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- /* Copyright (C) 1989, 1992, 1993 Aladdin Enterprises. All rights reserved.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* gp_unix.c */
- /* Unix-specific routines for Ghostscript */
- #include "memory_.h"
- #include "string_.h"
- #include "gx.h"
- #include "gp.h"
- #include "stat_.h"
- #include "time_.h"
-
- /* Library routines not declared in a standard header */
- extern char *getenv(P1(const char *));
-
- /* popen isn't POSIX-standard, so we declare it here. */
- extern FILE *popen();
- extern int pclose();
-
- /* Do platform-dependent initialization. */
- void
- gp_init(void)
- {
- }
-
- /* Do platform-dependent cleanup. */
- void
- gp_exit(int exit_status, int code)
- {
- }
-
- /* ------ Date and time ------ */
-
- /* Read the current date (in days since Jan. 1, 1980) */
- /* and time (in milliseconds since midnight). */
- void
- gp_get_clock(long *pdt)
- { long secs_since_1980;
- struct timeval tp;
- struct timezone tzp;
- time_t tsec;
- struct tm *tm, *localtime();
-
- if ( gettimeofday(&tp, &tzp) == -1 )
- { lprintf("Ghostscript: gettimeofday failed!\n");
- gs_exit(1);
- }
-
- /* tp.tv_sec is #secs since Jan 1, 1970 */
-
- /* subtract off number of seconds in 10 years */
- /* leap seconds are not accounted for */
- secs_since_1980 = tp.tv_sec - (long)(60 * 60 * 24 * 365.25 * 10);
-
- /* adjust for timezone */
- secs_since_1980 -= (tzp.tz_minuteswest * 60);
-
- /* adjust for daylight savings time - assume dst offset is 1 hour */
- tsec = tp.tv_sec;
- tm = localtime(&tsec);
- if ( tm->tm_isdst )
- secs_since_1980 += (60 * 60);
-
- /* divide secs by #secs/day to get #days (integer division truncates) */
- pdt[0] = secs_since_1980 / (60 * 60 * 24);
- /* modulo + microsecs/1000 gives number of millisecs since midnight */
- pdt[1] = (secs_since_1980 % (60 * 60 * 24)) * 1000 + tp.tv_usec / 1000;
- #ifdef DEBUG_CLOCK
- printf("tp.tv_sec = %d tp.tv_usec = %d pdt[0] = %ld pdt[1] = %ld\n",
- tp.tv_sec, tp.tv_usec, pdt[0], pdt[1]);
- #endif
- }
-
- /* ------ Printer accessing ------ */
-
- /* Open a connection to a printer. A null file name means use the */
- /* standard printer connected to the machine, if any. */
- /* "|command" opens an output pipe. */
- /* Return NULL if the connection could not be opened. */
- FILE *
- gp_open_printer(char *fname, int binary_mode)
- { return
- (strlen(fname) == 0 ?
- gp_open_scratch_file(gp_scratch_file_name_prefix, fname, "w") :
- fname[0] == '|' ?
- popen(fname + 1, "w") :
- fopen(fname, "w"));
- }
-
- /* Close the connection to the printer. */
- void
- gp_close_printer(FILE *pfile, const char *fname)
- { if ( fname[0] == '|' )
- pclose(pfile);
- else
- fclose(pfile);
- }
-
- /* ------ File names ------ */
-
- /* Define the character used for separating file names in a list. */
- const char gp_file_name_list_separator = ':';
-
- /* Define the default scratch file name prefix. */
- const char gp_scratch_file_name_prefix[] = "gs_";
-
- /* Define the string to be concatenated with the file mode */
- /* for opening files without end-of-line conversion. */
- const char gp_fmode_binary_suffix[] = "";
- /* Define the file modes for binary reading or writing. */
- const char gp_fmode_rb[] = "r";
- const char gp_fmode_wb[] = "w";
-
- /* Create and open a scratch file with a given name prefix. */
- /* Write the actual file name at fname. */
- FILE *
- gp_open_scratch_file(const char *prefix, char *fname, const char *mode)
- { char *temp;
- if ( (temp = getenv("TEMP")) == NULL )
- strcpy(fname, "/tmp/");
- else
- strcpy(fname, temp);
- strcat(fname, prefix);
- /* Prevent trailing X's in path from being converted by mktemp. */
- if ( *fname != 0 && fname[strlen(fname) - 1] == 'X' )
- strcat(fname, "-");
- strcat(fname, "XXXXXX");
- mktemp(fname);
- return fopen(fname, mode);
- }
-
- /* Answer whether a file name contains a directory/device specification, */
- /* i.e. is absolute (not directory- or device-relative). */
- int
- gp_file_name_is_absolute(const char *fname, uint len)
- { /* A file name is absolute if it starts with a /. */
- return ( len >= 1 && *fname == '/' );
- }
-
- /* Answer the string to be used for combining a directory/device prefix */
- /* with a base file name. The file name is known to not be absolute. */
- const char *
- gp_file_name_concat_string(const char *prefix, uint plen,
- const char *fname, uint len)
- { if ( plen > 0 && prefix[plen - 1] == '/' )
- return "";
- return "/";
- }
-
- /* ------ File operations ------ */
-
- /* If the file given by fname exists, fill in its status and return 1; */
- /* otherwise return 0. */
- int
- gp_file_status(const char *fname, file_status *pstatus)
- { struct stat sbuf;
- /* The RS/6000 prototype for stat doesn't include const, */
- /* so we have to explicitly remove the const modifier. */
- if ( stat((char *)fname, &sbuf) < 0 ) return 0;
- pstatus->size_pages = stat_blocks(&sbuf); /* st_blocks is */
- /* missing on some systems, */
- /* see stat_.h */
- pstatus->size_bytes = sbuf.st_size;
- pstatus->time_referenced = sbuf.st_mtime;
- pstatus->time_created = sbuf.st_ctime;
- return 1;
- }
-
- /* ------ File enumeration ------ */
-
- /****** THIS IS NOT SUPPORTED ON UNIX SYSTEMS. ******/
- /* Amazingly enough, there is no standard Unix library routine */
- /* for enumerating the files matching a pattern, */
- /* or even for enumerating (conveniently) the files in a directory. */
-
- struct file_enum_s {
- char *pattern;
- int first_time;
- const gs_memory_procs *mprocs;
- };
-
- /* Initialize an enumeration. NEEDS WORK ON HANDLING * ? \. */
- file_enum *
- gp_enumerate_files_init(const char *pat, uint patlen,
- const gs_memory_procs *mprocs)
- { file_enum *pfen = (file_enum *)(*mprocs->alloc)(1, sizeof(file_enum), "gp_enumerate_files");
- char *pattern;
- if ( pfen == 0 ) return 0;
- pattern = (*mprocs->alloc)(patlen + 1, 1,
- "gp_enumerate_files(pattern)");
- if ( pattern == 0 ) return 0;
- memcpy(pattern, pat, patlen);
- pattern[patlen] = 0;
- pfen->pattern = pattern;
- pfen->mprocs = mprocs;
- pfen->first_time = 1;
- return pfen;
- }
-
- /* Enumerate the next file. */
- /* PUNT: JUST RETURN THE PATTERN. */
- uint
- gp_enumerate_files_next(file_enum *pfen, char *ptr, uint maxlen)
- { if ( pfen->first_time )
- { char *pattern = pfen->pattern;
- uint len = strlen(pattern);
- pfen->first_time = 0;
- if ( len > maxlen )
- return maxlen + 1;
- strcpy(ptr, pattern);
- return len;
- }
- return -1;
- }
-
- /* Clean up the file enumeration. */
- void
- gp_enumerate_files_close(file_enum *pfen)
- { const gs_memory_procs *mprocs = pfen->mprocs;
- (*mprocs->free)(pfen->pattern, strlen(pfen->pattern) + 1, 1,
- "gp_enumerate_files_close(pattern)");
- (*mprocs->free)((char *)pfen, 1, sizeof(file_enum),
- "gp_enumerate_files_close");
- }
-