/*
- * $XFree86: xc/lib/fontconfig/src/fccache.c,v 1.7 2002/05/21 17:06:22 keithp Exp $
+ * $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $
*
- * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ * Copyright © 2000 Keith Packard
+ * Copyright © 2005 Patrick Lam
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* PERFORMANCE OF THIS SOFTWARE.
*/
+#include <fcntl.h>
+#include <dirent.h>
+#include <sys/mman.h>
+#include <sys/utsname.h>
+#include <sys/types.h>
+#include <unistd.h>
#include "fcint.h"
+#define ENDIAN_TEST 0x12345678
+#define MACHINE_SIGNATURE_SIZE 9 + 5*19 + 1
+
+static off_t
+FcCacheSkipToArch (int fd, const char * arch);
+
+static FcBool
+FcCacheCopyOld (int fd, int fd_orig, off_t start);
+
+static void *
+FcDirCacheProduce (FcFontSet *set, FcCache * metadata);
+
+static FcBool
+FcDirCacheConsume (int fd, FcFontSet *set);
+
+FcBool
+FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir);
+
+static int
+FcCacheNextOffset(off_t w);
+
+static char *
+FcCacheMachineSignature (void);
+
+static FcBool
+FcCacheHaveBank (int bank);
+
#define FC_DBG_CACHE_REF 1024
-static FcChar8 *
-FcCacheReadString (FILE *f, FcChar8 *dest, int len)
+static char *
+FcCacheReadString (int fd, char *dest, int len)
{
- int c;
+ FcChar8 c;
FcBool escape;
- FcChar8 *d;
int size;
int i;
- while ((c = getc (f)) != EOF)
- if (c == '"')
- break;
- if (c == EOF)
- return FcFalse;
if (len == 0)
- return FcFalse;
+ return 0;
size = len;
i = 0;
- d = dest;
escape = FcFalse;
- while ((c = getc (f)) != EOF)
+ while (read (fd, &c, 1) == 1)
{
if (!escape)
{
}
if (i == size)
{
- FcChar8 *new = malloc (size * 2);
- if (!new)
- break;
- memcpy (new, d, size);
- size *= 2;
- if (d != dest)
- free (d);
- d = new;
+ dest[i++] = 0;
+ return dest;
}
- d[i++] = c;
+ dest[i++] = c;
if (c == '\0')
- return d;
+ return dest;
escape = FcFalse;
}
- if (d != dest)
- free (d);
return 0;
}
static FcBool
-FcCacheReadUlong (FILE *f, unsigned long *dest)
+FcCacheWriteString (int fd, const char *chars)
{
- unsigned long t;
- int c;
-
- while ((c = getc (f)) != EOF)
- {
- if (!isspace (c))
- break;
- }
- if (c == EOF)
+ if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
return FcFalse;
- t = 0;
- for (;;)
- {
- if (c == EOF || isspace (c))
- break;
- if (!isdigit (c))
- return FcFalse;
- t = t * 10 + (c - '0');
- c = getc (f);
- }
- *dest = t;
return FcTrue;
}
-static FcBool
-FcCacheReadInt (FILE *f, int *dest)
+static void
+FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
{
- unsigned long t;
- FcBool ret;
-
- ret = FcCacheReadUlong (f, &t);
- if (ret)
- *dest = (int) t;
- return ret;
+ FcMemFree (FC_MEM_STRING, strlen (d->name)+1);
+ free (d->name);
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir));
+ free (d);
}
-static FcBool
-FcCacheReadTime (FILE *f, time_t *dest)
+FcGlobalCache *
+FcGlobalCacheCreate (void)
{
- unsigned long t;
- FcBool ret;
+ FcGlobalCache *cache;
- ret = FcCacheReadUlong (f, &t);
- if (ret)
- *dest = (time_t) t;
- return ret;
+ cache = malloc (sizeof (FcGlobalCache));
+ if (!cache)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
+ cache->dirs = 0;
+ cache->updated = FcFalse;
+ cache->fd = -1;
+ return cache;
}
-static FcBool
-FcCacheWriteChars (FILE *f, const FcChar8 *chars)
+void
+FcGlobalCacheDestroy (FcGlobalCache *cache)
{
- FcChar8 c;
- while ((c = *chars++))
+ FcGlobalCacheDir *d, *next;
+
+ for (d = cache->dirs; d; d = next)
{
- switch (c) {
- case '"':
- case '\\':
- if (putc ('\\', f) == EOF)
- return FcFalse;
- /* fall through */
- default:
- if (putc (c, f) == EOF)
- return FcFalse;
- }
+ next = d->next;
+ FcGlobalCacheDirDestroy (d);
}
- return FcTrue;
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
+ free (cache);
}
-static FcBool
-FcCacheWriteString (FILE *f, const FcChar8 *string)
+void
+FcGlobalCacheLoad (FcGlobalCache *cache,
+ FcStrSet *staleDirs,
+ const FcChar8 *cache_file)
{
+ char name_buf[8192];
+ FcGlobalCacheDir *d, *next;
+ char * current_arch_machine_name;
+ char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
+ off_t current_arch_start;
- if (putc ('"', f) == EOF)
- return FcFalse;
- if (!FcCacheWriteChars (f, string))
- return FcFalse;
- if (putc ('"', f) == EOF)
- return FcFalse;
- return FcTrue;
-}
+ struct stat cache_stat, dir_stat;
-static FcBool
-FcCacheWritePath (FILE *f, const FcChar8 *dir, const FcChar8 *file)
-{
- if (putc ('"', f) == EOF)
- return FcFalse;
- if (dir)
- if (!FcCacheWriteChars (f, dir))
- return FcFalse;
- if (dir && dir[strlen((const char *) dir) - 1] != '/')
- if (putc ('/', f) == EOF)
- return FcFalse;
- if (!FcCacheWriteChars (f, file))
- return FcFalse;
- if (putc ('"', f) == EOF)
- return FcFalse;
- return FcTrue;
-}
+ if (stat ((char *) cache_file, &cache_stat) < 0)
+ return;
-static FcBool
-FcCacheWriteUlong (FILE *f, unsigned long t)
-{
- int pow;
- unsigned long temp, digit;
+ cache->fd = open ((char *) cache_file, O_RDONLY);
+ if (cache->fd == -1)
+ return;
+
+ cache->updated = FcFalse;
- temp = t;
- pow = 1;
- while (temp >= 10)
+ current_arch_machine_name = FcCacheMachineSignature ();
+ current_arch_start = FcCacheSkipToArch(cache->fd,
+ current_arch_machine_name);
+ if (current_arch_start < 0)
+ goto bail0;
+
+ lseek (cache->fd, current_arch_start, SEEK_SET);
+ FcCacheReadString (cache->fd, candidate_arch_machine_name,
+ sizeof (candidate_arch_machine_name));
+ if (strlen(candidate_arch_machine_name) == 0)
+ goto bail0;
+
+ while (1)
{
- temp /= 10;
- pow *= 10;
+ off_t targ;
+
+ FcCacheReadString (cache->fd, name_buf, sizeof (name_buf));
+ if (!strlen(name_buf))
+ break;
+
+ if (stat ((char *) name_buf, &dir_stat) < 0 ||
+ dir_stat.st_mtime > cache_stat.st_mtime)
+ {
+ FcCache md;
+
+ FcStrSetAdd (staleDirs, FcStrCopy ((FcChar8 *)name_buf));
+ read (cache->fd, &md, sizeof (FcCache));
+ lseek (cache->fd, FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count, SEEK_SET);
+ continue;
+ }
+
+ d = malloc (sizeof (FcGlobalCacheDir));
+ if (!d)
+ goto bail1;
+
+ d->next = cache->dirs;
+ cache->dirs = d;
+
+ d->name = (char *)FcStrCopy ((FcChar8 *)name_buf);
+ d->ent = 0;
+ d->offset = lseek (cache->fd, 0, SEEK_CUR);
+ if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache))
+ goto bail1;
+ targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count;
+ if (lseek (cache->fd, targ, SEEK_SET) != targ)
+ goto bail1;
}
- temp = t;
- while (pow)
+ return;
+
+ bail1:
+ for (d = cache->dirs; d; d = next)
{
- digit = temp / pow;
- if (putc ((char) digit + '0', f) == EOF)
- return FcFalse;
- temp = temp - pow * digit;
- pow = pow / 10;
+ next = d->next;
+ free (d);
}
- return FcTrue;
+ cache->dirs = 0;
+ bail0:
+ close (cache->fd);
+ cache->fd = -1;
+ return;
}
-static FcBool
-FcCacheWriteInt (FILE *f, int i)
+FcBool
+FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config)
{
- return FcCacheWriteUlong (f, (unsigned long) i);
-}
+ FcGlobalCacheDir *d;
+ FcBool ret = FcFalse;
-static FcBool
-FcCacheWriteTime (FILE *f, time_t t)
-{
- return FcCacheWriteUlong (f, (unsigned long) t);
-}
+ if (cache->fd == -1)
+ return FcFalse;
-static FcBool
-FcCacheFontSetAdd (FcFontSet *set,
- FcStrSet *dirs,
- const FcChar8 *dir,
- int dir_len,
- const FcChar8 *file,
- const FcChar8 *name)
-{
- FcChar8 path_buf[8192], *path;
- int len;
- FcBool ret = FcFalse;
- FcPattern *font;
-
- path = path_buf;
- len = (dir_len + 1 + strlen ((const char *) file) + 1);
- if (len > sizeof (path_buf))
- {
- path = malloc (len);
- if (!path)
- return FcFalse;
- }
- strncpy ((char *) path, (const char *) dir, dir_len);
- if (dir[dir_len - 1] != '/')
- path[dir_len++] = '/';
- strcpy ((char *) path + dir_len, (const char *) file);
- if (!FcStrCmp (name, FC_FONT_FILE_DIR))
- {
- if (FcDebug () & FC_DBG_CACHEV)
- printf (" dir cache dir \"%s\"\n", path);
- ret = FcStrSetAdd (dirs, path);
- }
- else if (!FcStrCmp (name, FC_FONT_FILE_INVALID))
- {
- ret = FcTrue;
- }
- else
+ for (d = cache->dirs; d; d = d->next)
{
- font = FcNameParse (name);
- if (font)
+ if (strncmp (d->name, dir, strlen(dir)) == 0)
{
- if (FcDebug () & FC_DBG_CACHEV)
- printf (" dir cache file \"%s\"\n", file);
- ret = (FcPatternAddString (font, FC_FILE, path) &&
- FcFontSetAdd (set, font));
- if (!ret)
- FcPatternDestroy (font);
+ lseek (cache->fd, d->offset, SEEK_SET);
+ if (!FcDirCacheConsume (cache->fd, set))
+ return FcFalse;
+ if (strcmp (d->name, dir) == 0)
+ ret = FcTrue;
}
}
- if (path != path_buf) free (path);
- return ret;
-
-}
-static unsigned int
-FcCacheHash (const FcChar8 *string)
-{
- unsigned int h = 0;
- FcChar8 c;
-
- while ((c = *string++))
- h = (h << 1) ^ c;
- return 0;
+ return ret;
}
-/*
- * Verify the saved timestamp for a file
- */
FcBool
-FcGlobalCacheCheckTime (FcGlobalCacheInfo *info)
+FcGlobalCacheUpdate (FcGlobalCache *cache,
+ const char *name,
+ FcFontSet *set)
{
- struct stat statb;
+ FcGlobalCacheDir * d;
- if (stat ((char *) info->file, &statb) < 0)
+ if (!set->nfont)
+ return FcTrue;
+
+ for (d = cache->dirs; d; d = d->next)
{
- if (FcDebug () & FC_DBG_CACHE)
- printf (" file missing\n");
- return FcFalse;
+ if (strcmp(d->name, name) == 0)
+ break;
}
- if (statb.st_mtime != info->time)
+
+ if (!d)
{
- if (FcDebug () & FC_DBG_CACHE)
- printf (" timestamp mismatch (was %d is %d)\n",
- (int) info->time, (int) statb.st_mtime);
- return FcFalse;
+ d = malloc (sizeof (FcGlobalCacheDir));
+ if (!d)
+ return FcFalse;
+ d->next = cache->dirs;
+ cache->dirs = d;
}
+
+ cache->updated = FcTrue;
+
+ d->name = (char *)FcStrCopy ((FcChar8 *)name);
+ d->ent = FcDirCacheProduce (set, &d->metadata);
+ d->offset = 0;
return FcTrue;
}
-void
-FcGlobalCacheReferenced (FcGlobalCache *cache,
- FcGlobalCacheInfo *info)
+FcBool
+FcGlobalCacheSave (FcGlobalCache *cache,
+ const FcChar8 *cache_file)
{
- if (!info->referenced)
- {
- info->referenced = FcTrue;
- cache->referenced++;
- if (FcDebug () & FC_DBG_CACHE_REF)
- printf ("Reference %d %s\n", cache->referenced, info->file);
- }
-}
+ int fd, fd_orig;
+ FcGlobalCacheDir *dir;
+ FcAtomic *atomic;
+ off_t current_arch_start = 0, truncate_to;
+ char * current_arch_machine_name, * header;
-/*
- * Break a path into dir/base elements and compute the base hash
- * and the dir length. This is shared between the functions
- * which walk the file caches
- */
+ if (!cache->updated)
+ return FcTrue;
+
+#if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
+ /* Set-UID programs can't safely update the cache */
+ if (getuid () != geteuid ())
+ return FcFalse;
+#endif
+
+ atomic = FcAtomicCreate (cache_file);
+ if (!atomic)
+ return FcFalse;
-typedef struct _FcFilePathInfo {
- const FcChar8 *dir;
- int dir_len;
- const FcChar8 *base;
- unsigned int base_hash;
-} FcFilePathInfo;
+ if (!FcAtomicLock (atomic))
+ goto bail1;
+ fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT,
+ S_IRUSR | S_IWUSR);
+ if (fd == -1)
+ goto bail2;
-static FcFilePathInfo
-FcFilePathInfoGet (const FcChar8 *path)
-{
- FcFilePathInfo i;
- FcChar8 *slash;
+ fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY);
- slash = (FcChar8 *) strrchr ((const char *) path, '/');
- if (slash)
- {
- i.dir = path;
- i.dir_len = slash - path;
- if (!i.dir_len)
- i.dir_len = 1;
- i.base = slash + 1;
- }
+ current_arch_machine_name = FcCacheMachineSignature ();
+ if (fd_orig == -1)
+ current_arch_start = 0;
else
- {
- i.dir = (const FcChar8 *) ".";
- i.dir_len = 1;
- i.base = path;
- }
- i.base_hash = FcCacheHash (i.base);
- return i;
-}
+ current_arch_start = FcCacheSkipToArch (fd_orig,
+ current_arch_machine_name);
-FcGlobalCacheDir *
-FcGlobalCacheDirGet (FcGlobalCache *cache,
- const FcChar8 *dir,
- int len,
- FcBool create_missing)
-{
- unsigned int hash = FcCacheHash (dir);
- FcGlobalCacheDir *d, **prev;
+ if (current_arch_start < 0)
+ current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END));
+
+ if (!FcCacheCopyOld(fd, fd_orig, current_arch_start))
+ goto bail3;
+
+ close (fd_orig);
+ fd_orig = -1;
+
+ current_arch_start = lseek(fd, 0, SEEK_CUR);
+ if (ftruncate (fd, current_arch_start) == -1)
+ goto bail3;
+
+ header = malloc (10 + strlen (current_arch_machine_name));
+ if (!header)
+ goto bail3;
- for (prev = &cache->ents[hash % FC_GLOBAL_CACHE_DIR_HASH_SIZE];
- (d = *prev);
- prev = &(*prev)->next)
+ truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11;
+ for (dir = cache->dirs; dir; dir = dir->next)
{
- if (d->info.hash == hash && d->len == len &&
- !strncmp ((const char *) d->info.file,
- (const char *) dir, len))
- break;
+ truncate_to += strlen(dir->name) + 1;
+ truncate_to += sizeof (FcCache);
+ truncate_to = FcCacheNextOffset (current_arch_start + truncate_to);
+ truncate_to += dir->metadata.count;
}
- if (!(d = *prev))
+ truncate_to -= current_arch_start;
+
+ sprintf (header, "%8x ", (int)truncate_to);
+ strcat (header, current_arch_machine_name);
+ if (!FcCacheWriteString (fd, header))
+ goto bail4;
+
+ for (dir = cache->dirs; dir; dir = dir->next)
{
- int i;
- if (!create_missing)
- return 0;
- d = malloc (sizeof (FcGlobalCacheDir) + len + 1);
- if (!d)
- return 0;
- d->next = *prev;
- *prev = d;
- d->info.hash = hash;
- d->info.file = (FcChar8 *) (d + 1);
- strncpy ((char *) d->info.file, (const char *) dir, len);
- d->info.file[len] = '\0';
- d->info.time = 0;
- d->info.referenced = FcFalse;
- d->len = len;
- for (i = 0; i < FC_GLOBAL_CACHE_FILE_HASH_SIZE; i++)
- d->ents[i] = 0;
- d->subdirs = 0;
+ if (dir->ent)
+ {
+ FcCacheWriteString (fd, dir->name);
+ write (fd, &dir->metadata, sizeof(FcCache));
+ lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)), SEEK_SET);
+ write (fd, dir->ent, dir->metadata.count);
+ free (dir->ent);
+ }
}
- return d;
+ FcCacheWriteString (fd, "");
+
+ if (close (fd) == -1)
+ goto bail25;
+
+ if (!FcAtomicReplaceOrig (atomic))
+ goto bail25;
+
+ FcAtomicUnlock (atomic);
+ FcAtomicDestroy (atomic);
+
+ cache->updated = FcFalse;
+ return FcTrue;
+
+ bail4:
+ free (header);
+ bail3:
+ if (fd_orig != -1)
+ close (fd_orig);
+
+ close (fd);
+ bail25:
+ FcAtomicDeleteNew (atomic);
+ bail2:
+ FcAtomicUnlock (atomic);
+ bail1:
+ FcAtomicDestroy (atomic);
+ return FcFalse;
}
-static FcGlobalCacheInfo *
-FcGlobalCacheDirAdd (FcGlobalCache *cache,
- const FcChar8 *dir,
- time_t time,
- FcBool replace)
+#define PAGESIZE 8192
+/*
+ * Find the next presumably-mmapable offset after the supplied file
+ * position.
+ */
+static int
+FcCacheNextOffset(off_t w)
{
- FcGlobalCacheDir *d;
- FcFilePathInfo i;
- FcGlobalCacheSubdir *subdir;
- FcGlobalCacheDir *parent;
-
- /*
- * Add this directory to the cache
- */
- d = FcGlobalCacheDirGet (cache, dir, strlen ((const char *) dir), FcTrue);
- if (!d)
- return 0;
- d->info.time = time;
- i = FcFilePathInfoGet (dir);
- /*
- * Add this directory to the subdirectory list of the parent
- */
- parent = FcGlobalCacheDirGet (cache, i.dir, i.dir_len, FcTrue);
- if (!parent)
- return 0;
- subdir = malloc (sizeof (FcGlobalCacheSubdir) +
- strlen ((const char *) i.base) + 1);
- if (!subdir)
- return 0;
- subdir->file = (FcChar8 *) (subdir + 1);
- strcpy ((char *) subdir->file, (const char *) i.base);
- subdir->next = parent->subdirs;
- parent->subdirs = subdir;
- return &d->info;
+ if (w % PAGESIZE == 0)
+ return w;
+ else
+ return ((w / PAGESIZE)+1)*PAGESIZE;
}
-static void
-FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
+/* return the address of the segment for the provided arch,
+ * or -1 if arch not found */
+static off_t
+FcCacheSkipToArch (int fd, const char * arch)
{
- FcGlobalCacheFile *f, *next;
- int h;
- FcGlobalCacheSubdir *s, *nexts;
+ char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
+ char * candidate_arch;
+ off_t current_arch_start = 0;
- for (h = 0; h < FC_GLOBAL_CACHE_FILE_HASH_SIZE; h++)
- for (f = d->ents[h]; f; f = next)
- {
- next = f->next;
- free (f);
- }
- for (s = d->subdirs; s; s = nexts)
+ /* skip arches that are not the current arch */
+ while (1)
{
- nexts = s->next;
- free (s);
+ long bs;
+
+ if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
+ return -1;
+
+ if (FcCacheReadString (fd, candidate_arch_machine_name_count,
+ sizeof (candidate_arch_machine_name_count)) == 0)
+ return -1;
+ if (!strlen(candidate_arch_machine_name_count))
+ return -1;
+ bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16);
+
+ // count = 0 should probably be distinguished from the !bs condition
+ if (!bs || bs < strlen (candidate_arch_machine_name_count))
+ return -1;
+
+ candidate_arch++; /* skip leading space */
+
+ if (strcmp (candidate_arch, arch)==0)
+ return current_arch_start;
+ current_arch_start += bs;
}
- free (d);
+
+ return -1;
}
-FcBool
-FcGlobalCacheScanDir (FcFontSet *set,
- FcStrSet *dirs,
- FcGlobalCache *cache,
- const FcChar8 *dir)
+/* Cuts out the segment at the file pointer (moves everything else
+ * down to cover it), and leaves the file pointer at the end of the
+ * file. */
+static FcBool
+FcCacheCopyOld (int fd, int fd_orig, off_t start)
{
- FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, dir,
- strlen ((const char *) dir),
- FcFalse);
- FcGlobalCacheFile *f;
- int h;
- int dir_len;
- FcGlobalCacheSubdir *subdir;
-
- if (FcDebug() & FC_DBG_CACHE)
- printf ("FcGlobalCacheScanDir %s\n", dir);
-
- if (!d)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf ("\tNo dir cache entry\n");
+ char * buf = malloc (8192);
+ char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
+ long bs;
+ int c, bytes_skipped;
+ off_t loc;
+
+ if (!buf)
return FcFalse;
- }
- if (!FcGlobalCacheCheckTime (&d->info))
+ loc = 0;
+ lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET);
+ do
{
- if (FcDebug () & FC_DBG_CACHE)
- printf ("\tdir cache entry time mismatch\n");
- return FcFalse;
+ int b = 8192;
+ if (loc + b > start)
+ b = start - loc;
+
+ if ((c = read (fd_orig, buf, b)) <= 0)
+ break;
+ if (write (fd, buf, c) < 0)
+ goto bail;
+
+ loc += c;
}
+ while (c > 0);
- dir_len = strlen ((const char *) dir);
- for (h = 0; h < FC_GLOBAL_CACHE_FILE_HASH_SIZE; h++)
- for (f = d->ents[h]; f; f = f->next)
- {
- if (FcDebug() & FC_DBG_CACHEV)
- printf ("FcGlobalCacheScanDir add file %s\n", f->info.file);
- if (!FcCacheFontSetAdd (set, dirs, dir, dir_len,
- f->info.file, f->name))
- {
- cache->broken = FcTrue;
- return FcFalse;
- }
- FcGlobalCacheReferenced (cache, &f->info);
- }
- for (subdir = d->subdirs; subdir; subdir = subdir->next)
+ lseek (fd, start, SEEK_SET);
+ if (FcCacheReadString (fd, candidate_arch_machine_name,
+ sizeof (candidate_arch_machine_name)) == 0)
+ goto done;
+ if (!strlen(candidate_arch_machine_name))
+ goto done;
+
+ bs = strtol(candidate_arch_machine_name, 0, 16);
+ if (bs == 0)
+ goto done;
+
+ bytes_skipped = 0;
+ do
{
- if (!FcCacheFontSetAdd (set, dirs, dir, dir_len,
- subdir->file, FC_FONT_FILE_DIR))
- {
- cache->broken = FcTrue;
- return FcFalse;
- }
+ lseek (fd, start+bs+bytes_skipped, SEEK_SET);
+ if ((c = read (fd, buf, 8192)) <= 0)
+ break;
+ lseek (fd, start+bytes_skipped, SEEK_SET);
+ if (write (fd, buf, c) < 0)
+ goto bail;
+ bytes_skipped += c;
}
-
- FcGlobalCacheReferenced (cache, &d->info);
+ while (c > 0);
+ lseek (fd, start+bytes_skipped, SEEK_SET);
+ done:
+ free (buf);
return FcTrue;
+
+ bail:
+ free (buf);
+ return FcFalse;
}
-/*
- * Locate the cache entry for a particular file
- */
-FcGlobalCacheFile *
-FcGlobalCacheFileGet (FcGlobalCache *cache,
- const FcChar8 *file,
- int id,
- int *count)
+/* Does not check that the cache has the appropriate arch section. */
+FcBool
+FcDirCacheValid (const FcChar8 *dir)
{
- FcFilePathInfo i = FcFilePathInfoGet (file);
- FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, i.dir,
- i.dir_len, FcFalse);
- FcGlobalCacheFile *f, *match = 0;
- int max = -1;
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ struct stat file_stat, dir_stat;
- if (!d)
- return 0;
- for (f = d->ents[i.base_hash % FC_GLOBAL_CACHE_FILE_HASH_SIZE]; f; f = f->next)
+ if (stat ((char *) dir, &dir_stat) < 0)
{
- if (f->info.hash == i.base_hash &&
- !strcmp ((const char *) f->info.file, (const char *) i.base))
- {
- if (f->id == id)
- match = f;
- if (f->id > max)
- max = f->id;
- }
+ FcStrFree (cache_file);
+ return FcFalse;
}
- if (count)
- *count = max;
- return match;
-}
-
-/*
- * Add a file entry to the cache
- */
-static FcGlobalCacheInfo *
-FcGlobalCacheFileAdd (FcGlobalCache *cache,
- const FcChar8 *path,
- int id,
- time_t time,
- const FcChar8 *name,
- FcBool replace)
-{
- FcFilePathInfo i = FcFilePathInfoGet (path);
- FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, i.dir,
- i.dir_len, FcTrue);
- FcGlobalCacheFile *f, **prev;
-
- if (!d)
- return 0;
- for (prev = &d->ents[i.base_hash % FC_GLOBAL_CACHE_FILE_HASH_SIZE];
- (f = *prev);
- prev = &(*prev)->next)
- {
- if (f->info.hash == i.base_hash &&
- f->id == id &&
- !strcmp ((const char *) f->info.file, (const char *) i.base))
- {
- break;
- }
- }
- if (*prev)
+ if (stat ((char *) cache_file, &file_stat) < 0)
{
- if (!replace)
- return 0;
-
- f = *prev;
- if (f->info.referenced)
- cache->referenced--;
- *prev = f->next;
- free (f);
+ FcStrFree (cache_file);
+ return FcFalse;
}
- f = malloc (sizeof (FcGlobalCacheFile) +
- strlen ((char *) i.base) + 1 +
- strlen ((char *) name) + 1);
- if (!f)
- return 0;
- f->next = *prev;
- *prev = f;
- f->info.hash = i.base_hash;
- f->info.file = (FcChar8 *) (f + 1);
- f->info.time = time;
- f->info.referenced = FcFalse;
- f->id = id;
- f->name = f->info.file + strlen ((char *) i.base) + 1;
- strcpy ((char *) f->info.file, (const char *) i.base);
- strcpy ((char *) f->name, (const char *) name);
- return &f->info;
+
+ FcStrFree (cache_file);
+ /*
+ * If the directory has been modified more recently than
+ * the cache file, the cache is not valid
+ */
+ if (dir_stat.st_mtime - file_stat.st_mtime > 0)
+ return FcFalse;
+ return FcTrue;
}
-FcGlobalCache *
-FcGlobalCacheCreate (void)
+/* Assumes that the cache file in 'dir' exists.
+ * Checks that the cache has the appropriate arch section. */
+FcBool
+FcDirCacheHasCurrentArch (const FcChar8 *dir)
{
- FcGlobalCache *cache;
- int h;
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ int fd;
+ off_t current_arch_start;
+ char *current_arch_machine_name;
- cache = malloc (sizeof (FcGlobalCache));
- if (!cache)
- return 0;
- for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
- cache->ents[h] = 0;
- cache->entries = 0;
- cache->referenced = 0;
- cache->updated = FcFalse;
- return cache;
+ current_arch_machine_name = FcCacheMachineSignature();
+ fd = open ((char *)cache_file, O_RDONLY);
+ if (fd == -1)
+ return FcFalse;
+
+ current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
+ close (fd);
+
+ if (current_arch_start < 0)
+ return FcFalse;
+
+ return FcTrue;
}
-void
-FcGlobalCacheDestroy (FcGlobalCache *cache)
+FcBool
+FcDirCacheUnlink (const FcChar8 *dir)
{
- FcGlobalCacheDir *d, *next;
- int h;
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
- for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
+ if (unlink ((char *)cache_file) != 0)
{
- for (d = cache->ents[h]; d; d = next)
- {
- next = d->next;
- FcGlobalCacheDirDestroy (d);
- }
+ FcStrFree (cache_file);
+ return FcFalse;
}
- free (cache);
+
+ FcStrFree (cache_file);
+ return FcTrue;
}
-/*
- * Cache file syntax is quite simple:
- *
- * "file_name" id time "font_name" \n
- */
-
-void
-FcGlobalCacheLoad (FcGlobalCache *cache,
- const FcChar8 *cache_file)
+static int
+FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
+ FcStrList *list, FcFontSet * set)
{
- FILE *f;
- FcChar8 file_buf[8192], *file;
- int id;
- time_t time;
- FcChar8 name_buf[8192], *name;
- FcGlobalCacheInfo *info;
-
- f = fopen ((char *) cache_file, "r");
- if (!f)
- return;
+ int ret = 0;
+ FcChar8 *dir;
+ FcChar8 *file, *base;
+ FcStrSet *subdirs;
+ FcStrList *sublist;
+ struct stat statb;
- cache->updated = FcFalse;
- file = 0;
- name = 0;
- while ((file = FcCacheReadString (f, file_buf, sizeof (file_buf))) &&
- FcCacheReadInt (f, &id) &&
- FcCacheReadTime (f, &time) &&
- (name = FcCacheReadString (f, name_buf, sizeof (name_buf))))
+ /*
+ * Read in the results from 'list'.
+ */
+ while ((dir = FcStrListNext (list)))
{
- if (FcDebug () & FC_DBG_CACHEV)
- printf ("FcGlobalCacheLoad \"%s\" \"%20.20s\"\n", file, name);
- if (!FcStrCmp (name, FC_FONT_FILE_DIR))
- info = FcGlobalCacheDirAdd (cache, file, time, FcFalse);
- else
- info = FcGlobalCacheFileAdd (cache, file, id, time, name, FcFalse);
- if (!info)
- cache->broken = FcTrue;
- else
- cache->entries++;
- if (FcDebug () & FC_DBG_CACHE_REF)
- printf ("FcGlobalCacheLoad entry %d %s\n",
- cache->entries, file);
- if (file != file_buf)
+ /* freed below */
+ file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
+ if (!file)
+ return FcFalse;
+
+ strcpy ((char *) file, (char *) dir);
+ strcat ((char *) file, "/");
+ base = file + strlen ((char *) file);
+
+ subdirs = FcStrSetCreate ();
+ if (!subdirs)
+ {
+ fprintf (stderr, "Can't create directory set\n");
+ ret++;
free (file);
- if (name != name_buf)
- free (name);
- file = 0;
- name = 0;
- }
- if (file && file != file_buf)
+ continue;
+ }
+
+ if (access ((char *) dir, X_OK) < 0)
+ {
+ switch (errno) {
+ case ENOENT:
+ case ENOTDIR:
+ case EACCES:
+ break;
+ default:
+ fprintf (stderr, "\"%s\": ", dir);
+ perror ("");
+ ret++;
+ }
+ FcStrSetDestroy (subdirs);
+ free (file);
+ continue;
+ }
+ if (stat ((char *) dir, &statb) == -1)
+ {
+ fprintf (stderr, "\"%s\": ", dir);
+ perror ("");
+ FcStrSetDestroy (subdirs);
+ ret++;
+ free (file);
+ continue;
+ }
+ if (!S_ISDIR (statb.st_mode))
+ {
+ fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
+ FcStrSetDestroy (subdirs);
+ free (file);
+ continue;
+ }
+ if (!FcDirCacheValid (dir) || !FcDirCacheRead (set, subdirs, dir))
+ {
+ if (FcDebug () & FC_DBG_FONTSET)
+ printf ("cache scan dir %s\n", dir);
+
+ FcDirScanConfig (set, subdirs, cache,
+ config->blanks, dir, FcFalse, config);
+ }
+ sublist = FcStrListCreate (subdirs);
+ FcStrSetDestroy (subdirs);
+ if (!sublist)
+ {
+ fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
+ ret++;
+ free (file);
+ continue;
+ }
+ ret += FcCacheReadDirs (config, cache, sublist, set);
free (file);
- if (name && name != name_buf)
- free (name);
- fclose (f);
+ }
+ FcStrListDone (list);
+ return ret;
}
-FcBool
-FcGlobalCacheUpdate (FcGlobalCache *cache,
- const FcChar8 *file,
- int id,
- const FcChar8 *name)
+FcFontSet *
+FcCacheRead (FcConfig *config, FcGlobalCache * cache)
{
- const FcChar8 *match;
- struct stat statb;
- FcGlobalCacheInfo *info;
+ FcFontSet * s = FcFontSetCreate();
+ if (!s)
+ return 0;
- match = file;
+ if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s))
+ goto bail;
- if (stat ((char *) file, &statb) < 0)
- return FcFalse;
- if (S_ISDIR (statb.st_mode))
- info = FcGlobalCacheDirAdd (cache, file, statb.st_mtime,
- FcTrue);
- else
- info = FcGlobalCacheFileAdd (cache, file, id, statb.st_mtime,
- name, FcTrue);
- if (info)
- {
- FcGlobalCacheReferenced (cache, info);
- cache->updated = FcTrue;
- }
- else
- cache->broken = FcTrue;
- return info != 0;
+ return s;
+
+ bail:
+ FcFontSetDestroy (s);
+ return 0;
}
+/* read serialized state from the cache file */
FcBool
-FcGlobalCacheSave (FcGlobalCache *cache,
- const FcChar8 *cache_file)
+FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir)
{
- FILE *f;
- int dir_hash, file_hash;
- FcGlobalCacheDir *dir;
- FcGlobalCacheFile *file;
- FcAtomic *atomic;
+ char *cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ int fd;
+ char * current_arch_machine_name;
+ char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
+ off_t current_arch_start = 0;
+ char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
- if (!cache->updated && cache->referenced == cache->entries)
- return FcTrue;
-
- if (cache->broken)
- return FcFalse;
+ if (!cache_file)
+ goto bail;
- /* Set-UID programs can't safely update the cache */
- if (getuid () != geteuid ())
- return FcFalse;
-
- atomic = FcAtomicCreate (cache_file);
- if (!atomic)
- goto bail0;
- if (!FcAtomicLock (atomic))
- goto bail1;
- f = fopen ((char *) FcAtomicNewFile(atomic), "w");
- if (!f)
- goto bail2;
+ current_arch_machine_name = FcCacheMachineSignature();
+ fd = open(cache_file, O_RDONLY);
+ if (fd == -1)
+ goto bail;
- for (dir_hash = 0; dir_hash < FC_GLOBAL_CACHE_DIR_HASH_SIZE; dir_hash++)
- {
- for (dir = cache->ents[dir_hash]; dir; dir = dir->next)
- {
- if (!dir->info.referenced)
- continue;
- if (!FcCacheWriteString (f, dir->info.file))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteInt (f, 0))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteTime (f, dir->info.time))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteString (f, (FcChar8 *) FC_FONT_FILE_DIR))
- goto bail4;
- if (putc ('\n', f) == EOF)
- goto bail4;
-
- for (file_hash = 0; file_hash < FC_GLOBAL_CACHE_FILE_HASH_SIZE; file_hash++)
- {
- for (file = dir->ents[file_hash]; file; file = file->next)
- {
- if (!file->info.referenced)
- continue;
- if (!FcCacheWritePath (f, dir->info.file, file->info.file))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteInt (f, file->id < 0 ? 0 : file->id))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteTime (f, file->info.time))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteString (f, file->name))
- goto bail4;
- if (putc ('\n', f) == EOF)
- goto bail4;
- }
- }
- }
- }
+ current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
+ if (current_arch_start < 0)
+ goto bail1;
- if (fclose (f) == EOF)
- goto bail3;
-
- if (!FcAtomicReplaceOrig (atomic))
- goto bail3;
-
- FcAtomicUnlock (atomic);
- FcAtomicDestroy (atomic);
+ lseek (fd, current_arch_start, SEEK_SET);
+ if (FcCacheReadString (fd, candidate_arch_machine_name,
+ sizeof (candidate_arch_machine_name)) == 0)
+ goto bail1;
- cache->updated = FcFalse;
+ while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
+ FcStrSetAdd (dirs, (FcChar8 *)subdirName);
+
+ if (!FcDirCacheConsume (fd, set))
+ goto bail1;
+
+ close(fd);
+ free (cache_file);
return FcTrue;
-bail4:
- fclose (f);
-bail3:
- FcAtomicDeleteNew (atomic);
-bail2:
- FcAtomicUnlock (atomic);
-bail1:
- FcAtomicDestroy (atomic);
-bail0:
+ bail1:
+ close (fd);
+ bail:
+ free (cache_file);
return FcFalse;
}
-FcBool
-FcDirCacheValid (const FcChar8 *dir)
+static FcBool
+FcDirCacheConsume (int fd, FcFontSet *set)
{
- FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
- struct stat file_stat, dir_stat;
+ FcCache metadata;
+ void * current_dir_block;
+ off_t pos;
- if (stat ((char *) dir, &dir_stat) < 0)
- {
- FcStrFree (cache_file);
- return FcFalse;
- }
- if (stat ((char *) cache_file, &file_stat) < 0)
- {
- FcStrFree (cache_file);
+ read(fd, &metadata, sizeof(FcCache));
+ if (metadata.magic != FC_CACHE_MAGIC)
+ return FcFalse;
+
+ if (!metadata.count)
+ return FcTrue;
+
+ pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
+ current_dir_block = mmap (0, metadata.count,
+ PROT_READ, MAP_SHARED, fd, pos);
+ if (current_dir_block == MAP_FAILED)
return FcFalse;
- }
- FcStrFree (cache_file);
- /*
- * If the directory has been modified more recently than
- * the cache file, the cache is not valid
- */
- if (dir_stat.st_mtime - file_stat.st_mtime > 0)
+
+ if (!FcFontSetUnserialize (metadata, set, current_dir_block))
return FcFalse;
+
return FcTrue;
}
+static void *
+FcDirCacheProduce (FcFontSet *set, FcCache *metadata)
+{
+ void * current_dir_block, * final_dir_block;
+ static unsigned int rand_state = 0;
+ int bank;
+
+ if (!rand_state)
+ rand_state = time(0L);
+ bank = rand_r(&rand_state);
+
+ while (FcCacheHaveBank(bank))
+ bank = rand_r(&rand_state);
+
+ memset (metadata, 0, sizeof(FcCache));
+ FcFontSetNewBank();
+ metadata->count = FcFontSetNeededBytes (set);
+ metadata->magic = FC_CACHE_MAGIC;
+ metadata->bank = bank;
+
+ if (!metadata->count) /* not a failure, no fonts to write */
+ return 0;
+
+ current_dir_block = malloc (metadata->count);
+ if (!current_dir_block)
+ goto bail;
+ final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block);
+
+ if ((char *)current_dir_block + metadata->count != final_dir_block)
+ goto bail;
+
+ if (!FcFontSetSerialize (bank, set))
+ goto bail;
+
+ return current_dir_block;
+
+ bail:
+ free (current_dir_block);
+ return 0;
+}
+
+/* write serialized state to the cache file */
FcBool
-FcDirCacheReadDir (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
+FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
{
- FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
- FILE *f;
- FcChar8 *base;
- int id;
- int dir_len;
- FcChar8 file_buf[8192], *file;
- FcChar8 name_buf[8192], *name;
- FcBool ret = FcFalse;
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ int fd, fd_orig, i, dirs_count;
+ FcAtomic *atomic;
+ FcCache metadata;
+ off_t current_arch_start = 0, truncate_to;
+
+ char *current_arch_machine_name, * header;
+ void *current_dir_block;
if (!cache_file)
+ goto bail;
+
+ current_dir_block = FcDirCacheProduce (set, &metadata);
+
+ if (metadata.count && !current_dir_block)
goto bail0;
-
+
if (FcDebug () & FC_DBG_CACHE)
- printf ("FcDirCacheReadDir cache_file \"%s\"\n", cache_file);
-
- f = fopen ((char *) cache_file, "r");
- if (!f)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" no cache file\n");
- goto bail1;
- }
+ printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
- if (!FcDirCacheValid (dir))
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" cache file older than directory\n");
- goto bail2;
- }
-
- base = (FcChar8 *) strrchr ((char *) cache_file, '/');
- if (!base)
- goto bail2;
- base++;
- dir_len = base - cache_file;
-
- file = 0;
- name = 0;
- while ((file = FcCacheReadString (f, file_buf, sizeof (file_buf))) &&
- FcCacheReadInt (f, &id) &&
- (name = FcCacheReadString (f, name_buf, sizeof (name_buf))))
+ atomic = FcAtomicCreate (cache_file);
+ if (!atomic)
+ goto bail0;
+
+ if (!FcAtomicLock (atomic))
+ goto bail1;
+
+ fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY, 0666);
+
+ fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666);
+ if (fd == -1)
+ goto bail2;
+
+ current_arch_machine_name = FcCacheMachineSignature ();
+ current_arch_start = 0;
+
+ if (fd_orig != -1)
+ current_arch_start =
+ FcCacheSkipToArch(fd_orig, current_arch_machine_name);
+
+ if (current_arch_start < 0)
+ current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END));
+
+ if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start))
+ goto bail3;
+
+ if (fd_orig != -1)
+ close (fd_orig);
+
+ current_arch_start = lseek(fd, 0, SEEK_CUR);
+ if (ftruncate (fd, current_arch_start) == -1)
+ goto bail3;
+
+ /* allocate space for subdir names in this block */
+ dirs_count = 0;
+ for (i = 0; i < dirs->size; i++)
+ dirs_count += strlen((char *)dirs->strs[i]) + 1;
+ dirs_count ++;
+
+ /* now write the address of the next offset */
+ truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start;
+ header = malloc (10 + strlen (current_arch_machine_name));
+ if (!header)
+ goto bail3;
+ sprintf (header, "%8x ", (int)truncate_to);
+ strcat (header, current_arch_machine_name);
+ if (!FcCacheWriteString (fd, header))
+ goto bail4;
+
+ for (i = 0; i < dirs->size; i++)
+ FcCacheWriteString (fd, (char *)dirs->strs[i]);
+ FcCacheWriteString (fd, "");
+
+ write (fd, &metadata, sizeof(FcCache));
+ if (metadata.count)
{
- if (!FcCacheFontSetAdd (set, dirs, cache_file, dir_len,
- file, name))
- goto bail3;
- if (file != file_buf)
- free (file);
- if (name != name_buf)
- free (name);
- file = name = 0;
+ lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET);
+ write (fd, current_dir_block, metadata.count);
+ free (current_dir_block);
}
- if (FcDebug () & FC_DBG_CACHE)
- printf (" cache loaded\n");
-
- ret = FcTrue;
-bail3:
- if (file && file != file_buf)
- free (file);
- if (name && name != name_buf)
- free (name);
-bail2:
- fclose (f);
-bail1:
+
+ /* this actually serves to pad out the cache file, if needed */
+ if (ftruncate (fd, current_arch_start + truncate_to) == -1)
+ goto bail4;
+
+ close(fd);
+ if (!FcAtomicReplaceOrig(atomic))
+ goto bail4;
+ FcAtomicUnlock (atomic);
+ FcAtomicDestroy (atomic);
+ return FcTrue;
+
+ bail4:
+ free (header);
+ bail3:
+ close (fd);
+ bail2:
+ FcAtomicUnlock (atomic);
+ bail1:
+ FcAtomicDestroy (atomic);
+ bail0:
+ unlink ((char *)cache_file);
free (cache_file);
-bail0:
- return ret;
+ if (current_dir_block)
+ free (current_dir_block);
+ bail:
+ return FcFalse;
}
-/*
- * return the path from the directory containing 'cache' to 'file'
- */
+static char *
+FcCacheMachineSignature ()
+{
+ static char buf[MACHINE_SIGNATURE_SIZE];
+ int magic = ENDIAN_TEST;
+ char * m = (char *)&magic;
+
+ sprintf (buf, "%2x%2x%2x%2x "
+ "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x "
+ "%4x %4x %4x %4x %4x %4x %4x\n",
+ m[0], m[1], m[2], m[3],
+ (unsigned int)sizeof (char),
+ (unsigned int)sizeof (char *),
+ (unsigned int)sizeof (int),
+ (unsigned int)sizeof (FcPattern),
+ (unsigned int)sizeof (FcPatternEltPtr),
+ (unsigned int)sizeof (struct _FcPatternElt *),
+ (unsigned int)sizeof (FcPatternElt),
+ (unsigned int)sizeof (FcObjectPtr),
+ (unsigned int)sizeof (FcValueListPtr),
+ (unsigned int)sizeof (FcValue),
+ (unsigned int)sizeof (FcValueBinding),
+ (unsigned int)sizeof (struct _FcValueList *),
+ (unsigned int)sizeof (FcCharSet),
+ (unsigned int)sizeof (FcCharLeaf **),
+ (unsigned int)sizeof (FcChar16 *),
+ (unsigned int)sizeof (FcChar16),
+ (unsigned int)sizeof (FcCharLeaf),
+ (unsigned int)sizeof (FcChar32),
+ (unsigned int)sizeof (FcCache));
+
+ return buf;
+}
+
+static int banks_ptr = 0, banks_alloc = 0;
+static int * bankId = 0, * bankIdx = 0;
-static const FcChar8 *
-FcFileBaseName (const FcChar8 *cache, const FcChar8 *file)
+static FcBool
+FcCacheHaveBank (int bank)
{
- const FcChar8 *cache_slash;
+ int i;
+
+ if (bank < FC_BANK_FIRST)
+ return FcTrue;
+
+ for (i = 0; i < banks_ptr; i++)
+ if (bankId[i] == bank)
+ return FcTrue;
- cache_slash = (const FcChar8 *) strrchr ((const char *) cache, '/');
- if (cache_slash && !strncmp ((const char *) cache, (const char *) file,
- (cache_slash + 1) - cache))
- return file + ((cache_slash + 1) - cache);
- return file;
+ return FcFalse;
}
-FcBool
-FcDirCacheWriteDir (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
+int
+FcCacheBankToIndex (int bank)
{
- FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
- FcPattern *font;
- FILE *f;
- FcChar8 *name;
- const FcChar8 *file, *base;
- int n;
- int id;
- FcBool ret;
- FcStrList *list;
+ int i, j;
- if (!cache_file)
- goto bail0;
- if (FcDebug () & FC_DBG_CACHE)
- printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
-
- f = fopen ((char *) cache_file, "w");
- if (!f)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" can't create \"%s\"\n", cache_file);
- goto bail1;
- }
-
- list = FcStrListCreate (dirs);
- if (!list)
- goto bail2;
-
- while ((dir = FcStrListNext (list)))
- {
- base = FcFileBaseName (cache_file, dir);
- if (!FcCacheWriteString (f, base))
- goto bail3;
- if (putc (' ', f) == EOF)
- goto bail3;
- if (!FcCacheWriteInt (f, 0))
- goto bail3;
- if (putc (' ', f) == EOF)
- goto bail3;
- if (!FcCacheWriteString (f, FC_FONT_FILE_DIR))
- goto bail3;
- if (putc ('\n', f) == EOF)
- goto bail3;
- }
-
- for (n = 0; n < set->nfont; n++)
+ for (i = 0; i < banks_ptr; i++)
+ if (bankId[bankIdx[i]] == bank)
+ {
+ int t = bankIdx[i];
+
+ for (j = i; j > 0; j--)
+ bankIdx[j] = bankIdx[j-1];
+ bankIdx[0] = t;
+ return t;
+ }
+
+ if (banks_ptr >= banks_alloc)
{
- font = set->fonts[n];
- if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
- goto bail3;
- base = FcFileBaseName (cache_file, file);
- if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
- goto bail3;
- if (FcDebug () & FC_DBG_CACHEV)
- printf (" write file \"%s\"\n", base);
- if (!FcCacheWriteString (f, base))
- goto bail3;
- if (putc (' ', f) == EOF)
- goto bail3;
- if (!FcCacheWriteInt (f, id))
- goto bail3;
- if (putc (' ', f) == EOF)
- goto bail3;
- name = FcNameUnparse (font);
- if (!name)
- goto bail3;
- ret = FcCacheWriteString (f, name);
- free (name);
- if (!ret)
- goto bail3;
- if (putc ('\n', f) == EOF)
- goto bail3;
- }
-
- FcStrListDone (list);
+ int * b, * bidx;
+ b = realloc (bankId, (banks_alloc + 4) * sizeof(int));
+ if (!b)
+ return -1;
+ bankId = b;
- if (fclose (f) == EOF)
- goto bail1;
-
- free (cache_file);
+ bidx = realloc (bankIdx, (banks_alloc + 4) * sizeof(int));
+ if (!bidx)
+ return -1;
+ bankIdx = bidx;
- if (FcDebug () & FC_DBG_CACHE)
- printf (" cache written\n");
- return FcTrue;
-
-bail3:
- FcStrListDone (list);
-bail2:
- fclose (f);
-bail1:
- unlink ((char *) cache_file);
- free (cache_file);
-bail0:
- return FcFalse;
+ banks_alloc += 4;
+ }
+
+ i = banks_ptr++;
+ bankId[i] = bank;
+ bankIdx[i] = i;
+ return i;
}
git.wh0rd.org / fontconfig.git / blobdiff