Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/misc/volume37/vim/part08

Text File | 1993-04-23 | 54KB | 2,317 lines

Newsgroups: comp.sources.misc
From: [e-mail] (Bram Moolenaar)
Subject: v37i008:  vim - Vi IMitation editor v1.27, Part08/24
Message-ID: <[e-mail]>
X-Md4-Signature: 828bada50568f29a1bbd1595b9b8f97b
Date: Fri, 23 Apr 1993 17:31:36 GMT
Approved: [e-mail]

Submitted-by: [e-mail] (Bram Moolenaar)
Posting-number: Volume 37, Issue 8
Archive-name: vim/part08
Environment: UNIX, AMIGA, MS-DOS

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#        "End of archive 8 (of 23)."
# Contents:  vim/src/edit.c vim/src/param.c vim/src/unix.c
# Wrapped by mool@oce-rd2 on Mon Apr 19 15:50:09 1993
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'vim/src/edit.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'vim/src/edit.c'\"
else
echo shar: Extracting \"'vim/src/edit.c'\" \(16324 characters\)
sed "s/^X//" >'vim/src/edit.c' <<'END_OF_FILE'
X/* vi:ts=4:sw=4
X *
X * VIM - Vi IMitation
X *
X * Code Contributions By:    Bram Moolenaar            [e-mail]
X *                            Tim Thompson            twitch!tjt
X *                            Tony Andrews            onecom!wldrdg!tony
X *                            G. R. (Fred) Walter        watmath!watcgl!grwalter
X */
X
X/*
X * edit.c: functions for insert mode
X */
X
X#include "vim.h"
X#include "globals.h"
X#include "proto.h"
X#include "param.h"
X#include "ops.h"    /* for operator */
X
Xextern u_char *get_inserted();
Xstatic void start_arrow __ARGS((void));
Xstatic void stop_arrow __ARGS((void));
Xstatic void stop_insert __ARGS((void));
X
Xint arrow_used;            /* Normally FALSE, set to TRUE after hitting
X                             * cursor key in insert mode. Used by vgetorpeek()
X                             * to decide when to call u_sync() */
Xint restart_edit;        /* call edit when next command finished */
Xstatic u_char    *last_insert = NULL;
X                            /* the text of the previous insert */
Xstatic int        last_insert_skip;
X                            /* number of chars in front of the previous insert */
Xstatic int        new_insert_skip;
X                            /* number of chars in front of the current insert */
X
X    void
Xedit(count)
X    long count;
X{
X    u_char         c;
X    u_char         cc;
X    u_char        *ptr;
X    linenr_t     lnum;
X    int          temp = 0, mode;
X    int             nextc = 0;
X
X#ifdef DIGRAPHS
X    int             inserted = 0;        /* last 'normal' inserted char */
X    int             backspaced = 0;    /* last backspace char */
X#endif /* DIGRAPHS */
X
X    if (restart_edit)
X    {
X        arrow_used = TRUE;
X        restart_edit = FALSE;
X    }
X    else
X        arrow_used = FALSE;
X
X/*
X * Get the current length of the redo buffer, those characters have to be
X * skipped if we want to get to the inserted characters.
X */
X
X    ptr = get_inserted();
X    new_insert_skip = strlen((char *)ptr);
X    free(ptr);
X
X    for (;;)
X    {
X        if (arrow_used)        /* don't repeat insert when arrow key used */
X            count = 0;
X
X        set_want_col = TRUE;    /* set Curswant in case of K_DARROW or K_UARROW */
X        cursupdate();        /* Figure out where the cursor is based on Curpos. */
X        setcursor();
X        if (nextc)            /* character remaining from CTRL-V */
X        {
X            c = nextc;
X            nextc = 0;
X        }
X        else
X            c = vgetc();
X
X#ifdef DIGRAPHS
X        if (p_dg)
X        {
X            if (backspaced)
X                c = getdigraph(backspaced, c);
X            backspaced = 0;
X            if (c == BS && inserted)
X                backspaced = inserted;
X            else
X                inserted = c;
X        }
X#endif /* DIGRAPHS */
X
X        if (c == Ctrl('V'))
X        {
X                outchar('^');
X                AppendToRedobuff("\026");    /* CTRL-V */
X                cursupdate();
X                setcursor();
X
X                c = get_literal(&nextc);
X
X            /* erase the '^' */
X                if ((cc = gcharCurpos()) == NUL)
X                    outchar(' ');
X                else
X                    outstrn(transchar(cc));
X
X                insertchar(c);
X                continue;
X        }
X        switch (c)        /* handle character in insert mode */
X        {
X              case Ctrl('O'):        /* execute one command */
X                  count = 0;
X                restart_edit = TRUE;
X                /*FALLTHROUGH*/
X
X              case ESC: /* an escape ends input mode */
X        doESCkey:
X                if (!arrow_used)
X                {
X                    AppendToRedobuff(ESC_STR);
X
X                    if (--count > 0)        /* repeat what was typed */
X                    {
X                            start_redo_ins();
X                            continue;
X                    }
X                    stop_insert();
X                }
X                set_want_col = TRUE;
X
X                /*
X                 * The cursor should end up on the last inserted character.
X                 */
X                if (Curpos.col != 0 && (!restart_edit || gcharCurpos() == NUL))
X                    decCurpos();
X                State = NORMAL;
X                script_winsize_pp();    /* may need to put :winsize in script */
X                    /* inchar() may have deleted the "INSERT" message */
X                if (Recording)
X                    showmode();
X                else if (p_mo)
X                    msg("");
X                return;
X
X                  /*
X                 * Insert the previously inserted text.
X                 * Last_insert actually is a copy of the redo buffer, so we
X                 * first have to remove the command.
X                 * For ^@ the trailing ESC will end the insert.
X                 */
X              case K_ZERO:
X              case Ctrl('A'):
X                stuff_inserted(NUL, 1L, (c == Ctrl('A')));
X                break;
X
X                  /*
X                 * insert the contents of a register
X                 */
X              case Ctrl('B'):
X                  if (!insertbuf(vgetc()))
X                    beep();
X                break;
X
X                /*
X                 * If the cursor is on an indent, ^T/^D insert/delete one
X                 * shiftwidth. Otherwise ^T/^D behave like a TAB/backspace.
X                 * This isn't completely compatible with
X                 * vi, but the difference isn't very noticeable and now you can
X                 * mix ^D/backspace and ^T/TAB without thinking about which one
X                 * must be used.
X                 */
X              case Ctrl('T'):        /* make indent one shiftwidth greater */
X              case Ctrl('D'):         /* make indent one shiftwidth smaller */
X                stop_arrow();
X                AppendToRedobuff(mkstr(c));
X
X                    /* determine offset from first non-blank */
X                temp = Curpos.col;
X                beginline(TRUE);
X                temp -= Curpos.col;
X
X                  shift_line(c == Ctrl('D'));
X
X                    /* try to put cursor on same character */
X                temp += Curpos.col;
X                if (temp <= 0)
X                    Curpos.col = 0;
X                else
X                    Curpos.col = temp;
X                did_ai = FALSE;
X                did_si = FALSE;
X                can_si = FALSE;
X                  goto redraw;
X
X              case BS:
X              case DEL:
Xnextbs:
X                mode = 0;
Xdodel:
X                /* can't backup past first character in buffer */
X                /* can't backup past starting point unless "backspace" > 1 */
X                /* can backup to a previous line if "backspace" == 0 */
X                if ((Curpos.lnum == 1 && Curpos.col <= 0) ||
X                        (p_bs < 2 && (arrow_used ||
X                            (Curpos.lnum == Insstart.lnum &&
X                            Curpos.col <= Insstart.col) ||
X                            (Curpos.col <= 0 && p_bs == 0))))
X                {
X                    beep();
X                    goto redraw;
X                }
X
X                stop_arrow();
X                if (Curpos.col <= 0)        /* delete newline! */
X                {
X                    if (Curpos.lnum == Insstart.lnum)
X                    {
X                        if (!u_save((linenr_t)(Curpos.lnum - 2), (linenr_t)(Curpos.lnum + 1)))
X                            goto redraw;
X                        --Insstart.lnum;
X                        Insstart.col = 0;
X                    }
X                /* in replace mode with 'repdel' off we only move the cursor */
X                    if (State != REPLACE || p_rd)
X                    {
X                        temp = gcharCurpos();        /* remember current char */
X                        --Curpos.lnum;
X                        dojoin(FALSE);
X                        if (temp == NUL && gcharCurpos() != NUL)
X                            ++Curpos.col;
X                    }
X                    else
X                        decCurpos();
X                    did_ai = FALSE;
X                }
X                else
X                {
X                    /* delete upto starting point, start of line or previous word */
X                    do
X                    {
X                        decCurpos();
X                                /* start of word? */
X                        if (mode == 1 && !isspace(gcharCurpos()))
X                        {
X                            mode = 2;
X                            temp = isidchar(gcharCurpos());
X                        }
X                                /* end of word? */
X                        if (mode == 2 && isidchar(gcharCurpos()) != temp)
X                        {
X                            incCurpos();
X                            break;
X                        }
X                        if (State != REPLACE || p_rd)
X                            delchar(TRUE);
X                        if (mode == 0)        /* just a single backspace */
X                            break;
X                    } while (Curpos.col > 0 && (Curpos.lnum != Insstart.lnum ||
X                            Curpos.col != Insstart.col));
X                }
X                did_si = FALSE;
X                can_si = FALSE;
X                if (Curpos.col <= 1)
X                    did_ai = FALSE;
X                /*
X                 * It's a little strange to put backspaces into the redo
X                 * buffer, but it makes auto-indent a lot easier to deal
X                 * with.
X                 */
X                AppendToRedobuff(mkstr(c));
X                if (vpeekc() == BS)
X                {
X                        c = vgetc();
X                        goto nextbs;    /* speedup multiple backspaces */
X                }
Xredraw:
X                cursupdate();
X                updateline();
X                break;
X
X              case Ctrl('W'):
X                  /* delete word before cursor */
X                  mode = 1;
X                  goto dodel;
X
X              case Ctrl('U'):
X                mode = 3;
X                  goto dodel;
X
X              case K_LARROW:
X                  if (oneleft())
X                    start_arrow();
X                else
X                    beep();
X                break;
X
X              case K_SLARROW:
X                  if (Curpos.lnum > 1 || Curpos.col > 0)
X                {
X                    bck_word(1L, 0);
X                    start_arrow();
X                }
X                else
X                    beep();
X                break;
X
X              case K_RARROW:
X                if (gcharCurpos() != NUL)
X                {
X                    set_want_col = TRUE;
X                    start_arrow();
X                    ++Curpos.col;
X                }
X                else
X                    beep();
X                break;
X
X              case K_SRARROW:
X                  if (Curpos.lnum < line_count || gcharCurpos() != NUL)
X                {
X                    fwd_word(1L, 0);
X                    start_arrow();
X                }
X                else
X                    beep();
X                break;
X
X              case K_UARROW:
X                  if (oneup(1L))
X                    start_arrow();
X                else
X                    beep();
X                break;
X
X              case K_SUARROW:
X                  if (onepage(BACKWARD, 1L))
X                    start_arrow();
X                else
X                    beep();
X                break;
X
X              case K_DARROW:
X                  if (onedown(1L))
X                    start_arrow();
X                else
X                    beep();
X                break;
X
X              case K_SDARROW:
X                  if (onepage(FORWARD, 1L))
X                    start_arrow();
X                else
X                    beep();
X                break;
X
X              case TAB:
X                  if (!p_et)
X                    goto normalchar;
X                                        /* expand a tab into spaces */
X                stop_arrow();
X                did_ai = FALSE;
X                did_si = FALSE;
X                can_si = FALSE;
X                insstr("                " + 16 - (p_ts - Curpos.col % p_ts));
X                AppendToRedobuff("\t");
X                goto redraw;
X
X              case CR:
X              case NL:
X                stop_arrow();
X                if (State == REPLACE)           /* DMT added, 12/89 */
X                    delchar(FALSE);
X                AppendToRedobuff(NL_STR);
X                if (!Opencmd(FORWARD, TRUE))
X                    goto doESCkey;        /* out of memory */
X                break;
X
X#ifdef DIGRAPHS
X              case Ctrl('K'):
X                outchar('?');
X                AppendToRedobuff("\026");    /* CTRL-V */
X                setcursor();
X                  c = vgetc();
X                outstrn(transchar(c));
X                setcursor();
X                c = getdigraph(c, vgetc());
X                goto normalchar;
X#endif /* DIGRAPHS */
X
X              case Ctrl('R'):
X                /*
X                 * addition by mool: copy from previous line
X                 */
X                lnum = Curpos.lnum - 1;
X                goto copychar;
X
X              case Ctrl('E'):
X                lnum = Curpos.lnum + 1;
Xcopychar:
X                if (lnum < 1 || lnum > line_count)
X                {
X                    beep();
X                    break;
X                }
X
X                /* try to advance to the cursor column */
X                temp = 0;
X                ptr = (u_char *)nr2ptr(lnum);
X                while (temp < Cursvcol && *ptr)
X                        temp += chartabsize(*ptr++, temp);
X
X                if (temp > Cursvcol)
X                        --ptr;
X                if ((c = *ptr) == NUL)
X                {
X                    beep();
X                    break;
X                }
X
X                /*FALLTHROUGH*/
X              default:
Xnormalchar:
X                if (Curpos.col > 0 && ((can_si && c == '}') || (did_si && c == '{')))
X                    shift_line(TRUE);
X                insertchar(c);
X                break;
X            }
X    }
X}
X
X/*
X * Next character is interpreted literally.
X * A one, two or three digit decimal number is interpreted as its byte value.
X * If one or two digits are entered, *nextc is set to the next character.
X */
X    int
Xget_literal(nextc)
X    int *nextc;
X{
X    u_char         cc;
X    u_char         nc;
X    int             oldstate;
X    int             i;
X
X    oldstate = State;
X    State = NOMAPPING;        /* next characters not mapped */
X
X    cc = 0;
X    for (i = 0; i < 3; ++i)
X    {
X        nc = vgetc();
X        if (!isdigit(nc))
X            break;
X        cc = cc * 10 + nc - '0';
X        nc = 0;
X    }
X    if (i == 0)        /* no number entered */
X    {
X        cc = nc;
X        nc = 0;
X    }
X    else if (cc == 0)        /* NUL is stored as NL */
X        cc = '\n';
X
X    State = oldstate;
X    *nextc = nc;
X    return cc;
X}
X
X/*
X * Special characters in this context are those that need processing other
X * than the simple insertion that can be performed here. This includes ESC
X * which terminates the insert, and CR/NL which need special processing to
X * open up a new line. This routine tries to optimize insertions performed by
X * the "redo", "undo" or "put" commands, so it needs to know when it should
X * stop and defer processing to the "normal" mechanism.
X */
X#define ISSPECIAL(c)    ((c) < ' ' || (c) >= DEL)
X
X    void
Xinsertchar(c)
X    unsigned    c;
X{
X    int        must_redraw = FALSE;
X
X    stop_arrow();
X    /*
X     * If the cursor is past 'textwidth' and we are inserting a non-space,
X     * try to break the line in two or more pieces. If c == NUL then we have
X     * been called to do formatting only.
X     */
X    if (c == NUL || !isspace(c))
X    {
X        while (Cursvcol >= p_tw)
X        {
X            int        startcol;        /* Cursor column at entry */
X            int        wantcol;        /* column at textwidth border */
X            int        foundcol;        /* column for start of word */
X            int        mincol;            /* minimum column for break */
X
X            if ((startcol = Curpos.col) == 0)
X                break;
X            coladvance((int)p_tw);    /* find column of textwidth border */
X            wantcol = Curpos.col;
X            beginline((int)p_ai);            /* find start of text */
X            mincol = Curpos.col;
X
X            Curpos.col = startcol - 1;
X            foundcol = 0;
X            while (Curpos.col > mincol)    /* find position to break at */
X            {
X                if (isspace(gcharCurpos()))
X                {
X                    foundcol = Curpos.col + 1;
X                    while (Curpos.col > 1 && isspace(gcharCurpos()))
X                        --Curpos.col;
X                    if (Curpos.col < wantcol)
X                        break;
X                }
X                --Curpos.col;
X            }
X
X            if (foundcol == 0)    /* no spaces, cannot break line */
X            {
X                Curpos.col = startcol;
X                break;
X            }
X            Curpos.col = foundcol;
X            startcol -= Curpos.col;
X            Opencmd(FORWARD, FALSE);
X            Curpos.col += startcol;
X            curs_columns();            /* update Cursvcol */
X            must_redraw = TRUE;
X        }
X        if (c == NUL)        /* formatting only */
X            return;
X        if (must_redraw)
X            updateScreen(CURSUPD);
X    }
X
X    did_ai = FALSE;
X    did_si = FALSE;
X    can_si = FALSE;
X
X    /*
X     * If there's any pending input, grab up to MAX_COLUMNS at once.
X     * This speeds up normal text input considerably.
X     */
X    if (vpeekc() != NUL && State != REPLACE)
X    {
X        char            p[MAX_COLUMNS + 1];
X        int             i;
X
X        p[0] = c;
X        i = 1;
X        while ((c = vpeekc()) != NUL && !ISSPECIAL(c) && i < MAX_COLUMNS &&
X                    (Cursvcol += charsize(p[i - 1])) < p_tw)
X            p[i++] = vgetc();
X        p[i] = '\0';
X        insstr(p);
X        AppendToRedobuff(p);
X    }
X    else
X    {
X        inschar(c);
X        AppendToRedobuff(mkstr(c));
X    }
X
X    updateline();
X}
X
X
X/*
X * start_arrow() is called when an arrow key is used in insert mode.
X * It resembles hitting the <ESC> key.
X */
X    static void
Xstart_arrow()
X{
X    if (!arrow_used)        /* something has been inserted */
X    {
X        AppendToRedobuff(ESC_STR);
X        arrow_used = TRUE;        /* this means we stopped the current insert */
X        stop_insert();
X    }
X}
X
X/*
X * stop_arrow() is called before a change is made in insert mode.
X * If an arrow key has been used, start a new insertion.
X */
X    static void
Xstop_arrow()
X{
X    if (arrow_used)
X    {
X        u_saveCurpos();            /* errors are ignored! */
X        Insstart = Curpos;        /* new insertion starts here */
X        ResetBuffers();
X        AppendToRedobuff("1i");    /* pretend we start an insertion */
X        arrow_used = FALSE;
X    }
X}
X
X/*
X * do a few things to stop inserting
X */
X    static void
Xstop_insert()
X{
X    stop_redo_ins();
X
X    /*
X     * save the inserted text for later redo with ^@
X     */
X    free(last_insert);
X    last_insert = get_inserted();
X    last_insert_skip = new_insert_skip;
X
X    /*
X     * If we just did an auto-indent, truncate the line, and put
X     * the cursor back.
X     */
X    if (did_ai && !arrow_used)
X    {
X        *nr2ptr(Curpos.lnum) = NUL;
X        canincrease(0);
X        Curpos.col = 0;
X    }
X    did_ai = FALSE;
X    did_si = FALSE;
X    can_si = FALSE;
X}
X
X/*
X * oneright oneleft onedown oneup
X *
X * Move one char {right,left,down,up}.    Return TRUE when sucessful, FALSE when
X * we hit a boundary (of a line, or the file).
X */
X
X    int
Xoneright()
X{
X    char *ptr;
X
X    ptr = pos2ptr(&Curpos);
X    set_want_col = TRUE;
X
X    if (*ptr++ == NUL || *ptr == NUL)
X        return FALSE;
X    ++Curpos.col;
X    return TRUE;
X}
X
X    int
Xoneleft()
X{
X    set_want_col = TRUE;
X
X    if (Curpos.col == 0)
X        return FALSE;
X    --Curpos.col;
X    return TRUE;
X}
X
X    void
Xbeginline(flag)
X    int            flag;
X{
X    Curpos.col = 0;
X    if (flag)
X    {
X        register char *ptr;
X
X        for (ptr = nr2ptr(Curpos.lnum); isspace(*ptr); ++ptr)
X            ++Curpos.col;
X    }
X    set_want_col = TRUE;
X}
X
X    int
Xoneup(n)
X    long n;
X{
X    if (n != 0 && Curpos.lnum == 1)
X        return FALSE;
X    if (n >= Curpos.lnum)
X        Curpos.lnum = 1;
X    else
X        Curpos.lnum -= n;
X
X    if (operator == NOP)
X        cursupdate();                /* make sure Topline is valid */
X
X    /* try to advance to the column we want to be at */
X    coladvance(Curswant);
X    return TRUE;
X}
X
X    int
Xonedown(n)
X    long n;
X{
X    if (n != 0 && Curpos.lnum == line_count)
X        return FALSE;
X    Curpos.lnum += n;
X    if (Curpos.lnum > line_count)
X        Curpos.lnum = line_count;
X
X    if (operator == NOP)
X        cursupdate();                /* make sure Topline is valid */
X
X    /* try to advance to the column we want to be at */
X    coladvance(Curswant);
X    return TRUE;
X}
X
X    int
Xonepage(dir, count)
X    int        dir;
X    long    count;
X{
X    linenr_t        lp;
X    long            n;
X
X    if (line_count == 1)    /* nothing to do */
X        return FALSE;
X    for ( ; count > 0; --count)
X    {
X        if (dir == FORWARD ? (Topline >= line_count - 1) : (Topline == 1))
X        {
X            beep();
X            return FALSE;
X        }
X        lp = Topline;
X        n = 0;
X        if (dir == BACKWARD)
X        {
X            if (lp < line_count)
X                ++lp;
X            Curpos.lnum = lp;
X        }
X        while (n < Rows - 1 && lp >= 1 && lp <= line_count)
X        {
X            n += plines(lp);
X            lp += dir;
X        }
X        if (dir == FORWARD)
X        {
X            if (--lp > 1)
X                --lp;
X            Topline = Curpos.lnum = lp;
X        }
X        else
X            Topline = lp + 1;
X    }
X    beginline(TRUE);
X    updateScreen(VALID);
X    return TRUE;
X}
X
X    void
Xstuff_inserted(c, count, no_esc)
X    int        c;
X    long    count;
X    int        no_esc;
X{
X    u_char        *esc_ptr = NULL;
X    u_char        *ptr;
X
X    if (last_insert == NULL)
X    {
X        beep();
X        return;
X    }
X    if (c)
X        stuffReadbuff(mkstr(c));
X    if (no_esc && (esc_ptr = (u_char *)strrchr((char *)last_insert, 27)) != NULL)
X        *esc_ptr = NUL;        /* remove the ESC */
X
X            /* skip the command */
X    ptr = last_insert + last_insert_skip;
X
X    do
X        stuffReadbuff((char *)ptr);
X    while (--count > 0);
X
X    if (no_esc && esc_ptr)
X        *esc_ptr = 27;        /* put the ESC back */
X}
END_OF_FILE
if test 16324 -ne `wc -c <'vim/src/edit.c'`; then
    echo shar: \"'vim/src/edit.c'\" unpacked with wrong size!
fi
# end of 'vim/src/edit.c'
fi
if test -f 'vim/src/param.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'vim/src/param.c'\"
else
echo shar: Extracting \"'vim/src/param.c'\" \(16498 characters\)
sed "s/^X//" >'vim/src/param.c' <<'END_OF_FILE'
X/* vi:ts=4:sw=4
X *
X * VIM - Vi IMitation
X *
X * Code Contributions By:    Bram Moolenaar            [e-mail]
X *                            Tim Thompson            twitch!tjt
X *                            Tony Andrews            onecom!wldrdg!tony
X *                            G. R. (Fred) Walter        watmath!watcgl!grwalter
X */
X
X/*
X * Code to handle user-settable parameters. This is all pretty much table-
X * driven. To add a new parameter, put it in the params array, and add a
X * variable for it in param.h. If it's a numeric parameter, add any necessary
X * bounds checks to doset().
X */
X
X#include "vim.h"
X#include "globals.h"
X#include "proto.h"
X#include "param.h"
X
Xstruct param
X{
X    char        *fullname;        /* full parameter name */
X    char        *shortname;     /* permissible abbreviation */
X    int         flags;            /* see below */
X    char        *var;            /* pointer to variable */
X};
X
X/*
X * Flags
X */
X#define P_BOOL            0x01    /* the parameter is boolean */
X#define P_NUM            0x02    /* the parameter is numeric */
X#define P_STRING        0x04    /* the parameter is a string */
X#define P_CHANGED        0x08    /* the parameter has been changed */
X
X/*
X * The param structure is initialized here.
X * The order of the parameters should be alfabetic
X */
Xstruct param params[] =
X{
X        {"autoindent",    "ai",    P_BOOL,        (char *)&p_ai},
X/*        {"autoprint",    "ap",    P_BOOL,        (char *)&p_ap}, */
X        {"autowrite",    "aw",    P_BOOL,        (char *)&p_aw},
X        {"backspace",    "bs",    P_NUM,        (char *)&p_bs},
X        {"backup",        "bk",    P_BOOL,        (char *)&p_bk},
X#ifdef UNIX
X         {"backupdir",    "bdir",    P_STRING,    (char *)&p_bdir},
X#endif
X/*        {"beautify",    "bf",    P_BOOL,        (char *)&p_bf}, */
X        {"columns",        "co",    P_NUM,        (char *)&Columns},
X        {"compatible",    "cp",    P_BOOL,        (char *)&p_cp},
X#ifdef DIGRAPHS
X        {"digraph",        "dg",    P_BOOL,        (char *)&p_dg},
X#endif /* DIGRAPHS */
X         {"directory",    "dir",    P_STRING,    (char *)&p_dir},
X        {"equalprg",    "ep",      P_STRING,    (char *)&p_ep},
X        {"errorbells",    "eb",    P_BOOL,        (char *)&p_eb},
X        {"errorfile",    "ef",      P_STRING,    (char *)&p_ef},
X        {"expandtab",    "et",    P_BOOL,        (char *)&p_et},
X        {"graphic",        "gr",    P_BOOL,        (char *)&p_gr},
X/*        {"hardtabs",    "ht",    P_NUM,        (char *)&p_ht}, */
X        {"helpfile",    "hf",      P_STRING,    (char *)&p_hf},
X        {"history",     "hi",     P_NUM,        (char *)&p_hi},
X        {"ignorecase",    "ic",    P_BOOL,        (char *)&p_ic},
X        {"insertmode",    "im",    P_BOOL,        (char *)&p_im},
X        {"joinspaces",     "js",    P_BOOL,        (char *)&p_js},
X        {"keywordprg",    "kp",      P_STRING,    (char *)&p_kp},
X        {"lines",        NULL,     P_NUM,        (char *)&Rows},
X/*        {"lisp",        NULL,    P_BOOL        (char *)&p_lisp}, */
X        {"list",        NULL,    P_BOOL,        (char *)&p_list},
X        {"magic",        NULL,    P_BOOL,        (char *)&p_magic},
X        {"modelines",    "ml",    P_NUM,        (char *)&p_ml},
X        {"number",        "nu",    P_BOOL,        (char *)&p_nu},
X/*        {"open",        NULL,    P_BOOL,        (char *)&p_open}, */
X/*        {"optimize",    "opt",    P_BOOL,        (char *)&p_opt}, */
X        {"paragraphs",    "para",    P_STRING,    (char *)&p_para},
X/*        {"prompt",        NULL,    P_BOOL,        (char *)&p_prompt}, */
X        {"readonly",    "ro",    P_BOOL,        (char *)&p_ro},
X/*        {"redraw",        NULL,    P_BOOL,        (char *)&p_redraw}, */
X        {"remap",        NULL,    P_BOOL,        (char *)&p_remap},
X        {"repdel",        "rd",    P_BOOL,        (char *)&p_rd},
X        {"report",        NULL,    P_NUM,        (char *)&p_report},
X        {"ruler",        "ru",    P_BOOL,        (char *)&p_ru},
X        {"scroll",        NULL,     P_NUM,        (char *)&p_scroll},
X        {"scrolljump",    "sj",     P_NUM,        (char *)&p_sj},
X        {"sections",    NULL,    P_STRING,    (char *)&p_sections},
X        {"shell",        "sh",    P_STRING,    (char *)&p_sh},
X        {"shelltype",    "st",    P_NUM,        (char *)&p_st},
X        {"shiftround",    "sr",    P_BOOL,        (char *)&p_sr},
X        {"shiftwidth",    "sw",    P_NUM,        (char *)&p_sw},
X#ifndef MSDOS
X        {"shortname",    "sn",    P_BOOL,        (char *)&p_sn},
X#endif
X        {"showcmd",        "sc",    P_BOOL,        (char *)&p_sc},
X        {"showmatch",    "sm",    P_BOOL,        (char *)&p_sm},
X        {"showmode",    "mo",    P_BOOL,        (char *)&p_mo},
X/*        {"slowopen",    "slow",    P_BOOL,        (char *)&p_slow}, */
X        {"smartindent", "si",    P_BOOL,        (char *)&p_si},
X        {"suffixes",    "su",    P_STRING,    (char *)&p_su},
X        {"tabstop",     "ts",    P_NUM,        (char *)&p_ts},
X        {"taglength",    "tl",    P_NUM,        (char *)&p_tl},
X        {"tags",        NULL,    P_STRING,    (char *)&p_tags},
X        {"term",        NULL,    P_STRING,    (char *)&term_strings.t_name},
X        {"terse",        NULL,    P_BOOL,        (char *)&p_terse},
X#ifdef MSDOS
X        {"textmode",    "tx",    P_BOOL,        (char *)&p_tx},
X#endif
X        {"textwidth",    "tw",    P_NUM,        (char *)&p_tw},
X        {"tildeop",     "to",    P_BOOL,        (char *)&p_to},
X        {"timeout",     NULL,    P_BOOL,        (char *)&p_timeout},
X        {"ttimeout",     NULL,    P_BOOL,        (char *)&p_ttimeout},
X        {"undolevels",    "ul",    P_NUM,        (char *)&p_ul},
X        {"updatecount",    "uc",    P_NUM,        (char *)&p_uc},
X        {"updatetime",    "ut",    P_NUM,        (char *)&p_ut},
X        {"visualbell",    "vb",    P_BOOL,        (char *)&p_vb},
X        {"warn",        NULL,    P_BOOL,        (char *)&p_warn},
X/*        {"window",        NULL,     P_NUM,        (char *)&p_window}, */
X/*        {"w300",        NULL,     P_NUM,        (char *)&p_w300}, */
X/*        {"w1200",        NULL,     P_NUM,        (char *)&p_w1200}, */
X/*        {"w9600",        NULL,     P_NUM,        (char *)&p_w9600}, */
X        {"wrapscan",    "ws",    P_BOOL,        (char *)&p_ws},
X        {"wrapmargin",    "wm",    P_NUM,        (char *)&p_wm},
X        {"writeany",    "wa",    P_BOOL,        (char *)&p_wa},
X        {"writebackup",    "wb",    P_BOOL,        (char *)&p_wb},
X        {"yankendofline", "ye",    P_BOOL,        (char *)&p_ye},
X
X/* terminal output codes */
X        {"t_el",        NULL,    P_STRING,    (char *)&term_strings.t_el},
X        {"t_il",        NULL,    P_STRING,    (char *)&term_strings.t_il},
X        {"t_cil",        NULL,    P_STRING,    (char *)&term_strings.t_cil},
X        {"t_dl",        NULL,    P_STRING,    (char *)&term_strings.t_dl},
X        {"t_cdl",        NULL,    P_STRING,    (char *)&term_strings.t_cdl},
X        {"t_ed",        NULL,    P_STRING,    (char *)&term_strings.t_ed},
X        {"t_ci",        NULL,    P_STRING,    (char *)&term_strings.t_ci},
X        {"t_cv",        NULL,    P_STRING,    (char *)&term_strings.t_cv},
X        {"t_tp",        NULL,    P_STRING,    (char *)&term_strings.t_tp},
X        {"t_ti",        NULL,    P_STRING,    (char *)&term_strings.t_ti},
X        {"t_cm",        NULL,    P_STRING,    (char *)&term_strings.t_cm},
X        {"t_sr",        NULL,    P_STRING,    (char *)&term_strings.t_sr},
X        {"t_cri",        NULL,    P_STRING,    (char *)&term_strings.t_cri},
X        {"t_vb",        NULL,    P_STRING,    (char *)&term_strings.t_vb},
X        {"t_ks",        NULL,    P_STRING,    (char *)&term_strings.t_ks},
X        {"t_ke",        NULL,    P_STRING,    (char *)&term_strings.t_ke},
X        {"t_ts",        NULL,    P_STRING,    (char *)&term_strings.t_ts},
X        {"t_te",        NULL,    P_STRING,    (char *)&term_strings.t_te},
X
X/* terminal key codes */
X        {"t_ku",        NULL,    P_STRING,    (char *)&term_strings.t_ku},
X        {"t_kd",        NULL,    P_STRING,    (char *)&term_strings.t_kd},
X        {"t_kr",        NULL,    P_STRING,    (char *)&term_strings.t_kr},
X        {"t_kl",        NULL,    P_STRING,    (char *)&term_strings.t_kl},
X        {"t_sku",        NULL,    P_STRING,    (char *)&term_strings.t_sku},
X        {"t_skd",        NULL,    P_STRING,    (char *)&term_strings.t_skd},
X        {"t_skr",        NULL,    P_STRING,    (char *)&term_strings.t_skr},
X        {"t_skl",        NULL,    P_STRING,    (char *)&term_strings.t_skl},
X        {"t_f1",        NULL,    P_STRING,    (char *)&term_strings.t_f1},
X        {"t_f2",        NULL,    P_STRING,    (char *)&term_strings.t_f2},
X        {"t_f3",        NULL,    P_STRING,    (char *)&term_strings.t_f3},
X        {"t_f4",        NULL,    P_STRING,    (char *)&term_strings.t_f4},
X        {"t_f5",        NULL,    P_STRING,    (char *)&term_strings.t_f5},
X        {"t_f6",        NULL,    P_STRING,    (char *)&term_strings.t_f6},
X        {"t_f7",        NULL,    P_STRING,    (char *)&term_strings.t_f7},
X        {"t_f8",        NULL,    P_STRING,    (char *)&term_strings.t_f8},
X        {"t_f9",        NULL,    P_STRING,    (char *)&term_strings.t_f9},
X        {"t_f10",        NULL,    P_STRING,    (char *)&term_strings.t_f10},
X        {"t_sf1",        NULL,    P_STRING,    (char *)&term_strings.t_sf1},
X        {"t_sf2",        NULL,    P_STRING,    (char *)&term_strings.t_sf2},
X        {"t_sf3",        NULL,    P_STRING,    (char *)&term_strings.t_sf3},
X        {"t_sf4",        NULL,    P_STRING,    (char *)&term_strings.t_sf4},
X        {"t_sf5",        NULL,    P_STRING,    (char *)&term_strings.t_sf5},
X        {"t_sf6",        NULL,    P_STRING,    (char *)&term_strings.t_sf6},
X        {"t_sf7",        NULL,    P_STRING,    (char *)&term_strings.t_sf7},
X        {"t_sf8",        NULL,    P_STRING,    (char *)&term_strings.t_sf8},
X        {"t_sf9",        NULL,    P_STRING,    (char *)&term_strings.t_sf9},
X        {"t_sf10",        NULL,    P_STRING,    (char *)&term_strings.t_sf10},
X        {"t_help",        NULL,    P_STRING,    (char *)&term_strings.t_help},
X        {"t_undo",        NULL,    P_STRING,    (char *)&term_strings.t_undo},
X        {NULL, NULL, 0, NULL}            /* end marker */
X};
X
Xstatic void    showparams __ARGS((int));
Xstatic void showonep __ARGS((struct param *));
Xstatic int  istermparam __ARGS((struct param *));
X
X/*
X * Initialize the shell parameter and scroll size.
X */
X    void
Xset_init()
X{
X        char *p;
X
X        if ((p = (char *)vimgetenv("SHELL")) != NULL)
X            p_sh = strsave(p);
X        p_scroll = (Rows >> 1);
X}
X
X    void
Xdoset(arg)
X    char        *arg;    /* parameter string */
X{
X    register int i;
X    char        *s;
X    char        *errmsg;
X    char        *startarg;
X    int            prefix;    /* 0: nothing, 1: "no", 2: "inv" in front of name */
X    int         nextchar;
X    int         len = 0;
X    int         flags;
X    int            olduc = p_uc;    /* remember old update count */
X
X    if (*arg == NUL)
X    {
X        showparams(0);
X        return;
X    }
X
X    while (*arg)        /* loop to process all parameters */
X    {
X        errmsg = NULL;
X        startarg = arg;        /* remember for error message */
X        if (strncmp(arg, "all", (size_t)3) == 0)
X                showparams(1);
X        else if (strncmp(arg, "termcap", (size_t)7) == 0)
X                showparams(2);
X        else
X        {
X            prefix = 1;
X            if (strncmp(arg, "no", (size_t)2) == 0)
X            {
X                prefix = 0;
X                arg += 2;
X            }
X            else if (strncmp(arg, "inv", (size_t)3) == 0)
X            {
X                prefix = 2;
X                arg += 3;
X            }
X            for (i = 0; (s = params[i].fullname) != NULL; i++)
X            {
X                if (strncmp(arg, s, (size_t)(len = strlen(s))) == 0) /* match full name */
X                    break;
X            }
X            if (s == NULL)
X            {
X                for (i = 0; params[i].fullname != NULL; i++)
X                {
X                        s = params[i].shortname;
X                        if (s != NULL && strncmp(arg, s, (size_t)(len = strlen(s))) == 0) /* match short name */
X                            break;
X                        s = NULL;
X                }
X            }
X
X            if (s == NULL)        /* found a mismatch: skip the rest */
X            {
X                errmsg = "Unknown option:   ";    /* must be 18 chars */
X                goto skip;
X            }
X
X            flags = params[i].flags;
X            nextchar = arg[len];
X            /*
X             * allow '=' and ':' as MSDOS command.com allows only one
X             * '=' character per "set" command line. grrr. (jw)
X             */
X            if (nextchar == '?' ||
X                (prefix == 1 && nextchar != '=' &&
X                 nextchar != ':' && !(flags & P_BOOL)))
X            {                                        /* print value */
X                gotocmdline(TRUE, NUL);
X                showonep(¶ms[i]);
X            }
X            else if (nextchar != NUL && strchr("=: \t", nextchar) == NULL)
X            {
X                errmsg = e_setarg;
X                goto skip;
X            }
X            else if (flags & P_BOOL)                    /* boolean */
X            {
X                    if (nextchar == '=' || nextchar == ':')
X                    {
X                        errmsg = e_setarg;
X                        goto skip;
X                    }
X                    if (prefix == 2)
X                        *(int *)(params[i].var) ^= 1;    /* invert it */
X                    else
X                        *(int *)(params[i].var) = prefix;
X                    if ((int *)params[i].var == &p_cp && p_cp)    /* handle cp here */
X                    {
X                        p_bs = 0;        /* normal backspace */
X                        p_bk = 0;        /* no backup file */
X#ifdef DIGRAPHS
X                        p_dg = 0;        /* no digraphs */
X#endif /* DIGRAPHS */
X                        p_et = 0;        /* no expansion of tabs */
X                        p_hi = 0;        /* no history */
X                        p_im = 0;        /* do not start in insert mode */
X                        p_js = 1;        /* insert 2 spaces after period */
X                        p_ml = 0;        /* no modelines */
X                        p_rd = 1;        /* del replaces char */
X                        p_ru = 0;        /* no ruler */
X                        p_sj = 1;        /* no scrolljump */
X                        p_sr = 0;        /* do not round indent to shiftwidth */
X                        p_sc = 0;        /* no showcommand */
X                        p_mo = 0;        /* no showmode */
X                        p_si = 0;        /* no smartindent */
X                        p_tw = 9999;    /* maximum textwidth */
X                        p_to = 0;        /* no tilde operator */
X                        p_ttimeout = 0;    /* no terminal timeout */
X                        p_ul = 0;        /* no multilevel undo */
X                        p_uc = 0;        /* no autoscript file */
X                        p_wb = 0;        /* no backup file */
X                        p_ye = 0;        /* no yank to end of line */
X                    }
X            }
X            else                                /* numeric or string */
X            {
X                if ((nextchar != '=' && nextchar != ':') || prefix != 1)
X                {
X                    errmsg = e_setarg;
X                    goto skip;
X                }
X                if (flags & P_NUM)                /* numeric */
X                {
X                    len = atoi(arg + len + 1);
X                    if ((long *)params[i].var == &p_wm)    /* wrapmargin is translated into textlength */
X                    {
X                        if (len >= Columns)
X                            len = Columns - 1;
X                        p_tw = Columns - len;
X                    }
X                    *(long *)(params[i].var) = len;
X                }
X                else                            /* string */
X                {
X                    arg += len + 1;
X                    s = alloc((unsigned)(strlen(arg) + 1)); /* get a bit too much */
X                    if (s == NULL)
X                        break;
X                    if (flags & P_CHANGED)
X                        free(*(char **)(params[i].var));
X                    *(char **)(params[i].var) = s;
X                                /* copy the string */
X                    while (*arg && *arg != ' ' && *arg != '\t')
X                    {
X                        if (*arg == '\\' && *(arg + 1)) /* skip over escaped chars */
X                                ++arg;
X                        *s++ = *arg++;
X                    }
X                    *s = NUL;
X                    /*
X                     * options that need some action
X                     * to perform when changed (jw)
X                     */
X                    if (params[i].var == (char *)&term_strings.t_name)
X                        set_term(term_strings.t_name);
X                    else if (istermparam(¶ms[i]))
X                        ttest(FALSE);
X                }
X            }
X            params[i].flags |= P_CHANGED;
X        }
X
Xskip:
X        if (errmsg)
X        {
X            strcpy(IObuff, errmsg);
X            s = IObuff + 18;
X            while (*startarg && !isspace(*startarg))
X                *s++ = *startarg++;
X            *s = NUL;
X            emsg(IObuff);
X            arg = startarg;        /* skip to next argument */
X        }
X
X        skiptospace(&arg);                /* skip to next white space */
X        skipspace(&arg);                /* skip spaces */
X    }
X
X    /*
X     * Check the bounds for numeric parameters here
X     */
X    if (Rows < 2)
X    {
X        Rows = 2;
X        emsg("Need at least 2 lines");
X    }
X    if (p_ts <= 0 || p_ts > 16)
X    {
X        emsg(e_tabsize);
X        p_ts = 8;
X    }
X    if (p_scroll <= 0 || p_scroll > Rows)
X    {
X        emsg(e_scroll);
X        p_scroll = Rows >> 1;
X    }
X    if (p_report < 0)
X    {
X        emsg(e_positive);
X        p_report = 1;
X    }
X    if (p_sj < 0 || p_sj >= Rows)
X    {
X        emsg(e_scroll);
X        p_sj = 1;
X    }
X    if (p_ul < 0)
X    {
X        emsg(e_positive);
X        p_ul = 100;
X    }
X    if (p_uc < 0)
X    {
X        emsg(e_positive);
X        p_uc = 100;
X    }
X    if (p_uc == 0 && olduc != 0)        /* p_uc changed from on to off */
X        stopscript();
X    if (p_uc > 0 && olduc == 0)        /* p_uc changed from off to on */
X        startscript();
X#ifdef MSDOS
X    textfile(p_tx);
X#endif
X    if (p_ut < 0)
X    {
X        emsg(e_positive);
X        p_ut = 2000;
X    }
X
X    /*
X     * Update the screen in case we changed something like "tabstop" or
X     * "lines" or "list" that will change its appearance.
X     */
X    updateScreen(NOT_VALID);
X}
X
X/*
X * if 'all' == 0: show changed parameters
X * if 'all' == 1: show all normal parameters
X * if 'all' == 2: show all terminal parameters
X */
X    static void
Xshowparams(all)
X    int            all;
X{
X    struct param   *p;
X    int                col = 0;
X    int                inc;
X    int                isterm;
X
X    gotocmdline(TRUE, NUL);
X    outstrn("Parameters:\n");
X
X#ifdef AMIGA
X    settmode(0);                /* set cooked mode so output can be halted */
X#endif
X    for (p = ¶ms[0]; p->fullname != NULL; p++)
X    {
X        isterm = istermparam(p);
X        if ((all == 2 && isterm) ||
X            (all == 1 && !isterm) ||
X            (all == 0 && (p->flags & P_CHANGED)))
X        {
X            if ((p->flags & P_STRING) && *(char **)(p->var) != NULL)
X                inc = strlen(p->fullname) + strsize(*(char **)(p->var)) + 1;
X            else
X                inc = 1;
X            if (col + inc >= Columns)
X            {
X                outchar('\n');
X                col = 0;
X            }
X
X            showonep(p);
X            col += inc;
X            col += 19 - col % 19;
X            if (col < Columns - 19)
X                windgoto((int)Rows - 1, col); /* make columns */
X            else
X            {
X                col = 0;
X                outchar('\n');
X            }
X            flushbuf();
X        }
X    }
X
X    if (col)
X        outchar('\n');
X#ifdef AMIGA
X    settmode(1);
X#endif
X    wait_return(TRUE);
X}
X
X    static void
Xshowonep(p)
X        struct param *p;
X{
X    char            buf[64];
X
X    if ((p->flags & P_BOOL) && !*(int *)(p->var))
X        outstrn("no");
X    outstrn(p->fullname);
X    if (!(p->flags & P_BOOL))
X    {
X        outchar('=');
X        if (p->flags & P_NUM)
X        {
X            sprintf(buf, "%ld", *(long *)(p->var));
X            outstrn(buf);
X        }
X        else if (*(char **)(p->var) != NULL)
X            outtrans(*(char **)(p->var), -1);
X    }
X}
X
X/*
X * Write modified parameters as set command to a file.
X * Return 1 on error.
X */
X    int
Xmakeset(fd)
X    FILE *fd;
X{
X    struct param    *p;
X    char            *s;
X    int                e;
X
X    for (p = ¶ms[0]; p->fullname != NULL; p++)
X        if (p->flags & P_CHANGED)
X        {
X            if (p->flags & P_BOOL)
X                e = fprintf(fd, "set %s%s\n", *(int *)(p->var) ? "" : "no", p->fullname);
X            else if (p->flags & P_NUM)
X                e = fprintf(fd, "set %s=%ld\n", p->fullname, *(long *)(p->var));
X            else
X            {
X                fprintf(fd, "set %s=", p->fullname);
X                s = *(char **)(p->var);
X                if (s != NULL)
X                    for ( ; *s; ++s)
X                    {
X                        if (*s < ' ' || *s > '~')
X                            putc(Ctrl('V'), fd);
X                        putc(*s, fd);
X                    }
X                e = putc('\n', fd);
X            }
X            if (e < 0)
X                return 1;
X        }
X    return 0;
X}
X
X/*
X * Clear all the terminal parameters.
X * If the parameter has been changed, free the allocated memory.
X * Reset the "changed" flag, so the new value will not be freed.
X */
X    void
Xclear_termparam()
X{
X    struct param   *p;
X
X    for (p = ¶ms[0]; p->fullname != NULL; p++)
X        if (istermparam(p))
X        {
X            if (p->flags & P_CHANGED)
X                free(*(char **)(p->var));
X            *(char **)(p->var) = NULL;
X            p->flags &= ~P_CHANGED;
X        }
X}
X
X    static int
Xistermparam(p)
X    struct param *p;
X{
X    return (p->fullname[0] == 't' && p->fullname[1] == '_');
X}
END_OF_FILE
if test 16498 -ne `wc -c <'vim/src/param.c'`; then
    echo shar: \"'vim/src/param.c'\" unpacked with wrong size!
fi
# end of 'vim/src/param.c'
fi
if test -f 'vim/src/unix.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'vim/src/unix.c'\"
else
echo shar: Extracting \"'vim/src/unix.c'\" \(15625 characters\)
sed "s/^X//" >'vim/src/unix.c' <<'END_OF_FILE'
X/* vi:ts=4:sw=4
X *
X *
X * VIM - Vi IMitation
X *
X * Code Contributions By:    Bram Moolenaar            [e-mail]
X *                            Tim Thompson            twitch!tjt
X *                            Tony Andrews            onecom!wldrdg!tony
X *                            G. R. (Fred) Walter        watmath!watcgl!grwalter
X */
X/*
X * unix.c -- BSD and SYSV code
X *
X * A lot of this file was written by Juergen Weigert.
X */
X
X#include "vim.h"
X#include "globals.h"
X#include "param.h"
X#include "proto.h"
X
X#include <fcntl.h>
X#if !defined(pyr) && !defined(NOT_BOTH_TIME)
X# include <time.h>            /* on some systems time.h should not be
X                               included together with sys/time.h */
X#endif
X#include <sys/ioctl.h>
X#ifndef M_XENIX
X# include <sys/types.h>
X#endif
X#include <signal.h>
X
X#ifdef SYSV
X# ifdef M_XENIX
X#  include <sys/select.h>
X#  define bzero(a, b)    memset((a), 0, (b))
X# else
X#  include <poll.h>
X# endif
X# include <termio.h>
X#else    /* SYSV */
X# include <sys/time.h>
X# ifdef hpux
X#  include <termio.h>
X#  define SIGWINCH SIGWINDOW
X# else
X#  include <sgtty.h>
X# endif    /* hpux */
X#endif    /* SYSV */
X
X#if (defined(pyr) || defined(NO_FD_ZERO)) && defined(SYSV) && defined(FD_ZERO)
X# undef FD_ZERO
X#endif
X
X#ifdef ESIX
X# ifdef SIGWINCH
X#  undef SIGWINCH
X# endif
X# ifdef TIOCGWINSZ
X#  undef TIOCGWINSZ
X# endif
X#endif
X
Xstatic int    Read __ARGS((char *, long));
Xstatic int    WaitForChar __ARGS((int));
Xstatic int    RealWaitForChar __ARGS((int));
Xstatic void fill_inbuf __ARGS((void));
X#if defined(SIGWINCH) && !defined(linux)
Xstatic void sig_winch __ARGS((int, int, struct sigcontext *));
X#endif
X
Xstatic int do_resize = FALSE;
X
X/*
X * At this point TRUE and FALSE are defined as 1L and 0L, but we want 1 and 0.
X */
X#undef TRUE
X#define TRUE 1
X#undef FALSE
X#define FALSE 0
X
X/*
X * the number of calls to Write is reduced by using the buffer "outbuf"
X */
X#define BSIZE    2048
Xstatic u_char    outbuf[BSIZE];
Xstatic int        bpos = 0;
X
X/*
X * flushbuf(): flush the output buffer
X */
X    void
Xflushbuf()
X{
X    if (bpos != 0)
X        write(1, (char *)outbuf, (long)bpos);
X    bpos = 0;
X}
X
X/*
X * outchar(c): put a character into the output buffer. Flush it if it becomes full.
X */
X    void
Xoutchar(c)
X    unsigned c;
X{
X    if (c == '\n')        /* turn LF into CR-LF (CRMOD does not seem to do this) */
X        outchar('\r');
X    outbuf[bpos] = c;
X    ++bpos;
X    if (bpos >= BSIZE)
X        flushbuf();
X}
X
X/*
X * GetChars(): low level input funcion.
X * Get a characters from the keyboard.
X * If type == T_PEEK do not wait for characters.
X * If type == T_WAIT wait a short time for characters.
X * If type == T_BLOCK wait for characters.
X */
X    int
XGetChars(buf, maxlen, type)
X    char    *buf;
X    int        maxlen;
X    int        type;
X{
X    int        len;
X    int        time = 1000;    /* one second */
X
X    switch (type)
X    {
X    case T_PEEK:
X        time = 20;
X    case T_WAIT:
X        if (WaitForChar(time) == 0)        /* no character available */
X            return 0;
X        break;
X
X    case T_BLOCK:
X    /*
X     * If there is no character available within 2 seconds (default)
X     * write the autoscript file to disk
X     */
X        if (WaitForChar((int)p_ut) == 0)
X            updatescript(0);
X    }
X
X    for (;;)    /* repeat until we got a character */
X    {
X        /*
X         * we want to be interrupted by the winch signal
X         */
X        WaitForChar(-1);
X        if (do_resize)
X        {
X            debug("do_resize!\n");
X            set_winsize(0, 0, FALSE);
X            do_resize = FALSE;
X            continue;
X        }
X        len = Read(buf, (long)maxlen);
X        if (len > 0)
X            return len;
X    }
X}
X
X    void
Xvim_delay()
X{
X#if defined(SYSV) && !defined(M_XENIX)
X    poll(0, 0, 500);
X#else
X    struct timeval tv;
X
X    tv.tv_sec = 25 / 50;
X    tv.tv_usec = (25 % 50) * (1000000/50);
X    select(0, 0, 0, 0, &tv);
X#endif
X}
X
X    static void
Xsig_winch(sig, code, scp)
X    int        sig;
X    int        code;
X    struct sigcontext *scp;
X{
X#if defined(SIGWINCH) && (defined(SYSV) || defined(linux) || defined(hpux))
X    signal(SIGWINCH, sig_winch);
X#endif
X    do_resize = TRUE;
X}
X
X/*
X * If the machine has job control, use it to suspend the program,
X * otherwise fake it by starting a new shell.
X */
X    void
Xmch_suspend()
X{
X#ifdef SIGTSTP
X    settmode(0);
X    stoptermcap();
X    kill(0, SIGTSTP);        /* send ourselves a STOP signal */
X    settmode(1);
X    starttermcap();
X#else
X    outstr("new shell started\n");
X    stoptermcap();
X    call_shell(NULL, 0);
X    starttermcap();
X#endif
X}
X
X    void
Xmch_windinit()
X{
X    Columns = 80;
X    Rows = 24;
X
X    flushbuf();
X
X    mch_get_winsize();
X#if defined(SIGWINCH)
X    signal(SIGWINCH, sig_winch);
X#endif
X}
X
X/*
X * Check_win checks whether we have an interactive window.
X * If not, a new window is opened with the newcli command.
X * If we would open a window ourselves, the :sh and :! commands would not
X * work properly (Why? probably because we are then running in a background CLI).
X * This also is the best way to assure proper working in a next Workbench release.
X *
X * For the -e option (quickfix mode) we open our own window and disable :sh.
X * Otherwise we would never know when editing is finished.
X */
X#define BUF2SIZE 320        /* lenght of buffer for argument with complete path */
X
X    void
Xcheck_win(argc, argv)
X    int argc;
X    char **argv;
X{
X    if (!isatty(0) || !isatty(1))
X    {
X        fprintf(stderr, "VIM: no controlling terminal\n");
X        exit(2);
X    }
X}
X
X/*
X * fname_case(): Set the case of the filename, if it already exists.
X *                 This will cause the filename to remain exactly the same.
X */
X    void
Xfname_case(name)
X    char *name;
X{
X}
X
X    void
Xsettitle(str)
X    char *str;
X{
X}
X
X    void
Xresettitle()
X{
X}
X
X/*
X * get name of current directory into buffer 'buf' of length 'len' bytes
X */
X    int
Xdirname(buf, len)
X    char *buf;
X    int len;
X{
X#if defined(SYSV) || defined(hpux)
X    extern int        errno;
X    extern char        *sys_errlist[];
X
X    if (getcwd(buf,len) == NULL)
X    {
X        strcpy(buf, sys_errlist[errno]);
X        return 1;
X    }
X    return 0;
X#else
X    return (int)getwd(buf);
X#endif
X}
X
X/*
X * get absolute filename into buffer 'buf' of length 'len' bytes
X */
X    int
XFullName(fname, buf, len)
X    char *fname, *buf;
X    int len;
X{
X    *buf = 0;
X#if defined(linux) || defined(UNIX_WITHOUT_AMD)
X    {
X        int l;
X
X        if (*fname != '/')
X        {
X#if defined(SYSV) || defined(hpux)
X            (void)getcwd(buf,len);
X#else
X            (void)getwd(buf);
X#endif
X            l = strlen(buf);
X            if (l && buf[l-1] != '/')
X                strcat(buf, "/");
X        }
X    }
X#endif /* UNIX_WITHOUT_AMD */
X    strcat(buf, fname);
X    return 0;
X}
X
X/*
X * get file permissions for 'name'
X */
X    long
Xgetperm(name)
X    char *name;
X{
X    struct stat statb;
X
X    if (stat(name, &statb))
X        return -1;
X    return statb.st_mode;
X}
X
X/*
X * set file permission for 'name' to 'perm'
X */
X    int
Xsetperm(name, perm)
X    char *name;
X    int perm;
X{
X    return chmod(name, perm);
X}
X
X/*
X * check if "name" is a directory
X */
X    int
Xisdir(name)
X    char *name;
X{
X    struct stat statb;
X
X    if (stat(name, &statb))
X        return -1;
X    return (statb.st_mode & S_IFMT) != S_IFREG;
X}
X
X    void
Xmch_windexit(r)
X    int r;
X{
X    settmode(0);
X    stoptermcap();
X    flushbuf();
X    stopscript();                    /* remove autoscript file */
X    exit(r);
X}
X
X    void
Xmch_settmode(raw)
X    int                raw;
X{
X#if defined(ECHOE) && defined(ICANON)
X    /* for "new" tty systems */
X    static struct termio told;
X           struct termio tnew;
X
X    if (raw)
X    {
X        ioctl(0, TCGETA, &told);
X        tnew = told;
X        tnew.c_iflag &= ~ICRNL;            /* enables typing ^V^M */
X        tnew.c_iflag &= ~IXON;            /* enables typing ^Q */
X        tnew.c_lflag &= ~(ICANON | ECHO | ISIG | ECHOE);
X        tnew.c_cc[VMIN] = 1;            /* return after 1 char */
X        tnew.c_cc[VTIME] = 0;            /* don't wait */
X        ioctl(0, TCSETA, &tnew);
X    }
X    else
X        ioctl(0, TCSETA, &told);
X#else
X# ifndef TIOCSETN
X#  define TIOCSETN TIOCSETP        /* for hpux 9.0 */
X# endif
X    /* for "old" tty systems */
X    static struct sgttyb ttybold;
X           struct sgttyb ttybnew;
X
X    if (raw)
X    {
X        ioctl(0, TIOCGETP, &ttybold);
X        ttybnew = ttybold;
X        ttybnew.sg_flags &= ~(CRMOD | ECHO);
X        ttybnew.sg_flags |= RAW;
X        ioctl(0, TIOCSETN, &ttybnew);
X    }
X    else
X        ioctl(0, TIOCSETN, &ttybold);
X#endif
X}
X
X    int
Xmch_get_winsize()
X{
X    int                old_Rows = Rows;
X    int                old_Columns = Columns;
X    char            *p;
X
X    Columns = 0;
X    Rows = 0;
X
X/*
X * when called without a signal, get winsize from environment
X */
X    if (!do_resize)
X    {
X        if ((p = (char *)getenv("LINES")))
X            Rows = atoi(p);
X        if ((p = (char *)getenv("COLUMNS")))
X            Columns = atoi(p);
X        if (Columns <= 0 || Rows <= 0)
X            do_resize = TRUE;
X    }
X
X/*
X * when got a signal, or no size in environment, try using an ioctl
X */
X    if (do_resize)
X    {
X# ifdef TIOCGSIZE
X        struct ttysize    ts;
X
X        if (ioctl(0, TIOCGSIZE, &ts) == 0)
X        {
X            if (Columns == 0)
X                Columns = ts.ts_cols;
X            if (Rows == 0)
X                Rows = ts.ts_lines;
X        }
X# else /* TIOCGSIZE */
X#  ifdef TIOCGWINSZ
X        struct winsize    ws;
X
X        if (ioctl(0, TIOCGWINSZ, &ws) == 0)
X        {
X            if (Columns == 0)
X                Columns = ws.ws_col;
X            if (Rows == 0)
X                Rows = ws.ws_row;
X        }
X#  endif /* TIOCGWINSZ */
X# endif /* TIOCGSIZE */
X        do_resize = FALSE;
X    }
X
X#ifdef TERMCAP
X/*
X * if previous work fails, try reading the termcap
X */
X    if (Columns == 0 || Rows == 0)
X    {
X        extern void getlinecol();
X
X        getlinecol();    /* get "co" and "li" entries from termcap */
X    }
X#endif
X
X/*
X * If everything fails, use the old values
X */
X    if (Columns <= 0 || Rows <= 0)
X    {
X        Columns = old_Columns;
X        Rows = old_Rows;
X        return 1;
X    }
X    debug2("mch_get_winsize: %dx%d\n", (int)Columns, (int)Rows);
X
X    check_winsize();
X    script_winsize();
X
X/* if size changed: screenalloc will allocate new screen buffers */
X    return (0);
X}
X
X    void
Xmch_set_winsize()
X{
X    /* should try to set the window size to Rows and Columns */
X}
X
X    int
Xcall_shell(cmd, dummy)
X    char    *cmd;
X    int        dummy;
X{
X    int        x;
X    char    newcmd[1024];
X
X    flushbuf();
X
X    settmode(0);                 /* set to cooked mode */
X
X    if (cmd == NULL)
X        x = system(p_sh);
X    else
X    {            /* we use "sh" to start the shell, slow but easy */
X        sprintf(newcmd, "%s -c \"%s\"", p_sh, cmd);
X        x = system(newcmd);
X    }
X    if (x == 127)
X    {
X        smsg("Cannot execute shell sh");
X        outchar('\n');
X    }
X    else if (x)
X    {
X        smsg("%d returned", x);
X        outchar('\n');
X    }
X
X    settmode(1);                         /* set to raw mode */
X    return x;
X}
X
X/*
X * The input characters are buffered to be able to check for a CTRL-C.
X * This should be done with signals, but I don't know how to do that in
X * a portable way for a tty in RAW mode.
X */
X
X#define INBUFLEN 50
Xstatic char        inbuf[INBUFLEN];    /* internal typeahead buffer */
Xstatic int        inbufcount = 0;        /* number of chars in inbuf[] */
X
X    static int
XRead(buf, maxlen)
X    char    *buf;
X    long    maxlen;
X{
X    if (inbufcount == 0)        /* if the buffer is empty, fill it */
X        fill_inbuf();
X    if (maxlen > inbufcount)
X        maxlen = inbufcount;
X    memmove(buf, inbuf, maxlen);
X    inbufcount -= maxlen;
X    if (inbufcount)
X            memmove(inbuf, inbuf + maxlen, inbufcount);
X    return (int)maxlen;
X}
X
X    void
Xbreakcheck()
X{
X/*
X * check for CTRL-C typed by reading all available characters
X */
X    if (RealWaitForChar(0))        /* if characters available */
X        fill_inbuf();
X}
X
X    static void
Xfill_inbuf()
X{
X    int        len;
X
X    if (inbufcount >= INBUFLEN)        /* buffer full */
X        return;
X    len = read(0, inbuf + inbufcount, (long)(INBUFLEN - inbufcount));
X    if (len <= 0)    /* cannot read input??? */
X    {
X        fprintf(stderr, "Vim: Error reading input, exiting...\n");
X        exit(1);
X    }
X    while (len-- > 0)
X    {
X        /*
X         * if a CTRL-C was typed, remove it from the buffer and set got_int
X         */
X        if (inbuf[inbufcount] == 3)
X        {
X            /* remove everything typed before the CTRL-C */
X            memmove(inbuf, inbuf + inbufcount, len + 1);
X            inbufcount = 0;
X            got_int = TRUE;
X            flush_buffers();        /* remove all typeahead */
X        }
X        ++inbufcount;
X    }
X}
X
X/*
X * Wait "ticks" until a character is available from the keyboard or from inbuf[]
X * ticks = -1 will block forever
X */
X
X    static int
XWaitForChar(ticks)
X    int ticks;
X{
X    if (inbufcount)        /* something in inbuf[] */
X        return 1;
X    return RealWaitForChar(ticks);
X}
X
X/*
X * Wait "ticks" until a character is available from the keyboard
X * ticks = -1 will block forever
X */
X    static int
XRealWaitForChar(ticks)
X    int ticks;
X{
X#ifndef FD_ZERO
X    struct pollfd fds;
X
X    fds.fd = 0;
X    fds.events = POLLIN;
X    return (poll(&fds, 1, ticks));
X#else
X    struct timeval tv;
X    fd_set fdset;
X
X    if (ticks >= 0)
X    {
X           tv.tv_sec = ticks / 1000;
X        tv.tv_usec = (ticks % 1000) * (1000000/1000);
X    }
X
X    FD_ZERO(&fdset);
X    FD_SET(0, &fdset);
X    return (select(1, &fdset, NULL, NULL, (ticks >= 0) ? &tv : NULL));
X#endif
X}
X
X    int
Xremove(buf)
X#ifdef linux
X    const
X#endif
X            char *buf;
X{
X    return unlink(buf);
X}
X
X#ifdef WILD_CARDS
X/*
X * ExpandWildCard() - this code does wild-card pattern matching using the shell
X *
X * Mool: return 0 for success, 1 for error (you may loose some memory) and
X *       put an error message in *file.
X *
X * num_pat is number of input patterns
X * pat is array of pointers to input patterns
X * num_file is pointer to number of matched file names
X * file is pointer to array of pointers to matched file names
X * On Unix we do not check for files only yet
X * list_notfound is ignored
X */
X
Xextern char *mktemp __ARGS((char *));
X#ifndef SEEK_SET
X# define SEEK_SET 0
X#endif
X#ifndef SEEK_END
X# define SEEK_END 2
X#endif
X
X    int
XExpandWildCards(num_pat, pat, num_file, file, files_only, list_notfound)
X    int             num_pat;
X    char          **pat;
X    int            *num_file;
X    char         ***file;
X    int                files_only;
X    int                list_notfound;
X{
X    char    tmpname[TMPNAMELEN];
X    char    *command;
X    int        i;
X    size_t    len;
X    FILE    *fd;
X    char    *buffer;
X    char    *p;
X
X    *num_file = 0;        /* default: no files found */
X    *file = (char **)"";
X
X/*
X * get a name for the temp file
X */
X    strcpy(tmpname, TMPNAME2);
X    if (*mktemp(tmpname) == NUL)
X    {
X        emsg(e_notmp);
X        return 1;
X    }
X
X/*
X * let the shell expand the patterns and write the result into the temp file
X */
X    len = TMPNAMELEN + 10;
X    for (i = 0; i < num_pat; ++i)        /* count the length of the patterns */
X        len += strlen(pat[i]) + 3;
X    command = (char *)alloc(len);
X    if (command == NULL)
X        return 1;
X    strcpy(command, "echo > ");            /* built the shell command */
X    strcat(command, tmpname);
X    for (i = 0; i < num_pat; ++i)
X    {
X        strcat(command, " \"");
X        strcat(command, pat[i]);
X        strcat(command, "\"");
X    }
X    i = call_shell(command, 0);                /* execute it */
X    free(command);
X    if (i)                                    /* call_shell failed */
X    {
X        remove(tmpname);
X        sleep(1);            /* give the user a chance to read error messages */
X        updateScreen(CLEAR);            /* probably messed up screen */
X        return 1;
X    }
X
X/*
X * read the names from the file into memory
X */
X     fd = fopen(tmpname, "r");
X    if (fd == NULL)
X    {
X        emsg(e_notopen);
X        return 1;
X    }
X    fseek(fd, 0L, SEEK_END);
X    len = ftell(fd);                /* get size of temp file */
X    fseek(fd, 0L, SEEK_SET);
X    buffer = (char *)alloc(len + 1);
X    if (buffer == NULL)
X    {
X        remove(tmpname);
X        fclose(fd);
X        return 1;
X    }
X    i = fread(buffer, 1, len, fd);
X    fclose(fd);
X    remove(tmpname);
X    if (i != len)
X    {
X        emsg(e_notread);
X        free(buffer);
X        return 1;
X    }
X    buffer[len] = '\n';                /* make sure the buffers ends in NL */
X
X    p = buffer;
X    for (i = 0; *p != '\n'; ++i)        /* get number of entries */
X    {
X        while (*p != ' ' && *p != '\n')    /* skip entry */
X            ++p;
X        skipspace(&p);                    /* skip to next entry */
X    }
X    *num_file = i;
X    *file = (char **)alloc(sizeof(char *) * i);
X    if (*file == NULL)
X    {
X        free(buffer);
X        *file = (char **)"";
X        return 1;
X    }
X    p = buffer;
X    for (i = 0; i < *num_file; ++i)
X    {
X        (*file)[i] = p;
X        while (*p != ' ' && *p != '\n')
X            ++p;
X        if (*p == '\n')
X        {
X            *p = NUL;
X            break;
X        }
X        *p++ = NUL;
X        skipspace(&p);
X    }
X    return 0;
X}
X
X    void
XFreeWild(num, file)
X    int        num;
X    char    **file;
X{
X    if (file == NULL || num <= 0)
X        return;
X    free(file[0]);
X    free(file);
X}
X
X    int
Xhas_wildcard(p)
X    char *p;
X{
X    for ( ; *p; ++p)
X        if (strchr("*?[{`~$", *p) != NULL)
X            return 1;
X    return 0;
X}
X#endif    /* WILD_CARDS */
X
X#ifdef M_XENIX
X/*
X * Scaled-down version of rename, which is missing in Xenix.
X * This version can only move regular files and will fail if the
X * destination exists.
X */
X    int
Xrename(src, dst)
X    char *src, *dst;
X{
X    struct stat        st;
X
X    if (stat(dest, &st) >= 0)    /* fail if destination exists */
X        return -1;
X    if (link(src, dest) != 0)    /* link file to new name */
X        return -1;
X    if (unlink(src) == 0)        /* delete link to old name */
X        return 0;
X    return -1;
X}
X#endif /* M_XENIX */
END_OF_FILE
if test 15625 -ne `wc -c <'vim/src/unix.c'`; then
    echo shar: \"'vim/src/unix.c'\" unpacked with wrong size!
fi
# end of 'vim/src/unix.c'
fi
echo shar: End of archive 8 \(of 23\).
cp /dev/null ark8isdone
MISSING=""
for I in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have unpacked all 23 archives.
    rm -f ark[1-9]isdone ark[1-9][0-9]isdone
else
    echo You still need to unpack the following archives:
    echo "        " ${MISSING}
fi
##  End of shell archive.
exit 0
-------------8<----------------8<----------------8<---------------8<--------
Bram Moolenaar                             | DISCLAIMER:  This  note  does  not
Oce Nederland B.V., Research & Development | necessarily represent the position
p.o. box 101, 5900 MA  Venlo               | of  Oce-Nederland  B.V.  Therefore
The Netherlands        phone [phone] | no liability or responsibility for
UUCP: [e-mail]        fax [phone] | whatever will be accepted.

exit 0 # Just in case...