[tracker] tracker-extract: XMP: Fix strings that go like "n1/n2" that are xsd:double

[Philip Van Hoof <pvanhoof src gnome org>]

commit 292b8f5301293f864916f284741b9c3b8601919a
Author: Philip Van Hoof <philip codeminded be>
Date:   Fri May 21 15:08:48 2010 +0200

    tracker-extract: XMP: Fix strings that go like "n1/n2" that are xsd:double

 src/libtracker-extract/tracker-xmp.c |   28 ++++++++++++++++++++++++----
 1 files changed, 24 insertions(+), 4 deletions(-)
---
diff --git a/src/libtracker-extract/tracker-xmp.c b/src/libtracker-extract/tracker-xmp.c
index 0a58b45..0d4e94e 100644
--- a/src/libtracker-extract/tracker-xmp.c
+++ b/src/libtracker-extract/tracker-xmp.c
@@ -152,6 +152,26 @@ iterate_alt_text (XmpPtr          xmp,
 	xmp_iterator_free (iter);
 }
 
+static gchar *
+div_str_dup (const gchar *value)
+{
+	gchar *ret;
+	gchar *ptr = strchr (value, '/');
+	if (ptr) {
+		gchar *cpy = g_strdup (value);
+		gint a, b;
+		cpy [ptr - value] = '\0';
+		a = atoi (cpy);
+		b = atoi (cpy + (ptr - value) + 1);
+		ret = g_strdup_printf ("%G", ((gdouble)((gdouble) a / (gdouble) b)));
+		g_free (cpy);
+	} else {
+		ret = g_strdup (value);
+	}
+
+	return ret;
+}
+
 /* We have a simple element, but need to iterate over the qualifiers */
 static void
 iterate_simple_qual (XmpPtr          xmp,
@@ -290,13 +310,13 @@ iterate_simple (const gchar    *uri,
 			   tracker_statement_list_insert (metadata, uri,
 			   "Image:ExposureProgram", value);*/
 		} else if (!data->exposure_time && g_ascii_strcasecmp (name, "ExposureTime") == 0) {
-			data->exposure_time = g_strdup (value);
+			data->exposure_time = div_str_dup (value);
 		} else if (!data->fnumber && g_ascii_strcasecmp (name, "FNumber") == 0) {
-			data->fnumber = g_strdup (value);
+			data->fnumber = div_str_dup (value);
 		} else if (!data->focal_length && g_ascii_strcasecmp (name, "FocalLength") == 0) {
-			data->focal_length = g_strdup (value);
+			data->focal_length = div_str_dup (value);
 		} else if (!data->iso_speed_ratings && g_ascii_strcasecmp (name, "ISOSpeedRatings") == 0) {
-			data->iso_speed_ratings = g_strdup (value);
+			data->iso_speed_ratings = div_str_dup (value);
 		} else if (!data->white_balance && g_ascii_strcasecmp (name, "WhiteBalance") == 0) {
 			data->white_balance = g_strdup (fix_white_balance (value));
 		} else if (!data->copyright && g_ascii_strcasecmp (name, "Copyright") == 0) {