/*
- * $XFree86: xc/lib/fontconfig/src/fccache.c,v 1.2 2002/02/15 06:01:27 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
*
* 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 "fcint.h"
-static unsigned int
-FcFileCacheHash (const FcChar8 *string)
-{
- unsigned int h = 0;
- FcChar8 c;
-
- while ((c = *string++))
- h = (h << 1) ^ c;
- return h;
-}
+#define ENDIAN_TEST 0x12345678
+#define MACHINE_SIGNATURE_SIZE 9 + 5*19 + 1
-FcChar8 *
-FcFileCacheFind (FcFileCache *cache,
- const FcChar8 *file,
- int id,
- int *count)
-{
- unsigned int hash;
- const FcChar8 *match;
- FcFileCacheEnt *c, *name;
- int maxid;
- struct stat statb;
-
- match = file;
-
- hash = FcFileCacheHash (match);
- name = 0;
- maxid = -1;
- for (c = cache->ents[hash % FC_FILE_CACHE_HASH_SIZE]; c; c = c->next)
- {
- if (c->hash == hash && !strcmp (match, c->file))
- {
- if (c->id > maxid)
- maxid = c->id;
- if (c->id == id)
- {
- if (stat ((char *) file, &statb) < 0)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" file missing\n");
- return 0;
- }
- if (statb.st_mtime != c->time)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" timestamp mismatch (was %d is %d)\n",
- (int) c->time, (int) statb.st_mtime);
- return 0;
- }
- if (!c->referenced)
- {
- cache->referenced++;
- c->referenced = FcTrue;
- }
- name = c;
- }
- }
- }
- if (!name)
- return 0;
- *count = maxid + 1;
- return name->name;
-}
+static char *
+FcCacheProduceMachineSignature (void);
/*
- * Cache file syntax is quite simple:
- *
- * "file_name" id time "font_name" \n
+ * POSIX has broken stdio so that getc must do thread-safe locking,
+ * this is a serious performance problem for applications doing large
+ * amounts of IO with getc (as is done here). If available, use
+ * the getc_unlocked varient instead.
*/
+#if defined(getc_unlocked) || defined(_IO_getc_unlocked)
+#define GETC(f) getc_unlocked(f)
+#define PUTC(c,f) putc_unlocked(c,f)
+#else
+#define GETC(f) getc(f)
+#define PUTC(c,f) putc(c,f)
+#endif
+
+#define FC_DBG_CACHE_REF 1024
+
+#define PAGESIZE 8192
+
+static FcBool force;
+
static FcChar8 *
-FcFileCacheReadString (FILE *f, FcChar8 *dest, int len)
+FcCacheReadString (FILE *f, FcChar8 *dest, int len)
{
int c;
FcBool escape;
int size;
int i;
- while ((c = getc (f)) != EOF)
+ while ((c = GETC (f)) != EOF)
if (c == '"')
break;
if (c == EOF)
i = 0;
d = dest;
escape = FcFalse;
- while ((c = getc (f)) != EOF)
+ while ((c = GETC (f)) != EOF)
{
if (!escape)
{
}
if (i == size)
{
- FcChar8 *new = malloc (size * 2);
+ FcChar8 *new = malloc (size * 2); /* freed in caller */
if (!new)
break;
memcpy (new, d, size);
}
static FcBool
-FcFileCacheReadUlong (FILE *f, unsigned long *dest)
+FcCacheReadUlong (FILE *f, unsigned long *dest)
{
unsigned long t;
int c;
- while ((c = getc (f)) != EOF)
+ while ((c = GETC (f)) != EOF)
{
if (!isspace (c))
break;
if (!isdigit (c))
return FcFalse;
t = t * 10 + (c - '0');
- c = getc (f);
+ c = GETC (f);
}
*dest = t;
return FcTrue;
}
static FcBool
-FcFileCacheReadInt (FILE *f, int *dest)
+FcCacheReadInt (FILE *f, int *dest)
{
unsigned long t;
FcBool ret;
- ret = FcFileCacheReadUlong (f, &t);
+ ret = FcCacheReadUlong (f, &t);
if (ret)
*dest = (int) t;
return ret;
}
static FcBool
-FcFileCacheReadTime (FILE *f, time_t *dest)
+FcCacheReadTime (FILE *f, time_t *dest)
{
unsigned long t;
FcBool ret;
- ret = FcFileCacheReadUlong (f, &t);
+ ret = FcCacheReadUlong (f, &t);
if (ret)
*dest = (time_t) t;
return ret;
}
static FcBool
-FcFileCacheAdd (FcFileCache *cache,
- const FcChar8 *file,
- int id,
- time_t time,
- const FcChar8 *name,
- FcBool replace)
-{
- FcFileCacheEnt *c;
- FcFileCacheEnt **prev, *old;
- unsigned int hash;
-
- if (FcDebug () & FC_DBG_CACHE)
- {
- printf ("%s face %s/%d as %s\n", replace ? "Replace" : "Add",
- file, id, name);
- }
- hash = FcFileCacheHash (file);
- for (prev = &cache->ents[hash % FC_FILE_CACHE_HASH_SIZE];
- (old = *prev);
- prev = &(*prev)->next)
- {
- if (old->hash == hash && old->id == id && !strcmp (old->file, file))
- break;
- }
- if (*prev)
- {
- if (!replace)
- return FcFalse;
-
- old = *prev;
- if (old->referenced)
- cache->referenced--;
- *prev = old->next;
- free (old);
- cache->entries--;
- }
-
- c = malloc (sizeof (FcFileCacheEnt) +
- strlen ((char *) file) + 1 +
- strlen ((char *) name) + 1);
- if (!c)
- return FcFalse;
- c->next = *prev;
- *prev = c;
- c->hash = hash;
- c->file = (FcChar8 *) (c + 1);
- c->id = id;
- c->name = c->file + strlen ((char *) file) + 1;
- strcpy (c->file, file);
- c->time = time;
- c->referenced = replace;
- strcpy (c->name, name);
- cache->entries++;
- return FcTrue;
-}
-
-FcFileCache *
-FcFileCacheCreate (void)
-{
- FcFileCache *cache;
- int h;
-
- cache = malloc (sizeof (FcFileCache));
- if (!cache)
- return 0;
- for (h = 0; h < FC_FILE_CACHE_HASH_SIZE; h++)
- cache->ents[h] = 0;
- cache->entries = 0;
- cache->referenced = 0;
- cache->updated = FcFalse;
- return cache;
-}
-
-void
-FcFileCacheDestroy (FcFileCache *cache)
+FcCacheWriteChars (FILE *f, const FcChar8 *chars)
{
- FcFileCacheEnt *c, *next;
- int h;
-
- for (h = 0; h < FC_FILE_CACHE_HASH_SIZE; h++)
+ FcChar8 c;
+ while ((c = *chars++))
{
- for (c = cache->ents[h]; c; c = next)
- {
- next = c->next;
- free (c);
+ switch (c) {
+ case '"':
+ case '\\':
+ if (PUTC ('\\', f) == EOF)
+ return FcFalse;
+ /* fall through */
+ default:
+ if (PUTC (c, f) == EOF)
+ return FcFalse;
}
}
- free (cache);
-}
-
-void
-FcFileCacheLoad (FcFileCache *cache,
- const FcChar8 *cache_file)
-{
- FILE *f;
- FcChar8 file_buf[8192], *file;
- int id;
- time_t time;
- FcChar8 name_buf[8192], *name;
-
- f = fopen ((char *) cache_file, "r");
- if (!f)
- return;
-
- cache->updated = FcFalse;
- file = 0;
- name = 0;
- while ((file = FcFileCacheReadString (f, file_buf, sizeof (file_buf))) &&
- FcFileCacheReadInt (f, &id) &&
- FcFileCacheReadTime (f, &time) &&
- (name = FcFileCacheReadString (f, name_buf, sizeof (name_buf))))
- {
- (void) FcFileCacheAdd (cache, file, id, time, name, FcFalse);
- if (file != file_buf)
- free (file);
- if (name != name_buf)
- free (name);
- file = 0;
- name = 0;
- }
- if (file && file != file_buf)
- free (file);
- if (name && name != name_buf)
- free (name);
- fclose (f);
+ return FcTrue;
}
-FcBool
-FcFileCacheUpdate (FcFileCache *cache,
- const FcChar8 *file,
- int id,
- const FcChar8 *name)
+static FcBool
+FcCacheWriteString (FILE *f, const FcChar8 *string)
{
- const FcChar8 *match;
- struct stat statb;
- FcBool ret;
-
- match = file;
- if (stat ((char *) file, &statb) < 0)
+ if (PUTC ('"', f) == EOF)
return FcFalse;
- ret = FcFileCacheAdd (cache, match, id,
- statb.st_mtime, name, FcTrue);
- if (ret)
- cache->updated = FcTrue;
- return ret;
+ if (!FcCacheWriteChars (f, string))
+ return FcFalse;
+ if (PUTC ('"', f) == EOF)
+ return FcFalse;
+ return FcTrue;
}
static FcBool
-FcFileCacheWriteString (FILE *f, const FcChar8 *string)
+FcCacheWritePath (FILE *f, const FcChar8 *dir, const FcChar8 *file)
{
- char c;
-
- if (putc ('"', f) == EOF)
+ if (PUTC ('"', f) == EOF)
return FcFalse;
- while ((c = *string++))
+ if (dir)
+ if (!FcCacheWriteChars (f, dir))
+ return FcFalse;
+#ifdef _WIN32
+ if (dir &&
+ dir[strlen((const char *) dir) - 1] != '/' &&
+ dir[strlen((const char *) dir) - 1] != '\\')
{
- switch (c) {
- case '"':
- case '\\':
- if (putc ('\\', f) == EOF)
- return FcFalse;
- /* fall through */
- default:
- if (putc (c, f) == EOF)
- return FcFalse;
- }
+ if (!FcCacheWriteChars (f, "\\"))
+ return FcFalse;
}
- if (putc ('"', f) == EOF)
+#else
+ if (dir && dir[strlen((const char *) dir) - 1] != '/')
+ if (PUTC ('/', f) == EOF)
+ return FcFalse;
+#endif
+ if (!FcCacheWriteChars (f, file))
+ return FcFalse;
+ if (PUTC ('"', f) == EOF)
return FcFalse;
return FcTrue;
}
static FcBool
-FcFileCacheWriteUlong (FILE *f, unsigned long t)
+FcCacheWriteUlong (FILE *f, unsigned long t)
{
int pow;
unsigned long temp, digit;
while (pow)
{
digit = temp / pow;
- if (putc ((char) digit + '0', f) == EOF)
+ if (PUTC ((char) digit + '0', f) == EOF)
return FcFalse;
temp = temp - pow * digit;
pow = pow / 10;
}
static FcBool
-FcFileCacheWriteInt (FILE *f, int i)
+FcCacheWriteInt (FILE *f, int i)
{
- return FcFileCacheWriteUlong (f, (unsigned long) i);
+ return FcCacheWriteUlong (f, (unsigned long) i);
}
static FcBool
-FcFileCacheWriteTime (FILE *f, time_t t)
+FcCacheWriteTime (FILE *f, time_t t)
{
- return FcFileCacheWriteUlong (f, (unsigned long) t);
+ return FcCacheWriteUlong (f, (unsigned long) t);
}
-FcBool
-FcFileCacheSave (FcFileCache *cache,
- const FcChar8 *cache_file)
+static FcChar8 *
+FcCacheReadString2 (int fd, FcChar8 *dest, int len)
{
- FcChar8 *lck;
- FcChar8 *tmp;
- FILE *f;
- int h;
- FcFileCacheEnt *c;
+ FcChar8 c;
+ FcBool escape;
+ int size;
+ int i;
- if (!cache->updated && cache->referenced == cache->entries)
- return FcTrue;
+ if (len == 0)
+ return FcFalse;
- lck = malloc (strlen ((char *) cache_file)*2 + 4);
- if (!lck)
- goto bail0;
- tmp = lck + strlen ((char *) cache_file) + 2;
- strcpy ((char *) lck, (char *) cache_file);
- strcat ((char *) lck, "L");
- strcpy ((char *) tmp, (char *) cache_file);
- strcat ((char *) tmp, "T");
- if (link ((char *) lck, (char *) cache_file) < 0 && errno != ENOENT)
- goto bail1;
- if (access ((char *) tmp, F_OK) == 0)
- goto bail2;
- f = fopen ((char *) tmp, "w");
- if (!f)
- goto bail2;
-
- for (h = 0; h < FC_FILE_CACHE_HASH_SIZE; h++)
+ size = len;
+ i = 0;
+ escape = FcFalse;
+ while (read (fd, &c, 1) == 1)
{
- for (c = cache->ents[h]; c; c = c->next)
+ if (!escape)
{
- if (!c->referenced)
+ switch (c) {
+ case '"':
+ c = '\0';
+ break;
+ case '\\':
+ escape = FcTrue;
continue;
- if (!FcFileCacheWriteString (f, c->file))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcFileCacheWriteInt (f, c->id))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcFileCacheWriteTime (f, c->time))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcFileCacheWriteString (f, c->name))
- goto bail4;
- if (putc ('\n', f) == EOF)
- goto bail4;
+ }
+ }
+ if (i == size)
+ {
+ dest[i++] = 0;
+ return dest;
}
+ dest[i++] = c;
+ if (c == '\0')
+ return dest;
+ escape = FcFalse;
}
+ return 0;
+}
- if (fclose (f) == EOF)
- goto bail3;
-
- if (rename ((char *) tmp, (char *) cache_file) < 0)
- goto bail3;
-
- unlink ((char *) lck);
- cache->updated = FcFalse;
+static FcBool
+FcCacheWriteString2 (int fd, const FcChar8 *chars)
+{
+ if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
+ return FcFalse;
return FcTrue;
-
-bail4:
- fclose (f);
-bail3:
- unlink ((char *) tmp);
-bail2:
- unlink ((char *) lck);
-bail1:
- free (lck);
-bail0:
- return FcFalse;
}
-FcBool
-FcFileCacheReadDir (FcFontSet *set, const FcChar8 *cache_file)
+static FcBool
+FcCacheFontSetAdd (FcFontSet *set,
+ FcStrSet *dirs,
+ const FcChar8 *dir,
+ int dir_len,
+ const FcChar8 *file,
+ const FcChar8 *name,
+ FcConfig *config)
{
- FcPattern *font;
- FILE *f;
- FcChar8 *path;
- FcChar8 *base;
- FcChar8 file_buf[8192], *file;
- int id;
- FcChar8 name_buf[8192], *name;
- FcBool ret = FcFalse;
+ FcChar8 path_buf[8192], *path;
+ int len;
+ FcBool ret = FcFalse;
+ FcPattern *font;
+ FcPattern *frozen;
- if (FcDebug () & FC_DBG_CACHE)
+ path = path_buf;
+ len = (dir_len + 1 + strlen ((const char *) file) + 1);
+ if (len > sizeof (path_buf))
{
- printf ("FcFileCacheReadDir cache_file \"%s\"\n", cache_file);
+ path = malloc (len); /* freed down below */
+ if (!path)
+ return FcFalse;
}
-
- f = fopen ((char *) cache_file, "r");
- if (!f)
+ strncpy ((char *) path, (const char *) dir, dir_len);
+#ifdef _WIN32
+ if (dir[dir_len - 1] != '/' && dir[dir_len - 1] != '\\' )
+ path[dir_len++] = '\\';
+#else
+ if (dir[dir_len - 1] != '/')
+ path[dir_len++] = '/';
+#endif
+ strcpy ((char *) path + dir_len, (const char *) file);
+ if (config && !FcConfigAcceptFilename (config, path))
+ ret = FcTrue;
+ else if (!FcStrCmp (name, FC_FONT_FILE_DIR))
{
- if (FcDebug () & FC_DBG_CACHE)
- {
- printf (" no cache file\n");
- }
- goto bail0;
+ if (FcDebug () & FC_DBG_CACHEV)
+ printf (" dir cache dir \"%s\"\n", path);
+ ret = FcStrSetAdd (dirs, path);
}
-
- base = (FcChar8 *) strrchr ((char *) cache_file, '/');
- if (!base)
- goto bail1;
- base++;
- path = malloc (base - cache_file + 8192 + 1);
- if (!path)
- goto bail1;
- memcpy (path, cache_file, base - cache_file);
- base = path + (base - cache_file);
-
- file = 0;
- name = 0;
- while ((file = FcFileCacheReadString (f, file_buf, sizeof (file_buf))) &&
- FcFileCacheReadInt (f, &id) &&
- (name = FcFileCacheReadString (f, name_buf, sizeof (name_buf))))
+ else if (!FcStrCmp (name, FC_FONT_FILE_INVALID))
+ {
+ ret = FcTrue;
+ }
+ else
{
font = FcNameParse (name);
if (font)
{
- strcpy (base, file);
+ FcChar8 *family;
+
if (FcDebug () & FC_DBG_CACHEV)
- {
printf (" dir cache file \"%s\"\n", file);
+ ret = FcPatternAddString (font, FC_FILE, path);
+ /*
+ * Make sure the pattern has the file name as well as
+ * already containing at least one family name.
+ */
+ if (ret &&
+ FcPatternGetString (font, FC_FAMILY, 0, &family) == FcResultMatch &&
+ (!config || FcConfigAcceptFont (config, font)))
+ {
+ frozen = FcPatternFreeze (font);
+ ret = (frozen != 0);
+ if (ret)
+ ret = FcFontSetAdd (set, frozen);
}
- FcPatternAddString (font, FC_FILE, path);
- if (!FcFontSetAdd (set, font))
- goto bail2;
+ FcPatternDestroy (font);
}
- if (file != file_buf)
- free (file);
- if (name != name_buf)
- free (name);
- file = name = 0;
- }
- if (FcDebug () & FC_DBG_CACHE)
- {
- printf (" cache loaded\n");
}
-
- ret = FcTrue;
-bail2:
- free (path);
- if (file && file != file_buf)
- free (file);
- if (name && name != name_buf)
- free (name);
-bail1:
- fclose (f);
-bail0:
+ if (path != path_buf) free (path);
return ret;
+
+}
+
+static unsigned int
+FcCacheHash (const FcChar8 *string, int len)
+{
+ unsigned int h = 0;
+ FcChar8 c;
+
+ while (len-- && (c = *string++))
+ h = (h << 1) ^ c;
+ return h;
}
+/*
+ * Verify the saved timestamp for a file
+ */
FcBool
-FcFileCacheWriteDir (FcFontSet *set, const FcChar8 *cache_file)
-{
- FcPattern *font;
- FILE *f;
- FcChar8 *name;
- const FcChar8 *file, *base;
- int n;
- int id;
- FcBool ret;
+FcGlobalCacheCheckTime (const FcChar8 *file, FcGlobalCacheInfo *info)
+{
+ struct stat statb;
- if (FcDebug () & FC_DBG_CACHE)
- printf ("FcFileCacheWriteDir cache_file \"%s\"\n", cache_file);
-
- f = fopen ((char *) cache_file, "w");
- if (!f)
+ if (stat ((char *) file, &statb) < 0)
{
if (FcDebug () & FC_DBG_CACHE)
- printf (" can't create \"%s\"\n", cache_file);
- goto bail0;
+ printf (" file %s missing\n", file);
+ return FcFalse;
}
- for (n = 0; n < set->nfont; n++)
+ if (statb.st_mtime != info->time)
{
- font = set->fonts[n];
- if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
- goto bail1;
- base = (FcChar8 *) strrchr ((char *) file, '/');
- if (base)
- base = base + 1;
- else
- base = file;
- if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
- goto bail1;
- if (FcDebug () & FC_DBG_CACHEV)
- printf (" write file \"%s\"\n", base);
- if (!FcFileCacheWriteString (f, base))
- goto bail1;
- if (putc (' ', f) == EOF)
- goto bail1;
- if (!FcFileCacheWriteInt (f, id))
- goto bail1;
- if (putc (' ', f) == EOF)
- goto bail1;
- name = FcNameUnparse (font);
- if (!name)
- goto bail1;
- ret = FcFileCacheWriteString (f, name);
- free (name);
- if (!ret)
- goto bail1;
- if (putc ('\n', f) == EOF)
- goto bail1;
+ if (FcDebug () & FC_DBG_CACHE)
+ printf (" timestamp mismatch (was %d is %d)\n",
+ (int) info->time, (int) statb.st_mtime);
+ return FcFalse;
}
- if (fclose (f) == EOF)
+ return FcTrue;
+}
+
+void
+FcGlobalCacheReferenced (FcGlobalCache *cache,
+ FcGlobalCacheInfo *info)
+{
+ if (!info->referenced)
+ {
+ info->referenced = FcTrue;
+ cache->referenced++;
+ if (FcDebug () & FC_DBG_CACHE_REF)
+ printf ("Reference %d %s\n", cache->referenced, info->file);
+ }
+}
+
+/*
+ * 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
+ */
+
+typedef struct _FcFilePathInfo {
+ const FcChar8 *dir;
+ int dir_len;
+ const FcChar8 *base;
+ unsigned int base_hash;
+} FcFilePathInfo;
+
+static FcFilePathInfo
+FcFilePathInfoGet (const FcChar8 *path)
+{
+ FcFilePathInfo i;
+ FcChar8 *slash;
+
+ slash = FcStrLastSlash (path);
+ if (slash)
+ {
+ i.dir = path;
+ i.dir_len = slash - path;
+ if (!i.dir_len)
+ i.dir_len = 1;
+ i.base = slash + 1;
+ }
+ else
+ {
+ i.dir = (const FcChar8 *) ".";
+ i.dir_len = 1;
+ i.base = path;
+ }
+ i.base_hash = FcCacheHash (i.base, -1);
+ return i;
+}
+
+FcGlobalCacheDir *
+FcGlobalCacheDirGet (FcGlobalCache *cache,
+ const FcChar8 *dir,
+ int len,
+ FcBool create_missing)
+{
+ unsigned int hash = FcCacheHash (dir, len);
+ FcGlobalCacheDir *d, **prev;
+
+ for (prev = &cache->ents[hash % FC_GLOBAL_CACHE_DIR_HASH_SIZE];
+ (d = *prev);
+ prev = &(*prev)->next)
+ {
+ if (d->info.hash == hash && d->len == len &&
+ !strncmp ((const char *) d->info.file,
+ (const char *) dir, len))
+ break;
+ }
+ if (!(d = *prev))
+ {
+ int i;
+ if (!create_missing)
+ return 0;
+ d = malloc (sizeof (FcGlobalCacheDir) + len + 1);
+ if (!d)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCacheDir) + len + 1);
+ 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;
+ }
+ return d;
+}
+
+static FcGlobalCacheInfo *
+FcGlobalCacheDirAdd (FcGlobalCache *cache,
+ const FcChar8 *dir,
+ time_t time,
+ FcBool replace,
+ FcBool create_missing)
+{
+ FcGlobalCacheDir *d;
+ FcFilePathInfo i;
+ FcGlobalCacheSubdir *subdir;
+ FcGlobalCacheDir *parent;
+
+ i = FcFilePathInfoGet (dir);
+ parent = FcGlobalCacheDirGet (cache, i.dir, i.dir_len, create_missing);
+ /*
+ * Tricky here -- directories containing fonts.cache-1 files
+ * need entries only when the parent doesn't have a cache file.
+ * That is, when the parent already exists in the cache, is
+ * referenced and has a "real" timestamp. The time of 0 is
+ * special and marks directories which got stuck in the
+ * global cache for this very reason. Yes, it could
+ * use a separate boolean field, and probably should.
+ */
+ if (!parent || (!create_missing &&
+ (!parent->info.referenced ||
+ (parent->info.time == 0))))
+ return 0;
+ /*
+ * Add this directory to the cache
+ */
+ d = FcGlobalCacheDirGet (cache, dir, strlen ((const char *) dir), FcTrue);
+ if (!d)
+ return 0;
+ d->info.time = time;
+ /*
+ * Add this directory to the subdirectory list of the parent
+ */
+ subdir = malloc (sizeof (FcGlobalCacheSubdir));
+ if (!subdir)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCacheSubdir));
+ subdir->ent = d;
+ subdir->next = parent->subdirs;
+ parent->subdirs = subdir;
+ return &d->info;
+}
+
+static void
+FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
+{
+ FcGlobalCacheFile *f, *next;
+ int h;
+ FcGlobalCacheSubdir *s, *nexts;
+
+ for (h = 0; h < FC_GLOBAL_CACHE_FILE_HASH_SIZE; h++)
+ for (f = d->ents[h]; f; f = next)
+ {
+ next = f->next;
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheFile) +
+ strlen ((char *) f->info.file) + 1 +
+ strlen ((char *) f->name) + 1);
+ free (f);
+ }
+ for (s = d->subdirs; s; s = nexts)
+ {
+ nexts = s->next;
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheSubdir));
+ free (s);
+ }
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir) + d->len + 1);
+ free (d);
+}
+
+/*
+ * If the parent is in the global cache and referenced, add
+ * an entry for 'dir' to the global cache. This is used
+ * for directories with fonts.cache files
+ */
+
+void
+FcGlobalCacheReferenceSubdir (FcGlobalCache *cache,
+ const FcChar8 *dir)
+{
+ FcGlobalCacheInfo *info;
+ info = FcGlobalCacheDirAdd (cache, dir, 0, FcFalse, FcFalse);
+ if (info && !info->referenced)
+ {
+ info->referenced = FcTrue;
+ cache->referenced++;
+ }
+}
+
+/*
+ * Check to see if the global cache contains valid data for 'dir'.
+ * If so, scan the global cache for files and directories in 'dir'.
+ * else, return False.
+ */
+FcBool
+FcGlobalCacheScanDir (FcFontSet *set,
+ FcStrSet *dirs,
+ FcGlobalCache *cache,
+ const FcChar8 *dir,
+ FcConfig *config)
+{
+ FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, dir,
+ strlen ((const char *) dir),
+ FcFalse);
+ FcGlobalCacheFile *f;
+ int h;
+ int dir_len;
+ FcGlobalCacheSubdir *subdir;
+ FcBool any_in_cache = FcFalse;
+
+ if (FcDebug() & FC_DBG_CACHE)
+ printf ("FcGlobalCacheScanDir %s\n", dir);
+
+ if (!d)
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("\tNo dir cache entry\n");
+ return FcFalse;
+ }
+
+ /*
+ * See if the timestamp recorded in the global cache
+ * matches the directory time, if not, return False
+ */
+ if (!FcGlobalCacheCheckTime (d->info.file, &d->info))
+ {
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("\tdir cache entry time mismatch\n");
+ return FcFalse;
+ }
+
+ /*
+ * Add files from 'dir' to the fontset
+ */
+ 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);
+ any_in_cache = FcTrue;
+ if (!FcCacheFontSetAdd (set, dirs, dir, dir_len,
+ f->info.file, f->name, config))
+ {
+ cache->broken = FcTrue;
+ return FcFalse;
+ }
+ FcGlobalCacheReferenced (cache, &f->info);
+ }
+ /*
+ * Add directories in 'dir' to 'dirs'
+ */
+ for (subdir = d->subdirs; subdir; subdir = subdir->next)
+ {
+ FcFilePathInfo info = FcFilePathInfoGet (subdir->ent->info.file);
+
+ any_in_cache = FcTrue;
+ if (!FcCacheFontSetAdd (set, dirs, dir, dir_len,
+ info.base, FC_FONT_FILE_DIR, config))
+ {
+ cache->broken = FcTrue;
+ return FcFalse;
+ }
+ FcGlobalCacheReferenced (cache, &subdir->ent->info);
+ }
+
+ FcGlobalCacheReferenced (cache, &d->info);
+
+ /*
+ * To recover from a bug in previous versions of fontconfig,
+ * return FcFalse if no entries in the cache were found
+ * for this directory. This will cause any empty directories
+ * to get rescanned every time fontconfig is initialized. This
+ * might get removed at some point when the older cache files are
+ * presumably fixed.
+ */
+ return any_in_cache;
+}
+
+/*
+ * Locate the cache entry for a particular file
+ */
+FcGlobalCacheFile *
+FcGlobalCacheFileGet (FcGlobalCache *cache,
+ const FcChar8 *file,
+ int id,
+ int *count)
+{
+ FcFilePathInfo i = FcFilePathInfoGet (file);
+ FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, i.dir,
+ i.dir_len, FcFalse);
+ FcGlobalCacheFile *f, *match = 0;
+ int max = -1;
+
+ if (!d)
+ return 0;
+ for (f = d->ents[i.base_hash % FC_GLOBAL_CACHE_FILE_HASH_SIZE]; f; f = f->next)
+ {
+ 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;
+ }
+ }
+ if (count)
+ *count = max + 1;
+ 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;
+ int size;
+
+ 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 (!replace)
+ return 0;
+
+ f = *prev;
+ if (f->info.referenced)
+ cache->referenced--;
+ *prev = f->next;
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheFile) +
+ strlen ((char *) f->info.file) + 1 +
+ strlen ((char *) f->name) + 1);
+ free (f);
+ }
+ size = (sizeof (FcGlobalCacheFile) +
+ strlen ((char *) i.base) + 1 +
+ strlen ((char *) name) + 1);
+ f = malloc (size);
+ if (!f)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, size);
+ 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;
+}
+
+FcGlobalCache *
+FcGlobalCacheCreate (void)
+{
+ FcGlobalCache *cache;
+ int h;
+
+ cache = malloc (sizeof (FcGlobalCache));
+ if (!cache)
+ return 0;
+ FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
+ for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
+ cache->ents[h] = 0;
+ cache->entries = 0;
+ cache->referenced = 0;
+ cache->updated = FcFalse;
+ cache->broken = FcFalse;
+ return cache;
+}
+
+void
+FcGlobalCacheDestroy (FcGlobalCache *cache)
+{
+ FcGlobalCacheDir *d, *next;
+ int h;
+
+ for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
+ {
+ for (d = cache->ents[h]; d; d = next)
+ {
+ next = d->next;
+ FcGlobalCacheDirDestroy (d);
+ }
+ }
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
+ free (cache);
+}
+
+/*
+ * Cache file syntax is quite simple:
+ *
+ * "file_name" id time "font_name" \n
+ */
+
+void
+FcGlobalCacheLoad (FcGlobalCache *cache,
+ const FcChar8 *cache_file)
+{
+ 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;
+
+ 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))))
+ {
+ 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, FcTrue);
+ 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)
+ free (file);
+ if (name != name_buf)
+ free (name);
+ file = 0;
+ name = 0;
+ }
+ if (file && file != file_buf)
+ free (file);
+ if (name && name != name_buf)
+ free (name);
+ fclose (f);
+}
+
+FcBool
+FcGlobalCacheUpdate (FcGlobalCache *cache,
+ const FcChar8 *file,
+ int id,
+ const FcChar8 *name)
+{
+ const FcChar8 *match;
+ struct stat statb;
+ FcGlobalCacheInfo *info;
+
+ match = file;
+
+ if (stat ((char *) file, &statb) < 0)
+ return FcFalse;
+ if (S_ISDIR (statb.st_mode))
+ info = FcGlobalCacheDirAdd (cache, file, statb.st_mtime,
+ FcTrue, 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;
+}
+
+FcBool
+FcGlobalCacheSave (FcGlobalCache *cache,
+ const FcChar8 *cache_file)
+{
+ FILE *f;
+ int dir_hash, file_hash;
+ FcGlobalCacheDir *dir;
+ FcGlobalCacheFile *file;
+ FcAtomic *atomic;
+
+ if (!cache->updated && cache->referenced == cache->entries)
+ return FcTrue;
+
+ if (cache->broken)
+ return FcFalse;
+
+#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)
goto bail0;
+ if (!FcAtomicLock (atomic))
+ goto bail1;
+ f = fopen ((char *) FcAtomicNewFile(atomic), "w");
+ if (!f)
+ goto bail2;
+
+ 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;
+ }
+ }
+ }
+ }
+
+ if (fclose (f) == EOF)
+ goto bail3;
- if (FcDebug () & FC_DBG_CACHE)
- printf (" cache written\n");
- return FcTrue;
+ if (!FcAtomicReplaceOrig (atomic))
+ goto bail3;
-bail1:
+ FcAtomicUnlock (atomic);
+ FcAtomicDestroy (atomic);
+
+ cache->updated = FcFalse;
+ return FcTrue;
+
+bail4:
fclose (f);
+bail3:
+ FcAtomicDeleteNew (atomic);
+bail2:
+ FcAtomicUnlock (atomic);
+bail1:
+ FcAtomicDestroy (atomic);
bail0:
- unlink ((char *) cache_file);
return FcFalse;
}
+
+/*
+ * Find the next presumably-mmapable offset after the current file
+ * pointer.
+ */
+static int
+FcCacheNextOffset(off_t w)
+{
+ if (w % PAGESIZE == 0)
+ return w;
+ else
+ return ((w / PAGESIZE)+1)*PAGESIZE;
+}
+
+/* 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)
+{
+ char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
+ char * candidate_arch;
+ off_t current_arch_start = 0;
+
+ /* skip arches that are not the current arch */
+ while (1)
+ {
+ long bs;
+
+ lseek (fd, current_arch_start, SEEK_SET);
+ if (FcCacheReadString2 (fd, candidate_arch_machine_name_count,
+ sizeof (candidate_arch_machine_name_count)) == 0)
+ break;
+ if (!strlen(candidate_arch_machine_name_count))
+ return -1;
+ bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16);
+ candidate_arch++; /* skip leading space */
+
+ if (strcmp (candidate_arch, arch)==0)
+ break;
+ current_arch_start += bs;
+ }
+
+ if (strcmp (candidate_arch, arch)!=0)
+ return -1;
+
+ return current_arch_start;
+}
+
+/* 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. */
+#define BUF_SIZE 8192
+
+static FcBool
+FcCacheMoveDown (int fd, off_t start)
+{
+ char * buf = malloc (BUF_SIZE);
+ char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
+ long bs;
+ int c, bytes_skipped;
+
+ if (!buf)
+ return FcFalse;
+
+ lseek (fd, start, SEEK_SET);
+ if (FcCacheReadString2 (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
+ {
+ lseek (fd, start+bs+bytes_skipped, SEEK_SET);
+ if ((c = read (fd, buf, BUF_SIZE)) <= 0)
+ break;
+ lseek (fd, start+bytes_skipped, SEEK_SET);
+ if (write (fd, buf, c) < 0)
+ goto bail;
+ bytes_skipped += c;
+ }
+ while (c > 0);
+ lseek (fd, start+bytes_skipped, SEEK_SET);
+
+ done:
+ free (buf);
+ return FcTrue;
+
+ bail:
+ free (buf);
+ return FcFalse;
+}
+
+FcBool
+FcDirCacheValid (const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ struct stat file_stat, dir_stat;
+
+ if (stat ((char *) dir, &dir_stat) < 0)
+ {
+ FcStrFree (cache_file);
+ return FcFalse;
+ }
+ if (stat ((char *) cache_file, &file_stat) < 0)
+ {
+ FcStrFree (cache_file);
+ 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)
+ return FcFalse;
+ return FcTrue;
+}
+
+static int
+FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
+ FcStrList *list, FcFontSet * set)
+{
+ DIR *d;
+ struct dirent *e;
+ int ret = 0;
+ FcChar8 *dir;
+ FcChar8 *file, *base;
+ FcStrSet *subdirs;
+ FcStrList *sublist;
+ struct stat statb;
+
+ /*
+ * Now scan all of the directories into separate databases
+ * and write out the results
+ */
+ while ((dir = FcStrListNext (list)))
+ {
+ /* 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);
+ 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;
+ }
+ d = opendir ((char *) dir);
+ if (!d)
+ {
+ FcStrSetDestroy (subdirs);
+ free (file);
+ continue;
+ }
+ while ((e = readdir (d)))
+ {
+ if (e->d_name[0] != '.' && strlen (e->d_name) < FC_MAX_FILE_LEN)
+ {
+ strcpy ((char *) base, (char *) e->d_name);
+ if (FcFileIsDir (file) && !FcStrSetAdd (subdirs, file))
+ ret++;
+ }
+ }
+ closedir (d);
+ if (!FcDirCacheValid (dir) || !FcDirCacheRead (set, dir))
+ {
+ if (FcDebug () & FC_DBG_FONTSET)
+ printf ("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);
+ }
+ FcStrListDone (list);
+ return ret;
+}
+
+FcFontSet *
+FcCacheRead (FcConfig *config, FcGlobalCache * cache)
+{
+ FcFontSet * s = FcFontSetCreate();
+ if (!s)
+ return 0;
+
+ if (force)
+ goto bail;
+
+ if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s))
+ goto bail;
+
+ return s;
+
+ bail:
+ FcFontSetDestroy (s);
+ return 0;
+}
+
+/* read serialized state from the cache file */
+FcBool
+FcDirCacheRead (FcFontSet * set, const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ int fd;
+ FcCache metadata;
+ void * current_dir_block;
+ char * current_arch_machine_name;
+ char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
+ off_t current_arch_start = 0;
+
+ if (force)
+ goto bail;
+ if (!cache_file)
+ goto bail;
+
+ current_arch_machine_name = FcCacheProduceMachineSignature();
+ fd = open(cache_file, O_RDONLY);
+ if (fd == -1)
+ goto bail;
+
+ current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
+ if (current_arch_start < 0)
+ goto bail1;
+
+ lseek (fd, current_arch_start, SEEK_SET);
+ if (FcCacheReadString2 (fd, candidate_arch_machine_name,
+ sizeof (candidate_arch_machine_name)) == 0)
+ goto bail1;
+
+ // sanity check for endianness issues
+ read(fd, &metadata, sizeof(FcCache));
+ if (metadata.magic != FC_CACHE_MAGIC)
+ goto bail1;
+
+ if (!metadata.count)
+ goto bail1;
+
+ off_t 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)
+ perror("");
+
+ if (!FcFontSetUnserialize (metadata, set, current_dir_block))
+ goto bail1;
+
+ close(fd);
+ free (cache_file);
+ return FcTrue;
+
+ bail1:
+ close(fd);
+ bail:
+ free (cache_file);
+ return FcFalse;
+}
+
+/* write serialized state to the cache file */
+FcBool
+FcDirCacheWrite (int bank, FcFontSet *set, const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ int fd, bytes_to_write, metadata_bytes;
+ FcCache metadata;
+ off_t current_arch_start = 0, truncate_to;
+ char * current_arch_machine_name, * header;
+ void * current_dir_block, *final_dir_block;
+
+ if (!cache_file)
+ goto bail;
+
+ FcFontSetNewBank();
+ bytes_to_write = FcFontSetNeededBytes (set);
+ metadata_bytes = FcCacheNextOffset (sizeof (FcCache));
+
+ if (!bytes_to_write)
+ {
+ unlink (cache_file);
+ free (cache_file);
+ return FcTrue;
+ }
+
+ current_dir_block = malloc (bytes_to_write);
+ memset (&metadata, 0, sizeof(FcCache));
+ metadata.count = bytes_to_write;
+ metadata.bank = bank;
+ if (!current_dir_block)
+ goto bail;
+ final_dir_block = FcFontSetDistributeBytes (&metadata, current_dir_block);
+
+ if ((char *)current_dir_block + bytes_to_write != final_dir_block)
+ goto bail;
+
+ if (!FcFontSetSerialize (bank, set))
+ goto bail;
+
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
+
+ fd = open(cache_file, O_RDWR | O_CREAT, 0666);
+ if (fd == -1)
+ goto bail;
+
+ current_arch_machine_name = FcCacheProduceMachineSignature ();
+ current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
+ if (current_arch_start < 0)
+ current_arch_start = FcCacheNextOffset (lseek(fd, 0, SEEK_END));
+
+ if (!FcCacheMoveDown(fd, current_arch_start))
+ goto bail1;
+
+ current_arch_start = lseek(fd, 0, SEEK_CUR);
+ if (ftruncate (fd, current_arch_start) == -1)
+ goto bail1;
+
+ /* now write the address of the next offset */
+ truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + metadata_bytes) + bytes_to_write) - current_arch_start;
+
+ header = malloc (10 + strlen (current_arch_machine_name));
+ sprintf (header, "%8x ", (int)truncate_to);
+ strcat (header, current_arch_machine_name);
+ if (!FcCacheWriteString2 (fd, header))
+ goto bail1;
+
+ metadata.magic = FC_CACHE_MAGIC;
+ write (fd, &metadata, sizeof(FcCache));
+ lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET);
+ write (fd, current_dir_block, bytes_to_write);
+
+ /* this actually serves to pad out the cache file, if needed */
+ if (ftruncate (fd, current_arch_start + truncate_to) == -1)
+ goto bail1;
+
+ close(fd);
+ return FcTrue;
+
+ bail1:
+ free (current_dir_block);
+ free (current_arch_machine_name);
+ bail:
+ unlink (cache_file);
+ free (cache_file);
+ return FcFalse;
+}
+
+static char *
+FcCacheProduceMachineSignature ()
+{
+ 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],
+ sizeof (char),
+ sizeof (char *),
+ sizeof (int),
+ sizeof (FcPattern),
+ sizeof (FcPatternEltPtr),
+ sizeof (struct _FcPatternElt *),
+ sizeof (FcPatternElt),
+ sizeof (FcObjectPtr),
+ sizeof (FcValueListPtr),
+ sizeof (FcValue),
+ sizeof (FcValueBinding),
+ sizeof (struct _FcValueList *),
+ sizeof (FcCharSet),
+ sizeof (FcCharLeaf **),
+ sizeof (FcChar16 *),
+ sizeof (FcChar16),
+ sizeof (FcCharLeaf),
+ sizeof (FcChar32),
+ sizeof (FcCache));
+
+ return buf;
+}
+
+/* if true, ignore the cache file */
+void
+FcCacheForce (FcBool f)
+{
+ force = f;
+}
+
+static int banks_ptr = 0, banks_alloc = 0;
+static int * bankId = 0;
+
+int
+FcCacheBankCount (void)
+{
+ return banks_ptr;
+}
+
+FcBool
+FcCacheHaveBank (int bank)
+{
+ int i;
+
+ if (bank < FC_BANK_FIRST)
+ return FcTrue;
+
+ for (i = 0; i < banks_ptr; i++)
+ if (bankId[i] == bank)
+ return FcTrue;
+
+ return FcFalse;
+}
+
+int
+FcCacheBankToIndex (int bank)
+{
+ static int lastBank = FC_BANK_DYNAMIC, lastIndex = -1;
+ int i;
+ int * b;
+
+ if (bank == lastBank)
+ return lastIndex;
+
+ for (i = 0; i < banks_ptr; i++)
+ if (bankId[i] == bank)
+ return i;
+
+ if (banks_ptr >= banks_alloc)
+ {
+ b = realloc (bankId, (banks_alloc + 4) * sizeof(int));
+ if (!b)
+ return -1;
+
+ bankId = b;
+ banks_alloc += 4;
+ }
+
+ i = banks_ptr++;
+ bankId[i] = bank;
+ return i;
+}
git.wh0rd.org / fontconfig.git / blobdiff