* turned DefaultSaveFileManager::checkPath into a virtual method

* add a subclass of DefaultSaveFileManager for UNIX, POSIXSaveFileManager, which overloads checkPath
* switched SDL backend to use POSIXSaveFileManager if UNIX is #defined

svn-id: r34872

1 files changed, 128 insertions, 0 deletions

diff --git a/backends/saves/posix/posix-saves.cpp b/backends/saves/posix/posix-saves.cpp
new file mode 100644
index 0000000000..38d811789f
--- /dev/null
+++ b/backends/saves/posix/posix-saves.cpp
@@ -0,0 +1,128 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#if defined(UNIX) && !defined(DISABLE_DEFAULT_SAVEFILEMANAGER)
+
+#include "backends/saves/posix/posix-saves.h"
+
+#include "common/config-manager.h"
+#include "common/savefile.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/stat.h>
+
+
+#ifdef MACOSX
+#define DEFAULT_SAVE_PATH "Documents/ScummVM Savegames"
+#else
+#define DEFAULT_SAVE_PATH ".scummvm"
+#endif
+
+POSIXSaveFileManager::POSIXSaveFileManager() {
+	// Register default savepath based on HOME
+	Common::String savePath;
+	const char *home = getenv("HOME");
+	if (home && *home && strlen(home) < MAXPATHLEN) {
+		savePath = home;
+		savePath += "/" DEFAULT_SAVE_PATH;
+		ConfMan.registerDefault("savepath", savePath);
+	}
+}
+/*
+POSIXSaveFileManager::POSIXSaveFileManager(const Common::String &defaultSavepath) 
+	: DefaultSaveFileManager(defaultSavepath) {
+}
+*/
+
+#if defined(UNIX)
+void POSIXSaveFileManager::checkPath(const Common::FSNode &dir) {
+	const Common::String path = dir.getPath();
+	clearError();
+
+	struct stat sb;
+
+	// Check whether the dir exists
+	if (stat(path.c_str(), &sb) == -1) {
+		// The dir does not exist, or stat failed for some other reason.
+		// If the problem was that the path pointed to nothing, try
+		// to create the dir (ENOENT case).
+		switch (errno) {
+		case EACCES:
+			setError(SFM_DIR_ACCESS, "Search or write permission denied: "+path);
+			break;
+		case ELOOP:
+			setError(SFM_DIR_LOOP, "Too many symbolic links encountered while traversing the path: "+path);
+			break;
+		case ENAMETOOLONG:
+			setError(SFM_DIR_NAMETOOLONG, "The path name is too long: "+path);
+			break;
+		case ENOENT:
+			if (mkdir(path.c_str(), 0755) != 0) {
+				// mkdir could fail for various reasons: The parent dir doesn't exist,
+				// or is not writeable, the path could be completly bogus, etc.
+				warning("mkdir for '%s' failed!", path.c_str());
+				perror("mkdir");
+
+				switch (errno) {
+				case EACCES:
+					setError(SFM_DIR_ACCESS, "Search or write permission denied: "+path);
+					break;
+				case EMLINK:
+					setError(SFM_DIR_LINKMAX, "The link count of the parent directory would exceed {LINK_MAX}: "+path);
+					break;
+				case ELOOP:
+					setError(SFM_DIR_LOOP, "Too many symbolic links encountered while traversing the path: "+path);
+					break;
+				case ENAMETOOLONG:
+					setError(SFM_DIR_NAMETOOLONG, "The path name is too long: "+path);
+					break;
+				case ENOENT:
+					setError(SFM_DIR_NOENT, "A component of the path does not exist, or the path is an empty string: "+path);
+					break;
+				case ENOTDIR:
+					setError(SFM_DIR_NOTDIR, "A component of the path prefix is not a directory: "+path);
+					break;
+				case EROFS:
+					setError(SFM_DIR_ROFS, "The parent directory resides on a read-only file system:"+path);
+					break;
+				}
+			}
+			break;
+		case ENOTDIR:
+			setError(SFM_DIR_NOTDIR, "A component of the path prefix is not a directory: "+path);
+			break;
+		}
+	} else {
+		// So stat() succeeded. But is the path actually pointing to a directory?
+		if (!S_ISDIR(sb.st_mode)) {
+			setError(SFM_DIR_NOTDIR, "The given savepath is not a directory: "+path);
+		}
+	}
+}
+#endif
+
+#endif