Wed Apr 13 18:16:14 2005 John Ellis <johne@verizon.net>

[geeqie.git] / src / cache.c

diff --git a/src/cache.c b/src/cache.c
index ef983ab..e2bb094 100644 (file)
--- a/src/cache.c
+++ b/src/cache.c
@@ -27,6 +27,7 @@
  * SIMcache
  * #coment
  * Dimensions=[<width> x <height>]
+ * Date=[<value in time_t format, or -1 if no embedded date>]
  * Checksum=[<value>]
  * MD5sum=[<32 character ascii text digest>]
  * SimilarityGrid[32 x 32]=<3072 bytes of data (1024 pixels in RGB format, 1 pixel is 24bits)>
@@ -51,8 +52,7 @@ CacheData *cache_sim_data_new(void)
        CacheData *cd;
 
        cd = g_new0(CacheData, 1);
-       cd->dimensions = FALSE;
-       cd->similarity = FALSE;
+       cd->date = -1;
 
        return cd;
 }
@@ -81,6 +81,15 @@ static gint cache_sim_write_dimensions(FILE *f, CacheData *cd)
        return TRUE;
 }
 
+static gint cache_sim_write_date(FILE *f, CacheData *cd)
+{
+       if (!f || !cd || !cd->have_date) return FALSE;
+
+       fprintf(f, "Date=[%ld]\n", cd->date);
+
+       return TRUE;
+}
+
 static gint cache_sim_write_checksum(FILE *f, CacheData *cd)
 {
        if (!f || !cd || !cd->have_checksum) return FALSE;
@@ -157,6 +166,7 @@ gint cache_sim_data_save(CacheData *cd)
 
        fprintf(f, "SIMcache\n#%s %s\n", PACKAGE, VERSION);
        cache_sim_write_dimensions(f, cd);
+       cache_sim_write_date(f, cd);
        cache_sim_write_checksum(f, cd);
        cache_sim_write_md5sum(f, cd);
        cache_sim_write_similarity(f, cd);
@@ -234,6 +244,46 @@ static gint cache_sim_read_dimensions(FILE *f, char *buf, int s, CacheData *cd)
        return FALSE;
 }
 
+static gint cache_sim_read_date(FILE *f, char *buf, int s, CacheData *cd)
+{
+       if (!f || !buf || !cd) return FALSE;
+
+       if (s < 4 || strncmp("Date", buf, 4) != 0) return FALSE;
+
+       if (fseek(f, - s, SEEK_CUR) == 0)
+               {
+               char b;
+               char buf[1024];
+               gint p = 0;
+
+               b = 'X';
+               while (b != '[')
+                       {
+                       if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
+                       }
+               while (b != ']' && p < 1023)
+                       {
+                       if (fread(&b, sizeof(b), 1, f) != 1) return FALSE;
+                       buf[p] = b;
+                       p++;
+                       }
+
+               while (b != '\n')
+                       {
+                       if (fread(&b, sizeof(b), 1, f) != 1) break;
+                       }
+
+               buf[p] = '\0';
+               cd->date = strtol(buf, NULL, 10);
+
+               cd->have_date = TRUE;
+
+               return TRUE;
+               }
+
+       return FALSE;
+}
+
 static gint cache_sim_read_checksum(FILE *f, char *buf, int s, CacheData *cd)
 {
        if (!f || !buf || !cd) return FALSE;
@@ -414,6 +464,7 @@ CacheData *cache_sim_data_load(const gchar *path)
                        {
                        if (!cache_sim_read_comment(f, buf, s, cd) &&
                            !cache_sim_read_dimensions(f, buf, s, cd) &&
+                           !cache_sim_read_date(f, buf, s, cd) &&
                            !cache_sim_read_checksum(f, buf, s, cd) &&
                            !cache_sim_read_md5sum(f, buf, s, cd) &&
                            !cache_sim_read_similarity(f, buf, s, cd))
@@ -449,6 +500,14 @@ void cache_sim_data_set_dimensions(CacheData *cd, gint w, gint h)
        cd->dimensions = TRUE;
 }
 
+void cache_sim_data_set_date(CacheData *cd, time_t date)
+{
+       if (!cd) return;
+
+       cd->date = date;
+       cd->have_date = TRUE;
+}
+
 void cache_sim_data_set_checksum(CacheData *cd, long checksum)
 {
        if (!cd) return;