Fix mime type handling.

[evince.git] / libdocument / ev-file-helpers.c

diff --git a/libdocument/ev-file-helpers.c b/libdocument/ev-file-helpers.c
index 45eb3ecbd2e6252929aede8bd14c846a33084400..5998e5ea78e0194773869457f447eab4f6d8867e 100644 (file)
--- a/libdocument/ev-file-helpers.c
+++ b/libdocument/ev-file-helpers.c
@@ -169,17 +169,19 @@ void
 ev_tmp_file_unlink (GFile *file)
 {
        gboolean res;
+       GError  *error = NULL;
 
        if (!file)
                return;
        
-       res = g_file_delete (file, NULL, NULL);
+       res = g_file_delete (file, NULL, &error);
        if (!res) {
                char *uri;
                
                uri = g_file_get_uri (file);
-               g_warning ("Unable to delete temp file %s\n", uri);
+               g_warning ("Unable to delete temp file %s: %s\n", uri, error->message);
                g_free (uri);
+               g_error_free (error);
        }
 }
 
@@ -232,6 +234,67 @@ ev_xfer_uri_simple (const char *from,
 
 }
 
+static gchar *
+get_mime_type_from_uri (const gchar *uri, GError **error)
+{
+       GFile     *file;
+       GFileInfo *file_info;
+       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, error);
+       g_object_unref (file);
+
+       if (file_info == NULL)
+               return NULL;
+
+       mime_type = g_content_type_get_mime_type (
+                       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;
+       }
+
+       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);
+}
+
+gchar *
+ev_file_get_mime_type (const gchar *uri,
+                      gboolean     fast,
+                      GError     **error)
+{
+       return fast ? get_mime_type_from_uri (uri, error) : get_mime_type_from_data (uri, error);
+}
+
 /* Compressed files support */
 #define BZIPCOMMAND "bzip2"
 #define GZIPCOMMAND "gzip"