Fixed loading of multi-volume rar archives with 7zip

Based on FR commit: e4a225d986cb6df8c6586515cba0e13aee888544
From: Paolo Bacchilega <[email protected]>

1 files changed, 139 insertions, 0 deletions

diff --git a/src/rar-utils.c b/src/rar-utils.c
new file mode 100644
index 0000000..0cb34e2
--- /dev/null
+++ b/src/rar-utils.c
@@ -0,0 +1,139 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/*
+ *  File-Roller
+ *
+ *  Copyright (C) 2011 The Free Software Foundation, Inc.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <config.h>
+#include <string.h>
+#include "file-utils.h"
+#include "fr-command.h"
+#include "gio-utils.h"
+
+
+typedef enum {
+	FIRST_VOLUME_IS_000,
+	FIRST_VOLUME_IS_001,
+	FIRST_VOLUME_IS_RAR
+} FirstVolumeExtension;
+
+
+static char *
+get_first_volume_name (const char           *name,
+		       const char           *pattern,
+		       FirstVolumeExtension  extension_type)
+{
+	char   *volume_name = NULL;
+	GRegex *re;
+
+	re = g_regex_new (pattern, G_REGEX_CASELESS, 0, NULL);
+	if (g_regex_match (re, name, 0, NULL)) {
+		char **parts;
+		int    l, i;
+
+		parts = g_regex_split (re, name, 0);
+		l = strlen (parts[2]);
+		switch (extension_type) {
+		case FIRST_VOLUME_IS_000:
+			for (i = 0; i < l; i++)
+				parts[2][i] = '0';
+			break;
+
+		case FIRST_VOLUME_IS_001:
+			for (i = 0; i < l; i++)
+				parts[2][i] = (i < l - 1) ? '0' : '1';
+			break;
+
+		case FIRST_VOLUME_IS_RAR:
+			if (g_str_has_suffix (parts[1], "r")) {
+				parts[2][0] = 'a';
+				parts[2][1] = 'r';
+			}
+			else {
+				parts[2][0] = 'A';
+				parts[2][1] = 'R';
+			}
+			break;
+		}
+
+		volume_name = g_strjoinv ("", parts);
+
+		g_strfreev (parts);
+	}
+	g_regex_unref (re);
+
+	if (volume_name != NULL) {
+		char *tmp;
+
+		tmp = volume_name;
+		volume_name = g_filename_from_utf8 (tmp, -1, NULL, NULL, NULL);
+		g_free (tmp);
+	}
+
+	return volume_name;
+}
+
+
+void
+rar_check_multi_vomule (FrCommand *comm)
+{
+	GFile *file;
+	char   buffer[11];
+
+	file = g_file_new_for_path (comm->filename);
+	if (! g_load_file_in_buffer (file, buffer, 11, NULL)) {
+		g_object_unref (file);
+		return;
+	}
+
+	if (memcmp (buffer, "Rar!", 4) != 0)
+		return;
+
+	if ((buffer[10] & 0x01) == 0x01) {
+		char   *volume_name = NULL;
+		char   *name;
+
+		name = g_filename_to_utf8 (file_name_from_path (comm->filename), -1, NULL, NULL, NULL);
+
+		volume_name = get_first_volume_name (name, "^(.*\\.part)([0-9]+)(\\.rar)$", FIRST_VOLUME_IS_001);
+		if (volume_name == NULL)
+			volume_name = get_first_volume_name (name, "^(.*\\.r)([0-9]+)$", FIRST_VOLUME_IS_RAR);
+		if (volume_name == NULL)
+			volume_name = get_first_volume_name (name, "^(.*\\.)([0-9]+)$", FIRST_VOLUME_IS_001);
+
+		if (volume_name != NULL) {
+			GFile *parent;
+			GFile *child;
+			char  *volume_filename;
+
+			parent = g_file_get_parent (file);
+			child = g_file_get_child (parent, volume_name);
+			volume_filename = g_file_get_path (child);
+			fr_command_set_multi_volume (comm, volume_filename);
+
+			g_free (volume_filename);
+			g_object_unref (child);
+			g_object_unref (parent);
+		}
+
+		g_free (name);
+	}
+
+	g_object_unref (file);
+}