fc-cache: add a --root option

[fontconfig.git] / fc-cache / fc-cache.c

diff --git a/fc-cache/fc-cache.c b/fc-cache/fc-cache.c
index 98039f77ff778aaa1fd583bf5e066b42c195b0bf..59a24bbb324e5c98dfc1e1de3a686125395ff055 100644 (file)
--- a/fc-cache/fc-cache.c
+++ b/fc-cache/fc-cache.c
@@ -69,6 +69,7 @@
 const struct option longopts[] = {
     {"force", 0, 0, 'f'},
     {"really-force", 0, 0, 'r'},
+    {"root", 1, 0, 'R'},
     {"system-only", 0, 0, 's'},
     {"version", 0, 0, 'V'},
     {"verbose", 0, 0, 'v'},
@@ -87,10 +88,10 @@ usage (char *program, int error)
 {
     FILE *file = error ? stderr : stdout;
 #if HAVE_GETOPT_LONG
-    fprintf (file, "usage: %s [-frsvVh] [--force|--really-force] [--system-only] [--verbose] [--version] [--help] [dirs]\n",
+    fprintf (file, "usage: %s [-frRsvVh] [--force|--really-force] [--root <root>] [--system-only] [--verbose] [--version] [--help] [dirs]\n",
             program);
 #else
-    fprintf (file, "usage: %s [-frsvVh] [dirs]\n",
+    fprintf (file, "usage: %s [-frRsvVh] [dirs]\n",
             program);
 #endif
     fprintf (file, "Build font information caches in [dirs]\n"
@@ -99,6 +100,7 @@ usage (char *program, int error)
 #if HAVE_GETOPT_LONG
     fprintf (file, "  -f, --force          scan directories with apparently valid caches\n");
     fprintf (file, "  -r, --really-force   erase all existing caches, then rescan\n");
+    fprintf (file, "  -R, --root <root>    change to <root> before loading files\n");
     fprintf (file, "  -s, --system-only    scan system-wide directories only\n");
     fprintf (file, "  -v, --verbose        display status information while busy\n");
     fprintf (file, "  -V, --version        display font config version and exit\n");
@@ -106,6 +108,7 @@ usage (char *program, int error)
 #else
     fprintf (file, "  -f         (force)   scan directories with apparently valid caches\n");
     fprintf (file, "  -r,   (really force) erase all existing caches, then rescan\n");
+    fprintf (file, "  -R <root>  (root)    change to <root> before loading files\n");
     fprintf (file, "  -s         (system)  scan system-wide directories only\n");
     fprintf (file, "  -v         (verbose) display status information while busy\n");
     fprintf (file, "  -V         (version) display font config version and exit\n");
@@ -154,7 +157,7 @@ scanDirs (FcStrList *list, FcConfig *config, FcBool force, FcBool really_force,
            continue;
        }
 
-       if (stat ((char *) dir, &statb) == -1)
+       if (FcStat (config, dir, &statb) == -1)
        {
            switch (errno) {
            case ENOENT:
@@ -253,25 +256,34 @@ cleanCacheDirectory (FcConfig *config, FcChar8 *dir, FcBool verbose)
 {
     DIR                *d;
     struct dirent *ent;
+    FcChar8    *fullDir;
+    FcChar8    *checkDir;
     FcBool     ret = FcTrue;
     FcBool     remove;
     FcCache    *cache;
     struct stat        target_stat;
 
-    if (access ((char *) dir, W_OK) != 0)
+    fullDir = FcConfigGetRootPlus (config, dir);
+    if (fullDir)
+       checkDir = fullDir;
+    else
+       checkDir = dir;
+
+    if (access ((char *) checkDir, W_OK) != 0)
     {
        if (verbose)
            printf ("%s: not cleaning %s cache directory\n", dir,
                    access ((char *) dir, F_OK) == 0 ? "unwritable" : "non-existent");
-       return FcTrue;
+       goto done;
     }
     if (verbose)
        printf ("%s: cleaning cache directory\n", dir);
-    d = opendir ((char *) dir);
+    d = opendir ((char *) checkDir);
     if (!d)
     {
        perror ((char *) dir);
-       return FcFalse;
+       ret = FcFalse;
+       goto done;
     }
     while ((ent = readdir (d)))
     {
@@ -294,7 +306,7 @@ cleanCacheDirectory (FcConfig *config, FcChar8 *dir, FcBool verbose)
            break;
        }
        remove = FcFalse;
-       cache = FcDirCacheLoadFile (file_name, NULL);
+       cache = FcDirCacheLoadFile2 (file_name, config, NULL);
        if (!cache)
        {
            if (verbose)
@@ -304,7 +316,7 @@ cleanCacheDirectory (FcConfig *config, FcChar8 *dir, FcBool verbose)
        else
        {
            target_dir = FcCacheDir (cache);
-           if (stat ((char *) target_dir, &target_stat) < 0)
+           if (FcStat (config, target_dir, &target_stat) < 0)
            {
                if (verbose)
                    printf ("%s: %s: missing directory: %s \n",
@@ -314,17 +326,25 @@ cleanCacheDirectory (FcConfig *config, FcChar8 *dir, FcBool verbose)
        }
        if (remove)
        {
-           if (unlink ((char *) file_name) < 0)
+           FcChar8 *unlink_file = FcConfigGetRootPlus (config, file_name);
+           if (!unlink_file)
+               unlink_file = file_name;
+           if (unlink ((char *) unlink_file) < 0)
            {
-               perror ((char *) file_name);
+               perror ((char *) unlink_file);
                ret = FcFalse;
            }
+           if (unlink_file != file_name)
+               FcStrFree (unlink_file);
        }
        FcDirCacheUnload (cache);
         FcStrFree (file_name);
     }
     
     closedir (d);
+ done:
+    if (fullDir)
+       FcStrFree (fullDir);
     return ret;
 }
 
@@ -359,6 +379,7 @@ main (int argc, char **argv)
     FcBool     really_force = FcFalse;
     FcBool     systemOnly = FcFalse;
     FcConfig   *config;
+    const char *rootDir;
     int                i;
     int                changed;
     int                ret;
@@ -366,9 +387,9 @@ main (int argc, char **argv)
     int                c;
 
 #if HAVE_GETOPT_LONG
-    while ((c = getopt_long (argc, argv, "frsVvh", longopts, NULL)) != -1)
+    while ((c = getopt_long (argc, argv, "frR:sVvh", longopts, NULL)) != -1)
 #else
-    while ((c = getopt (argc, argv, "frsVvh")) != -1)
+    while ((c = getopt (argc, argv, "frR:sVvh")) != -1)
 #endif
     {
        switch (c) {
@@ -378,6 +399,9 @@ main (int argc, char **argv)
        case 'f':
            force = FcTrue;
            break;
+       case 'R':
+           rootDir = optarg;
+           break;
        case 's':
            systemOnly = FcTrue;
            break;
@@ -408,6 +432,7 @@ main (int argc, char **argv)
        return 1;
     }
     FcConfigSetCurrent (config);
+    FcConfigSetRoot (config, (const FcChar8 *) rootDir);
 
     if (argv[i])
     {