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author | Keith Packard <keithp@neko.keithp.com> | 2006-08-31 09:42:49 -0700 |
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committer | Keith Packard <keithp@neko.keithp.com> | 2006-08-31 09:42:49 -0700 |
commit | d8ab9e6c42cb3513a6623df0c2866e1ebbd96485 (patch) | |
tree | e7beaf2ae617939678491bf3d2b83fac9bbe398d /fc-cache | |
parent | e9a564e2cd3cb40109a1133dbbcee9f938f141b3 (diff) | |
download | fontconfig-d8ab9e6c42cb3513a6623df0c2866e1ebbd96485.tar.gz |
Automatically remove invalid cache files.
Cache files for missing or more recently modified directories are
automatically removed at the end of every fc-cache run.
Diffstat (limited to 'fc-cache')
-rw-r--r-- | fc-cache/Makefile.am | 2 | ||||
-rw-r--r-- | fc-cache/fc-cache.c | 130 |
2 files changed, 130 insertions, 2 deletions
diff --git a/fc-cache/Makefile.am b/fc-cache/Makefile.am index 8d602b7..3700c4a 100644 --- a/fc-cache/Makefile.am +++ b/fc-cache/Makefile.am @@ -35,7 +35,7 @@ install-data-local: uninstall-local: -$(RM) -rf "$(DESTDIR)$(pkgcachedir)" -INCLUDES=-I${top_srcdir} $(FREETYPE_CFLAGS) +INCLUDES=-I${top_srcdir} -I${top_srcdir}/src $(FREETYPE_CFLAGS) bin_PROGRAMS=fc-cache diff --git a/fc-cache/fc-cache.c b/fc-cache/fc-cache.c index 9df90cc..cf4ea6c 100644 --- a/fc-cache/fc-cache.c +++ b/fc-cache/fc-cache.c @@ -31,13 +31,15 @@ #define HAVE_GETOPT 1 #endif -#include <fontconfig/fontconfig.h> +#include "fcint.h" #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> #include <errno.h> +#include <fcntl.h> +#include <dirent.h> #if defined (_WIN32) #define STRICT @@ -46,6 +48,10 @@ #undef STRICT #endif +#ifndef O_BINARY +#define O_BINARY 0 +#endif + #ifndef HAVE_GETOPT #define HAVE_GETOPT 0 #endif @@ -266,6 +272,126 @@ scanDirs (FcStrList *list, FcConfig *config, char *program, FcBool force, FcBool return ret; } +FcCache * +FcCacheFileMap (const FcChar8 *file, struct stat *file_stat) +{ + FcCache *cache; + int fd; + + fd = open (file, O_RDONLY | O_BINARY); + if (fd < 0) + return NULL; + if (fstat (fd, file_stat) < 0) { + close (fd); + return NULL; + } + if (FcDirCacheLoad (fd, file_stat->st_size, &cache)) { + close (fd); + return cache; + } + close (fd); + return NULL; +} + +static FcBool +cleanCacheDirectory (FcConfig *config, FcChar8 *dir, FcBool verbose) +{ + DIR *d; + struct dirent *ent; + char *dir_base; + FcBool ret = FcTrue; + FcBool remove; + FcCache *cache; + struct stat file_stat; + struct stat target_stat; + + dir_base = FcStrPlus (dir, "/"); + if (access ((char *) dir, W_OK|X_OK) != 0) + { + if (verbose) + printf ("%s: skipping unwritable cache directory\n", dir); + return FcTrue; + } + d = opendir (dir); + if (!d) + { + perror (dir); + return FcFalse; + } + while ((ent = readdir (d))) + { + FcChar8 *file_name; + FcChar8 *target_dir; + + if (ent->d_name[0] == '.') + continue; + file_name = FcStrPlus (dir_base, ent->d_name); + if (!file_name) + { + fprintf (stderr, "%s: allocation failure\n", dir); + ret = FcFalse; + break; + } + cache = FcCacheFileMap (file_name, &file_stat); + if (!cache) + { + fprintf (stderr, "%s: invalid cache file: %s\n", dir, ent->d_name); + FcStrFree (file_name); + ret = FcFalse; + continue; + } + target_dir = FcCacheDir (cache); + remove = FcFalse; + if (stat (target_dir, &target_stat) < 0) + { + if (verbose) + printf ("%s: %s: missing directory: %s \n", + dir, ent->d_name, target_dir); + remove = FcTrue; + } + else if (target_stat.st_mtime > file_stat.st_mtime) + { + if (verbose) + printf ("%s: %s: cache outdated: %s\n", + dir, ent->d_name, target_dir); + remove = FcTrue; + } + if (remove) + { + if (unlink (file_name) < 0) + { + perror (file_name); + ret = FcFalse; + } + } + FcStrFree (file_name); + } + + closedir (d); + return ret; +} + +static FcBool +cleanCacheDirectories (FcConfig *config, FcBool verbose) +{ + FcStrList *cache_dirs = FcConfigGetCacheDirs (config); + FcChar8 *cache_dir; + FcBool ret = FcTrue; + + if (!cache_dirs) + return FcFalse; + while ((cache_dir = FcStrListNext (cache_dirs))) + { + if (!cleanCacheDirectory (config, cache_dir, verbose)) + { + ret = FcFalse; + break; + } + } + FcStrListDone (cache_dirs); + return ret; +} + int main (int argc, char **argv) { @@ -356,6 +482,8 @@ main (int argc, char **argv) FcStrSetDestroy (processed_dirs); + cleanCacheDirectories (config, verbose); + /* * Now we need to sleep a second (or two, to be extra sure), to make * sure that timestamps for changes after this run of fc-cache are later |