From 4606019b8ed2ec4e6ae1cc5b18938c3b3051707a Mon Sep 17 00:00:00 2001
From: Ayan George <ayan.george@canonical.com>
Date: Thu, 26 Jan 2012 09:45:17 -0500
Subject: [PATCH] Added fr_window_overwrite_files_dialog() which checks for
 file extration collisions and displays a warning if files
 will be overwritten.

---
 src/fr-window.c |   68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 68 insertions(+), 0 deletions(-)

diff --git a/src/fr-window.c b/src/fr-window.c
index a9ec234..c89c231 100644
--- a/src/fr-window.c
+++ b/src/fr-window.c
@@ -6642,6 +6642,71 @@ fr_window_archive_extract_here (FrWindow   *window,
 	}
 }
 
+static gboolean
+fr_window_overwrite_files_dialog(FrWindow *window,
+			   GList      *file_list,
+			   const char *extract_to_dir,
+			   const char *base_dir)
+{
+	GList *cur = NULL, *overwrite_list = NULL;
+	gchar *msg = NULL;
+	int rc = GTK_RESPONSE_CANCEL;
+
+	for (cur = file_list; cur; cur = cur->next) {
+		gchar *dest_uri = g_strdup_printf ("%s/%s",extract_to_dir, (char*)cur->data),
+					*dest_path = g_filename_from_uri (dest_uri, NULL, NULL);
+		GFile *file = g_file_new_for_uri (dest_uri);
+
+		if (g_file_query_exists (file, NULL) == TRUE) {
+			GFileType file_type = g_file_query_file_type (file, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL);
+
+			if (file_type != G_FILE_TYPE_DIRECTORY)
+				overwrite_list = g_list_append (overwrite_list, cur->data);
+		}
+
+		g_free(dest_uri);
+		g_free(dest_path);
+	}
+
+	if (g_list_length (overwrite_list) == 0) {
+		rc = TRUE;
+	} else {
+		gint warning_lines;
+		GtkWidget *d;
+
+		msg = g_strdup_printf ("Warning: %d files will be overwritten!\n", g_list_length (overwrite_list));
+
+		/* Show at most 16 files that collide.  Ideally, all files would be listed. */
+		for (cur = overwrite_list, warning_lines = 0; (cur != NULL) && (warning_lines < 16); warning_lines++, cur = cur->next) {
+			gchar *t = msg;
+			msg = g_strdup_printf ("%s\n%s", msg, (char *)cur->data);
+			g_free(t);
+		}
+
+		if (warning_lines == 16) {
+			gchar *t = msg;
+			msg = g_strdup_printf("%s\n...",msg);
+			g_free(t);
+		}
+
+		d = _gtk_message_dialog_new (GTK_WINDOW (window),
+					 GTK_DIALOG_MODAL,
+					 GTK_STOCK_DIALOG_QUESTION,
+					 msg,
+					 NULL,
+					 GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+					 _("Overwrite Files"), GTK_RESPONSE_YES,
+					 NULL);
+
+		gtk_dialog_set_default_response (GTK_DIALOG (d), GTK_RESPONSE_YES);
+
+		rc = gtk_dialog_run (GTK_DIALOG (d)) == GTK_RESPONSE_YES ? TRUE : FALSE ;
+
+		gtk_widget_destroy (GTK_WIDGET (d));
+	}	
+
+	return rc;
+}
 
 void
 fr_window_archive_extract (FrWindow   *window,
@@ -6657,6 +6722,9 @@ fr_window_archive_extract (FrWindow   *window,
 	gboolean     do_not_extract = FALSE;
 	GError      *error = NULL;
 
+	if (fr_window_overwrite_files_dialog(window, file_list, extract_to_dir, base_dir) == FALSE)
+		return;
+		
 	edata = extract_data_new (file_list,
 				  extract_to_dir,
 				  base_dir,
-- 
1.7.5.4