X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=libdocument%2Fev-document-factory.c;h=a920be60bcfe06e2a051866700212b29160a7639;hb=5e55b6b5e74175b5638337616b84527fb8286908;hp=1bc67ef6f667a0441c4dcda3b7f95ad71493d3e6;hpb=e912e532fd67211aa87ac79414efb30f30a00fab;p=evince.git

diff --git a/libdocument/ev-document-factory.c b/libdocument/ev-document-factory.c
index 1bc67ef6..a920be60 100644
--- a/libdocument/ev-document-factory.c
+++ b/libdocument/ev-document-factory.c
@@ -23,6 +23,7 @@
 #endif
 
 #include <string.h>
+
 #include <gio/gio.h>
 #include <glib/gstdio.h>
 #include <glib/gi18n.h>
@@ -103,64 +104,111 @@ get_compression_from_mime_type (const gchar *mime_type)
 	return EV_COMPRESSION_NONE;
 }
 
-static EvDocument *
-get_document_from_uri (const char        *uri,
-		       gboolean           slow,
-		       EvCompressionType *compression,
-		       GError           **error)
+static gchar *
+get_mime_type_from_uri (const gchar *uri, GError **error)
 {
-	EvDocument *document = NULL;
-	GFile *file;
+	GFile     *file;
 	GFileInfo *file_info;
-	const gchar *mime_type;
-
-	*compression = EV_COMPRESSION_NONE;
+	gchar     *mime_type;
 
 	file = g_file_new_for_uri (uri);
 	file_info = g_file_query_info (file,
 				       G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
-				       0, NULL, NULL);
+				       0, NULL, error);
 	g_object_unref (file);
 
-	if (file_info == NULL) {
-		g_set_error (error,
-			     EV_DOCUMENT_ERROR,
-			     0,
-			     _("Failed to get info for document"));			
+	if (file_info == NULL)
+		return NULL;
+
+	mime_type = g_strdup (g_file_info_get_content_type (file_info));
+	g_object_unref (file_info);
+
+	return mime_type;
+}
+
+static gchar *
+get_mime_type_from_data (const gchar *uri, GError **error)
+{
+	GFile            *file;
+	GFileInputStream *input_stream;
+	gssize            size_read;
+	guchar            buffer[1024];
+
+	file = g_file_new_for_uri (uri);
+	
+	input_stream = g_file_read (file, NULL, error);
+	if (!input_stream) {
+		g_object_unref (file);
 		return NULL;
 	}
-	mime_type = g_file_info_get_content_type (file_info);
+
+	size_read = g_input_stream_read (G_INPUT_STREAM (input_stream),
+					 buffer, 1024, NULL, NULL);
+	g_input_stream_close (G_INPUT_STREAM (input_stream), NULL, error);
+
+	g_object_unref (file);
+
+	if (size_read == -1)
+		return NULL;
+
+	return g_content_type_guess (NULL, /* no filename */
+				     buffer, 1024,
+				     NULL);
+}
+
+static EvDocument *
+get_document_from_uri (const char        *uri,
+		       gboolean           slow,
+		       EvCompressionType *compression,
+		       GError           **error)
+{
+	EvDocument *document = NULL;
+	gchar      *mime_type = NULL;
+
+	*compression = EV_COMPRESSION_NONE;
+
+	mime_type = slow ?
+		get_mime_type_from_data (uri, error) :
+		get_mime_type_from_uri (uri, error);
 
 	if (mime_type == NULL) {
-		g_set_error (error,
-			     EV_DOCUMENT_ERROR,	
-    			     0,
-			     _("Unknown MIME Type"));
-		g_object_unref (file_info);
+		g_free (mime_type);
+
+		if (*error == NULL) {
+			g_set_error (error,
+				     EV_DOCUMENT_ERROR,
+				     0,
+				     _("Unknown MIME Type"));
+		}
+		
 		return NULL;
 	}
 
+	document = ev_backends_manager_get_document (mime_type);
+	
 #ifdef ENABLE_PIXBUF
-	if (mime_type_supported_by_gdk_pixbuf (mime_type))
+	if (!document && mime_type_supported_by_gdk_pixbuf (mime_type))
 		document = ev_backends_manager_get_document ("image/*");
-	else
-		document = ev_backends_manager_get_document (mime_type);
-#else
-	document = ev_backends_manager_get_document (mime_type);
 #endif /* ENABLE_PIXBUF */
 
 	if (document == NULL) {
+		gchar *mime_desc;
+
+		mime_desc = g_content_type_get_description (mime_type);
 		g_set_error (error,
 			     EV_DOCUMENT_ERROR,	
 			     0,
-			     _("Unhandled MIME type: “%s”"), mime_type);
-		g_object_unref (file_info);
+			     _("File type %s (%s) is not supported"),
+			     mime_desc, mime_type);
+		g_free (mime_desc);
+		g_free (mime_type);
+
 		return NULL;
 	}
 
 	*compression = get_compression_from_mime_type (mime_type);
 
-        g_object_unref (file_info);
+	g_free (mime_type);
 	
         return document;
 }