. */
- close(0);
- dup(2);
- }
- #endif
-
- #ifdef FEAT_MBYTE
- if (tmpname != NULL)
- {
- mch_remove(tmpname); /* delete converted file */
- vim_free(tmpname);
- }
- #endif
- --no_wait_return; /* may wait for return now */
-
- /*
- * In recovery mode everything but autocommands is skipped.
- */
- if (!recoverymode)
- {
- /* need to delete the last line, which comes from the empty buffer */
- if (newfile && wasempty && !(curbuf->b_ml.ml_flags & ML_EMPTY))
- {
- ml_delete(curbuf->b_ml.ml_line_count, FALSE);
- --linecnt;
- }
- linecnt = curbuf->b_ml.ml_line_count - linecnt;
- if (filesize == 0)
- linecnt = 0;
- if (newfile || read_buffer)
- redraw_curbuf_later(NOT_VALID);
- else if (linecnt) /* appended at least one line */
- appended_lines_mark(from, linecnt);
-
- #ifdef FEAT_DIFF
- /* After reading the text into the buffer the diff info needs to be
- * updated. */
- if ((newfile || read_buffer))
- diff_invalidate();
- #endif
- #ifndef ALWAYS_USE_GUI
- /*
- * If we were reading from the same terminal as where messages go,
- * the screen will have been messed up.
- * Switch on raw mode now and clear the screen.
- */
- if (read_stdin)
- {
- settmode(TMODE_RAW); /* set to raw mode */
- starttermcap();
- screenclear();
- }
- #endif
-
- if (got_int)
- {
- if (!(flags & READ_DUMMY))
- filemess(curbuf, sfname, (char_u *)_(e_interr), 0);
- msg_scroll = msg_save;
- #ifdef FEAT_VIMINFO
- check_marks_read();
- #endif
- return OK; /* an interrupt isn't really an error */
- }
-
- if (!filtering && !(flags & READ_DUMMY))
- {
- msg_add_fname(curbuf, sfname); /* fname in IObuff with quotes */
- c = FALSE;
-
- #ifdef UNIX
- # ifdef S_ISFIFO
- if (S_ISFIFO(perm)) /* fifo or socket */
- {
- STRCAT(IObuff, _("[fifo/socket]"));
- c = TRUE;
- }
- # else
- # ifdef S_IFIFO
- if ((perm & S_IFMT) == S_IFIFO) /* fifo */
- {
- STRCAT(IObuff, _("[fifo]"));
- c = TRUE;
- }
- # endif
- # ifdef S_IFSOCK
- if ((perm & S_IFMT) == S_IFSOCK) /* or socket */
- {
- STRCAT(IObuff, _("[socket]"));
- c = TRUE;
- }
- # endif
- # endif
- #endif
- if (curbuf->b_p_ro)
- {
- STRCAT(IObuff, shortmess(SHM_RO) ? _("[RO]") : _("[readonly]"));
- c = TRUE;
- }
- if (read_no_eol_lnum)
- {
- msg_add_eol();
- c = TRUE;
- }
- if (ff_error == EOL_DOS)
- {
- STRCAT(IObuff, _("[CR missing]"));
- c = TRUE;
- }
- if (ff_error == EOL_MAC)
- {
- STRCAT(IObuff, _("[NL found]"));
- c = TRUE;
- }
- if (split)
- {
- STRCAT(IObuff, _("[long lines split]"));
- c = TRUE;
- }
- #ifdef FEAT_MBYTE
- if (notconverted)
- {
- STRCAT(IObuff, _("[NOT converted]"));
- c = TRUE;
- }
- else if (converted)
- {
- STRCAT(IObuff, _("[converted]"));
- c = TRUE;
- }
- #endif
- #ifdef FEAT_CRYPT
- if (cryptkey != NULL)
- {
- STRCAT(IObuff, _("[crypted]"));
- c = TRUE;
- }
- #endif
- #ifdef FEAT_MBYTE
- if (conv_error)
- {
- STRCAT(IObuff, _("[CONVERSION ERROR]"));
- c = TRUE;
- }
- else
- #endif
- if (error)
- {
- STRCAT(IObuff, _("[READ ERRORS]"));
- c = TRUE;
- }
- if (msg_add_fileformat(fileformat))
- c = TRUE;
- #ifdef FEAT_CRYPT
- if (cryptkey != NULL)
- msg_add_lines(c, (long)linecnt, filesize - CRYPT_MAGIC_LEN);
- else
- #endif
- msg_add_lines(c, (long)linecnt, filesize);
-
- vim_free(keep_msg);
- keep_msg = NULL;
- msg_scrolled_ign = TRUE;
- #ifdef ALWAYS_USE_GUI
- /* Don't show the message when reading stdin, it would end up in a
- * message box (which might be shown when exiting!) */
- if (read_stdin || read_buffer)
- p = msg_may_trunc(FALSE, IObuff);
- else
- #endif
- p = msg_trunc_attr(IObuff, FALSE, 0);
- if (read_stdin || read_buffer || restart_edit != 0
- || (msg_scrolled && !need_wait_return))
- {
- /* Need to repeat the message after redrawing when:
- * - When reading from stdin (the screen will be cleared next).
- * - When restart_edit is set (otherwise there will be a delay
- * before redrawing).
- * - When the screen was scrolled but there is no wait-return
- * prompt. */
- set_keep_msg(p);
- keep_msg_attr = 0;
- }
- msg_scrolled_ign = FALSE;
- }
-
- /* with errors writing the file requires ":w!" */
- if (newfile && (error
- #ifdef FEAT_MBYTE
- || conv_error
- #endif
- ))
- curbuf->b_p_ro = TRUE;
-
- u_clearline(); /* cannot use "U" command after adding lines */
-
- /*
- * In Ex mode: cursor at last new line.
- * Otherwise: cursor at first new line.
- */
- if (exmode_active)
- curwin->w_cursor.lnum = from + linecnt;
- else
- curwin->w_cursor.lnum = from + 1;
- check_cursor_lnum();
- beginline(BL_WHITE | BL_FIX); /* on first non-blank */
-
- /*
- * Set '[ and '] marks to the newly read lines.
- */
- curbuf->b_op_start.lnum = from + 1;
- curbuf->b_op_start.col = 0;
- curbuf->b_op_end.lnum = from + linecnt;
- curbuf->b_op_end.col = 0;
- }
- msg_scroll = msg_save;
-
- #ifdef FEAT_VIMINFO
- /*
- * Get the marks before executing autocommands, so they can be used there.
- */
- check_marks_read();
- #endif
-
- #ifdef FEAT_AUTOCMD
- /*
- * Trick: We remember if the last line of the read didn't have
- * an eol for when writing it again. This is required for
- * ":autocmd FileReadPost *.gz set bin|'[,']!gunzip" to work.
- */
- write_no_eol_lnum = read_no_eol_lnum;
-
- if (!read_stdin && !read_buffer)
- {
- int m = msg_scroll;
- int n = msg_scrolled;
-
- /*
- * The output from the autocommands should not overwrite anything and
- * should not be overwritten: Set msg_scroll, restore its value if no
- * output was done.
- */
- msg_scroll = TRUE;
- if (filtering)
- apply_autocmds_exarg(EVENT_FILTERREADPOST, NULL, sfname,
- FALSE, curbuf, eap);
- else if (newfile)
- apply_autocmds_exarg(EVENT_BUFREADPOST, NULL, sfname,
- FALSE, curbuf, eap);
- else
- apply_autocmds_exarg(EVENT_FILEREADPOST, sfname, sfname,
- FALSE, NULL, eap);
- if (msg_scrolled == n)
- msg_scroll = m;
- }
- #endif
-
- if (recoverymode && error)
- return FAIL;
- return OK;
- }
-
- /*
- * Fill "*eap" to force the 'fileencoding' and 'fileformat' to be equal to the
- * buffer "buf". Used for calling readfile().
- * Returns OK or FAIL.
- */
- int
- prep_exarg(eap, buf)
- exarg_T *eap;
- buf_T *buf;
- {
- eap->cmd = alloc((unsigned)(STRLEN(buf->b_p_ff)
- #ifdef FEAT_MBYTE
- + STRLEN(buf->b_p_fenc)
- #endif
- + 15));
- if (eap->cmd == NULL)
- return FAIL;
-
- #ifdef FEAT_MBYTE
- sprintf((char *)eap->cmd, "e ++ff=%s ++enc=%s", buf->b_p_ff, buf->b_p_fenc);
- eap->force_enc = 14 + (int)STRLEN(buf->b_p_ff);
- #else
- sprintf((char *)eap->cmd, "e ++ff=%s", buf->b_p_ff);
- #endif
- eap->force_ff = 7;
- return OK;
- }
-
- #ifdef FEAT_MBYTE
- /*
- * Find next fileencoding to use from 'fileencodings'.
- * "pp" points to fenc_next. It's advanced to the next item.
- * When there are no more items, an empty string is returned and *pp is set to
- * NULL.
- * When *pp is not set to NULL, the result is in allocated memory.
- */
- static char_u *
- next_fenc(pp)
- char_u **pp;
- {
- char_u *p;
- char_u *r;
-
- if (**pp == NUL)
- {
- *pp = NULL;
- return (char_u *)"";
- }
- p = vim_strchr(*pp, ',');
- if (p == NULL)
- {
- r = enc_canonize(*pp);
- *pp += STRLEN(*pp);
- }
- else
- {
- r = vim_strnsave(*pp, (int)(p - *pp));
- *pp = p + 1;
- if (r != NULL)
- {
- p = enc_canonize(r);
- vim_free(r);
- r = p;
- }
- }
- if (r == NULL) /* out of memory */
- {
- r = (char_u *)"";
- *pp = NULL;
- }
- return r;
- }
-
- # ifdef FEAT_EVAL
- /*
- * Convert a file with the 'charconvert' expression.
- * This closes the file which is to be read, converts it and opens the
- * resulting file for reading.
- * Returns name of the resulting converted file (the caller should delete it
- * after reading it).
- * Returns NULL if the conversion failed ("*fdp" is not set) .
- */
- static char_u *
- readfile_charconvert(fname, fenc, fdp)
- char_u *fname; /* name of input file */
- char_u *fenc; /* converted from */
- int *fdp; /* in/out: file descriptor of file */
- {
- char_u *tmpname;
- char_u *errmsg = NULL;
-
- tmpname = vim_tempname('r');
- if (tmpname == NULL)
- errmsg = (char_u *)_("Can't find temp file for conversion");
- else
- {
- close(*fdp); /* close the input file, ignore errors */
- *fdp = -1;
- if (eval_charconvert(fenc, enc_utf8 ? (char_u *)"utf-8" : p_enc,
- fname, tmpname) == FAIL)
- errmsg = (char_u *)_("Conversion with 'charconvert' failed");
- if (errmsg == NULL && (*fdp = mch_open((char *)tmpname,
- O_RDONLY | O_EXTRA, 0)) < 0)
- errmsg = (char_u *)_("can't read output of 'charconvert'");
- }
-
- if (errmsg != NULL)
- {
- /* Don't use emsg(), it breaks mappings, the retry with
- * another type of conversion might still work. */
- MSG(errmsg);
- if (tmpname != NULL)
- {
- mch_remove(tmpname); /* delete converted file */
- vim_free(tmpname);
- tmpname = NULL;
- }
- }
-
- /* If the input file is closed, open it (caller should check for error). */
- if (*fdp < 0)
- *fdp = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0);
-
- return tmpname;
- }
- # endif
-
- #endif
-
- #ifdef FEAT_VIMINFO
- static void
- check_marks_read()
- {
- if (!curbuf->b_marks_read && get_viminfo_parameter('\'') > 0)
- {
- read_viminfo(NULL, FALSE, TRUE, FALSE);
- curbuf->b_marks_read = TRUE;
- }
- }
- #endif
-
- #ifdef FEAT_CRYPT
- /*
- * Check for magic number used for encryption.
- * If found, the magic number is removed from ptr[*sizep] and *sizep and
- * *filesizep are updated.
- * Return the (new) encryption key, NULL for no encryption.
- */
- static char_u *
- check_for_cryptkey(cryptkey, ptr, sizep, filesizep, newfile)
- char_u *cryptkey; /* previous encryption key or NULL */
- char_u *ptr; /* pointer to read bytes */
- long *sizep; /* length of read bytes */
- long *filesizep; /* nr of bytes used from file */
- int newfile; /* editing a new buffer */
- {
- if (*sizep >= CRYPT_MAGIC_LEN
- && STRNCMP(ptr, CRYPT_MAGIC, CRYPT_MAGIC_LEN) == 0)
- {
- if (cryptkey == NULL)
- {
- if (*curbuf->b_p_key)
- cryptkey = curbuf->b_p_key;
- else
- {
- /* When newfile is TRUE, store the typed key
- * in the 'key' option and don't free it. */
- cryptkey = get_crypt_key(newfile, FALSE);
- /* check if empty key entered */
- if (cryptkey != NULL && *cryptkey == NUL)
- {
- if (cryptkey != curbuf->b_p_key)
- vim_free(cryptkey);
- cryptkey = NULL;
- }
- }
- }
-
- if (cryptkey != NULL)
- {
- crypt_init_keys(cryptkey);
-
- /* Remove magic number from the text */
- *filesizep += CRYPT_MAGIC_LEN;
- *sizep -= CRYPT_MAGIC_LEN;
- mch_memmove(ptr, ptr + CRYPT_MAGIC_LEN, (size_t)*sizep);
- }
- }
- /* When starting to edit a new file which does not have
- * encryption, clear the 'key' option, except when
- * starting up (called with -x argument) */
- else if (newfile && *curbuf->b_p_key && !starting)
- set_option_value((char_u *)"key", 0L, (char_u *)"", OPT_LOCAL);
-
- return cryptkey;
- }
- #endif
-
- #ifdef UNIX
- static void
- set_file_time(fname, atime, mtime)
- char_u *fname;
- time_t atime; /* access time */
- time_t mtime; /* modification time */
- {
- # if defined(HAVE_UTIME) && defined(HAVE_UTIME_H)
- # include <utime.h>
-
- struct utimbuf buf;
-
- buf.actime = atime;
- buf.modtime = mtime;
- (void)utime((char *)fname, &buf);
- # else
- # if defined(HAVE_UTIMES)
-
- struct timeval tvp[2];
-
- tvp[0].tv_sec = atime;
- tvp[0].tv_usec = 0;
- tvp[1].tv_sec = mtime;
- tvp[1].tv_usec = 0;
- # ifdef NeXT
- (void)utimes((char *)fname, tvp);
- # else
- (void)utimes((char *)fname, &tvp);
- # endif
- # endif
- # endif
- }
- #endif /* UNIX */
-
- /*
- * buf_write() - write to file 'fname' lines 'start' through 'end'
- *
- * We do our own buffering here because fwrite() is so slow.
- *
- * If forceit is true, we don't care for errors when attempting backups (jw).
- * In case of an error everything possible is done to restore the original file.
- * But when forceit is TRUE, we risk loosing it.
- * When reset_changed is TRUE and start == 1 and end ==
- * curbuf->b_ml.ml_line_count, reset curbuf->b_changed.
- *
- * This function must NOT use NameBuff (because it's called by autowrite()).
- *
- * return FAIL for failure, OK otherwise
- */
- int
- buf_write(buf, fname, sfname, start, end, eap, append, forceit,
- reset_changed, filtering)
- buf_T *buf;
- char_u *fname;
- char_u *sfname;
- linenr_T start, end;
- exarg_T *eap; /* for forced 'ff' and 'fenc', can be
- NULL! */
- int append;
- int forceit;
- int reset_changed;
- int filtering;
- {
- int fd;
- char_u *backup = NULL;
- int backup_copy = FALSE; /* copy the original file? */
- int dobackup;
- char_u *ffname;
- char_u *wfname; /* name of file to write to */
- char_u *s;
- char_u *ptr;
- char_u c;
- int len;
- linenr_T lnum;
- long nchars;
- char_u *errmsg = NULL;
- char_u *buffer;
- char_u smallbuf[SMBUFSIZE];
- char_u *backup_ext;
- int bufsize;
- long perm; /* file permissions */
- int retval = OK;
- int newfile = FALSE; /* TRUE if file doesn't exist yet */
- int msg_save = msg_scroll;
- int overwriting; /* TRUE if writing over original */
- int no_eol = FALSE; /* no end-of-line written */
- int device = FALSE; /* writing to a device */
- struct stat st_old;
- int prev_got_int = got_int;
- #if defined(UNIX) || defined(__EMX__XX) /*XXX fix me sometime? */
- int made_writable = FALSE; /* 'w' bit has been set */
- #endif
- #ifdef VMS
- char_u nfname[MAXPATHL];
- #endif
- /* writing everything */
- int whole = (start == 1 && end == buf->b_ml.ml_line_count);
- #ifdef FEAT_AUTOCMD
- linenr_T old_line_count = buf->b_ml.ml_line_count;
- #endif
- int attr;
- int fileformat;
- struct bw_info write_info; /* info for buf_write_bytes() */
- #ifdef FEAT_MBYTE
- int converted = FALSE;
- int notconverted = FALSE;
- char_u *fenc; /* effective 'fileencoding' */
- char_u *fenc_tofree = NULL; /* allocated "fenc" */
- #endif
- #ifdef HAS_BW_FLAGS
- int wb_flags = 0;
- #endif
- #ifdef HAVE_ACL
- vim_acl_T acl = NULL; /* ACL copied from original file to
- backup or new file */
- #endif
-
- if (fname == NULL || *fname == NUL) /* safety check */
- return FAIL;
-
- /*
- * Disallow writing from .exrc and .vimrc in current directory for
- * security reasons.
- */
- if (check_secure())
- return FAIL;
-
- /* Avoid a crash for a long name. */
- if (STRLEN(fname) >= MAXPATHL)
- {
- EMSG(_(e_longname));
- return FAIL;
- }
-
- #ifdef FEAT_MBYTE
- /* must init bw_conv_buf and bw_iconv_fd before jumping to "fail" */
- write_info.bw_conv_buf = NULL;
- write_info.bw_conv_error = FALSE;
- write_info.bw_restlen = 0;
- # ifdef USE_ICONV
- write_info.bw_iconv_fd = (iconv_t)-1;
- # endif
- #endif
-
- /*
- * If there is no file name yet, use the one for the written file.
- * BF_NOTEDITED is set to reflect this (in case the write fails).
- * Don't do this when the write is for a filter command.
- * Only do this when 'cpoptions' contains the 'f' flag.
- */
- if (reset_changed
- && whole
- && buf == curbuf
- && curbuf->b_ffname == NULL
- && !filtering
- && vim_strchr(p_cpo, CPO_FNAMEW) != NULL)
- {
- #ifdef FEAT_AUTOCMD
- /* It's like the unnamed buffer is deleted.... */
- if (curbuf->b_p_bl)
- apply_autocmds(EVENT_BUFDELETE, NULL, NULL, FALSE, curbuf);
- apply_autocmds(EVENT_BUFWIPEOUT, NULL, NULL, FALSE, curbuf);
- #endif
- if (setfname(fname, sfname, FALSE) == OK)
- curbuf->b_flags |= BF_NOTEDITED;
- #ifdef FEAT_AUTOCMD
- /* ....and a new named one is created */
- apply_autocmds(EVENT_BUFNEW, NULL, NULL, FALSE, curbuf);
- if (curbuf->b_p_bl)
- apply_autocmds(EVENT_BUFADD, NULL, NULL, FALSE, curbuf);
- #endif
- }
-
- if (sfname == NULL)
- sfname = fname;
- /*
- * For Unix: Use the short file name whenever possible.
- * Avoids problems with networks and when directory names are changed.
- * Don't do this for MS-DOS, a "cd" in a sub-shell may have moved us to
- * another directory, which we don't detect
- */
- ffname = fname; /* remember full fname */
- #ifdef UNIX
- fname = sfname;
- #endif
-
- /* make sure we have a valid backup extension to use */
- if (*p_bex == NUL)
- #ifdef RISCOS
- backup_ext = (char_u *)"/bak";
- #else
- backup_ext = (char_u *)".bak";
- #endif
- else
- backup_ext = p_bex;
-
- if (buf->b_ffname != NULL && fnamecmp(ffname, buf->b_ffname) == 0)
- overwriting = TRUE;
- else
- overwriting = FALSE;
-
- if (exiting)
- settmode(TMODE_COOK); /* when exiting allow typahead now */
-
- ++no_wait_return; /* don't wait for return yet */
-
- /*
- * Set '[ and '] marks to the lines to be written.
- */
- buf->b_op_start.lnum = start;
- buf->b_op_start.col = 0;
- buf->b_op_end.lnum = end;
- buf->b_op_end.col = 0;
-
- #ifdef FEAT_AUTOCMD
- {
- aco_save_T aco;
- int buf_ffname = FALSE;
- int buf_sfname = FALSE;
- int buf_fname_f = FALSE;
- int buf_fname_s = FALSE;
- int did_cmd = FALSE;
-
- /*
- * Apply PRE aucocommands.
- * Set curbuf to the buffer to be written.
- * Careful: The autocommands may call buf_write() recursively!
- */
- if (ffname == buf->b_ffname)
- buf_ffname = TRUE;
- if (sfname == buf->b_sfname)
- buf_sfname = TRUE;
- if (fname == buf->b_ffname)
- buf_fname_f = TRUE;
- if (fname == buf->b_sfname)
- buf_fname_s = TRUE;
-
- /* set curwin/curbuf to buf and save a few things */
- aucmd_prepbuf(&aco, buf);
-
- if (append)
- {
- if (!(did_cmd = apply_autocmds_exarg(EVENT_FILEAPPENDCMD,
- fname, fname, FALSE, curbuf, eap)))
- apply_autocmds_exarg(EVENT_FILEAPPENDPRE,
- fname, fname, FALSE, curbuf, eap);
- }
- else if (filtering)
- {
- apply_autocmds_exarg(EVENT_FILTERWRITEPRE,
- NULL, fname, FALSE, curbuf, eap);
- }
- else if (reset_changed && whole)
- {
- if (!(did_cmd = apply_autocmds_exarg(EVENT_BUFWRITECMD,
- fname, fname, FALSE, curbuf, eap)))
- apply_autocmds_exarg(EVENT_BUFWRITEPRE,
- fname, fname, FALSE, curbuf, eap);
- }
- else
- {
- if (!(did_cmd = apply_autocmds_exarg(EVENT_FILEWRITECMD,
- fname, fname, FALSE, curbuf, eap)))
- apply_autocmds_exarg(EVENT_FILEWRITEPRE,
- fname, fname, FALSE, curbuf, eap);
- }
-
- /* restore curwin/curbuf and a few other things */
- aucmd_restbuf(&aco);
-
- /*
- * In two situations we return here and don't write the file:
- * 1. the autocommands deleted or unloaded the buffer.
- * 2. If one of the "Cmd" autocommands was executed.
- */
- if (!buf_valid(buf) || buf->b_ml.ml_mfp == NULL || did_cmd)
- {
- --no_wait_return;
- msg_scroll = msg_save;
- if (did_cmd)
- {
- if (!exiting && overwriting)
- {
- /* Assume the buffer was written, update the timestamp. */
- ml_timestamp(buf);
- buf->b_flags &= ~BF_WRITE_MASK;
- }
- return OK;
- }
- EMSG(_("E203: Autocommands deleted or unloaded buffer to be written"));
- return FAIL;
- }
-
- /*
- * The autocommands may have changed the number of lines in the file.
- * When writing the whole file, adjust the end.
- * When writing part of the file, assume that the autocommands only
- * changed the number of lines that are to be written (tricky!).
- */
- if (buf->b_ml.ml_line_count != old_line_count)
- {
- if (whole) /* write all */
- end = buf->b_ml.ml_line_count;
- else if (buf->b_ml.ml_line_count > old_line_count) /* more lines */
- end += buf->b_ml.ml_line_count - old_line_count;
- else /* less lines */
- {
- end -= old_line_count - buf->b_ml.ml_line_count;
- if (end < start)
- {
- --no_wait_return;
- msg_scroll = msg_save;
- EMSG(_("E204: Autocommand changed number of lines in unexpected way"));
- return FAIL;
- }
- }
- }
-
- /*
- * The autocommands may have changed the name of the buffer, which may
- * be kept in fname, ffname and sfname.
- */
- if (buf_ffname)
- ffname = buf->b_ffname;
- if (buf_sfname)
- sfname = buf->b_sfname;
- if (buf_fname_f)
- fname = buf->b_ffname;
- if (buf_fname_s)
- fname = buf->b_sfname;
- }
- #endif
-
- if (shortmess(SHM_OVER) && !exiting)
- msg_scroll = FALSE; /* overwrite previous file message */
- else
- msg_scroll = TRUE; /* don't overwrite previous file message */
- if (!filtering)
- filemess(buf,
- #ifndef UNIX
- sfname,
- #else
- fname,
- #endif
- (char_u *)"", 0); /* show that we are busy */
- msg_scroll = FALSE; /* always overwrite the file message now */
-
- buffer = alloc(BUFSIZE);
- if (buffer == NULL) /* can't allocate big buffer, use small
- * one (to be able to write when out of
- * memory) */
- {
- buffer = smallbuf;
- bufsize = SMBUFSIZE;
- }
- else
- bufsize = BUFSIZE;
-
- /*
- * Get information about original file (if there is one).
- */
- #if defined(UNIX) && !defined(ARCHIE)
- st_old.st_dev = st_old.st_ino = 0;
- perm = -1;
- if (mch_stat((char *)fname, &st_old) < 0)
- newfile = TRUE;
- else
- {
- perm = st_old.st_mode;
- if (!S_ISREG(st_old.st_mode)) /* not a file */
- {
- if (S_ISDIR(st_old.st_mode))
- {
- errmsg = (char_u *)_("is a directory");
- goto fail;
- }
- if (mch_nodetype(fname) != NODE_WRITABLE)
- {
- errmsg = (char_u *)_("is not a file or writable device");
- goto fail;
- }
- /* It's a device of some kind (or a fifo) which we can write to
- * but for which we can't make a backup. */
- device = TRUE;
- newfile = TRUE;
- perm = -1;
- }
- }
- #else /* !UNIX */
- /*
- * Check for a writable device name.
- */
- c = mch_nodetype(fname);
- if (c == NODE_OTHER)
- {
- errmsg = (char_u *)_("is not a file or writable device");
- goto fail;
- }
- if (c == NODE_WRITABLE)
- {
- device = TRUE;
- newfile = TRUE;
- perm = -1;
- }
- else
- {
- perm = mch_getperm(fname);
- if (perm < 0)
- newfile = TRUE;
- else if (mch_isdir(fname))
- {
- errmsg = (char_u *)_("is a directory");
- goto fail;
- }
- if (overwriting)
- (void)mch_stat((char *)fname, &st_old);
- }
- #endif /* !UNIX */
-
- if (!device && !newfile)
- {
- /*
- * Check if the file is really writable (when renaming the file to
- * make a backup we won't discover it later).
- */
- if (!forceit && (
- # ifdef USE_MCH_ACCESS
- # ifdef UNIX
- (perm & 0222) == 0 ||
- # endif
- mch_access((char *)fname, W_OK)
- # else
- (fd = mch_open((char *)fname, O_RDWR | O_EXTRA, 0)) < 0
- ? TRUE : (close(fd), FALSE)
- # endif
- ))
- {
- errmsg = (char_u *)_("is read-only (use ! to override)");
- goto fail;
- }
-
- /*
- * Check if the timestamp hasn't changed since reading the file.
- */
- if (overwriting)
- {
- retval = check_mtime(buf, &st_old);
- if (retval == FAIL)
- goto fail;
- }
- }
-
- #ifdef HAVE_ACL
- /*
- * For systems that support ACL: get the ACL from the original file.
- */
- if (!newfile)
- acl = mch_get_acl(fname);
- #endif
-
- /*
- * If 'backupskip' is not empty, don't make a backup for some files.
- */
- dobackup = (p_wb || p_bk || *p_pm != NUL);
- #ifdef FEAT_WILDIGN
- if (dobackup && *p_bsk != NUL && match_file_list(p_bsk, sfname, ffname))
- dobackup = FALSE;
- #endif
-
- /*
- * Save the value of got_int and reset it. We don't want a previous
- * interruption cancel writing, only hitting CTRL-C while writing should
- * abort it.
- */
- prev_got_int = got_int;
- got_int = FALSE;
-
- /*
- * If we are not appending or filtering, the file exists, and the
- * 'writebackup', 'backup' or 'patchmode' option is set, need a backup.
- * When 'patchmode' is set also make a backup when appending.
- *
- * Do not make any backup, if 'writebackup' and 'backup' are both switched
- * off. This helps when editing large files on almost-full disks.
- */
- if (!(append && *p_pm == NUL) && !filtering && perm >= 0 && dobackup)
- {
- if (*p_bkc == 'y' || append) /* "yes" */
- backup_copy = TRUE;
- #ifdef UNIX
- else if (*p_bkc == 'a') /* "auto" */
- {
- struct stat st;
- int i;
-
- /*
- * Don't rename the file when:
- * - it's a hard link
- * - it's a symbolic link
- * - we don't have write permission in the directory
- * - we can't set the owner/group of the new file
- */
- if (st_old.st_nlink > 1
- || mch_lstat((char *)fname, &st) < 0
- || st.st_dev != st_old.st_dev
- || st.st_ino != st_old.st_ino)
- backup_copy = TRUE;
- else
- {
- /*
- * Check if we can create a file and set the owner/group to
- * the ones from the original file.
- * First find a file name that doesn't exist yet (use some
- * arbitrary numbers).
- */
- STRCPY(IObuff, fname);
- for (i = 4913; ; i += 123)
- {
- sprintf((char *)gettail(IObuff), "%d", i);
- if (mch_stat((char *)IObuff, &st) < 0)
- break;
- }
- fd = mch_open((char *)IObuff, O_CREAT|O_WRONLY|O_EXCL, perm);
- close(fd);
- if (fd < 0) /* can't write in directory */
- backup_copy = TRUE;
- else
- {
- chown((char *)IObuff, st_old.st_uid, st_old.st_gid);
- if (mch_stat((char *)IObuff, &st) < 0
- || st.st_uid != st_old.st_uid
- || st.st_gid != st_old.st_gid)
- backup_copy = TRUE;
- mch_remove(IObuff);
- }
- }
- }
- #endif
-
- if (backup_copy
- && (fd = mch_open((char *)fname, O_RDONLY | O_EXTRA, 0)) >= 0)
- {
- int bfd;
- char_u *copybuf, *wp;
- int some_error = FALSE;
- struct stat st_new;
- char_u *dirp;
- char_u *rootname;
- #ifndef SHORT_FNAME
- int did_set_shortname;
- #endif
-
- copybuf = alloc(BUFSIZE + 1);
- if (copybuf == NULL)
- {
- some_error = TRUE; /* out of memory */
- goto nobackup;
- }
-
- /*
- * Try to make the backup in each directory in the 'bdir' option.
- *
- * Unix semantics has it, that we may have a writable file,
- * that cannot be recreated with a simple open(..., O_CREAT, ) e.g:
- * - the directory is not writable,
- * - the file may be a symbolic link,
- * - the file may belong to another user/group, etc.
- *
- * For these reasons, the existing writable file must be truncated
- * and reused. Creation of a backup COPY will be attempted.
- */
- dirp = p_bdir;
- while (*dirp)
- {
- #ifdef UNIX
- st_new.st_ino = 0;
- st_new.st_dev = 0;
- st_new.st_gid = 0;
- #endif
-
- /*
- * Isolate one directory name, using an entry in 'bdir'.
- */
- (void)copy_option_part(&dirp, copybuf, BUFSIZE, ",");
- rootname = get_file_in_dir(fname, copybuf);
- if (rootname == NULL)
- {
- some_error = TRUE; /* out of memory */
- goto nobackup;
- }
-
- #ifndef SHORT_FNAME
- did_set_shortname = FALSE;
- #endif
-
- /*
- * May try twice if 'shortname' not set.
- */
- for (;;)
- {
- /*
- * Make backup file name.
- */
- backup = buf_modname(
- #ifdef SHORT_FNAME
- TRUE,
- #else
- (buf->b_p_sn || buf->b_shortname),
- #endif
- rootname, backup_ext, FALSE);
- if (backup == NULL)
- {
- vim_free(rootname);
- some_error = TRUE; /* out of memory */
- goto nobackup;
- }
-
- /*
- * Check if backup file already exists.
- */
- if (mch_stat((char *)backup, &st_new) >= 0)
- {
- #ifdef UNIX
- /*
- * Check if backup file is same as original file.
- * May happen when modname() gave the same file back.
- * E.g. silly link, or file name-length reached.
- * If we don't check here, we either ruin the file
- * when copying or erase it after writing. jw.
- */
- if (st_new.st_dev == st_old.st_dev
- && st_new.st_ino == st_old.st_ino)
- {
- vim_free(backup);
- backup = NULL; /* no backup file to delete */
- # ifndef SHORT_FNAME
- /*
- * may try again with 'shortname' set
- */
- if (!(buf->b_shortname || buf->b_p_sn))
- {
- buf->b_shortname = TRUE;
- did_set_shortname = TRUE;
- continue;
- }
- /* setting shortname didn't help */
- if (did_set_shortname)
- buf->b_shortname = FALSE;
- # endif
- break;
- }
- #endif
-
- /*
- * If we are not going to keep the backup file, don't
- * delete an existing one, try to use another name.
- * Change one character, just before the extension.
- */
- if (!p_bk)
- {
- wp = backup + STRLEN(backup) - 1
- - STRLEN(backup_ext);
- if (wp < backup) /* empty file name ??? */
- wp = backup;
- *wp = 'z';
- while (*wp > 'a'
- && mch_stat((char *)backup, &st_new) >= 0)
- --*wp;
- /* They all exist??? Must be something wrong. */
- if (*wp == 'a')
- {
- vim_free(backup);
- backup = NULL;
- }
- }
- }
- break;
- }
- vim_free(rootname);
-
- /*
- * Try to create the backup file
- */
- if (backup != NULL)
- {
- /* remove old backup, if present */
- mch_remove(backup);
- /* Open with O_EXCL to avoid the file being created while
- * we were sleeping (symlink hacker attack?) */
- bfd = mch_open((char *)backup,
- O_WRONLY|O_CREAT|O_EXTRA|O_EXCL, 0666);
- if (bfd < 0)
- {
- vim_free(backup);
- backup = NULL;
- }
- else
- {
- /* set file protection same as original file, but
- * strip s-bit */
- (void)mch_setperm(backup, perm & 0777);
-
- #ifdef UNIX
- /*
- * Try to set the group of the backup same as the
- * original file. If this fails, set the protection
- * bits for the group same as the protection bits for
- * others.
- */
- if (st_new.st_gid != st_old.st_gid &&
- # ifdef HAVE_FCHOWN /* sequent-ptx lacks fchown() */
- fchown(bfd, (uid_t)-1, st_old.st_gid) != 0
- # else
- chown((char *)backup, (uid_t)-1, st_old.st_gid) != 0
- # endif
- )
- mch_setperm(backup,
- (perm & 0707) | ((perm & 07) << 3));
- #endif
-
- /*
- * copy the file.
- */
- write_info.bw_fd = bfd;
- write_info.bw_buf = copybuf;
- #ifdef HAS_BW_FLAGS
- write_info.bw_flags = FIO_NOCONVERT;
- #endif
- while ((write_info.bw_len = vim_read(fd, copybuf,
- BUFSIZE)) > 0)
- {
- if (buf_write_bytes(&write_info) == FAIL)
- {
- errmsg = (char_u *)_("Can't write to backup file (use ! to override)");
- break;
- }
- ui_breakcheck();
- if (got_int)
- {
- errmsg = (char_u *)_(e_interr);
- break;
- }
- }
-
- if (close(bfd) < 0 && errmsg == NULL)
- errmsg = (char_u *)_("Close error for backup file (use ! to override)");
- if (write_info.bw_len < 0)
- errmsg = (char_u *)_("Can't read file for backup (use ! to override)");
- #ifdef UNIX
- set_file_time(backup, st_old.st_atime, st_old.st_mtime);
- #endif
- #ifdef HAVE_ACL
- mch_set_acl(backup, acl);
- #endif
- break;
- }
- }
- }
- nobackup:
- close(fd); /* ignore errors for closing read file */
- vim_free(copybuf);
-
- if (backup == NULL && errmsg == NULL)
- errmsg = (char_u *)_("Cannot create backup file (use ! to override)");
- /* ignore errors when forceit is TRUE */
- if ((some_error || errmsg != NULL) && !forceit)
- {
- retval = FAIL;
- goto fail;
- }
- errmsg = NULL;
- }
- else
- {
- char_u *dirp;
- char_u *p;
- char_u *rootname;
-
- /*
- * Make a backup by renaming the original file.
- *
- * Form the backup file name - change path/fo.o.h to
- * path/fo.o.h.bak Try all directories in 'backupdir', first one
- * that works is used.
- */
- dirp = p_bdir;
- while (*dirp)
- {
- /*
- * Isolate one directory name and make the backup file name.
- */
- (void)copy_option_part(&dirp, IObuff, IOSIZE, ",");
- rootname = get_file_in_dir(fname, IObuff);
- if (rootname == NULL)
- backup = NULL;
- else
- {
- backup = buf_modname(
- #ifdef SHORT_FNAME
- TRUE,
- #else
- (buf->b_p_sn || buf->b_shortname),
- #endif
- rootname, backup_ext, FALSE);
- vim_free(rootname);
- }
-
- if (backup != NULL)
- {
- /*
- * If we are not going to keep the backup file, don't
- * delete an existing one, try to use another name.
- * Change one character, just before the extension.
- */
- if (!p_bk && mch_getperm(backup) >= 0)
- {
- p = backup + STRLEN(backup) - 1 - STRLEN(backup_ext);
- if (p < backup) /* empty file name ??? */
- p = backup;
- *p = 'z';
- while (*p > 'a' && mch_getperm(backup) >= 0)
- --*p;
- /* They all exist??? Must be something wrong! */
- if (*p == 'a')
- {
- vim_free(backup);
- backup = NULL;
- }
- }
- }
- if (backup != NULL)
- {
-
- /*
- * Delete any existing backup and move the current version to
- * the backup. For safety, we don't remove the backup until
- * the write has finished successfully. And if the 'backup'
- * option is set, leave it around.
- */
- /*
- * If the renaming of the original file to the backup file
- * works, quit here.
- */
- if (vim_rename(fname, backup) == 0)
- break;
-
- vim_free(backup); /* don't do the rename below */
- backup = NULL;
- }
- }
- if (backup == NULL && !forceit)
- {
- errmsg = (char_u *)_("Can't make backup file (use ! to override)");
- goto fail;
- }
- }
- }
-
- #if defined(UNIX) && !defined(ARCHIE)
- /* When using ":w!" and the file was read-only: make it writable */
- if (forceit && st_old.st_uid == getuid() && perm >= 0 && !(perm & 0200)
- && vim_strchr(p_cpo, CPO_FWRITE) == NULL)
- {
- perm |= 0200;
- (void)mch_setperm(fname, perm);
- made_writable = TRUE;
- }
- #endif
-
- /* When using ":w!" and writing to the current file, readonly makes no
- * sense, reset it */
- if (forceit && overwriting)
- {
- buf->b_p_ro = FALSE;
- #ifdef FEAT_TITLE
- need_maketitle = TRUE; /* set window title later */
- #endif
- #ifdef FEAT_WINDOWS
- status_redraw_all(); /* redraw status lines later */
- #endif
- }
-
- if (end > buf->b_ml.ml_line_count)
- end = buf->b_ml.ml_line_count;
- if (buf->b_ml.ml_flags & ML_EMPTY)
- start = end + 1;
-
- /*
- * If the original file is being overwritten, there is a small chance that
- * we crash in the middle of writing. Therefore the file is preserved now.
- * This makes all block numbers positive so that recovery does not need
- * the original file.
- * Don't do this if there is a backup file and we are exiting.
- */
- if (reset_changed && !newfile && !otherfile(ffname)
- && !(exiting && backup != NULL))
- {
- ml_preserve(buf, FALSE);
- if (got_int)
- {
- errmsg = (char_u *)_(e_interr);
- goto fail;
- }
- }
-
- #ifdef MACOS_CLASSIC /* TODO: Is it need for MACOS_X? (Dany) */
- /*
- * Before risking to lose the original file verify if there's
- * a resource fork to preserve, and if cannot be done warn
- * the users. This happens when overwriting without backups.
- */
- if (backup == NULL && overwriting && !append)
- if (mch_has_resource_fork(fname))
- {
- errmsg = (char_u *)_("The resource fork will be lost (use ! to override)");
- goto fail;
- }
- #endif
-
- #ifdef VMS
- STRCPY(nfname, fname);
- vms_remove_version(nfname); /* remove version */
- fname = nfname;
- #endif
- /* Default: write the the file directly. May write to a temp file for
- * multi-byte conversion. */
- wfname = fname;
-
- #ifdef FEAT_MBYTE
- /* Check for forced 'fileencoding' from "++opt=val" argument. */
- if (eap != NULL && eap->force_enc != 0)
- {
- fenc = eap->cmd + eap->force_enc;
- fenc = enc_canonize(fenc);
- fenc_tofree = fenc;
- }
- else
- fenc = buf->b_p_fenc;
-
- /*
- * The file needs to be converted when 'fileencoding' is set and
- * 'fileencoding' differs from 'encoding'.
- */
- converted = (*fenc != NUL && !same_encoding(p_enc, fenc));
-
- /*
- * Check if UTF-8 to UCS-2/4 or Latin1 conversion needs to be done. Or
- * Latin1 to Unicode conversion. This is handled in buf_write_bytes().
- * Prepare the flags for it and allocate bw_conv_buf when needed.
- */
- if (converted && (enc_utf8 || !has_mbyte))
- {
- wb_flags = get_fio_flags(fenc);
- if (wb_flags & (FIO_UCS2 | FIO_UCS4 | FIO_UTF16 | FIO_UTF8))
- {
- /* Need to allocate a buffer to translate into. */
- if (wb_flags & (FIO_UCS2 | FIO_UTF16 | FIO_UTF8))
- write_info.bw_conv_buflen = bufsize * 2;
- else /* FIO_UCS4 */
- write_info.bw_conv_buflen = bufsize * 4;
- write_info.bw_conv_buf
- = lalloc((long_u)write_info.bw_conv_buflen, TRUE);
- if (write_info.bw_conv_buf == NULL)
- end = 0;
- }
- }
-
- # if defined(FEAT_EVAL) || defined(USE_ICONV)
- if (converted && wb_flags == 0)
- {
- # ifdef USE_ICONV
- /*
- * Use iconv() conversion when conversion is needed and it's not done
- * internally.
- */
- write_info.bw_iconv_fd = (iconv_t)my_iconv_open(fenc,
- enc_utf8 ? (char_u *)"utf-8" : p_enc);
- if (write_info.bw_iconv_fd != (iconv_t)-1)
- {
- /* We're going to use iconv(), allocate a buffer to convert in. */
- write_info.bw_conv_buflen = bufsize * ICONV_MULT;
- write_info.bw_conv_buf
- = lalloc((long_u)write_info.bw_conv_buflen, TRUE);
- if (write_info.bw_conv_buf == NULL)
- end = 0;
- write_info.bw_first = TRUE;
- }
- # ifdef FEAT_EVAL
- else
- # endif
- # endif
-
- # ifdef FEAT_EVAL
- /*
- * When the file needs to be converted with 'charconvert' after
- * writing, write to a temp file instead and let the conversion
- * overwrite the original file.
- */
- if (*p_ccv != NUL)
- {
- wfname = vim_tempname('w');
- if (wfname == NULL) /* Can't write without a tempfile! */
- {
- errmsg = (char_u *)_("E214: Can't find temp file for writing");
- goto fail;
- }
- }
- # endif
- }
- # endif
- if (converted && wb_flags == 0
- # ifdef USE_ICONV
- && write_info.bw_iconv_fd == (iconv_t)-1
- # endif
- # ifdef FEAT_EVAL
- && wfname == fname
- # endif
- )
- {
- if (!forceit)
- {
- errmsg = (char_u *)_("E213: Cannot convert (use ! to write without conversion)");
- goto fail;
- }
- notconverted = TRUE;
- }
- #endif
-
- /*
- * Open the file "wfname" for writing.
- * We may try to open the file twice: If we can't write to the
- * file and forceit is TRUE we delete the existing file and try to create
- * a new one. If this still fails we may have lost the original file!
- * (this may happen when the user reached his quotum for number of files).
- * Appending will fail if the file does not exist and forceit is FALSE.
- */
- while ((fd = mch_open((char *)wfname, O_WRONLY | O_EXTRA | (append
- ? (forceit ? (O_APPEND | O_CREAT) : O_APPEND)
- : (O_CREAT | O_TRUNC))
- , 0666)) < 0)
- {
- struct stat st;
-
- /*
- * A forced write will try to create a new file if the old one is
- * still readonly. This may also happen when the directory is
- * read-only. In that case the mch_remove() will fail.
- */
- if (errmsg == NULL)
- {
- #ifdef UNIX
- struct stat st;
-
- /* Don't delete the file when it's a hard or symbolic link. */
- if ((!newfile && st_old.st_nlink > 1)
- || (mch_lstat((char *)fname, &st) == 0
- && (st.st_dev != st_old.st_dev
- || st.st_ino != st_old.st_ino)))
- errmsg = (char_u *)_("E166: Can't open linked file for writing");
- else
- #endif
- {
- errmsg = (char_u *)_("E212: Can't open file for writing");
- if (forceit && vim_strchr(p_cpo, CPO_FWRITE) == NULL
- && perm >= 0)
- {
- #ifdef UNIX
- /* we write to the file, thus it should be marked
- writable after all */
- if (!(perm & 0200))
- made_writable = TRUE;
- perm |= 0200;
- if (st_old.st_uid != getuid() || st_old.st_gid != getgid())
- perm &= 0777;
- #endif
- if (!append) /* don't remove when appending */
- mch_remove(wfname);
- continue;
- }
- }
- }
- /*
- * If we failed to open the file, we don't need a backup. Throw it
- * away. If we moved or removed the original file try to put the
- * backup in its place.
- */
- if (backup != NULL && wfname == fname)
- {
- if (backup_copy)
- {
- /*
- * There is a small chance that we removed the original, try
- * to move the copy in its place.
- * This may not work if the vim_rename() fails.
- * In that case we leave the copy around.
- */
- /* If file does not exist, put the copy in its place */
- if (mch_stat((char *)fname, &st) < 0)
- vim_rename(backup, fname);
- /* if original file does exist throw away the copy */
- if (mch_stat((char *)fname, &st) >= 0)
- mch_remove(backup);
- }
- else
- {
- /* try to put the original file back */
- vim_rename(backup, fname);
- }
- }
-
- /* if original file no longer exists give an extra warning */
- if (!newfile && mch_stat((char *)fname, &st) < 0)
- end = 0;
-
- #ifdef FEAT_MBYTE
- if (wfname != fname)
- vim_free(wfname);
- #endif
- goto fail;
- }
- errmsg = NULL;
-
- #ifdef MACOS_CLASSIC /* TODO: Is it need for MACOS_X? (Dany) */
- /*
- * On macintosh copy the original files attributes (i.e. the backup)
- * This is done in order to preserve the ressource fork and the
- * Finder attribute (label, comments, custom icons, file creatore)
- */
- if (backup != NULL && overwriting && !append)
- {
- if (backup_copy)
- (void)mch_copy_file_attribute(wfname, backup);
- else
- (void)mch_copy_file_attribute(backup, wfname);
- }
-
- if (!overwriting && !append)
- {
- if (buf->b_ffname != NULL)
- (void)mch_copy_file_attribute(buf->b_ffname, wfname);
- /* Should copy ressource fork */
- }
- #endif
-
- write_info.bw_fd = fd;
-
- #ifdef FEAT_CRYPT
- if (*buf->b_p_key)
- {
- crypt_init_keys(buf->b_p_key);
- /* Write magic number, so that Vim knows that this file is encrypted
- * when reading it again. This also undergoes utf-8 to ucs-2/4
- * conversion when needed. */
- write_info.bw_buf = (char_u *)CRYPT_MAGIC;
- write_info.bw_len = CRYPT_MAGIC_LEN;
- write_info.bw_flags = FIO_NOCONVERT;
- if (buf_write_bytes(&write_info) == FAIL)
- end = 0;
- wb_flags |= FIO_ENCRYPTED;
- }
- #endif
-
- write_info.bw_buf = buffer;
- nchars = 0;
-
- #ifdef FEAT_MBYTE
- /*
- * The BOM is written just after the encryption magic number.
- */
- if (buf->b_p_bomb && !buf->b_p_bin)
- {
- write_info.bw_len = make_bom(buffer, fenc);
- if (write_info.bw_len > 0)
- {
- /* don't convert, do encryption */
- write_info.bw_flags = FIO_NOCONVERT | wb_flags;
- if (buf_write_bytes(&write_info) == FAIL)
- end = 0;
- else
- nchars += write_info.bw_len;
- }
- }
- #endif
-
- write_info.bw_len = bufsize;
- #ifdef HAS_BW_FLAGS
- write_info.bw_flags = wb_flags;
- #endif
- fileformat = get_fileformat_force(buf, eap);
- s = buffer;
- len = 0;
- for (lnum = start; lnum <= end; ++lnum)
- {
- /*
- * The next while loop is done once for each character written.
- * Keep it fast!
- */
- ptr = ml_get_buf(buf, lnum, FALSE) - 1;
- while ((c = *++ptr) != NUL)
- {
- if (c == NL)
- *s = NUL; /* replace newlines with NULs */
- else if (c == CR && fileformat == EOL_MAC)
- *s = NL; /* Mac: replace CRs with NLs */
- else
- *s = c;
- ++s;
- if (++len != bufsize)
- continue;
- if (buf_write_bytes(&write_info) == FAIL)
- {
- end = 0; /* write error: break loop */
- break;
- }
- nchars += bufsize;
- s = buffer;
- len = 0;
- }
- /* write failed or last line has no EOL: stop here */
- if (end == 0
- || (lnum == end
- && buf->b_p_bin
- && (lnum == write_no_eol_lnum
- || (lnum == buf->b_ml.ml_line_count && !buf->b_p_eol))))
- {
- ++lnum; /* written the line, count it */
- no_eol = TRUE;
- break;
- }
- if (fileformat == EOL_UNIX)
- *s++ = NL;
- else
- {
- *s++ = CR; /* EOL_MAC or EOL_DOS: write CR */
- if (fileformat == EOL_DOS) /* write CR-NL */
- {
- if (++len == bufsize)
- {
- if (buf_write_bytes(&write_info) == FAIL)
- {
- end = 0; /* write error: break loop */
- break;
- }
- nchars += bufsize;
- s = buffer;
- len = 0;
- }
- *s++ = NL;
- }
- }
- if (++len == bufsize && end)
- {
- if (buf_write_bytes(&write_info) == FAIL)
- {
- end = 0; /* write error: break loop */
- break;
- }
- nchars += bufsize;
- s = buffer;
- len = 0;
-
- ui_breakcheck();
- if (got_int)
- {
- end = 0; /* Interrupted, break loop */
- break;
- }
- }
- #ifdef VMS
- /*
- * On VMS there is a problem: newlines get added when writing blocks
- * at a time. Fix it by writing a line at a time.
- * This is much slower!
- * Explanation: Vim can not handle, so far, variable record format.
- * With $analize/rms filename you can get the rms file structure, and
- * if the Record format filed is variable, CR will be added after
- * every written buffer. In other cases it works without this fix.
- * From other side read is about 5 times slower for "variable record
- * format" files.
- */
- if (buf->b_fab_rfm == FAB$C_VAR)
- {
- write_info.bw_len = len;
- if (buf_write_bytes(&write_info) == FAIL)
- {
- end = 0; /* write error: break loop */
- break;
- }
- write_info.bw_len = bufsize;
- nchars += len;
- s = buffer;
- len = 0;
- }
- #endif
- }
- if (len > 0 && end > 0)
- {
- write_info.bw_len = len;
- if (buf_write_bytes(&write_info) == FAIL)
- end = 0; /* write error */
- nchars += len;
- }
-
- if (close(fd) != 0)
- {
- errmsg = (char_u *)_("Close failed");
- end = 0;
- }
-
- #ifdef UNIX
- if (made_writable)
- perm &= ~0200; /* reset 'w' bit for security reasons */
- #endif
- if (perm >= 0) /* set perm. of new file same as old file */
- (void)mch_setperm(wfname, perm);
- #ifdef RISCOS
- if (!append && !filtering)
- /* Set the filetype after writing the file. */
- mch_set_filetype(wfname, buf->b_p_oft);
- #endif
- #ifdef HAVE_ACL
- if (!backup_copy)
- mch_set_acl(wfname, acl);
- #endif
-
- #ifdef UNIX
- /* When creating a new file, set its owner/group to that of the original
- * file. Get the new device and inode number. */
- if (backup != NULL && !backup_copy)
- {
- chown((char *)wfname, st_old.st_uid, st_old.st_gid);
- buf_setino(buf);
- }
- #endif
-
-
- #if defined(FEAT_MBYTE) && defined(FEAT_EVAL)
- if (wfname != fname)
- {
- /*
- * The file was written to a temp file, now it needs to be converted
- * with 'charconvert' to (overwrite) the output file.
- */
- if (end != 0)
- {
- if (eval_charconvert(enc_utf8 ? (char_u *)"utf-8" : p_enc, fenc,
- wfname, fname) == FAIL)
- {
- write_info.bw_conv_error = TRUE;
- end = 0;
- }
- }
- mch_remove(wfname);
- vim_free(wfname);
- }
- #endif
-
- if (end == 0)
- {
- if (errmsg == NULL)
- {
- #ifdef FEAT_MBYTE
- if (write_info.bw_conv_error)
- errmsg = (char_u *)_("write error, conversion failed");
- else
- #endif
- if (got_int)
- errmsg = (char_u *)_(e_interr);
- else
- errmsg = (char_u *)_("write error (file system full?)");
- }
-
- /*
- * If we have a backup file, try to put it in place of the new file,
- * because the new file is probably corrupt. This avoids loosing the
- * original file when trying to make a backup when writing the file a
- * second time.
- * When "backup_copy" is set we need to copy the backup over the new
- * file. Otherwise rename the backup file.
- * If this is OK, don't give the extra warning message.
- */
- if (backup != NULL)
- {
- if (backup_copy)
- {
- /* This may take a while, if we were interrupted let the user
- * know we got the message. */
- if (got_int)
- {
- MSG(_(e_interr));
- out_flush();
- }
- if ((fd = mch_open((char *)backup, O_RDONLY | O_EXTRA, 0)) >= 0)
- {
- if ((write_info.bw_fd = mch_open((char *)fname,
- O_WRONLY | O_CREAT | O_TRUNC | O_EXTRA, 0666)) >= 0)
- {
- /* copy the file. */
- write_info.bw_buf = smallbuf;
- #ifdef HAS_BW_FLAGS
- write_info.bw_flags = FIO_NOCONVERT;
- #endif
- while ((write_info.bw_len = vim_read(fd, smallbuf,
- SMBUFSIZE)) > 0)
- if (buf_write_bytes(&write_info) == FAIL)
- break;
-
- if (close(write_info.bw_fd) >= 0
- && write_info.bw_len == 0)
- end = 1; /* success */
- }
- close(fd); /* ignore errors for closing read file */
- }
- }
- else
- {
- if (vim_rename(backup, fname) == 0)
- end = 1;
- }
- }
- goto fail;
- }
-
- lnum -= start; /* compute number of written lines */
- --no_wait_return; /* may wait for return now */
-
- #ifndef UNIX
- # ifdef VMS
- STRCPY(nfname, sfname);
- vms_remove_version(nfname); /* remove version */
- fname = nfname;
- # else
- fname = sfname; /* use shortname now, for the messages */
- # endif
- #endif
- if (!filtering)
- {
- msg_add_fname(buf, fname); /* put fname in IObuff with quotes */
- c = FALSE;
- #ifdef FEAT_MBYTE
- if (write_info.bw_conv_error)
- {
- STRCAT(IObuff, _(" CONVERSION ERROR"));
- c = TRUE;
- }
- else if (notconverted)
- {
- STRCAT(IObuff, _("[NOT converted]"));
- c = TRUE;
- }
- else if (converted)
- {
- STRCAT(IObuff, _("[converted]"));
- c = TRUE;
- }
- #endif
- if (device)
- {
- STRCAT(IObuff, _("[Device]"));
- c = TRUE;
- }
- else if (newfile)
- {
- STRCAT(IObuff, shortmess(SHM_NEW) ? _("[New]") : _("[New File]"));
- c = TRUE;
- }
- if (no_eol)
- {
- msg_add_eol();
- c = TRUE;
- }
- /* may add [unix/dos/mac] */
- if (msg_add_fileformat(fileformat))
- c = TRUE;
- #ifdef FEAT_CRYPT
- if (wb_flags & FIO_ENCRYPTED)
- {
- STRCAT(IObuff, _("[crypted]"));
- c = TRUE;
- }
- #endif
- msg_add_lines(c, (long)lnum, nchars); /* add line/char count */
- if (!shortmess(SHM_WRITE))
- {
- if (append)
- STRCAT(IObuff, shortmess(SHM_WRI) ? _(" [a]") : _(" appended"));
- else
- STRCAT(IObuff, shortmess(SHM_WRI) ? _(" [w]") : _(" written"));
- }
-
- set_keep_msg(msg_trunc_attr(IObuff, FALSE, 0));
- keep_msg_attr = 0;
- }
-
- if (reset_changed && whole
- #ifdef FEAT_MBYTE
- && !write_info.bw_conv_error
- #endif
- ) /* when written everything correctly */
- {
- unchanged(buf, TRUE);
- u_unchanged(buf);
- }
-
- /*
- * If written to the current file, update the timestamp of the swap file
- * and reset the BF_WRITE_MASK flags. Also sets buf->b_mtime.
- */
- if (!exiting && overwriting)
- {
- ml_timestamp(buf);
- buf->b_flags &= ~BF_WRITE_MASK;
- }
-
- /*
- * If we kept a backup until now, and we are in patch mode, then we make
- * the backup file our 'original' file.
- */
- if (*p_pm && dobackup)
- {
- char *org = (char *)buf_modname(
- #ifdef SHORT_FNAME
- TRUE,
- #else
- (buf->b_p_sn || buf->b_shortname),
- #endif
- fname, p_pm, FALSE);
-
- if (backup != NULL)
- {
- struct stat st;
-
- /*
- * If the original file does not exist yet
- * the current backup file becomes the original file
- */
- if (org == NULL)
- EMSG(_("E205: Patchmode: can't save original file"));
- else if (mch_stat(org, &st) < 0)
- {
- vim_rename(backup, (char_u *)org);
- vim_free(backup); /* don't delete the file */
- backup = NULL;
- #ifdef UNIX
- set_file_time((char_u *)org, st_old.st_atime, st_old.st_mtime);
- #endif
- }
- }
- /*
- * If there is no backup file, remember that a (new) file was
- * created.
- */
- else
- {
- int empty_fd;
-
- if (org == NULL
- || (empty_fd = mch_open(org, O_CREAT | O_EXTRA | O_EXCL,
- 0666)) < 0)
- EMSG(_("E206: patchmode: can't touch empty original file"));
- else
- close(empty_fd);
- }
- if (org != NULL)
- {
- mch_setperm((char_u *)org, mch_getperm(fname) & 0777);
- vim_free(org);
- }
- }
-
- /*
- * Remove the backup unless 'backup' option is set
- */
- if (!p_bk && backup != NULL && mch_remove(backup) != 0)
- EMSG(_("E207: Can't delete backup file"));
-
- #ifdef FEAT_SUN_WORKSHOP
- if (usingSunWorkShop)
- workshop_file_saved((char *) ffname);
- #endif
-
- goto nofail;
-
- /*
- * Finish up. We get here either after failure or success.
- */
- fail:
- --no_wait_return; /* may wait for return now */
- nofail:
-
- vim_free(backup);
- if (buffer != smallbuf)
- vim_free(buffer);
- #ifdef FEAT_MBYTE
- vim_free(fenc_tofree);
- vim_free(write_info.bw_conv_buf);
- # ifdef USE_ICONV
- if (write_info.bw_iconv_fd != (iconv_t)-1)
- {
- iconv_close(write_info.bw_iconv_fd);
- write_info.bw_iconv_fd = (iconv_t)-1;
- }
- # endif
- #endif
- #ifdef HAVE_ACL
- mch_free_acl(acl);
- #endif
-
- if (errmsg != NULL)
- {
- attr = hl_attr(HLF_E); /* set highlight for error messages */
- msg_add_fname(buf,
- #ifndef UNIX
- sfname
- #else
- fname
- #endif
- ); /* put file name in IObuff with quotes */
- if (STRLEN(IObuff) + STRLEN(errmsg) >= IOSIZE)
- IObuff[IOSIZE - STRLEN(errmsg) - 1] = NUL;
- STRCAT(IObuff, errmsg);
- emsg(IObuff);
-
- retval = FAIL;
- if (end == 0)
- {
- MSG_PUTS_ATTR(_("\nWARNING: Original file may be lost or damaged\n"),
- attr | MSG_HIST);
- MSG_PUTS_ATTR(_("don't quit the editor until the file is successfully written!"),
- attr | MSG_HIST);
-
- /* Update the timestamp to avoid an "overwrite changed file"
- * prompt when writing again. */
- if (mch_stat((char *)fname, &st_old) >= 0)
- {
- buf_store_time(buf, &st_old, fname);
- buf->b_mtime_read = buf->b_mtime;
- }
- }
- }
- msg_scroll = msg_save;
-
- #ifdef FEAT_AUTOCMD
- if (!got_int)
- {
- aco_save_T aco;
-
- write_no_eol_lnum = 0; /* in case it was set by the previous read */
-
- /*
- * Apply POST autocommands.
- * Careful: The autocommands may call buf_write() recursively!
- */
- aucmd_prepbuf(&aco, buf);
-
- if (append)
- apply_autocmds_exarg(EVENT_FILEAPPENDPOST, fname, fname,
- FALSE, curbuf, eap);
- else if (filtering)
- apply_autocmds_exarg(EVENT_FILTERWRITEPOST, NULL, fname,
- FALSE, curbuf, eap);
- else if (reset_changed && whole)
- apply_autocmds_exarg(EVENT_BUFWRITEPOST, fname, fname,
- FALSE, curbuf, eap);
- else
- apply_autocmds_exarg(EVENT_FILEWRITEPOST, fname, fname,
- FALSE, curbuf, eap);
-
- /* restore curwin/curbuf and a few other things */
- aucmd_restbuf(&aco);
- }
- #endif
-
- got_int |= prev_got_int;
-
- #ifdef MACOS_CLASSIC /* TODO: Is it need for MACOS_X? (Dany) */
- /* Update machine specific information. */
- mch_post_buffer_write(buf);
- #endif
- return retval;
- }
-
- /*
- * Put file name into IObuff with quotes.
- */
- static void
- msg_add_fname(buf, fname)
- buf_T *buf;
- char_u *fname;
- {
- if (fname == NULL)
- fname = (char_u *)"-stdin-";
- home_replace(buf, fname, IObuff + 1, IOSIZE - 4, TRUE);
- IObuff[0] = '"';
- STRCAT(IObuff, "\" ");
- }
-
- /*
- * Append message for text mode to IObuff.
- * Return TRUE if something appended.
- */
- static int
- msg_add_fileformat(eol_type)
- int eol_type;
- {
- #ifndef USE_CRNL
- if (eol_type == EOL_DOS)
- {
- STRCAT(IObuff, shortmess(SHM_TEXT) ? _("[dos]") : _("[dos format]"));
- return TRUE;
- }
- #endif
- #ifndef USE_CR
- if (eol_type == EOL_MAC)
- {
- STRCAT(IObuff, shortmess(SHM_TEXT) ? _("[mac]") : _("[mac format]"));
- return TRUE;
- }
- #endif
- #if defined(USE_CRNL) || defined(USE_CR)
- if (eol_type == EOL_UNIX)
- {
- STRCAT(IObuff, shortmess(SHM_TEXT) ? _("[unix]") : _("[unix format]"));
- return TRUE;
- }
- #endif
- return FALSE;
- }
-
- /*
- * Append line and character count to IObuff.
- */
- static void
- msg_add_lines(insert_space, lnum, nchars)
- int insert_space;
- long lnum;
- long nchars;
- {
- char_u *p;
-
- p = IObuff + STRLEN(IObuff);
-
- if (insert_space)
- *p++ = ' ';
- if (shortmess(SHM_LINES))
- sprintf((char *)p, "%ldL, %ldC", lnum, nchars);
- else
- {
- if (lnum == 1)
- STRCPY(p, _("1 line, "));
- else
- sprintf((char *)p, _("%ld lines, "), lnum);
- p += STRLEN(p);
- if (nchars == 1)
- STRCPY(p, _("1 character"));
- else
- sprintf((char *)p, _("%ld characters"), nchars);
- }
- }
-
- /*
- * Append message for missing line separator to IObuff.
- */
- static void
- msg_add_eol()
- {
- STRCAT(IObuff, shortmess(SHM_LAST) ? _("[noeol]") : _("[Incomplete last line]"));
- }
-
- /*
- * Check modification time of file, before writing to it.
- * The size isn't checked, because using a tool like "gzip" takes care of
- * using the same timestamp but can't set the size.
- */
- static int
- check_mtime(buf, st)
- buf_T *buf;
- struct stat *st;
- {
- if (buf->b_mtime_read != 0
- && time_differs((long)st->st_mtime, buf->b_mtime_read))
- {
- msg_scroll = TRUE; /* don't overwrite messages here */
- msg_silent = 0; /* must give this prompt */
- /* don't use emsg() here, don't want to flush the buffers */
- MSG_ATTR(_("WARNING: The file has been changed since reading it!!!"),
- hl_attr(HLF_E));
- if (ask_yesno((char_u *)_("Do you really want to write to it"),
- TRUE) == 'n')
- return FAIL;
- msg_scroll = FALSE; /* always overwrite the file message now */
- }
- return OK;
- }
-
- static int
- time_differs(t1, t2)
- long t1, t2;
- {
- #if defined(__linux__) || defined(MSDOS) || defined(MSWIN)
- /* On a FAT filesystem, esp. under Linux, there are only 5 bits to store
- * the seconds. Since the roundoff is done when flushing the inode, the
- * time may change unexpectedly by one second!!! */
- return (t1 - t2 > 1 || t2 - t1 > 1);
- #else
- return (t1 != t2);
- #endif
- }
-
- /*
- * Call write() to write a number of bytes to the file.
- * Also handles encryption and 'encoding' conversion.
- *
- * Return FAIL for failure, OK otherwise.
- */
- static int
- buf_write_bytes(ip)
- struct bw_info *ip;
- {
- int wlen;
- char_u *buf = ip->bw_buf; /* data to write */
- int len = ip->bw_len; /* length of data */
- #ifdef HAS_BW_FLAGS
- int flags = ip->bw_flags; /* extra flags */
- #endif
-
- #ifdef FEAT_MBYTE
- /*
- * Skip conversion when writing the crypt magic number or the BOM.
- */
- if (!(flags & FIO_NOCONVERT))
- {
- char_u *p;
- unsigned c;
- int n;
-
- if (flags & FIO_UTF8)
- {
- /*
- * Convert latin1 in the buffer to UTF-8 in the file.
- */
- p = ip->bw_conv_buf; /* translate to buffer */
- for (wlen = 0; wlen < len; ++wlen)
- p += utf_char2bytes(buf[wlen], p);
- buf = ip->bw_conv_buf;
- len = (int)(p - ip->bw_conv_buf);
- }
- else if (flags & (FIO_UCS4 | FIO_UTF16 | FIO_UCS2 | FIO_LATIN1))
- {
- /*
- * Convert UTF-8 bytes in the buffer to UCS-2, UCS-4, UTF-16 or
- * Latin1 chars in the file.
- */
- if (flags & FIO_LATIN1)
- p = buf; /* translate in-place (can only get shorter) */
- else
- p = ip->bw_conv_buf; /* translate to buffer */
- for (wlen = 0; wlen < len; wlen += n)
- {
- if (wlen == 0 && ip->bw_restlen != 0)
- {
- int l;
-
- /* Use remainder of previous call. Append the start of
- * buf[] to get a full sequence. Might still be too
- * short! */
- l = CONV_RESTLEN - ip->bw_restlen;
- if (l > len)
- l = len;
- mch_memmove(ip->bw_rest + ip->bw_restlen, buf, l);
- n = utf_ptr2len_check_len(ip->bw_rest, ip->bw_restlen + l);
- if (n > ip->bw_restlen + len)
- {
- /* We have an incomplete byte sequence at the end to
- * be written. We can't convert it without the
- * remaining bytes. Keep them for the next call. */
- if (ip->bw_restlen + len > CONV_RESTLEN)
- return FAIL;
- ip->bw_restlen += len;
- break;
- }
- if (n > 1)
- c = utf_ptr2char(ip->bw_rest);
- else
- c = ip->bw_rest[0];
- if (n >= ip->bw_restlen)
- {
- n -= ip->bw_restlen;
- ip->bw_restlen = 0;
- }
- else
- {
- ip->bw_restlen -= n;
- mch_memmove(ip->bw_rest, ip->bw_rest + n,
- ip->bw_restlen);
- n = 0;
- }
- }
- else
- {
- n = utf_ptr2len_check_len(buf + wlen, len - wlen);
- if (n > len - wlen)
- {
- /* We have an incomplete byte sequence at the end to
- * be written. We can't convert it without the
- * remaining bytes. Keep them for the next call. */
- if (len - wlen > CONV_RESTLEN)
- return FAIL;
- ip->bw_restlen = len - wlen;
- mch_memmove(ip->bw_rest, buf + wlen, ip->bw_restlen);
- break;
- }
- if (n > 1)
- c = utf_ptr2char(buf + wlen);
- else
- c = buf[wlen];
- }
-
- ip->bw_conv_error |= ucs2bytes(c, &p, flags);
- }
- if (flags & FIO_LATIN1)
- len = (int)(p - buf);
- else
- {
- buf = ip->bw_conv_buf;
- len = (int)(p - ip->bw_conv_buf);
- }
- }
-
- # ifdef USE_ICONV
- if (ip->bw_iconv_fd != (iconv_t)-1)
- {
- const char *from;
- size_t fromlen;
- char *to;
- size_t tolen;
-
- /* Convert with iconv(). */
- if (ip->bw_restlen > 0)
- {
- /* Need to concatenate the remainder of the previous call and
- * the bytes of the current call. Use the end of the
- * conversion buffer for this. */
- fromlen = len + ip->bw_restlen;
- from = (char *)ip->bw_conv_buf + ip->bw_conv_buflen - fromlen;
- mch_memmove((void *)from, ip->bw_rest, (size_t)ip->bw_restlen);
- mch_memmove((void *)(from + ip->bw_restlen), buf, (size_t)len);
- tolen = ip->bw_conv_buflen - fromlen;
- }
- else
- {
- from = (const char *)buf;
- fromlen = len;
- tolen = ip->bw_conv_buflen;
- }
- to = (char *)ip->bw_conv_buf;
-
- if (ip->bw_first)
- {
- size_t save_len = tolen;
-
- /* output the initial shift state sequence */
- (void)iconv(ip->bw_iconv_fd, NULL, NULL, &to, &tolen);
-
- /* There is a bug in iconv() on Linux (which appears to be
- * wide-spread) which sets "to" to NULL and messes up "tolen".
- */
- if (to == NULL)
- {
- to = (char *)ip->bw_conv_buf;
- tolen = save_len;
- }
- ip->bw_first = FALSE;
- }
-
- /*
- * If iconv() has an error or there is not enough room, fail.
- */
- if ((iconv(ip->bw_iconv_fd, &from, &fromlen, &to, &tolen)
- == (size_t)-1 && ICONV_ERRNO != EINVAL)
- || fromlen > CONV_RESTLEN)
- {
- ip->bw_conv_error = TRUE;
- return FAIL;
- }
-
- /* copy remainder to ip->bw_rest[] to be used for the next call. */
- if (fromlen > 0)
- mch_memmove(ip->bw_rest, (void *)from, fromlen);
- ip->bw_restlen = (int)fromlen;
-
- buf = ip->bw_conv_buf;
- len = (int)((char_u *)to - ip->bw_conv_buf);
- }
- # endif
- }
- #endif /* FEAT_MBYTE */
-
- #ifdef FEAT_CRYPT
- if (flags & FIO_ENCRYPTED) /* encrypt the data */
- {
- int ztemp, t, i;
-
- for (i = 0; i < len; i++)
- {
- ztemp = buf[i];
- buf[i] = ZENCODE(ztemp, t);
- }
- }
- #endif
-
- /* Repeat the write(), it may be interrupted by a signal. */
- while (len)
- {
- wlen = vim_write(ip->bw_fd, buf, len);
- if (wlen <= 0) /* error! */
- return FAIL;
- len -= wlen;
- buf += wlen;
- }
- return OK;
- }
-
- #ifdef FEAT_MBYTE
- /*
- * Convert a Unicode character to bytes.
- */
- static int
- ucs2bytes(c, pp, flags)
- unsigned c; /* in: character */
- char_u **pp; /* in/out: pointer to result */
- int flags; /* FIO_ flags */
- {
- char_u *p = *pp;
- int error = FALSE;
- int cc;
-
-
- if (flags & FIO_UCS4)
- {
- if (flags & FIO_ENDIAN_L)
- {
- *p++ = c;
- *p++ = (c >> 8);
- *p++ = (c >> 16);
- *p++ = (c >> 24);
- }
- else
- {
- *p++ = (c >> 24);
- *p++ = (c >> 16);
- *p++ = (c >> 8);
- *p++ = c;
- }
- }
- else if (flags & (FIO_UCS2 | FIO_UTF16))
- {
- if (c >= 0x10000)
- {
- if (flags & FIO_UTF16)
- {
- /* Make two words, ten bits of the character in each. First
- * word is 0xd800 - 0xdbff, second one 0xdc00 - 0xdfff */
- c -= 0x10000;
- if (c >= 0x100000)
- error = TRUE;
- cc = ((c >> 10) & 0x3ff) + 0xd800;
- if (flags & FIO_ENDIAN_L)
- {
- *p++ = cc;
- *p++ = ((unsigned)cc >> 8);
- }
- else
- {
- *p++ = ((unsigned)cc >> 8);
- *p++ = cc;
- }
- c = (c & 0x3ff) + 0xdc00;
- }
- else
- error = TRUE;
- }
- if (flags & FIO_ENDIAN_L)
- {
- *p++ = c;
- *p++ = (c >> 8);
- }
- else
- {
- *p++ = (c >> 8);
- *p++ = c;
- }
- }
- else /* Latin1 */
- {
- if (c >= 0x100)
- {
- error = TRUE;
- *p++ = 0xBF;
- }
- else
- *p++ = c;
- }
-
- *pp = p;
- return error;
- }
-
- /*
- * Return TRUE if "a" and "b" are the same 'encoding'.
- * Ignores difference between "ansi" and "latin1", "ucs-4" and "ucs-4be", etc.
- */
- static int
- same_encoding(a, b)
- char_u *a;
- char_u *b;
- {
- int f;
-
- if (STRCMP(a, b) == 0)
- return TRUE;
- f = get_fio_flags(a);
- return (f != 0 && get_fio_flags(b) == f);
- }
-
- /*
- * Check "ptr" for a unicode encoding and return the FIO_ flags needed for the
- * internal conversion.
- * if "ptr" is an empty string, use 'encoding'.
- */
- static int
- get_fio_flags(ptr)
- char_u *ptr;
- {
- int prop;
-
- if (*ptr == NUL)
- ptr = p_enc;
-
- prop = enc_canon_props(ptr);
- if (prop & ENC_UNICODE)
- {
- if (prop & ENC_2BYTE)
- {
- if (prop & ENC_ENDIAN_L)
- return FIO_UCS2 | FIO_ENDIAN_L;
- return FIO_UCS2;
- }
- if (prop & ENC_4BYTE)
- {
- if (prop & ENC_ENDIAN_L)
- return FIO_UCS4 | FIO_ENDIAN_L;
- return FIO_UCS4;
- }
- if (prop & ENC_2WORD)
- {
- if (prop & ENC_ENDIAN_L)
- return FIO_UTF16 | FIO_ENDIAN_L;
- return FIO_UTF16;
- }
- return FIO_UTF8;
- }
- if (prop & ENC_LATIN1)
- return FIO_LATIN1;
- /* must be ENC_DBCS, requires iconv() */
- return 0;
- }
-
- /*
- * Check for a Unicode BOM (Byte Order Mark) at the start of p[size].
- * "size" must be at least 2.
- * Return the name of the encoding and set "*lenp" to the length.
- * Returns NULL when no BOM found.
- */
- static char_u *
- check_for_bom(p, size, lenp, flags)
- char_u *p;
- long size;
- int *lenp;
- int flags;
- {
- char *name = NULL;
- int len = 2;
-
- if (p[0] == 0xef && p[1] == 0xbb && size >= 3 && p[2] == 0xbf
- && (flags == FIO_ALL || flags == 0))
- {
- name = "utf-8"; /* EF BB BF */
- len = 3;
- }
- else if (p[0] == 0xff && p[1] == 0xfe)
- {
- if (size >= 4 && p[2] == 0 && p[3] == 0
- && (flags == FIO_ALL || flags == (FIO_UCS4 | FIO_ENDIAN_L)))
- {
- name = "ucs-4le"; /* FF FE 00 00 */
- len = 4;
- }
- else if (flags == FIO_ALL || flags == (FIO_UCS2 | FIO_ENDIAN_L))
- name = "ucs-2le"; /* FF FE */
- else if (flags == (FIO_UTF16 | FIO_ENDIAN_L))
- name = "utf-16le"; /* FF FE */
- }
- else if (p[0] == 0xfe && p[1] == 0xff
- && (flags == FIO_ALL || flags == FIO_UCS2 || flags == FIO_UTF16))
- {
- if (flags == FIO_UTF16)
- name = "utf-16"; /* FE FF */
- else
- name = "ucs-2"; /* FE FF */
- }
- else if (size >= 4 && p[0] == 0 && p[1] == 0 && p[2] == 0xfe
- && p[3] == 0xff && (flags == FIO_ALL || flags == FIO_UCS4))
- {
- name = "ucs-4"; /* 00 00 FE FF */
- len = 4;
- }
-
- *lenp = len;
- return (char_u *)name;
- }
-
- /*
- * Generate a BOM in "buf[4]" for encoding "name".
- * Return the length of the BOM (zero when no BOM).
- */
- static int
- make_bom(buf, name)
- char_u *buf;
- char_u *name;
- {
- int flags;
- char_u *p;
-
- flags = get_fio_flags(name);
-
- /* Can't put a BOM in a non-Unicode file. */
- if (flags == FIO_LATIN1 || flags == 0)
- return 0;
-
- if (flags == FIO_UTF8) /* UTF-8 */
- {
- buf[0] = 0xef;
- buf[1] = 0xbb;
- buf[2] = 0xbf;
- return 3;
- }
- p = buf;
- (void)ucs2bytes(0xfeff, &p, flags);
- return (int)(p - buf);
- }
- #endif
-
- /*
- * Try to find a shortname by comparing the fullname with the current
- * directory.
- * Returns NULL if not shorter name possible, pointer into "full_path"
- * otherwise.
- */
- char_u *
- shorten_fname(full_path, dir_name)
- char_u *full_path;
- char_u *dir_name;
- {
- int len;
- char_u *p;
-
- if (full_path == NULL)
- return NULL;
- len = (int)STRLEN(dir_name);
- if (fnamencmp(dir_name, full_path, len) == 0)
- {
- p = full_path + len;
- #if defined(MSDOS) || defined(MSWIN) || defined(OS2)
- /*
- * MSDOS: when a file is in the root directory, dir_name will end in a
- * slash, since C: by itself does not define a specific dir. In this
- * case p may already be correct. <negri>
- */
- if (!((len > 2) && (*(p - 2) == ':')))
- #endif
- {
- if (vim_ispathsep(*p))
- ++p;
- #ifndef VMS /* the path separator is always part of the path */
- else
- p = NULL;
- #endif
- }
- }
- #if defined(MSDOS) || defined(MSWIN) || defined(OS2)
- /*
- * When using a file in the current drive, remove the drive name:
- * "A:\dir\file" -> "\dir\file". This helps when moving a session file on
- * a floppy from "A:\dir" to "B:\dir".
- */
- else if (len > 3
- && TO_UPPER(full_path[0]) == TO_UPPER(dir_name[0])
- && full_path[1] == ':'
- && vim_ispathsep(full_path[2]))
- p = full_path + 2;
- #endif
- else
- p = NULL;
- return p;
- }
-
- /*
- * When "force" is TRUE: Use full path from now on for files currently being
- * edited, both for file name and swap file name. Try to shorten the file
- * names a bit, if safe to do so.
- * When "force" is FALSE: Only try to shorten absolute file names.
- * For buffers that have buftype "nofile" or "scratch": never change the file
- * name.
- */
- void
- shorten_fnames(force)
- int force;
- {
- char_u dirname[MAXPATHL];
- buf_T *buf;
- char_u *p;
-
- mch_dirname(dirname, MAXPATHL);
- for (buf = firstbuf; buf != NULL; buf = buf->b_next)
- {
- if (buf->b_fname != NULL
- #ifdef FEAT_QUICKFIX
- && !bt_nofile(buf)
- #endif
- && !path_with_url(buf->b_fname)
- && (force
- || buf->b_sfname == NULL
- || mch_isFullName(buf->b_sfname)))
- {
- vim_free(buf->b_sfname);
- buf->b_sfname = NULL;
- p = shorten_fname(buf->b_ffname, dirname);
- if (p != NULL)
- {
- buf->b_sfname = vim_strsave(p);
- buf->b_fname = buf->b_sfname;
- }
- if (p == NULL || buf->b_fname == NULL)
- buf->b_fname = buf->b_ffname;
- mf_fullname(buf->b_ml.ml_mfp);
- }
- }
- #ifdef FEAT_WINDOWS
- status_redraw_all();
- #endif
- }
-
- /*
- * add extention to file name - change path/fo.o.h to path/fo.o.h.ext or
- * fo_o_h.ext for MSDOS or when shortname option set.
- *
- * Assumed that fname is a valid name found in the filesystem we assure that
- * the return value is a different name and ends in 'ext'.
- * "ext" MUST be at most 4 characters long if it starts with a dot, 3
- * characters otherwise.
- * Space for the returned name is allocated, must be freed later.
- * Returns NULL when out of memory.
- */
- char_u *
- modname(fname, ext, prepend_dot)
- char_u *fname, *ext;
- int prepend_dot; /* may prepend a '.' to file name */
- {
- return buf_modname(
- #ifdef SHORT_FNAME
- TRUE,
- #else
- (curbuf->b_p_sn || curbuf->b_shortname),
- #endif
- fname, ext, prepend_dot);
- }
-
- char_u *
- buf_modname(shortname, fname, ext, prepend_dot)
- int shortname; /* use 8.3 file name */
- char_u *fname, *ext;
- int prepend_dot; /* may prepend a '.' to file name */
- {
- char_u *retval;
- char_u *s;
- char_u *e;
- char_u *ptr;
- int fnamelen, extlen;
-
- extlen = (int)STRLEN(ext);
-
- /*
- * If there is no file name we must get the name of the current directory
- * (we need the full path in case :cd is used).
- */
- if (fname == NULL || *fname == NUL)
- {
- retval = alloc((unsigned)(MAXPATHL + extlen + 3));
- if (retval == NULL)
- return NULL;
- if (mch_dirname(retval, MAXPATHL) == FAIL ||
- (fnamelen = (int)STRLEN(retval)) == 0)
- {
- vim_free(retval);
- return NULL;
- }
- if (!vim_ispathsep(retval[fnamelen - 1]))
- {
- retval[fnamelen++] = PATHSEP;
- retval[fnamelen] = NUL;
- }
- #ifndef SHORT_FNAME
- prepend_dot = FALSE; /* nothing to prepend a dot to */
- #endif
- }
- else
- {
- fnamelen = (int)STRLEN(fname);
- retval = alloc((unsigned)(fnamelen + extlen + 3));
- if (retval == NULL)
- return NULL;
- STRCPY(retval, fname);
- #ifdef VMS
- vms_remove_version(retval); /* we do not need versions here */
- fnamelen = STRLEN(retval); /* it can be shorter*/
- #endif
- }
-
- /*
- * search backwards until we hit a '/', '\' or ':' replacing all '.'
- * by '_' for MSDOS or when shortname option set and ext starts with a dot.
- * Then truncate what is after the '/', '\' or ':' to 8 characters for
- * MSDOS and 26 characters for AMIGA, a lot more for UNIX.
- */
- for (ptr = retval + fnamelen; ptr >= retval; ptr--)
- {
- #ifndef RISCOS
- if (*ext == '.'
- #ifdef USE_LONG_FNAME
- && (!USE_LONG_FNAME || shortname)
- #else
- # ifndef SHORT_FNAME
- && shortname
- # endif
- #endif
- )
- if (*ptr == '.') /* replace '.' by '_' */
- *ptr = '_';
- #endif /* RISCOS */
- if (vim_ispathsep(*ptr))
- break;
- }
- ptr++;
-
- /* the file name has at most BASENAMELEN characters. */
- #ifndef SHORT_FNAME
- if (STRLEN(ptr) > (unsigned)BASENAMELEN)
- ptr[BASENAMELEN] = '\0';
- #endif
-
- s = ptr + STRLEN(ptr);
-
- /*
- * For 8.3 file names we may have to reduce the length.
- */
- #ifdef USE_LONG_FNAME
- if (!USE_LONG_FNAME || shortname)
- #else
- # ifndef SHORT_FNAME
- if (shortname)
- # endif
- #endif
- {
- /*
- * If there is no file name, or the file name ends in '/', and the
- * extension starts with '.', put a '_' before the dot, because just
- * ".ext" is invalid.
- */
- if (fname == NULL || *fname == NUL
- || vim_ispathsep(fname[STRLEN(fname) - 1]))
- {
- #ifdef RISCOS
- if (*ext == '/')
- #else
- if (*ext == '.')
- #endif
- *s++ = '_';
- }
- /*
- * If the extension starts with '.', truncate the base name at 8
- * characters
- */
- #ifdef RISCOS
- /* We normally use '/', but swap files are '_' */
- else if (*ext == '/' || *ext == '_')
- #else
- else if (*ext == '.')
- #endif
- {
- if (s - ptr > (size_t)8)
- {
- s = ptr + 8;
- *s = '\0';
- }
- }
- /*
- * If the extension doesn't start with '.', and the file name
- * doesn't have an extension yet, append a '.'
- */
- #ifdef RISCOS
- else if ((e = vim_strchr(ptr, '/')) == NULL)
- *s++ = '/';
- #else
- else if ((e = vim_strchr(ptr, '.')) == NULL)
- *s++ = '.';
- #endif
- /*
- * If the extension doesn't start with '.', and there already is an
- * extension, it may need to be tructated
- */
- else if ((int)STRLEN(e) + extlen > 4)
- s = e + 4 - extlen;
- }
- #if defined(OS2) || defined(USE_LONG_FNAME) || defined(WIN3264)
- /*
- * If there is no file name, and the extension starts with '.', put a
- * '_' before the dot, because just ".ext" may be invalid if it's on a
- * FAT partition, and on HPFS it doesn't matter.
- */
- else if ((fname == NULL || *fname == NUL) && *ext == '.')
- *s++ = '_';
- #endif
-
- /*
- * Append the extention.
- * ext can start with '.' and cannot exceed 3 more characters.
- */
- STRCPY(s, ext);
-
- #ifndef SHORT_FNAME
- /*
- * Prepend the dot.
- */
- if (prepend_dot && !shortname && *(e = gettail(retval)) !=
- #ifdef RISCOS
- '/'
- #else
- '.'
- #endif
- #ifdef USE_LONG_FNAME
- && USE_LONG_FNAME
- #endif
- )
- {
- mch_memmove(e + 1, e, STRLEN(e) + 1);
- #ifdef RISCOS
- *e = '/';
- #else
- *e = '.';
- #endif
- }
- #endif
-
- /*
- * Check that, after appending the extension, the file name is really
- * different.
- */
- if (fname != NULL && STRCMP(fname, retval) == 0)
- {
- /* we search for a character that can be replaced by '_' */
- while (--s >= ptr)
- {
- if (*s != '_')
- {
- *s = '_';
- break;
- }
- }
- if (s < ptr) /* fname was "________.<ext>", how tricky! */
- *ptr = 'v';
- }
- return retval;
- }
-
- /*
- * Like fgets(), but if the file line is too long, it is truncated and the
- * rest of the line is thrown away. Returns TRUE for end-of-file.
- */
- int
- vim_fgets(buf, size, fp)
- char_u *buf;
- int size;
- FILE *fp;
- {
- char *eof;
- #define FGETS_SIZE 200
- char tbuf[FGETS_SIZE];
-
- buf[size - 2] = NUL;
- #ifdef USE_CR
- eof = fgets_cr((char *)buf, size, fp);
- #else
- eof = fgets((char *)buf, size, fp);
- #endif
- if (buf[size - 2] != NUL && buf[size - 2] != '\n')
- {
- buf[size - 1] = NUL; /* Truncate the line */
-
- /* Now throw away the rest of the line: */
- do
- {
- tbuf[FGETS_SIZE - 2] = NUL;
- #ifdef USE_CR
- fgets_cr((char *)tbuf, FGETS_SIZE, fp);
- #else
- fgets((char *)tbuf, FGETS_SIZE, fp);
- #endif
- } while (tbuf[FGETS_SIZE - 2] != NUL && tbuf[FGETS_SIZE - 2] != '\n');
- }
- return (eof == NULL);
- }
-
- #if defined(USE_CR) || defined(PROTO)
- /*
- * Like vim_fgets(), but accept any line terminator: CR, CR-LF or LF.
- * Returns TRUE for end-of-file.
- * Only used for the Mac, because it's much slower than vim_fgets().
- */
- int
- tag_fgets(buf, size, fp)
- char_u *buf;
- int size;
- FILE *fp;
- {
- int i = 0;
- int c;
- int eof = FALSE;
-
- for (;;)
- {
- c = fgetc(fp);
- if (c == EOF)
- {
- eof = TRUE;
- break;
- }
- if (c == '\r')
- {
- /* Always store a NL for end-of-line. */
- if (i < size - 1)
- buf[i++] = '\n';
- c = fgetc(fp);
- if (c != '\n') /* Macintosh format: single CR. */
- ungetc(c, fp);
- break;
- }
- if (i < size - 1)
- buf[i++] = c;
- if (c == '\n')
- break;
- }
- buf[i] = NUL;
- return eof;
- }
- #endif
-
- /*
- * rename() only works if both files are on the same file system, this
- * function will (attempts to?) copy the file across if rename fails -- webb
- * Return -1 for failure, 0 for success.
- */
- int
- vim_rename(from, to)
- char_u *from;
- char_u *to;
- {
- int fd_in;
- int fd_out;
- int n;
- char *errmsg = NULL;
- char *buffer;
- #ifdef AMIGA
- BPTR flock;
- #endif
-
- /*
- * First delete the "to" file, this is required on some systems to make
- * the mch_rename() work, on other systems it makes sure that we don't
- * have two files when the mch_rename() fails.
- */
-
- #ifdef AMIGA
- /*
- * With MSDOS-compatible filesystems (crossdos, messydos) it is possible
- * that the name of the "to" file is the same as the "from" file. To
- * avoid the chance of accidently deleting the "from" file (horror!) we
- * lock it during the remove.
- * When used for making a backup before writing the file: This should not
- * happen with ":w", because startscript() should detect this problem and
- * set buf->b_shortname, causing modname() to return a correct ".bak" file
- * name. This problem does exist with ":w filename", but then the
- * original file will be somewhere else so the backup isn't really
- * important. If autoscripting is off the rename may fail.
- */
- flock = Lock((UBYTE *)from, (long)ACCESS_READ);
- #endif
- mch_remove(to);
- #ifdef AMIGA
- if (flock)
- UnLock(flock);
- #endif
-
- /*
- * First try a normal rename, return if it works.
- */
- if (mch_rename((char *)from, (char *)to) == 0)
- return 0;
-
- /*
- * Rename() failed, try copying the file.
- */
- fd_in = mch_open((char *)from, O_RDONLY|O_EXTRA, 0);
- if (fd_in == -1)
- return -1;
- fd_out = mch_open((char *)to, O_CREAT|O_EXCL|O_WRONLY|O_EXTRA, 0666);
- if (fd_out == -1)
- {
- close(fd_in);
- return -1;
- }
-
- buffer = (char *)alloc(BUFSIZE);
- if (buffer == NULL)
- {
- close(fd_in);
- close(fd_out);
- return -1;
- }
-
- while ((n = vim_read(fd_in, buffer, BUFSIZE)) > 0)
- if (vim_write(fd_out, buffer, n) != n)
- {
- errmsg = _("E208: Error writing to \"%s\"");
- break;
- }
-
- vim_free(buffer);
- close(fd_in);
- if (close(fd_out) < 0)
- errmsg = _("E209: Error closing \"%s\"");
- if (n < 0)
- {
- errmsg = _("E210: Error reading \"%s\"");
- to = from;
- }
- if (errmsg != NULL)
- {
- EMSG2(errmsg, to);
- return -1;
- }
- mch_remove(from);
- return 0;
- }
-
- static int already_warned = FALSE;
-
- /*
- * Check if any not hidden buffer has been changed.
- * Postpone the check if there are characters in the stuff buffer, a global
- * command is being executed, a mapping is being executed or an autocommand is
- * busy.
- * Returns TRUE if some message was written (screen should be redrawn and
- * cursor positioned).
- */
- int
- check_timestamps(focus)
- int focus; /* called for GUI focus event */
- {
- buf_T *buf;
- int didit = 0;
- int n;
-
- /* Avoid doing a check twice. The OK/Reload dialog can cause a focus
- * event and we would keep on checking if the file is steadily growing.
- * Do check again after typing something. */
- if (focus && did_check_timestamps)
- {
- need_check_timestamps = TRUE;
- return FALSE;
- }
-
- if (!stuff_empty() || global_busy || !typebuf_typed()
- #ifdef FEAT_AUTOCMD
- || autocmd_busy
- #endif
- )
- need_check_timestamps = TRUE; /* check later */
- else
- {
- ++no_wait_return;
- did_check_timestamps = TRUE;
- already_warned = FALSE;
- for (buf = firstbuf; buf != NULL; )
- {
- /* Only check buffers in a window. */
- if (buf->b_nwindows > 0)
- {
- n = buf_check_timestamp(buf, focus);
- if (didit < n)
- didit = n;
- if (n > 0 && !buf_valid(buf))
- {
- /* Autocommands have removed the buffer, start at the
- * first one again. */
- buf = firstbuf;
- continue;
- }
- }
- buf = buf->b_next;
- }
- --no_wait_return;
- need_check_timestamps = FALSE;
- if (need_wait_return && didit == 2)
- {
- /* make sure msg isn't overwritten */
- msg_puts((char_u *)"\n");
- out_flush();
- }
- }
- return didit;
- }
-
- /*
- * Check if buffer "buf" has been changed.
- * Also check if the file for a new buffer unexpectedly appeared.
- * return 1 if a changed buffer was found.
- * return 2 if a message has been displayed.
- * return 0 otherwise.
- */
- /*ARGSUSED*/
- int
- buf_check_timestamp(buf, focus)
- buf_T *buf;
- int focus; /* called for GUI focus event */
- {
- struct stat st;
- int stat_res;
- int retval = 0;
- char_u *path;
- char_u *tbuf;
- char *mesg = NULL;
- int reload = FALSE;
- #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG)
- int can_reload = FALSE;
- #endif
- size_t orig_size = buf->b_orig_size;
- int orig_mode = buf->b_orig_mode;
-
- /* If there is no file name, the buffer is not loaded, or 'buftype' is
- * set: ignore this buffer. */
- if (buf->b_ffname == NULL
- || buf->b_ml.ml_mfp == NULL
- #if defined(FEAT_QUICKFIX)
- || *buf->b_p_bt != NUL
- #endif
- )
- return 0;
-
- if ( !(buf->b_flags & BF_NOTEDITED)
- && buf->b_mtime != 0
- && ((stat_res = mch_stat((char *)buf->b_ffname, &st)) < 0
- || time_differs((long)st.st_mtime, buf->b_mtime)
- #ifdef HAVE_ST_MODE
- || (int)st.st_mode != buf->b_orig_mode
- #else
- || mch_getperm(buf->b_ffname) != buf->b_orig_mode
- #endif
- ))
- {
- retval = 1;
-
- /* set b_mtime to stop further warnings */
- if (stat_res < 0)
- {
- buf->b_mtime = 0;
- buf->b_orig_size = 0;
- buf->b_orig_mode = 0;
- }
- else
- buf_store_time(buf, &st, buf->b_ffname);
-
- /* Don't do anything for a directory. Might contain the file
- * explorer. */
- if (mch_isdir(buf->b_fname))
- ;
-
- /*
- * If 'autoread' is set, the buffer has no changes and the file still
- * exists, reload the buffer. Use the buffer-local option value if it
- * was set, the global option value otherwise.
- */
- else if ((buf->b_p_ar >= 0 ? buf->b_p_ar : p_ar)
- && !bufIsChanged(buf) && stat_res >= 0)
- reload = TRUE;
- else
- {
- #ifdef FEAT_AUTOCMD
- /*
- * Only give the warning if there are no FileChangedShell
- * autocommands.
- */
- if (apply_autocmds(EVENT_FILECHANGEDSHELL,
- buf->b_fname, buf->b_fname, FALSE, buf))
- {
- if (!buf_valid(buf))
- {
- EMSG(_("E246: FileChangedShell autocommand deleted buffer"));
- }
- return 2;
- }
- else
- #endif
- {
- if (stat_res < 0)
- mesg = _("E211: Warning: File \"%s\" no longer available");
- else
- {
- #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG)
- can_reload = TRUE;
- #endif
- /*
- * Check if the file contents really changed to avoid
- * giving a warning when only the timestamp was set (e.g.,
- * checked out of CVS). Always warn when the buffer was
- * changed.
- */
- if (bufIsChanged(buf))
- mesg = _("W12: Warning: File \"%s\" has changed and the buffer was changed in Vim as well");
- else if (orig_size != buf->b_orig_size
- || buf_contents_changed(buf))
- mesg = _("W11: Warning: File \"%s\" has changed since editing started");
- else if (orig_mode != buf->b_orig_mode)
- mesg = _("W16: Warning: Mode of file \"%s\" has changed since editing started");
- }
- }
- }
-
- }
- else if ((buf->b_flags & BF_NEW) && !(buf->b_flags & BF_NEW_W)
- && vim_fexists(buf->b_ffname))
- {
- retval = 1;
- mesg = _("W13: Warning: File \"%s\" has been created after editing started");
- buf->b_flags |= BF_NEW_W;
- #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG)
- can_reload = TRUE;
- #endif
- }
-
- if (mesg != NULL)
- {
- path = home_replace_save(buf, buf->b_fname);
- if (path != NULL)
- {
- tbuf = alloc((unsigned)(STRLEN(path) + STRLEN(mesg)));
- sprintf((char *)tbuf, mesg, path);
- #if defined(FEAT_CON_DIALOG) || defined(FEAT_GUI_DIALOG)
- if (can_reload)
- {
- if (do_dialog(VIM_WARNING, (char_u *)_("Warning"), tbuf,
- (char_u *)_("&OK\n&Load File"), 1, NULL) == 2)
- reload = TRUE;
- }
- else
- #endif
- if (State > NORMAL_BUSY || (State & CMDLINE) || already_warned)
- {
- EMSG(tbuf);
- retval = 2;
- }
- else
- {
- # ifdef VIMBUDDY
- VimBuddyText(tbuf + 9, 2);
- # else
- # ifdef FEAT_AUTOCMD
- if (!autocmd_busy)
- # endif
- {
- msg_start();
- msg_puts_attr(tbuf, hl_attr(HLF_E) + MSG_HIST);
- msg_clr_eos();
- (void)msg_end();
- if (emsg_silent == 0)
- {
- out_flush();
- # ifdef FEAT_GUI
- if (!focus)
- # endif
- /* give the user some time to think about it */
- ui_delay(1000L, TRUE);
-
- /* don't redraw and erase the message */
- redraw_cmdline = FALSE;
- }
- }
- already_warned = TRUE;
- # endif
- }
-
- vim_free(path);
- vim_free(tbuf);
- }
- }
-
- if (reload)
- {
- linenr_T old_line_count = buf->b_ml.ml_line_count;
- exarg_T ea;
- pos_T old_cursor;
- #ifdef FEAT_AUTOCMD
- aco_save_T aco;
-
- /* set curwin/curbuf for "buf" and save some things */
- aucmd_prepbuf(&aco, buf);
- #else
- buf_T *save_curbuf = curbuf;
-
- curbuf = buf;
- curwin->w_buffer = buf;
- #endif
-
- /* We only want to read the text from the file, not reset the syntax
- * highlighting, clear marks, diff status, etc. Force the fileformat
- * and encoding to be the same. */
- if (prep_exarg(&ea, buf) == OK)
- {
- old_cursor = curwin->w_cursor;
- if (bufempty())
- old_line_count = 0;
- curbuf->b_flags |= BF_CHECK_RO; /* check for RO again */
- #ifdef FEAT_AUTOCMD
- keep_filetype = TRUE; /* don't detect 'filetype' */
- #endif
- if (readfile(buf->b_ffname, buf->b_fname, (linenr_T)0, (linenr_T)0,
- (linenr_T)MAXLNUM, &ea, READ_NEW) == FAIL)
- EMSG2(_("E321: Could not reload \"%s\""), buf->b_fname);
- else
- {
- /* Delete the old lines. */
- while (old_line_count-- > 0)
- ml_delete(buf->b_ml.ml_line_count, FALSE);
- /* Mark the buffer as unmodified and free undo info. */
- unchanged(buf, TRUE);
- u_blockfree(buf);
- u_clearall(buf);
- }
- vim_free(ea.cmd);
-
- /* Restore the cursor position and check it (lines may have been
- * removed). */
- curwin->w_cursor = old_cursor;
- check_cursor();
- #ifdef FEAT_AUTOCMD
- keep_filetype = FALSE;
- #endif
- }
-
- #ifdef FEAT_AUTOCMD
- /* restore curwin/curbuf and a few other things */
- aucmd_restbuf(&aco);
-
- /* Careful: autocommands may have made "buf" invalid! */
- #else
- curwin->w_buffer = save_curbuf;
- curbuf = save_curbuf;
- #endif
- }
-
- return retval;
- }
-
- /*ARGSUSED*/
- void
- buf_store_time(buf, st, fname)
- buf_T *buf;
- struct stat *st;
- char_u *fname;
- {
- buf->b_mtime = (long)st->st_mtime;
- buf->b_orig_size = (size_t)st->st_size;
- #ifdef HAVE_ST_MODE
- buf->b_orig_mode = (int)st->st_mode;
- #else
- buf->b_orig_mode = mch_getperm(fname);
- #endif
- }
-
- /*
- * Adjust the line with missing eol, used for the next write.
- * Used for do_filter(), when the input lines for the filter are deleted.
- */
- void
- write_lnum_adjust(offset)
- linenr_T offset;
- {
- if (write_no_eol_lnum) /* only if there is a missing eol */
- write_no_eol_lnum += offset;
- }
-
- #if defined(TEMPDIRNAMES) || defined(PROTO)
- static long temp_count = 0; /* Temp filename counter. */
-
- /*
- * Delete the temp directory and all files it contains.
- */
- void
- vim_deltempdir()
- {
- char_u **files;
- int file_count;
- int i;
-
- if (vim_tempdir != NULL)
- {
- sprintf((char *)NameBuff, "%s*", vim_tempdir);
- if (gen_expand_wildcards(1, &NameBuff, &file_count, &files,
- EW_DIR|EW_FILE|EW_SILENT) == OK)
- {
- for (i = 0; i < file_count; ++i)
- mch_remove(files[i]);
- FreeWild(file_count, files);
- }
- gettail(NameBuff)[-1] = NUL;
- (void)mch_rmdir(NameBuff);
-
- vim_free(vim_tempdir);
- vim_tempdir = NULL;
- }
- }
- #endif
-
- /*
- * vim_tempname(): Return a unique name that can be used for a temp file.
- *
- * The temp file is NOT created.
- *
- * The returned pointer is to allocated memory.
- * The returned pointer is NULL if no valid name was found.
- */
- /*ARGSUSED*/
- char_u *
- vim_tempname(extra_char)
- int extra_char; /* character to use in the name instead of '?' */
- {
- #ifdef USE_TMPNAM
- char_u itmp[L_tmpnam]; /* use tmpnam() */
- #else
- char_u itmp[TEMPNAMELEN];
- #endif
-
- #ifdef TEMPDIRNAMES
- static char *(tempdirs[]) = {TEMPDIRNAMES};
- int i;
- long nr;
- long off;
- # ifndef EEXIST
- struct stat st;
- # endif
-
- /*
- * This will create a directory for private use by this instance of Vim.
- * This is done once, and the same directory is used for all temp files.
- * This method avoids security problems because of symlink attacks et al.
- * It's also a bit faster, because we only need to check for an existing
- * file when creating the directory and not for each temp file.
- */
- if (vim_tempdir == NULL)
- {
- /*
- * Try the entries in TEMPDIRNAMES to create the temp directory.
- */
- for (i = 0; i < sizeof(tempdirs) / sizeof(char *); ++i)
- {
- /* expand $TMP, leave room for "/v1100000/999999999" */
- expand_env((char_u *)tempdirs[i], itmp, TEMPNAMELEN - 20);
- if (mch_isdir(itmp)) /* directory exists */
- {
- # ifdef __EMX__
- /* If $TMP contains a forward slash (perhaps using bash or
- * tcsh), don't add a backslash, use a forward slash!
- * Adding 2 backslashes didn't work. */
- if (vim_strchr(itmp, '/') != NULL)
- STRCAT(itmp, "/");
- else
- # endif
- add_pathsep(itmp);
-
- /* Get an arbitrary number of up to 6 digits. When it's
- * unlikely that it already exists it will be faster,
- * otherwise it doesn't matter. The use of mkdir() avoids any
- * security problems because of the predictable number. */
- nr = (mch_get_pid() + (long)time(NULL)) % 1000000L;
-
- /* Try up to 10000 different values until we find a name that
- * doesn't exist. */
- for (off = 0; off < 10000L; ++off)
- {
- int r;
- #if defined(UNIX) || defined(VMS)
- mode_t umask_save;
- #endif
-
- sprintf((char *)itmp + STRLEN(itmp), "v%ld", nr + off);
- # ifndef EEXIST
- /* If mkdir() does not set errno to EEXIST, check for
- * existing file here. There is a race condition then,
- * although it's fail-safe. */
- if (mch_stat((char *)itmp, &st) >= 0)
- continue;
- # endif
- #if defined(UNIX) || defined(VMS)
- /* Make sure the umask doesn't remove the executable bit.
- * "repl" has been reported to use "177". */
- umask_save = umask(077);
- #endif
- r = vim_mkdir(itmp, 0700);
- #if defined(UNIX) || defined(VMS)
- (void)umask(umask_save);
- #endif
- if (r == 0)
- {
- /* Directory was created, use this name. */
- # ifdef __EMX__
- if (vim_strchr(itmp, '/') != NULL)
- STRCAT(itmp, "/");
- else
- # endif
- add_pathsep(itmp);
- /* Use the full path; When using the current directory
- * a ":cd" would confuse us. */
- vim_tempdir = FullName_save(itmp, FALSE);
- break;
- }
- # ifdef EEXIST
- /* If the mkdir() didn't fail because the file/dir exists,
- * we probably can't create any dir here, try another
- * place. */
- if (errno != EEXIST)
- # endif
- break;
- }
- if (vim_tempdir != NULL)
- break;
- }
- }
- }
-
- if (vim_tempdir != NULL)
- {
- /* There is no need to check if the file exists, because we own the
- * directory and nobody else creates a file in it. */
- sprintf((char *)itmp, "%s%ld", vim_tempdir, temp_count++);
- return vim_strsave(itmp);
- }
-
- return NULL;
-
- #else /* TEMPDIRNAMES */
-
- # ifdef WIN3264
- char szTempFile[_MAX_PATH + 1];
- char buf4[4];
- char_u *retval;
- char_u *p;
-
- STRCPY(itmp, "");
- if (GetTempPath(_MAX_PATH, szTempFile) == 0)
- szTempFile[0] = NUL; /* GetTempPath() failed, use current dir */
- strcpy(buf4, "VIM");
- buf4[2] = extra_char; /* make it "VIa", "VIb", etc. */
- if (GetTempFileName(szTempFile, buf4, 0, itmp) == 0)
- return NULL;
- /* GetTempFileName() will create the file, we don't want that */
- (void)DeleteFile(itmp);
-
- /* Backslashes in a temp file name cause problems when filtering with
- * "sh". NOTE: This also checks 'shellcmdflag' to help those people who
- * didn't set 'shellslash'. */
- retval = vim_strsave(itmp);
- if (*p_shcf == '-' || p_ssl)
- for (p = retval; *p; ++p)
- if (*p == '\\')
- *p = '/';
- return retval;
-
- # else /* WIN3264 */
-
- # ifdef USE_TMPNAM
- /* tmpnam() will make its own name */
- if (*tmpnam((char *)itmp) == NUL)
- return NULL;
- # else
- char_u *p;
-
- # ifdef VMS_TEMPNAM
- /* mktemp() is not working on VMS. It seems to be
- * a do-nothing function. Therefore we use tempnam().
- */
- sprintf((char *)itmp, "VIM%c", extra_char);
- p = (char_u *)tempnam("tmp:", (char *)itmp);
- if (p != NULL)
- {
- /* VMS will use '.LOG' if we don't explicitly specify an extension,
- * and VIM will then be unable to find the file later */
- STRCPY(itmp, p);
- STRCAT(itmp, ".txt");
- free(p);
- }
- else
- return NULL;
- # else
- STRCPY(itmp, TEMPNAME);
- if ((p = vim_strchr(itmp, '?')) != NULL)
- *p = extra_char;
- if (mktemp((char *)itmp) == NULL)
- return NULL;
- # endif
- # endif
- # endif /* WIN3264 */
-
- return vim_strsave(itmp);
- #endif /* TEMPDIRNAMES */
- }
-
- /*
- * Code for automatic commands.
- *
- * Only included when "FEAT_AUTOCMD" has been defined.
- */
-
- #if defined(FEAT_AUTOCMD) || defined(PROTO)
-
- /*
- * The autocommands are stored in a list for each event.
- * Autocommands for the same pattern, that are consecutive, are joined
- * together, to avoid having to match the pattern too often.
- * The result is an array of Autopat lists, which point to AutoCmd lists:
- *
- * first_autopat[0] --> Autopat.next --> Autopat.next --> NULL
- * Autopat.cmds Autopat.cmds
- * | |
- * V V
- * AutoCmd.next AutoCmd.next
- * | |
- * V V
- * AutoCmd.next NULL
- * |
- * V
- * NULL
- *
- * first_autopat[1] --> Autopat.next --> NULL
- * Autopat.cmds
- * |
- * V
- * AutoCmd.next
- * |
- * V
- * NULL
- * etc.
- *
- * The order of AutoCmds is important, this is the order in which they were
- * defined and will have to be executed.
- */
- typedef struct AutoCmd
- {
- char_u *cmd; /* The command to be executed (NULL
- when command has been removed) */
- char nested; /* If autocommands nest here */
- char last; /* last command in list */
- #ifdef FEAT_EVAL
- scid_T scriptID; /* script ID where defined */
- #endif
- struct AutoCmd *next; /* Next AutoCmd in list */
- } AutoCmd;
-
- typedef struct AutoPat
- {
- int group; /* group ID */
- char_u *pat; /* pattern as typed (NULL when pattern
- has been removed) */
- int patlen; /* strlen() of pat */
- char_u *reg_pat; /* pattern converted to regexp */
- char allow_dirs; /* Pattern may match whole path */
- char last; /* last pattern for apply_autocmds() */
- AutoCmd *cmds; /* list of commands to do */
- struct AutoPat *next; /* next AutoPat in AutoPat list */
- } AutoPat;
-
- static struct event_name
- {
- char *name; /* event name */
- EVENT_T event; /* event number */
- } event_names[] =
- {
- {"BufAdd", EVENT_BUFADD},
- {"BufCreate", EVENT_BUFADD},
- {"BufDelete", EVENT_BUFDELETE},
- {"BufEnter", EVENT_BUFENTER},
- {"BufFilePost", EVENT_BUFFILEPOST},
- {"BufFilePre", EVENT_BUFFILEPRE},
- {"BufHidden", EVENT_BUFHIDDEN},
- {"BufLeave", EVENT_BUFLEAVE},
- {"BufNew", EVENT_BUFNEW},
- {"BufNewFile", EVENT_BUFNEWFILE},
- {"BufRead", EVENT_BUFREADPOST},
- {"BufReadCmd", EVENT_BUFREADCMD},
- {"BufReadPost", EVENT_BUFREADPOST},
- {"BufReadPre", EVENT_BUFREADPRE},
- {"BufUnload", EVENT_BUFUNLOAD},
- {"BufWinEnter", EVENT_BUFWINENTER},
- {"BufWinLeave", EVENT_BUFWINLEAVE},
- {"BufWipeout", EVENT_BUFWIPEOUT},
- {"BufWrite", EVENT_BUFWRITEPRE},
- {"BufWritePost", EVENT_BUFWRITEPOST},
- {"BufWritePre", EVENT_BUFWRITEPRE},
- {"BufWriteCmd", EVENT_BUFWRITECMD},
- {"CmdwinEnter", EVENT_CMDWINENTER},
- {"CmdwinLeave", EVENT_CMDWINLEAVE},
- {"EncodingChanged", EVENT_ENCODINGCHANGED},
- {"FileEncoding", EVENT_ENCODINGCHANGED},
- {"CursorHold", EVENT_CURSORHOLD},
- {"FileAppendPost", EVENT_FILEAPPENDPOST},
- {"FileAppendPre", EVENT_FILEAPPENDPRE},
- {"FileAppendCmd", EVENT_FILEAPPENDCMD},
- {"FileChangedShell",EVENT_FILECHANGEDSHELL},
- {"FileChangedRO", EVENT_FILECHANGEDRO},
- {"FileReadPost", EVENT_FILEREADPOST},
- {"FileReadPre", EVENT_FILEREADPRE},
- {"FileReadCmd", EVENT_FILEREADCMD},
- {"FileType", EVENT_FILETYPE},
- {"FileWritePost", EVENT_FILEWRITEPOST},
- {"FileWritePre", EVENT_FILEWRITEPRE},
- {"FileWriteCmd", EVENT_FILEWRITECMD},
- {"FilterReadPost", EVENT_FILTERREADPOST},
- {"FilterReadPre", EVENT_FILTERREADPRE},
- {"FilterWritePost", EVENT_FILTERWRITEPOST},
- {"FilterWritePre", EVENT_FILTERWRITEPRE},
- {"FocusGained", EVENT_FOCUSGAINED},
- {"FocusLost", EVENT_FOCUSLOST},
- {"FuncUndefined", EVENT_FUNCUNDEFINED},
- {"GUIEnter", EVENT_GUIENTER},
- {"RemoteReply", EVENT_REMOTEREPLY},
- {"StdinReadPost", EVENT_STDINREADPOST},
- {"StdinReadPre", EVENT_STDINREADPRE},
- {"Syntax", EVENT_SYNTAX},
- {"TermChanged", EVENT_TERMCHANGED},
- {"TermResponse", EVENT_TERMRESPONSE},
- {"User", EVENT_USER},
- {"VimEnter", EVENT_VIMENTER},
- {"VimLeave", EVENT_VIMLEAVE},
- {"VimLeavePre", EVENT_VIMLEAVEPRE},
- {"WinEnter", EVENT_WINENTER},
- {"WinLeave", EVENT_WINLEAVE},
- {NULL, (EVENT_T)0}
- };
-
- static AutoPat *first_autopat[NUM_EVENTS] =
- {
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, NULL
- };
-
- /*
- * struct used to keep status while executing autocommands for an event.
- */
- typedef struct AutoPatCmd
- {
- AutoPat *curpat; /* next AutoPat to examine */
- AutoCmd *nextcmd; /* next AutoCmd to execute */
- int group; /* group being used */
- char_u *fname; /* fname to match with */
- char_u *sfname; /* sfname to match with */
- char_u *tail; /* tail of fname */
- EVENT_T event; /* current event */
- } AutoPatCmd;
-
- /*
- * augroups stores a list of autocmd group names.
- */
- garray_T augroups = {0, 0, sizeof(char_u *), 10, NULL};
- #define AUGROUP_NAME(i) (((char_u **)augroups.ga_data)[i])
-
- /*
- * The ID of the current group. Group 0 is the default one.
- */
- #define AUGROUP_DEFAULT -1 /* default autocmd group */
- #define AUGROUP_ERROR -2 /* errornouse autocmd group */
- #define AUGROUP_ALL -3 /* all autocmd groups */
- static int current_augroup = AUGROUP_DEFAULT;
-
- static int au_need_clean = FALSE; /* need to delete marked patterns */
-
- static void show_autocmd __ARGS((AutoPat *ap, EVENT_T event));
- static void au_remove_pat __ARGS((AutoPat *ap));
- static void au_remove_cmds __ARGS((AutoPat *ap));
- static void au_cleanup __ARGS((void));
- static int au_new_group __ARGS((char_u *name));
- static void au_del_group __ARGS((char_u *name));
- static int au_find_group __ARGS((char_u *name));
- static EVENT_T event_name2nr __ARGS((char_u *start, char_u **end));
- static char_u *event_nr2name __ARGS((EVENT_T event));
- static char_u *find_end_event __ARGS((char_u *arg));
- static int event_ignored __ARGS((EVENT_T event));
- static int au_get_grouparg __ARGS((char_u **argp));
- static int do_autocmd_event __ARGS((EVENT_T event, char_u *pat, int nested, char_u *cmd, int forceit, int group));
- static char_u *getnextac __ARGS((int c, void *cookie, int indent));
- static int apply_autocmds_group __ARGS((EVENT_T event, char_u *fname, char_u *fname_io, int force, int group, buf_T *buf, exarg_T *eap));
- static void auto_next_pat __ARGS((AutoPatCmd *apc, int stop_at_last));
-
- static EVENT_T last_event;
- static int last_group;
-
- /*
- * Show the autocommands for one AutoPat.
- */
- static void
- show_autocmd(ap, event)
- AutoPat *ap;
- EVENT_T event;
- {
- AutoCmd *ac;
-
- /* Check for "got_int" (here and at various places below), which is set
- * when "q" has been hit for the "--more--" prompt */
- if (got_int)
- return;
- if (ap->pat == NULL) /* pattern has been removed */
- return;
-
- msg_putchar('\n');
- if (got_int)
- return;
- if (event != last_event || ap->group != last_group)
- {
- if (ap->group != AUGROUP_DEFAULT)
- {
- if (AUGROUP_NAME(ap->group) == NULL)
- msg_puts_attr((char_u *)_("--Deleted--"), hl_attr(HLF_E));
- else
- msg_puts_attr(AUGROUP_NAME(ap->group), hl_attr(HLF_T));
- msg_puts((char_u *)" ");
- }
- msg_puts_attr(event_nr2name(event), hl_attr(HLF_T));
- last_event = event;
- last_group = ap->group;
- msg_putchar('\n');
- if (got_int)
- return;
- }
- msg_col = 4;
- msg_outtrans(ap->pat);
-
- for (ac = ap->cmds; ac != NULL; ac = ac->next)
- {
- if (ac->cmd != NULL) /* skip removed commands */
- {
- if (msg_col >= 14)
- msg_putchar('\n');
- msg_col = 14;
- if (got_int)
- return;
- msg_outtrans(ac->cmd);
- if (got_int)
- return;
- if (ac->next != NULL)
- {
- msg_putchar('\n');
- if (got_int)
- return;
- }
- }
- }
- }
-
- /*
- * Mark an autocommand pattern for deletion.
- */
- static void
- au_remove_pat(ap)
- AutoPat *ap;
- {
- vim_free(ap->pat);
- ap->pat = NULL;
- au_need_clean = TRUE;
- }
-
- /*
- * Mark all commands for a pattern for deletion.
- */
- static void
- au_remove_cmds(ap)
- AutoPat *ap;
- {
- AutoCmd *ac;
-
- for (ac = ap->cmds; ac != NULL; ac = ac->next)
- {
- vim_free(ac->cmd);
- ac->cmd = NULL;
- }
- au_need_clean = TRUE;
- }
-
- /*
- * Cleanup autocommands and patterns that have been deleted.
- * This is only done when not executing autocommands.
- */
- static void
- au_cleanup()
- {
- AutoPat *ap, **prev_ap;
- AutoCmd *ac, **prev_ac;
- EVENT_T event;
-
- if (autocmd_busy || !au_need_clean)
- return;
-
- /* loop over all events */
- for (event = (EVENT_T)0; (int)event < (int)NUM_EVENTS;
- event = (EVENT_T)((int)event + 1))
- {
- /* loop over all autocommand patterns */
- prev_ap = &(first_autopat[(int)event]);
- for (ap = *prev_ap; ap != NULL; ap = *prev_ap)
- {
- /* loop over all commands for this pattern */
- prev_ac = &(ap->cmds);
- for (ac = *prev_ac; ac != NULL; ac = *prev_ac)
- {
- /* remove the command if the pattern is to be deleted or when
- * the command has been marked for deletion */
- if (ap->pat == NULL || ac->cmd == NULL)
- {
- *prev_ac = ac->next;
- vim_free(ac->cmd);
- vim_free(ac);
- }
- else
- prev_ac = &(ac->next);
- }
-
- /* remove the pattern if it has been marked for deletion */
- if (ap->pat == NULL)
- {
- *prev_ap = ap->next;
- vim_free(ap->reg_pat);
- vim_free(ap);
- }
- else
- prev_ap = &(ap->next);
- }
- }
-
- au_need_clean = FALSE;
- }
-
- /*
- * Add an autocmd group name.
- * Return it's ID. Returns AUGROUP_ERROR (< 0) for error.
- */
- static int
- au_new_group(name)
- char_u *name;
- {
- int i;
-
- i = au_find_group(name);
- if (i == AUGROUP_ERROR) /* the group doesn't exist yet, add it */
- {
- /* First try using a free entry. */
- for (i = 0; i < augroups.ga_len; ++i)
- if (AUGROUP_NAME(i) == NULL)
- break;
- if (i == augroups.ga_len && ga_grow(&augroups, 1) == FAIL)
- return AUGROUP_ERROR;
-
- AUGROUP_NAME(i) = vim_strsave(name);
- if (AUGROUP_NAME(i) == NULL)
- return AUGROUP_ERROR;
- if (i == augroups.ga_len)
- {
- ++augroups.ga_len;
- --augroups.ga_room;
- }
- }
-
- return i;
- }
-
- static void
- au_del_group(name)
- char_u *name;
- {
- int i;
-
- i = au_find_group(name);
- if (i == AUGROUP_ERROR) /* the group doesn't exist */
- EMSG2(_("E367: No such group: \"%s\""), name);
- else
- {
- vim_free(AUGROUP_NAME(i));
- AUGROUP_NAME(i) = NULL;
- }
- }
-
- /*
- * Find the ID of an autocmd group name.
- * Return it's ID. Returns AUGROUP_ERROR (< 0) for error.
- */
- static int
- au_find_group(name)
- char_u *name;
- {
- int i;
-
- for (i = 0; i < augroups.ga_len; ++i)
- if (AUGROUP_NAME(i) != NULL && STRCMP(AUGROUP_NAME(i), name) == 0)
- return i;
- return AUGROUP_ERROR;
- }
-
- /*
- * ":augroup {name}".
- */
- void
- do_augroup(arg, del_group)
- char_u *arg;
- int del_group;
- {
- int i;
-
- if (del_group)
- {
- if (*arg == NUL)
- EMSG(_(e_argreq));
- else
- au_del_group(arg);
- }
- else if (STRICMP(arg, "end") == 0) /* ":aug end": back to group 0 */
- current_augroup = AUGROUP_DEFAULT;
- else if (*arg) /* ":aug xxx": switch to group xxx */
- {
- i = au_new_group(arg);
- if (i != AUGROUP_ERROR)
- current_augroup = i;
- }
- else /* ":aug": list the group names */
- {
- msg_start();
- for (i = 0; i < augroups.ga_len; ++i)
- {
- if (AUGROUP_NAME(i) != NULL)
- {
- msg_puts(AUGROUP_NAME(i));
- msg_puts((char_u *)" ");
- }
- }
- msg_clr_eos();
- msg_end();
- }
- }
-
- /*
- * Return the event number for event name "start".
- * Return NUM_EVENTS if the event name was not found.
- * Return a pointer to the next event name in "end".
- */
- static EVENT_T
- event_name2nr(start, end)
- char_u *start;
- char_u **end;
- {
- char_u *p;
- int i;
- int len;
-
- /* the event name ends with end of line, a blank or a comma */
- for (p = start; *p && !vim_iswhite(*p) && *p != ','; ++p)
- ;
- for (i = 0; event_names[i].name != NULL; ++i)
- {
- len = (int)STRLEN(event_names[i].name);
- if (len == p - start && STRNICMP(event_names[i].name, start, len) == 0)
- break;
- }
- if (*p == ',')
- ++p;
- *end = p;
- if (event_names[i].name == NULL)
- return NUM_EVENTS;
- return event_names[i].event;
- }
-
- /*
- * Return the name for event "event".
- */
- static char_u *
- event_nr2name(event)
- EVENT_T event;
- {
- int i;
-
- for (i = 0; event_names[i].name != NULL; ++i)
- if (event_names[i].event == event)
- return (char_u *)event_names[i].name;
- return (char_u *)"Unknown";
- }
-
- /*
- * Scan over the events. "*" stands for all events.
- */
- static char_u *
- find_end_event(arg)
- char_u *arg;
- {
- char_u *pat;
- char_u *p;
-
- if (*arg == '*')
- {
- if (arg[1] && !vim_iswhite(arg[1]))
- {
- EMSG2(_("E215: Illegal character after *: %s"), arg);
- return NULL;
- }
- pat = arg + 1;
- }
- else
- {
- for (pat = arg; *pat && !vim_iswhite(*pat); pat = p)
- {
- if ((int)event_name2nr(pat, &p) >= (int)NUM_EVENTS)
- {
- EMSG2(_("E216: No such event: %s"), pat);
- return NULL;
- }
- }
- }
- return pat;
- }
-
- /*
- * Return TRUE if "event" is included in 'eventignore'.
- */
- static int
- event_ignored(event)
- EVENT_T event;
- {
- char_u *p = p_ei;
-
- if (STRICMP(p_ei, "all") == 0)
- return TRUE;
-
- while (*p)
- if (event_name2nr(p, &p) == event)
- return TRUE;
-
- return FALSE;
- }
-
- /*
- * Return OK when the contents of p_ei is valid, FAIL otherwise.
- */
- int
- check_ei()
- {
- char_u *p = p_ei;
-
- if (STRICMP(p_ei, "all") == 0)
- return OK;
-
- while (*p)
- if (event_name2nr(p, &p) == NUM_EVENTS)
- return FAIL;
-
- return OK;
- }
-
- /*
- * do_autocmd() -- implements the :autocmd command. Can be used in the
- * following ways:
- *
- * :autocmd <event> <pat> <cmd> Add <cmd> to the list of commands that
- * will be automatically executed for <event>
- * when editing a file matching <pat>, in
- * the current group.
- * :autocmd <event> <pat> Show the auto-commands associated with
- * <event> and <pat>.
- * :autocmd <event> Show the auto-commands associated with
- * <event>.
- * :autocmd Show all auto-commands.
- * :autocmd! <event> <pat> <cmd> Remove all auto-commands associated with
- * <event> and <pat>, and add the command
- * <cmd>, for the current group.
- * :autocmd! <event> <pat> Remove all auto-commands associated with
- * <event> and <pat> for the current group.
- * :autocmd! <event> Remove all auto-commands associated with
- * <event> for the current group.
- * :autocmd! Remove ALL auto-commands for the current
- * group.
- *
- * Multiple events and patterns may be given separated by commas. Here are
- * some examples:
- * :autocmd bufread,bufenter *.c,*.h set tw=0 smartindent noic
- * :autocmd bufleave * set tw=79 nosmartindent ic infercase
- *
- * :autocmd * *.c show all autocommands for *.c files.
- */
- void
- do_autocmd(arg, forceit)
- char_u *arg;
- int forceit;
- {
- char_u *pat;
- char_u *envpat = NULL;
- char_u *cmd;
- EVENT_T event;
- int need_free = FALSE;
- int nested = FALSE;
- int group;
-
- /*
- * Check for a legal group name. If not, use AUGROUP_ALL.
- */
- group = au_get_grouparg(&arg);
- if (arg == NULL) /* out of memory */
- return;
-
- /*
- * Scan over the events.
- * If we find an illegal name, return here, don't do anything.
- */
- pat = find_end_event(arg);
- if (pat == NULL)
- return;
-
- /*
- * Scan over the pattern. Put a NUL at the end.
- */
- pat = skipwhite(pat);
- cmd = pat;
- while (*cmd && (!vim_iswhite(*cmd) || cmd[-1] == '\\'))
- cmd++;
- if (*cmd)
- *cmd++ = NUL;
-
- /* expand environment variables in the pattern */
- if (vim_strchr(pat, '$') != NULL || vim_strchr(pat, '~') != NULL)
- {
- envpat = expand_env_save(pat);
- if (envpat != NULL)
- pat = envpat;
- }
-
- /*
- * Check for "nested" flag.
- */
- cmd = skipwhite(cmd);
- if (*cmd != NUL && STRNCMP(cmd, "nested", 6) == 0 && vim_iswhite(cmd[6]))
- {
- nested = TRUE;
- cmd = skipwhite(cmd + 6);
- }
-
- /*
- * Find the start of the commands.
- * Expand <sfile> in it.
- */
- if (*cmd != NUL)
- {
- cmd = expand_sfile(cmd);
- if (cmd == NULL) /* some error */
- return;
- need_free = TRUE;
- }
-
- /*
- * Print header when showing autocommands.
- */
- if (!forceit && *cmd == NUL)
- {
- /* Highlight title */
- MSG_PUTS_TITLE(_("\n--- Auto-Commands ---"));
- }
-
- /*
- * Loop over the events.
- */
- last_event = (EVENT_T)-1; /* for listing the event name */
- last_group = AUGROUP_ERROR; /* for listing the group name */
- if (*arg == '*' || *arg == NUL)
- {
- for (event = (EVENT_T)0; (int)event < (int)NUM_EVENTS;
- event = (EVENT_T)((int)event + 1))
- if (do_autocmd_event(event, pat,
- nested, cmd, forceit, group) == FAIL)
- break;
- }
- else
- {
- while (*arg && !vim_iswhite(*arg))
- if (do_autocmd_event(event_name2nr(arg, &arg), pat,
- nested, cmd, forceit, group) == FAIL)
- break;
- }
-
- if (need_free)
- vim_free(cmd);
- vim_free(envpat);
- }
-
- /*
- * Find the group ID in a ":autocmd" or ":doautocmd" argument.
- * The "argp" argument is advanced to the following argument.
- *
- * Returns the group ID, AUGROUP_ERROR for error (out of memory).
- */
- static int
- au_get_grouparg(argp)
- char_u **argp;
- {
- char_u *group_name;
- char_u *p;
- char_u *arg = *argp;
- int group = AUGROUP_ALL;
-
- p = skiptowhite(arg);
- if (p > arg)
- {
- group_name = vim_strnsave(arg, (int)(p - arg));
- if (group_name == NULL) /* out of memory */
- return AUGROUP_ERROR;
- group = au_find_group(group_name);
- if (group == AUGROUP_ERROR)
- group = AUGROUP_ALL; /* no match, use all groups */
- else
- *argp = skipwhite(p); /* match, skip over group name */
- vim_free(group_name);
- }
- return group;
- }
-
- /*
- * do_autocmd() for one event.
- * If *pat == NUL do for all patterns.
- * If *cmd == NUL show entries.
- * If forceit == TRUE delete entries.
- * If group is not AUGROUP_ALL, only use this group.
- */
- static int
- do_autocmd_event(event, pat, nested, cmd, forceit, group)
- EVENT_T event;
- char_u *pat;
- int nested;
- char_u *cmd;
- int forceit;
- int group;
- {
- AutoPat *ap;
- AutoPat **prev_ap;
- AutoCmd *ac;
- AutoCmd **prev_ac;
- int brace_level;
- char_u *endpat;
- int findgroup;
- int allgroups;
- int patlen;
-
- if (group == AUGROUP_ALL)
- findgroup = current_augroup;
- else
- findgroup = group;
- allgroups = (group == AUGROUP_ALL && !forceit && *cmd == NUL);
-
- /*
- * Show or delete all patterns for an event.
- */
- if (*pat == NUL)
- {
- for (ap = first_autopat[(int)event]; ap != NULL; ap = ap->next)
- {
- if (forceit) /* delete the AutoPat, if it's in the current group */
- {
- if (ap->group == findgroup)
- au_remove_pat(ap);
- }
- else if (group == AUGROUP_ALL || ap->group == group)
- show_autocmd(ap, event);
- }
- }
-
- /*
- * Loop through all the specified patterns.
- */
- for ( ; *pat; pat = (*endpat == ',' ? endpat + 1 : endpat))
- {
- /*
- * Find end of the pattern.
- * Watch out for a comma in braces, like "*.\{obj,o\}".
- */
- brace_level = 0;
- for (endpat = pat; *endpat && (*endpat != ',' || brace_level
- || endpat[-1] == '\\'); ++endpat)
- {
- if (*endpat == '{')
- brace_level++;
- else if (*endpat == '}')
- brace_level--;
- }
- if (pat == endpat) /* ignore single comma */
- continue;
- patlen = (int)(endpat - pat);
-
- /*
- * Find AutoPat entries with this pattern.
- */
- prev_ap = &first_autopat[(int)event];
- while ((ap = *prev_ap) != NULL)
- {
- if (ap->pat != NULL)
- {
- /* Accept a pattern when:
- * - a group was specified and it's that group, or a group was
- * not specified and it's the current group, or a group was
- * not specified and we are listing
- * - the length of the pattern matches
- * - the pattern matches
- */
- if ((allgroups || ap->group == findgroup)
- && ap->patlen == patlen
- && STRNCMP(pat, ap->pat, patlen) == 0)
- {
- /*
- * Remove existing autocommands.
- * If adding any new autocmd's for this AutoPat, don't
- * delete the pattern from the autopat list, append to
- * this list.
- */
- if (forceit)
- {
- if (*cmd != NUL && ap->next == NULL)
- {
- au_remove_cmds(ap);
- break;
- }
- au_remove_pat(ap);
- }
-
- /*
- * Show autocmd's for this autopat
- */
- else if (*cmd == NUL)
- show_autocmd(ap, event);
-
- /*
- * Add autocmd to this autopat, if it's the last one.
- */
- else if (ap->next == NULL)
- break;
- }
- }
- prev_ap = &ap->next;
- }
-
- /*
- * Add a new command.
- */
- if (*cmd != NUL)
- {
- /*
- * If the pattern we want to add a command to does appear at the
- * end of the list (or not is not in the list at all), add the
- * pattern at the end of the list.
- */
- if (ap == NULL)
- {
- ap = (AutoPat *)alloc((unsigned)sizeof(AutoPat));
- if (ap == NULL)
- return FAIL;
- ap->pat = vim_strnsave(pat, patlen);
- ap->patlen = patlen;
- if (ap->pat == NULL)
- {
- vim_free(ap);
- return FAIL;
- }
- ap->reg_pat = file_pat_to_reg_pat(pat, endpat,
- &ap->allow_dirs, TRUE);
- if (ap->reg_pat == NULL)
- {
- vim_free(ap->pat);
- vim_free(ap);
- return FAIL;
- }
- ap->cmds = NULL;
- *prev_ap = ap;
- ap->next = NULL;
- if (group == AUGROUP_ALL)
- ap->group = current_augroup;
- else
- ap->group = group;
- }
-
- /*
- * Add the autocmd at the end of the AutoCmd list.
- */
- prev_ac = &(ap->cmds);
- while ((ac = *prev_ac) != NULL)
- prev_ac = &ac->next;
- ac = (AutoCmd *)alloc((unsigned)sizeof(AutoCmd));
- if (ac == NULL)
- return FAIL;
- ac->cmd = vim_strsave(cmd);
- #ifdef FEAT_EVAL
- ac->scriptID = current_SID;
- #endif
- if (ac->cmd == NULL)
- {
- vim_free(ac);
- return FAIL;
- }
- ac->next = NULL;
- *prev_ac = ac;
- ac->nested = (event == EVENT_FILECHANGEDSHELL ? FALSE : nested);
- }
- }
-
- au_cleanup(); /* may really delete removed patterns/commands now */
- return OK;
- }
-
- /*
- * Implementation of ":doautocmd [group] event [fname]".
- * Return OK for success, FAIL for failure;
- */
- int
- do_doautocmd(arg, do_msg)
- char_u *arg;
- int do_msg; /* give message for no matching autocmds? */
- {
- char_u *fname;
- int nothing_done = TRUE;
- int group;
-
- /*
- * Check for a legal group name. If not, use AUGROUP_ALL.
- */
- group = au_get_grouparg(&arg);
- if (arg == NULL) /* out of memory */
- return FAIL;
-
- if (*arg == '*')
- {
- EMSG(_("E217: Can't execute autocommands for ALL events"));
- return FAIL;
- }
-
- /*
- * Scan over the events.
- * If we find an illegal name, return here, don't do anything.
- */
- fname = find_end_event(arg);
- if (fname == NULL)
- return FAIL;
-
- fname = skipwhite(fname);
-
- /*
- * Loop over the events.
- */
- while (*arg && !vim_iswhite(*arg))
- if (apply_autocmds_group(event_name2nr(arg, &arg),
- fname, NULL, TRUE, group, curbuf, NULL))
- nothing_done = FALSE;
-
- if (nothing_done && do_msg)
- MSG(_("No matching autocommands"));
-
- return OK;
- }
-
- /*
- * ":doautoall": execute autocommands for each loaded buffer.
- */
- void
- ex_doautoall(eap)
- exarg_T *eap;
- {
- int retval;
- aco_save_T aco;
- buf_T *buf;
-
- /*
- * This is a bit tricky: For some commands curwin->w_buffer needs to be
- * equal to curbuf, but for some buffers there may not be a window.
- * So we change the buffer for the current window for a moment. This
- * gives problems when the autocommands make changes to the list of
- * buffers or windows...
- */
- for (buf = firstbuf; buf != NULL; buf = buf->b_next)
- {
- if (curbuf->b_ml.ml_mfp != NULL)
- {
- /* find a window for this buffer and save some values */
- aucmd_prepbuf(&aco, buf);
-
- /* execute the autocommands for this buffer */
- retval = do_doautocmd(eap->arg, FALSE);
- do_modelines();
-
- /* restore the current window */
- aucmd_restbuf(&aco);
-
- /* stop if there is some error or buffer was deleted */
- if (retval == FAIL || !buf_valid(buf))
- break;
- }
- }
-
- check_cursor(); /* just in case lines got deleted */
- }
-
- /*
- * Prepare for executing autocommands for (hidden) buffer "buf".
- * Search a window for the current buffer. Save the cursor position and
- * screen offset.
- * Set "curbuf" and "curwin" to match "buf".
- */
- void
- aucmd_prepbuf(aco, buf)
- aco_save_T *aco; /* structure to save values in */
- buf_T *buf; /* new curbuf */
- {
- win_T *win;
-
- aco->new_curbuf = buf;
-
- /* Find a window that is for the new buffer */
- if (buf == curbuf) /* be quick when buf is curbuf */
- win = curwin;
- else
- #ifdef FEAT_WINDOWS
- for (win = firstwin; win != NULL; win = win->w_next)
- if (win->w_buffer == buf)
- break;
- #else
- win = NULL;
- #endif
-
- /*
- * Prefer to use an existing window for the buffer, it has the least side
- * effects (esp. if "buf" is curbuf).
- * Otherwise, use curwin for "buf". It might make some items in the
- * window invalid. At least save the cursor and topline.
- */
- if (win != NULL)
- {
- /* there is a window for "buf", make it the curwin */
- aco->save_curwin = curwin;
- curwin = win;
- aco->save_buf = win->w_buffer;
- aco->new_curwin = win;
- }
- else
- {
- /* there is no window for "buf", use curwin */
- aco->save_curwin = NULL;
- aco->save_buf = curbuf;
- --curbuf->b_nwindows;
- curwin->w_buffer = buf;
- ++buf->b_nwindows;
-
- /* save cursor and topline, set them to safe values */
- aco->save_cursor = curwin->w_cursor;
- curwin->w_cursor.lnum = 1;
- curwin->w_cursor.col = 0;
- aco->save_topline = curwin->w_topline;
- curwin->w_topline = 1;
- #ifdef FEAT_DIFF
- aco->save_topfill = curwin->w_topfill;
- curwin->w_topfill = 0;
- #endif
- }
-
- curbuf = buf;
- }
-
- /*
- * Cleanup after executing autocommands for a (hidden) buffer.
- * Restore the window as it was (if possible).
- */
- void
- aucmd_restbuf(aco)
- aco_save_T *aco; /* structure holding saved values */
- {
- if (aco->save_curwin != NULL)
- {
- /* restore curwin */
- #ifdef FEAT_WINDOWS
- if (win_valid(aco->save_curwin))
- #endif
- {
- /* restore the buffer which was previously edited by curwin, if
- * it's still the same window and it's valid */
- if (curwin == aco->new_curwin
- && buf_valid(aco->save_buf)
- && aco->save_buf->b_ml.ml_mfp != NULL)
- {
- --curbuf->b_nwindows;
- curbuf = aco->save_buf;
- curwin->w_buffer = curbuf;
- ++curbuf->b_nwindows;
- }
-
- curwin = aco->save_curwin;
- curbuf = curwin->w_buffer;
- }
- }
- else
- {
- /* restore buffer for curwin if it still exists and is loaded */
- if (buf_valid(aco->save_buf) && aco->save_buf->b_ml.ml_mfp != NULL)
- {
- --curbuf->b_nwindows;
- curbuf = aco->save_buf;
- curwin->w_buffer = curbuf;
- ++curbuf->b_nwindows;
- curwin->w_cursor = aco->save_cursor;
- check_cursor();
- /* check topline < line_count, in case lines got deleted */
- if (aco->save_topline <= curbuf->b_ml.ml_line_count)
- {
- curwin->w_topline = aco->save_topline;
- #ifdef FEAT_DIFF
- curwin->w_topfill = aco->save_topfill;
- #endif
- }
- else
- {
- curwin->w_topline = curbuf->b_ml.ml_line_count;
- #ifdef FEAT_DIFF
- curwin->w_topfill = 0;
- #endif
- }
- }
- }
- }
-
- static int autocmd_nested = FALSE;
-
- /*
- * Execute autocommands for "event" and file name "fname".
- * Return TRUE if some commands were executed.
- */
- int
- apply_autocmds(event, fname, fname_io, force, buf)
- EVENT_T event;
- char_u *fname; /* NULL or empty means use actual file name */
- char_u *fname_io; /* fname to use for <afile> on cmdline */
- int force; /* when TRUE, ignore autocmd_busy */
- buf_T *buf; /* buffer for <abuf> */
- {
- return apply_autocmds_group(event, fname, fname_io, force,
- AUGROUP_ALL, buf, NULL);
- }
-
- /*
- * Like apply_autocmds(), but with extra "eap" argument. This takes care of
- * setting v:filearg.
- */
- static int
- apply_autocmds_exarg(event, fname, fname_io, force, buf, eap)
- EVENT_T event;
- char_u *fname;
- char_u *fname_io;
- int force;
- buf_T *buf;
- exarg_T *eap;
- {
- return apply_autocmds_group(event, fname, fname_io, force,
- AUGROUP_ALL, buf, eap);
- }
-
- #if defined(FEAT_AUTOCMD) || defined(PROTO)
- int
- has_cursorhold()
- {
- return (first_autopat[(int)EVENT_CURSORHOLD] != NULL);
- }
- #endif
-
- static int
- apply_autocmds_group(event, fname, fname_io, force, group, buf, eap)
- EVENT_T event;
- char_u *fname; /* NULL or empty means use actual file name */
- char_u *fname_io; /* fname to use for <afile> on cmdline, NULL means
- use fname */
- int force; /* when TRUE, ignore autocmd_busy */
- int group; /* group ID, or AUGROUP_ALL */
- buf_T *buf; /* buffer for <abuf> */
- exarg_T *eap; /* command arguments */
- {
- char_u *sfname = NULL; /* short file name */
- char_u *tail;
- int save_changed;
- buf_T *old_curbuf;
- int retval = FALSE;
- char_u *save_sourcing_name;
- linenr_T save_sourcing_lnum;
- char_u *save_autocmd_fname;
- int save_autocmd_bufnr;
- char_u *save_autocmd_match;
- int save_autocmd_busy;
- int save_autocmd_nested;
- static int nesting = 0;
- AutoPatCmd patcmd;
- AutoPat *ap;
- #ifdef FEAT_EVAL
- scid_T save_current_SID;
- void *save_funccalp;
- char_u *save_cmdarg;
- #endif
-
- /*
- * Quickly return if there are no autocommands for this event.
- */
- if (first_autopat[(int)event] == NULL)
- return retval;
-
- /*
- * When autocommands are busy, new autocommands are only executed when
- * explicitly enabled with the "nested" flag.
- */
- if (autocmd_busy && !(force || autocmd_nested))
- return retval;
-
- /*
- * Ignore events in 'eventignore'.
- */
- if (event_ignored(event))
- return retval;
-
- /*
- * Allow nesting of autocommands, but restrict the depth, because it's
- * possible to create an endless loop.
- */
- if (nesting == 10)
- {
- EMSG(_("E218: autocommand nesting too deep"));
- return retval;
- }
-
- /*
- * Check if these autocommands are disabled. Used when doing ":all" or
- * ":ball".
- */
- if ( (autocmd_no_enter
- && (event == EVENT_WINENTER || event == EVENT_BUFENTER))
- || (autocmd_no_leave
- && (event == EVENT_WINLEAVE || event == EVENT_BUFLEAVE)))
- return retval;
-
- /*
- * Save the autocmd_* variables and info about the current buffer.
- */
- save_autocmd_fname = autocmd_fname;
- save_autocmd_bufnr = autocmd_bufnr;
- save_autocmd_match = autocmd_match;
- save_autocmd_busy = autocmd_busy;
- save_autocmd_nested = autocmd_nested;
- save_changed = curbuf->b_changed;
- old_curbuf = curbuf;
-
- /*
- * Set the file name to be used for <afile>.
- */
- if (fname_io == NULL)
- {
- if (fname != NULL && *fname != NUL)
- autocmd_fname = fname;
- else if (buf != NULL)
- autocmd_fname = buf->b_fname;
- else
- autocmd_fname = NULL;
- }
- else
- autocmd_fname = fname_io;
-
- /*
- * Set the buffer number to be used for <abuf>.
- */
- if (buf == NULL)
- autocmd_bufnr = 0;
- else
- autocmd_bufnr = buf->b_fnum;
-
- /*
- * When the file name is NULL or empty, use the file name of buffer "buf".
- * Always use the full path of the file name to match with, in case
- * "allow_dirs" is set.
- */
- if (fname == NULL || *fname == NUL)
- {
- if (buf == NULL)
- fname = NULL;
- else
- {
- #ifdef FEAT_SYN_HL
- if (event == EVENT_SYNTAX)
- fname = buf->b_p_syn;
- else
- #endif
- if (event == EVENT_FILETYPE)
- fname = buf->b_p_ft;
- else
- {
- if (buf->b_sfname != NULL)
- sfname = vim_strsave(buf->b_sfname);
- fname = buf->b_ffname;
- }
- }
- if (fname == NULL)
- fname = (char_u *)"";
- fname = vim_strsave(fname); /* make a copy, so we can change it */
- }
- else
- {
- sfname = vim_strsave(fname);
- /* Don't try expanding FileType, Syntax or WindowID. */
- if (event == EVENT_FILETYPE || event == EVENT_SYNTAX
- || event == EVENT_REMOTEREPLY)
- fname = vim_strsave(fname);
- else
- fname = FullName_save(fname, FALSE);
- }
- if (fname == NULL) /* out of memory */
- {
- vim_free(sfname);
- return FALSE;
- }
-
- #ifdef BACKSLASH_IN_FILENAME
- /*
- * Replace all backslashes with forward slashes. This makes the
- * autocommand patterns portable between Unix and MS-DOS.
- * Watch out for the Big5 encoding, it has '\' in the trail byte.
- */
- {
- char_u *p;
-
- if (sfname != NULL)
- {
- for (p = sfname; *p; ++p)
- # ifdef FEAT_MBYTE
- if (enc_dbcs != 0 && (*mb_ptr2len_check)(p) > 1)
- ++p;
- else
- # endif
- if (*p == '\\')
- *p = '/';
- }
- for (p = fname; *p; ++p)
- # ifdef FEAT_MBYTE
- if (enc_dbcs != 0 && (*mb_ptr2len_check)(p) > 1)
- ++p;
- else
- # endif
- if (*p == '\\')
- *p = '/';
- }
- #endif
-
- #ifdef VMS
- /* remove version for correct match */
- if (sfname != NULL)
- vms_remove_version(sfname);
- vms_remove_version(fname);
- #endif
-
- /*
- * Set the name to be used for <amatch>.
- */
- autocmd_match = fname;
-
-
- /* Don't redraw while doing auto commands. */
- ++RedrawingDisabled;
- save_sourcing_name = sourcing_name;
- sourcing_name = NULL; /* don't free this one */
- save_sourcing_lnum = sourcing_lnum;
- sourcing_lnum = 0; /* no line number here */
-
- #ifdef FEAT_EVAL
- save_current_SID = current_SID;
-
- /* Don't use local function variables, if called from a function */
- save_funccalp = save_funccal();
- #endif
-
- /*
- * When starting to execute autocommands, save the search patterns.
- */
- if (!autocmd_busy)
- {
- save_search_patterns();
- saveRedobuff();
- did_filetype = keep_filetype;
- }
-
- /*
- * Note that we are applying autocmds. Some commands need to know.
- */
- autocmd_busy = TRUE;
- ++nesting;
-
- /* Remember that FileType was triggered. Used for did_filetype(). */
- if (event == EVENT_FILETYPE)
- did_filetype = TRUE;
-
- tail = gettail(fname);
-
- /* Find first autocommand that matches */
- patcmd.curpat = first_autopat[(int)event];
- patcmd.nextcmd = NULL;
- patcmd.group = group;
- patcmd.fname = fname;
- patcmd.sfname = sfname;
- patcmd.tail = tail;
- patcmd.event = event;
- auto_next_pat(&patcmd, FALSE);
-
- /* found one, start executing the autocommands */
- if (patcmd.curpat != NULL)
- {
- #ifdef FEAT_EVAL
- /* set v:cmdarg (only when there is a matching pattern) */
- if (eap != NULL)
- save_cmdarg = set_cmdarg(eap, NULL);
- else
- save_cmdarg = NULL; /* avoid gcc warning */
- #endif
- retval = TRUE;
- /* mark the last pattern, to avoid an endless loop when more patterns
- * are added when executing autocommands */
- for (ap = patcmd.curpat; ap->next != NULL; ap = ap->next)
- ap->last = FALSE;
- ap->last = TRUE;
- check_lnums(TRUE); /* make sure cursor and topline are valid */
- do_cmdline(NULL, getnextac, (void *)&patcmd,
- DOCMD_NOWAIT|DOCMD_VERBOSE|DOCMD_REPEAT);
- #ifdef FEAT_EVAL
- if (eap != NULL)
- (void)set_cmdarg(NULL, save_cmdarg);
- #endif
- }
-
- --RedrawingDisabled;
- autocmd_busy = save_autocmd_busy;
- autocmd_nested = save_autocmd_nested;
- vim_free(sourcing_name);
- sourcing_name = save_sourcing_name;
- sourcing_lnum = save_sourcing_lnum;
- autocmd_fname = save_autocmd_fname;
- autocmd_bufnr = save_autocmd_bufnr;
- autocmd_match = save_autocmd_match;
- #ifdef FEAT_EVAL
- current_SID = save_current_SID;
- restore_funccal(save_funccalp);
- #endif
- vim_free(fname);
- vim_free(sfname);
- --nesting;
-
- /*
- * When stopping to execute autocommands, restore the search patterns and
- * the redo buffer.
- */
- if (!autocmd_busy)
- {
- restore_search_patterns();
- restoreRedobuff();
- did_filetype = FALSE;
- }
-
- /*
- * Some events don't set or reset the Changed flag.
- * Check if still in the same buffer!
- */
- if (curbuf == old_curbuf
- && (event == EVENT_BUFREADPOST
- || event == EVENT_BUFWRITEPOST
- || event == EVENT_FILEAPPENDPOST
- || event == EVENT_VIMLEAVE
- || event == EVENT_VIMLEAVEPRE))
- {
- #ifdef FEAT_TITLE
- if (curbuf->b_changed != save_changed)
- need_maketitle = TRUE;
- #endif
- curbuf->b_changed = save_changed;
- }
-
- au_cleanup(); /* may really delete removed patterns/commands now */
- return retval;
- }
-
- /*
- * Find next autocommand pattern that matches.
- */
- static void
- auto_next_pat(apc, stop_at_last)
- AutoPatCmd *apc;
- int stop_at_last; /* stop when 'last' flag is set */
- {
- AutoPat *ap;
- AutoCmd *cp;
- char_u *name;
- char *s;
-
- vim_free(sourcing_name);
- sourcing_name = NULL;
-
- for (ap = apc->curpat; ap != NULL && !got_int; ap = ap->next)
- {
- apc->curpat = NULL;
-
- /* only use a pattern when it has not been removed, has commands and
- * the group matches */
- if (ap->pat != NULL && ap->cmds != NULL
- && (apc->group == AUGROUP_ALL || apc->group == ap->group))
- {
- if (match_file_pat(ap->reg_pat, apc->fname, apc->sfname, apc->tail,
- ap->allow_dirs))
- {
- name = event_nr2name(apc->event);
- s = _("%s Auto commands for \"%s\"");
- sourcing_name = alloc((unsigned)(STRLEN(s)
- + STRLEN(name) + ap->patlen + 1));
- if (sourcing_name != NULL)
- {
- sprintf((char *)sourcing_name, s,
- (char *)name, (char *)ap->pat);
- if (p_verbose >= 8)
- smsg((char_u *)_("Executing %s"), sourcing_name);
- }
-
- apc->curpat = ap;
- apc->nextcmd = ap->cmds;
- /* mark last command */
- for (cp = ap->cmds; cp->next != NULL; cp = cp->next)
- cp->last = FALSE;
- cp->last = TRUE;
- }
- line_breakcheck();
- if (apc->curpat != NULL) /* found a match */
- break;
- }
- if (stop_at_last && ap->last)
- break;
- }
- }
-
- /*
- * Get next autocommand command.
- * Called by do_cmdline() to get the next line for ":if".
- * Returns allocated string, or NULL for end of autocommands.
- */
- /* ARGSUSED */
- static char_u *
- getnextac(c, cookie, indent)
- int c; /* not used */
- void *cookie;
- int indent; /* not used */
- {
- AutoPatCmd *acp = (AutoPatCmd *)cookie;
- char_u *retval;
- AutoCmd *ac;
-
- /* Can be called again after returning the last line. */
- if (acp->curpat == NULL)
- return NULL;
-
- /* repeat until we find an autocommand to execute */
- for (;;)
- {
- /* skip removed commands */
- while (acp->nextcmd != NULL && acp->nextcmd->cmd == NULL)
- if (acp->nextcmd->last)
- acp->nextcmd = NULL;
- else
- acp->nextcmd = acp->nextcmd->next;
-
- if (acp->nextcmd != NULL)
- break;
-
- /* at end of commands, find next pattern that matches */
- if (acp->curpat->last)
- acp->curpat = NULL;
- else
- acp->curpat = acp->curpat->next;
- if (acp->curpat != NULL)
- auto_next_pat(acp, TRUE);
- if (acp->curpat == NULL)
- return NULL;
- }
-
- ac = acp->nextcmd;
-
- if (p_verbose >= 9)
- {
- msg_scroll = TRUE; /* always scroll up, don't overwrite */
- smsg((char_u *)_("autocommand %s"), ac->cmd);
- msg_puts((char_u *)"\n"); /* don't overwrite this either */
- cmdline_row = msg_row;
- }
- retval = vim_strsave(ac->cmd);
- autocmd_nested = ac->nested;
- #ifdef FEAT_EVAL
- current_SID = ac->scriptID;
- #endif
- if (ac->last)
- acp->nextcmd = NULL;
- else
- acp->nextcmd = ac->next;
- return retval;
- }
-
- #if defined(FEAT_CMDL_COMPL) || defined(PROTO)
- /*
- * Function given to ExpandGeneric() to obtain the list of autocommand group
- * names.
- */
- /*ARGSUSED*/
- char_u *
- get_augroup_name(xp, idx)
- expand_T *xp;
- int idx;
- {
- if (idx == augroups.ga_len) /* add "END" add the end */
- return (char_u *)"END";
- if (idx >= augroups.ga_len) /* end of list */
- return NULL;
- if (AUGROUP_NAME(idx) == NULL) /* skip deleted entries */
- return (char_u *)"";
- return AUGROUP_NAME(idx); /* return a name */
- }
-
- static int include_groups = FALSE;
-
- char_u *
- set_context_in_autocmd(xp, arg, doautocmd)
- expand_T *xp;
- char_u *arg;
- int doautocmd; /* TRUE for :doautocmd, FALSE for :autocmd */
- {
- char_u *p;
- int group;
-
- /* check for a group name, skip it if present */
- include_groups = FALSE;
- p = arg;
- group = au_get_grouparg(&arg);
- if (group == AUGROUP_ERROR)
- return NULL;
- /* If there only is a group name that's what we expand. */
- if (*arg == NUL && group != AUGROUP_ALL && !vim_iswhite(arg[-1]))
- {
- arg = p;
- group = AUGROUP_ALL;
- }
-
- /* skip over event name */
- for (p = arg; *p != NUL && !vim_iswhite(*p); ++p)
- if (*p == ',')
- arg = p + 1;
- if (*p == NUL)
- {
- if (group == AUGROUP_ALL)
- include_groups = TRUE;
- xp->xp_context = EXPAND_EVENTS; /* expand event name */
- xp->xp_pattern = arg;
- return NULL;
- }
-
- /* skip over pattern */
- arg = skipwhite(p);
- while (*arg && (!vim_iswhite(*arg) || arg[-1] == '\\'))
- arg++;
- if (*arg)
- return arg; /* expand (next) command */
-
- if (doautocmd)
- xp->xp_context = EXPAND_FILES; /* expand file names */
- else
- xp->xp_context = EXPAND_NOTHING; /* pattern is not expanded */
- return NULL;
- }
-
- /*
- * Function given to ExpandGeneric() to obtain the list of event names.
- */
- /*ARGSUSED*/
- char_u *
- get_event_name(xp, idx)
- expand_T *xp;
- int idx;
- {
- if (idx < augroups.ga_len) /* First list group names, if wanted */
- {
- if (!include_groups || AUGROUP_NAME(idx) == NULL)
- return (char_u *)""; /* skip deleted entries */
- return AUGROUP_NAME(idx); /* return a name */
- }
- return (char_u *)event_names[idx - augroups.ga_len].name;
- }
-
- #endif /* FEAT_CMDL_COMPL */
-
- /*
- * Return TRUE if an autocommand is defined for "event" and "pattern".
- * "pattern" can be NULL to accept any pattern.
- */
- int
- au_exists(name, name_end, pattern)
- char_u *name;
- char_u *name_end;
- char_u *pattern;
- {
- char_u *event_name;
- char_u *p;
- EVENT_T event;
- AutoPat *ap;
-
- /* find the index (enum) for the event name */
- event_name = vim_strnsave(name, (int)(name_end - name));
- if (event_name == NULL)
- return FALSE;
- event = event_name2nr(event_name, &p);
- vim_free(event_name);
-
- /* return FALSE if the event name is not recognized */
- if (event == NUM_EVENTS) /* unknown event name */
- return FALSE;
-
- /* Find the first autocommand for this event.
- * If there isn't any, return FALSE;
- * If there is one and no pattern given, return TRUE; */
- ap = first_autopat[(int)event];
- if (ap == NULL)
- return FALSE;
- if (pattern == NULL)
- return TRUE;
-
- /* Check if there is an autocommand with the given pattern. */
- for ( ; ap != NULL; ap = ap->next)
- /* only use a pattern when it has not been removed and has commands */
- if (ap->pat != NULL && ap->cmds != NULL
- && fnamecmp(ap->pat, pattern) == 0)
- return TRUE;
-
- return FALSE;
- }
- #endif /* FEAT_AUTOCMD */
-
- #if defined(FEAT_AUTOCMD) || defined(FEAT_WILDIGN) || defined(PROTO)
- /*
- * Try matching a filename with a pattern.
- * Used for autocommands and 'wildignore'.
- * Returns TRUE if there is a match, FALSE otherwise.
- */
- int
- match_file_pat(pattern, fname, sfname, tail, allow_dirs)
- char_u *pattern; /* pattern to match with */
- char_u *fname; /* full path of file name */
- char_u *sfname; /* short file name or NULL */
- char_u *tail; /* tail of path */
- int allow_dirs; /* allow matching with dir */
- {
- regmatch_T regmatch;
- int result = FALSE;
- #ifdef FEAT_OSFILETYPE
- int no_pattern = FALSE; /* TRUE if check is filetype only */
- char_u *type_start;
- char_u c;
- int match = FALSE;
- #endif
-
- #ifdef CASE_INSENSITIVE_FILENAME
- regmatch.rm_ic = TRUE; /* Always ignore case */
- #else
- regmatch.rm_ic = FALSE; /* Don't ever ignore case */
- #endif
- #ifdef FEAT_OSFILETYPE
- if (*pattern == '<')
- {
- /* There is a filetype condition specified with this pattern.
- * Check the filetype matches first. If not, don't bother with the
- * pattern (set regprog to NULL).
- * Always use magic for the regexp.
- */
-
- for (type_start = pattern + 1; (c = *pattern); pattern++)
- {
- if ((c == ';' || c == '>') && match == FALSE)
- {
- *pattern = NUL; /* Terminate the string */
- match = mch_check_filetype(fname, type_start);
- *pattern = c; /* Restore the terminator */
- type_start = pattern + 1;
- }
- if (c == '>')
- break;
- }
-
- /* (c should never be NUL, but check anyway) */
- if (match == FALSE || c == NUL)
- regmatch.regprog = NULL; /* Doesn't match - don't check pat. */
- else if (*pattern == NUL)
- {
- regmatch.regprog = NULL; /* Vim will try to free regprog later */
- no_pattern = TRUE; /* Always matches - don't check pat. */
- }
- else
- regmatch.regprog = vim_regcomp(pattern + 1, TRUE);
- }
- else
- #endif
- regmatch.regprog = vim_regcomp(pattern, TRUE);
-
- /*
- * Try for a match with the pattern with:
- * 1. the full file name, when the pattern has a '/'.
- * 2. the short file name, when the pattern has a '/'.
- * 3. the tail of the file name, when the pattern has no '/'.
- */
- if (
- #ifdef FEAT_OSFILETYPE
- /* If the check is for a filetype only and we don't care
- * about the path then skip all the regexp stuff.
- */
- no_pattern ||
- #endif
- (regmatch.regprog != NULL
- && ((allow_dirs
- && (vim_regexec(®match, fname, (colnr_T)0)
- || (sfname != NULL
- && vim_regexec(®match, sfname, (colnr_T)0))))
- || (!allow_dirs && vim_regexec(®match, tail, (colnr_T)0)))))
- result = TRUE;
-
- vim_free(regmatch.regprog);
- return result;
- }
- #endif
-
- #if defined(FEAT_WILDIGN) || defined(PROTO)
- /*
- * Return TRUE if a file matches with a pattern in "list".
- * "list" is a comma-separated list of patterns, like 'wildignore'.
- * "sfname" is the short file name or NULL, "ffname" the long file name.
- */
- int
- match_file_list(list, sfname, ffname)
- char_u *list;
- char_u *sfname;
- char_u *ffname;
- {
- char_u buf[100];
- char_u *tail;
- char_u *regpat;
- char allow_dirs;
- int match;
- char_u *p;
-
- tail = gettail(sfname);
-
- /* try all patterns in 'wildignore' */
- p = list;
- while (*p)
- {
- copy_option_part(&p, buf, 100, ",");
- regpat = file_pat_to_reg_pat(buf, NULL, &allow_dirs, FALSE);
- if (regpat == NULL)
- break;
- match = match_file_pat(regpat, ffname, sfname, tail, (int)allow_dirs);
- vim_free(regpat);
- if (match)
- return TRUE;
- }
- return FALSE;
- }
- #endif
-
- /*
- * Convert the given pattern "pat" which has shell style wildcards in it, into
- * a regular expression, and return the result in allocated memory. If there
- * is a directory path separator to be matched, then TRUE is put in
- * allow_dirs, otherwise FALSE is put there -- webb.
- * Handle backslashes before special characters, like "\*" and "\ ".
- *
- * If FEAT_OSFILETYPE defined then pass initial <type> through unchanged. Eg:
- * '<html>myfile' becomes '<html>^myfile$' -- leonard.
- *
- * Returns NULL when out of memory.
- */
- /*ARGSUSED*/
- char_u *
- file_pat_to_reg_pat(pat, pat_end, allow_dirs, no_bslash)
- char_u *pat;
- char_u *pat_end; /* first char after pattern or NULL */
- char *allow_dirs; /* Result passed back out in here */
- int no_bslash; /* Don't use a backward slash as pathsep */
- {
- int size;
- char_u *endp;
- char_u *reg_pat;
- char_u *p;
- int i;
- int nested = 0;
- int add_dollar = TRUE;
- #ifdef FEAT_OSFILETYPE
- int check_length = 0;
- #endif
-
- if (allow_dirs != NULL)
- *allow_dirs = FALSE;
- if (pat_end == NULL)
- pat_end = pat + STRLEN(pat);
-
- #ifdef FEAT_OSFILETYPE
- /* Find out how much of the string is the filetype check */
- if (*pat == '<')
- {
- /* Count chars until the next '>' */
- for (p = pat + 1; p < pat_end && *p != '>'; p++)
- ;
- if (p < pat_end)
- {
- /* Pattern is of the form <.*>.* */
- check_length = p - pat + 1;
- if (p + 1 >= pat_end)
- {
- /* The 'pattern' is a filetype check ONLY */
- reg_pat = (char_u *)alloc(check_length + 1);
- if (reg_pat != NULL)
- {
- mch_memmove(reg_pat, pat, check_length);
- reg_pat[check_length] = NUL;
- }
- return reg_pat;
- }
- }
- /* else: there was no closing '>' - assume it was a normal pattern */
-
- }
- pat += check_length;
- size = 2 + check_length;
- #else
- size = 2; /* '^' at start, '$' at end */
- #endif
-
- for (p = pat; p < pat_end; p++)
- {
- switch (*p)
- {
- case '*':
- case '.':
- case ',':
- case '{':
- case '}':
- case '~':
- size += 2; /* extra backslash */
- break;
- #ifdef BACKSLASH_IN_FILENAME
- case '\\':
- case '/':
- size += 4; /* could become "[\/]" */
- break;
- #endif
- default:
- size++;
- # ifdef FEAT_MBYTE
- if (enc_dbcs != 0 && (*mb_ptr2len_check)(p) > 1)
- {
- ++p;
- ++size;
- }
- # endif
- break;
- }
- }
- reg_pat = alloc(size + 1);
- if (reg_pat == NULL)
- return NULL;
-
- #ifdef FEAT_OSFILETYPE
- /* Copy the type check in to the start. */
- if (check_length)
- mch_memmove(reg_pat, pat - check_length, check_length);
- i = check_length;
- #else
- i = 0;
- #endif
-
- if (pat[0] == '*')
- while (pat[0] == '*' && pat < pat_end - 1)
- pat++;
- else
- reg_pat[i++] = '^';
- endp = pat_end - 1;
- if (*endp == '*')
- {
- while (endp - pat > 0 && *endp == '*')
- endp--;
- add_dollar = FALSE;
- }
- for (p = pat; *p && nested >= 0 && p <= endp; p++)
- {
- switch (*p)
- {
- case '*':
- reg_pat[i++] = '.';
- reg_pat[i++] = '*';
- break;
- case '.':
- #ifdef RISCOS
- if (allow_dirs != NULL)
- *allow_dirs = TRUE;
- /* FALLTHROUGH */
- #endif
- case '~':
- reg_pat[i++] = '\\';
- reg_pat[i++] = *p;
- break;
- case '?':
- #ifdef RISCOS
- case '#':
- #endif
- reg_pat[i++] = '.';
- break;
- case '\\':
- if (p[1] == NUL)
- break;
- #ifdef BACKSLASH_IN_FILENAME
- if (!no_bslash)
- {
- /* translate:
- * "\x" to "\\x" e.g., "dir\file"
- * "\*" to "\\.*" e.g., "dir\*.c"
- * "\?" to "\\." e.g., "dir\??.c"
- * "\+" to "\+" e.g., "fileX\+.c"
- */
- if ((vim_isfilec(p[1]) || p[1] == '*' || p[1] == '?')
- && p[1] != '+')
- {
- reg_pat[i++] = '[';
- reg_pat[i++] = '\\';
- reg_pat[i++] = '/';
- reg_pat[i++] = ']';
- if (allow_dirs != NULL)
- *allow_dirs = TRUE;
- break;
- }
- }
- #endif
- if (*++p == '?'
- #ifdef BACKSLASH_IN_FILENAME
- && no_bslash
- #endif
- )
- reg_pat[i++] = '?';
- else
- if (*p == ',')
- reg_pat[i++] = ',';
- else
- {
- if (allow_dirs != NULL && vim_ispathsep(*p)
- #ifdef BACKSLASH_IN_FILENAME
- && (!no_bslash || *p != '\\')
- #endif
- )
- *allow_dirs = TRUE;
- reg_pat[i++] = '\\';
- reg_pat[i++] = *p;
- }
- break;
- #ifdef BACKSLASH_IN_FILENAME
- case '/':
- reg_pat[i++] = '[';
- reg_pat[i++] = '\\';
- reg_pat[i++] = '/';
- reg_pat[i++] = ']';
- if (allow_dirs != NULL)
- *allow_dirs = TRUE;
- break;
- #endif
- case '{':
- reg_pat[i++] = '\\';
- reg_pat[i++] = '(';
- nested++;
- break;
- case '}':
- reg_pat[i++] = '\\';
- reg_pat[i++] = ')';
- --nested;
- break;
- case ',':
- if (nested)
- {
- reg_pat[i++] = '\\';
- reg_pat[i++] = '|';
- }
- else
- reg_pat[i++] = ',';
- break;
- default:
- # ifdef FEAT_MBYTE
- if (enc_dbcs != 0 && (*mb_ptr2len_check)(p) > 1)
- reg_pat[i++] = *p++;
- else
- # endif
- if (allow_dirs != NULL && vim_ispathsep(*p))
- *allow_dirs = TRUE;
- reg_pat[i++] = *p;
- break;
- }
- }
- if (add_dollar)
- reg_pat[i++] = '$';
- reg_pat[i] = NUL;
- if (nested != 0)
- {
- if (nested < 0)
- EMSG(_("E219: Missing {."));
- else
- EMSG(_("E220: Missing }."));
- vim_free(reg_pat);
- reg_pat = NULL;
- }
- return reg_pat;
- }
-