done

3 files changed, 129 insertions, 3 deletions

diff --git a/src/fs/fs_file_information.c b/src/fs/fs_file_information.c
index d9acc9595..c04c5a56e 100644
--- a/src/fs/fs_file_information.c
+++ b/src/fs/fs_file_information.c
@@ -36,6 +36,74 @@
 
 
 /**
+ * Add meta data that libextractor finds to our meta data
+ * container.
+ *
+ * @param cls closure, our meta data container
+ * @param plugin_name name of the plugin that produced this value;
+ *        special values can be used (i.e. '<zlib>' for zlib being
+ *        used in the main libextractor library and yielding
+ *        meta data).
+ * @param type libextractor-type describing the meta data
+ * @param format basic format information about data
+ * @param data_mime_type mime-type of data (not of the original file);
+ *        can be NULL (if mime-type is not known)
+ * @param data actual meta-data found
+ * @param data_len number of bytes in data
+ * @return always 0 to continue extracting
+ */
+static int
+add_to_md(void *cls,
+          const char *plugin_name,
+          enum EXTRACTOR_MetaType type,
+          enum EXTRACTOR_MetaFormat format,
+          const char *data_mime_type,
+          const char *data,
+          size_t data_len)
+{
+  struct GNUNET_CONTAINER_MetaData *md = cls;
+  (void) GNUNET_CONTAINER_meta_data_insert (md,
+                                            plugin_name,
+                                            type,
+                                            format,
+                                            data_mime_type,
+                                            data,
+                                            data_len);
+  return 0;
+}
+
+
+/**
+ * Extract meta-data from a file.
+ *
+ * @return GNUNET_SYSERR on error, otherwise the number
+ *   of meta-data items obtained
+ */
+int
+GNUNET_FS_meta_data_extract_from_file (struct GNUNET_CONTAINER_MetaData
+                                       *md, const char *filename,
+                                       struct EXTRACTOR_PluginList *
+                                       extractors)
+{
+  int old;
+
+  if (filename == NULL)
+    return GNUNET_SYSERR;
+  if (extractors == NULL)
+    return 0;
+  old = GNUNET_CONTAINER_meta_data_iterate (md, NULL, NULL);
+  GNUNET_assert (old >= 0);
+  EXTRACTOR_extract (extractors, 
+                     filename,
+                     NULL, 0,
+                     &add_to_md,
+                     md);
+  return (GNUNET_CONTAINER_meta_data_iterate (md, NULL, NULL) - old);
+}
+
+
+
+/**
  * Obtain the name under which this file information
  * structure is stored on disk.  Only works for top-level
  * file information structures.
@@ -350,9 +418,9 @@ dir_scan_cb (void *cls,
   else
     {
       meta = GNUNET_CONTAINER_meta_data_create ();
-      GNUNET_CONTAINER_meta_data_extract_from_file (meta,
-                                                    filename,
-                                                    dsc->extractors);
+      GNUNET_FS_meta_data_extract_from_file (meta,
+                                             filename,
+                                             dsc->extractors);
       // FIXME: remove path from filename in metadata!
       keywords = GNUNET_FS_uri_ksk_create_from_meta_data (meta);
       ksk_uri = GNUNET_FS_uri_ksk_canonicalize (keywords);
diff --git a/src/fs/test_fs_file_information.c b/src/fs/test_fs_file_information.c
index c5b4ec997..2d66d5185 100644
--- a/src/fs/test_fs_file_information.c
+++ b/src/fs/test_fs_file_information.c
@@ -155,6 +155,62 @@ run (void *cls,
 }
 
 
+static int
+testThumbnail ()
+{
+  struct GNUNET_CONTAINER_MetaData *m;
+  struct GNUNET_CONTAINER_MetaData *d;
+  struct EXTRACTOR_PluginList *ex;
+  unsigned char *thumb;
+  size_t size;
+  char *date;
+
+  ex = EXTRACTOR_plugin_add_config (NULL, "thumbnailgtk", EXTRACTOR_OPTION_DEFAULT_POLICY);
+  if (ex == NULL)
+    {
+      fprintf (stderr,
+               "Test incomplete, have no GTK thumbnail extractor available.\n");
+      return 0;                 /* can not test, no thumbnailer */
+    }
+  ex = EXTRACTOR_plugin_add_config (ex, "mime", EXTRACTOR_OPTION_DEFAULT_POLICY);
+  m = GNUNET_CONTAINER_meta_data_create ();
+  if (3 != GNUNET_FS_meta_data_extract_from_file (m,
+                                                  "test_fs_file_information_meta_data_image.jpg",
+                                                  ex))
+    {
+      GNUNET_break (0);
+      EXTRACTOR_plugin_remove_all (ex);
+      GNUNET_CONTAINER_meta_data_destroy (m);
+      return 1;
+    }
+  EXTRACTOR_plugin_remove_all (ex);
+  d = GNUNET_CONTAINER_meta_data_duplicate (m);
+  GNUNET_CONTAINER_meta_data_destroy (m);
+  thumb = NULL;
+  size = GNUNET_CONTAINER_meta_data_get_thumbnail (d, &thumb);
+  if (size == 0)
+    {
+      GNUNET_break (0);
+      GNUNET_CONTAINER_meta_data_destroy (d);
+      return 1;
+    }
+  GNUNET_free (thumb);
+  GNUNET_CONTAINER_meta_data_add_publication_date (d);
+  date = GNUNET_CONTAINER_meta_data_get_by_type (d,
+                                                 EXTRACTOR_METATYPE_PUBLICATION_DATE);
+  if (date == NULL)
+    {
+      GNUNET_break (0);
+      GNUNET_CONTAINER_meta_data_destroy (d);
+      return 1;
+    }
+  GNUNET_free (date);
+  GNUNET_CONTAINER_meta_data_destroy (d);
+  return 0;
+}
+
+
+
 int
 main (int argc, char *argv[])
 {
@@ -178,6 +234,8 @@ main (int argc, char *argv[])
                     "WARNING",
 #endif
                     NULL);
+  if (0 != testThumbnail ())
+    return 1;
   GNUNET_PROGRAM_run ((sizeof (argvx) / sizeof (char *)) - 1,
                       argvx, "test-fs-file_information",
                       "nohelp", options, &run, NULL);
diff --git a/src/fs/test_fs_file_information_meta_data_image.jpg b/src/fs/test_fs_file_information_meta_data_image.jpg
new file mode 100644
index 000000000..3d1ba3307
--- /dev/null
+++ b/src/fs/test_fs_file_information_meta_data_image.jpg