415 lines
9.7 KiB
C
415 lines
9.7 KiB
C
/*
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* $RCSId: xc/lib/fontconfig/fc-cache/fc-cache.c,v 1.8tsi Exp $
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*
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* Copyright © 2002 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <fontconfig/fontconfig.h>
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#include <../src/fccache.c>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <libgen.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#else
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#ifdef linux
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#define HAVE_GETOPT_LONG 1
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#endif
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#define HAVE_GETOPT 1
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#endif
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#ifndef HAVE_GETOPT
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#define HAVE_GETOPT 0
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#endif
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#ifndef HAVE_GETOPT_LONG
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#define HAVE_GETOPT_LONG 0
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#endif
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#if HAVE_GETOPT_LONG
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#undef _GNU_SOURCE
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#define _GNU_SOURCE
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#include <getopt.h>
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const struct option longopts[] = {
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{"version", 0, 0, 'V'},
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{"help", 0, 0, '?'},
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{NULL,0,0,0},
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};
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#else
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#if HAVE_GETOPT
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extern char *optarg;
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extern int optind, opterr, optopt;
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#endif
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#endif
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/*
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* POSIX has broken stdio so that getc must do thread-safe locking,
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* this is a serious performance problem for applications doing large
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* amounts of IO with getc (as is done here). If available, use
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* the getc_unlocked varient instead.
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*/
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#if defined(getc_unlocked) || defined(_IO_getc_unlocked)
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#define GETC(f) getc_unlocked(f)
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#define PUTC(c,f) putc_unlocked(c,f)
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#else
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#define GETC(f) getc(f)
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#define PUTC(c,f) putc(c,f)
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#endif
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FcBool
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FcCachePrintSet (FcFontSet *set, FcStrSet *dirs, char *base_name);
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static FcBool
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FcCacheWriteChars (FILE *f, const FcChar8 *chars)
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{
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FcChar8 c;
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while ((c = *chars++))
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{
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switch (c) {
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case '"':
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case '\\':
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if (PUTC ('\\', f) == EOF)
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return FcFalse;
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/* fall through */
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default:
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if (PUTC (c, f) == EOF)
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return FcFalse;
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}
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}
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return FcTrue;
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}
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static FcBool
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FcCacheWriteUlong (FILE *f, unsigned long t)
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{
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int pow;
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unsigned long temp, digit;
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temp = t;
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pow = 1;
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while (temp >= 10)
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{
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temp /= 10;
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pow *= 10;
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}
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temp = t;
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while (pow)
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{
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digit = temp / pow;
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if (PUTC ((char) digit + '0', f) == EOF)
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return FcFalse;
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temp = temp - pow * digit;
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pow = pow / 10;
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}
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return FcTrue;
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}
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static FcBool
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FcCacheWriteInt (FILE *f, int i)
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{
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return FcCacheWriteUlong (f, (unsigned long) i);
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}
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static FcBool
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FcCacheWriteStringOld (FILE *f, const FcChar8 *string)
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{
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if (PUTC ('"', f) == EOF)
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return FcFalse;
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if (!FcCacheWriteChars (f, string))
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return FcFalse;
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if (PUTC ('"', f) == EOF)
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return FcFalse;
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return FcTrue;
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}
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static void
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usage (char *program)
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{
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#if HAVE_GETOPT_LONG
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fprintf (stderr, "usage: %s [-V?] [--version] [--help] <fonts.cache-2>\n",
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program);
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#else
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fprintf (stderr, "usage: %s [-fsvV?] <fonts.cache-2>\n",
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program);
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#endif
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fprintf (stderr, "Reads font information caches in <fonts.cache-2>\n");
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fprintf (stderr, "\n");
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#if HAVE_GETOPT_LONG
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fprintf (stderr, " -V, --version display font config version and exit\n");
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fprintf (stderr, " -?, --help display this help and exit\n");
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#else
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fprintf (stderr, " -V (version) display font config version and exit\n");
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fprintf (stderr, " -? (help) display this help and exit\n");
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#endif
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exit (1);
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}
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static FcBool
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FcCacheGlobalFileReadAndPrint (FcFontSet * set, FcStrSet *dirs, char *cache_file)
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{
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char name_buf[8192];
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int fd;
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char * current_arch_machine_name;
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char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
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off_t current_arch_start = 0;
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if (!cache_file)
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goto bail;
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current_arch_machine_name = FcCacheMachineSignature();
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fd = open(cache_file, O_RDONLY);
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if (fd == -1)
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goto bail;
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current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
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if (current_arch_start < 0)
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goto bail1;
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lseek (fd, current_arch_start, SEEK_SET);
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if (FcCacheReadString (fd, candidate_arch_machine_name,
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sizeof (candidate_arch_machine_name)) == 0)
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goto bail1;
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while (1)
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{
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char * dir, * ls;
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FcCacheReadString (fd, name_buf, sizeof (name_buf));
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if (!strlen(name_buf))
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break;
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printf ("fc-cat: printing global cache contents for dir %s\n",
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name_buf);
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if (!FcDirCacheConsume (fd, name_buf, set))
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goto bail1;
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dir = strdup(name_buf);
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strcat (dir, "/");
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FcCachePrintSet (set, dirs, dir);
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free (dir);
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FcFontSetDestroy (set);
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set = FcFontSetCreate();
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}
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bail1:
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close (fd);
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bail:
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return FcFalse;
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}
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/* read serialized state from the cache file */
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static char *
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FcCacheFileRead (FcFontSet * set, FcStrSet *dirs, char *cache_file)
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{
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int fd;
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char * current_arch_machine_name;
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char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
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off_t current_arch_start = 0;
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char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
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static char name_buf[8192], *dir;
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FcChar8 * ls;
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if (!cache_file)
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goto bail;
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current_arch_machine_name = FcCacheMachineSignature();
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fd = open(cache_file, O_RDONLY);
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if (fd == -1)
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goto bail;
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FcCacheReadString (fd, name_buf, sizeof (name_buf));
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if (!strlen (name_buf))
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goto bail;
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if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) == 0)
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goto bail;
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printf ("fc-cat: printing directory cache for cache which would be named %s\n",
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name_buf);
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current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
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if (current_arch_start < 0)
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goto bail1;
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while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
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FcStrSetAdd (dirs, (FcChar8 *)subdirName);
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dir = strdup(name_buf);
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ls = FcStrLastSlash ((FcChar8 *)dir);
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if (ls)
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*ls = 0;
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if (!FcDirCacheConsume (fd, dir, set))
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goto bail2;
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free (dir);
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close(fd);
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return name_buf;
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bail2:
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free (dir);
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bail1:
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close (fd);
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bail:
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return 0;
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}
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/*
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* return the path from the directory containing 'cache' to 'file'
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*/
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static const FcChar8 *
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FcFileBaseName (const char *cache, const FcChar8 *file)
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{
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const FcChar8 *cache_slash;
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cache_slash = FcStrLastSlash ((const FcChar8 *)cache);
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if (cache_slash && !strncmp ((const char *) cache, (const char *) file,
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(cache_slash + 1) - (const FcChar8 *)cache))
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return file + ((cache_slash + 1) - (const FcChar8 *)cache);
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return file;
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}
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FcBool
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FcCachePrintSet (FcFontSet *set, FcStrSet *dirs, char *base_name)
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{
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FcPattern *font;
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FcChar8 *name, *dir;
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const FcChar8 *file, *base;
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int ret;
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int n;
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int id;
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FcStrList *list;
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list = FcStrListCreate (dirs);
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if (!list)
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goto bail2;
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while ((dir = FcStrListNext (list)))
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{
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base = FcFileBaseName (base_name, dir);
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if (!FcCacheWriteStringOld (stdout, base))
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goto bail3;
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if (PUTC (' ', stdout) == EOF)
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goto bail3;
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if (!FcCacheWriteInt (stdout, 0))
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goto bail3;
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if (PUTC (' ', stdout) == EOF)
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goto bail3;
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if (!FcCacheWriteStringOld (stdout, FC_FONT_FILE_DIR))
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goto bail3;
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if (PUTC ('\n', stdout) == EOF)
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goto bail3;
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}
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for (n = 0; n < set->nfont; n++)
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{
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font = set->fonts[n];
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if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
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goto bail3;
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base = FcFileBaseName (base_name, file);
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if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
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goto bail3;
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if (FcDebug () & FC_DBG_CACHEV)
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printf (" write file \"%s\"\n", base);
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if (!FcCacheWriteStringOld (stdout, base))
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goto bail3;
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if (PUTC (' ', stdout) == EOF)
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goto bail3;
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if (!FcCacheWriteInt (stdout, id))
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goto bail3;
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if (PUTC (' ', stdout) == EOF)
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goto bail3;
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name = FcNameUnparse (font);
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if (!name)
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goto bail3;
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ret = FcCacheWriteStringOld (stdout, name);
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FcStrFree (name);
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if (!ret)
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goto bail3;
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if (PUTC ('\n', stdout) == EOF)
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goto bail3;
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}
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FcStrListDone (list);
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return FcTrue;
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bail3:
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FcStrListDone (list);
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bail2:
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return FcFalse;
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}
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int
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main (int argc, char **argv)
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{
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int i;
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#if HAVE_GETOPT_LONG || HAVE_GETOPT
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int c;
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FcFontSet *fs = FcFontSetCreate();
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FcStrSet *dirs = FcStrSetCreate();
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char *name_buf;
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#if HAVE_GETOPT_LONG
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while ((c = getopt_long (argc, argv, "fsVv?", longopts, NULL)) != -1)
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#else
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while ((c = getopt (argc, argv, "fsVv?")) != -1)
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#endif
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{
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switch (c) {
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case 'V':
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fprintf (stderr, "fontconfig version %d.%d.%d\n",
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FC_MAJOR, FC_MINOR, FC_REVISION);
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exit (0);
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default:
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usage (argv[0]);
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}
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}
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i = optind;
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#else
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i = 1;
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#endif
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if (i >= argc)
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usage (argv[0]);
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if (name_buf = FcCacheFileRead (fs, dirs, argv[i]))
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FcCachePrintSet (fs, dirs, name_buf);
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else
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{
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FcStrSetDestroy (dirs);
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dirs = FcStrSetCreate ();
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if (FcCacheGlobalFileReadAndPrint (fs, dirs, argv[i]))
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;
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}
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FcStrSetDestroy (dirs);
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FcFontSetDestroy (fs);
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return 0;
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}
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