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authorMax Horn2006-06-24 10:08:43 +0000
committerMax Horn2006-06-24 10:08:43 +0000
commit6a588f8399bf6f598b476e1a05104e8d6f78f277 (patch)
tree21685c9d8a47948f896ed4fa054e6df3659feb17 /backends/saves
parentbd3c24bce4f1ebbe56827c757615d7c0414df160 (diff)
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Moved savefile code to new 'saves' backend module (work in progress)
svn-id: r23282
Diffstat (limited to 'backends/saves')
-rw-r--r--backends/saves/default/default-saves.cpp207
-rw-r--r--backends/saves/default/default-saves.h36
2 files changed, 243 insertions, 0 deletions
diff --git a/backends/saves/default/default-saves.cpp b/backends/saves/default/default-saves.cpp
new file mode 100644
index 0000000000..d48ccc2be8
--- /dev/null
+++ b/backends/saves/default/default-saves.cpp
@@ -0,0 +1,207 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002-2006 The ScummVM project
+ *
+ * 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "common/stdafx.h"
+//#include "common/util.h"
+#include "backends/saves/default/default-saves.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#ifdef USE_ZLIB
+#include <zlib.h>
+#endif
+
+class StdioSaveFile : public Common::InSaveFile, public Common::OutSaveFile {
+private:
+ FILE *fh;
+public:
+ StdioSaveFile(const char *filename, bool saveOrLoad) {
+ fh = ::fopen(filename, (saveOrLoad? "wb" : "rb"));
+ }
+ ~StdioSaveFile() {
+ if (fh)
+ ::fclose(fh);
+ }
+
+ bool eos() const { return feof(fh) != 0; }
+ bool ioFailed() const { return ferror(fh) != 0; }
+ void clearIOFailed() { clearerr(fh); }
+
+ bool isOpen() const { return fh != 0; }
+
+ uint32 read(void *dataPtr, uint32 dataSize) {
+ assert(fh);
+ return fread(dataPtr, 1, dataSize, fh);
+ }
+ uint32 write(const void *dataPtr, uint32 dataSize) {
+ assert(fh);
+ return fwrite(dataPtr, 1, dataSize, fh);
+ }
+
+ uint32 pos() const {
+ assert(fh);
+ return ftell(fh);
+ }
+ uint32 size() const {
+ assert(fh);
+ uint32 oldPos = ftell(fh);
+ fseek(fh, 0, SEEK_END);
+ uint32 length = ftell(fh);
+ fseek(fh, oldPos, SEEK_SET);
+ return length;
+ }
+
+ void seek(int32 offs, int whence = SEEK_SET) {
+ assert(fh);
+ fseek(fh, offs, whence);
+ }
+};
+
+
+#ifdef USE_ZLIB
+class GzipSaveFile : public Common::InSaveFile, public Common::OutSaveFile {
+private:
+ gzFile fh;
+ bool _ioError;
+public:
+ GzipSaveFile(const char *filename, bool saveOrLoad) {
+ _ioError = false;
+ fh = gzopen(filename, (saveOrLoad? "wb" : "rb"));
+ }
+ ~GzipSaveFile() {
+ if (fh)
+ gzclose(fh);
+ }
+
+ bool eos() const { return gzeof(fh) != 0; }
+ bool ioFailed() const { return _ioError; }
+ void clearIOFailed() { _ioError = false; }
+
+ bool isOpen() const { return fh != 0; }
+
+ uint32 read(void *dataPtr, uint32 dataSize) {
+ assert(fh);
+ int ret = gzread(fh, dataPtr, dataSize);
+ if (ret <= -1)
+ _ioError = true;
+ return ret;
+ }
+ uint32 write(const void *dataPtr, uint32 dataSize) {
+ assert(fh);
+ // Due to a "bug" in the zlib headers (or maybe I should say,
+ // a bug in the C++ spec? Whatever <g>) we have to be a bit
+ // hackish here and remove the const qualifier.
+ // Note that gzwrite's buf param is declared as "const voidp"
+ // which you might think is the same as "const void *" but it
+ // is not - rather it is equal to "void const *" which is the
+ // same as "void *". Hrmpf
+ int ret = gzwrite(fh, const_cast<void *>(dataPtr), dataSize);
+ if (ret <= 0)
+ _ioError = true;
+ return ret;
+ }
+
+ uint32 pos() const {
+ assert(fh);
+ return gztell(fh);
+ }
+ uint32 size() const {
+ assert(fh);
+ uint32 oldPos = gztell(fh);
+ gzseek(fh, 0, SEEK_END);
+ uint32 length = gztell(fh);
+ gzseek(fh, oldPos, SEEK_SET);
+ return length;
+ }
+
+ void seek(int32 offs, int whence = SEEK_SET) {
+ assert(fh);
+ gzseek(fh, offs, whence);
+ }
+};
+#endif
+
+
+static void join_paths(const char *filename, const char *directory,
+ char *buf, int bufsize) {
+ buf[bufsize-1] = '\0';
+ strncpy(buf, directory, bufsize-1);
+
+#ifdef WIN32
+ // Fix for Win98 issue related with game directory pointing to root drive ex. "c:\"
+ if ((buf[0] != 0) && (buf[1] == ':') && (buf[2] == '\\') && (buf[3] == 0)) {
+ buf[2] = 0;
+ }
+#endif
+
+ const int dirLen = strlen(buf);
+
+ if (dirLen > 0) {
+#if defined(__MORPHOS__) || defined(__amigaos4__)
+ if (buf[dirLen-1] != ':' && buf[dirLen-1] != '/')
+#endif
+
+#if !defined(__GP32__) && !defined(PALMOS_MODE)
+ strncat(buf, "/", bufsize-1); // prevent double /
+#endif
+ }
+ strncat(buf, filename, bufsize-1);
+}
+
+Common::OutSaveFile *DefaultSaveFileManager::openForSaving(const char *filename) {
+ char buf[256];
+ join_paths(filename, getSavePath(), buf, sizeof(buf));
+
+#ifdef USE_ZLIB
+ GzipSaveFile *sf = new GzipSaveFile(buf, true);
+#else
+ StdioSaveFile *sf = new StdioSaveFile(buf, true);
+#endif
+
+ if (!sf->isOpen()) {
+ delete sf;
+ sf = 0;
+ }
+ return sf;
+}
+
+Common::InSaveFile *DefaultSaveFileManager::openForLoading(const char *filename) {
+ char buf[256];
+ join_paths(filename, getSavePath(), buf, sizeof(buf));
+
+#ifdef USE_ZLIB
+ GzipSaveFile *sf = new GzipSaveFile(buf, false);
+#else
+ StdioSaveFile *sf = new StdioSaveFile(buf, false);
+#endif
+
+ if (!sf->isOpen()) {
+ delete sf;
+ sf = 0;
+ }
+ return sf;
+}
+
+void DefaultSaveFileManager::listSavefiles(const char * /* prefix */, bool *marks, int num) {
+ memset(marks, true, num * sizeof(bool));
+}
diff --git a/backends/saves/default/default-saves.h b/backends/saves/default/default-saves.h
new file mode 100644
index 0000000000..8a6df66af9
--- /dev/null
+++ b/backends/saves/default/default-saves.h
@@ -0,0 +1,36 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002-2006 The ScummVM project
+ *
+ * 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#ifndef BACKEND_SAVES_DEFAULT_H
+#define BACKEND_SAVES_DEFAULT_H
+
+#include "common/stdafx.h"
+#include "common/savefile.h"
+
+class DefaultSaveFileManager : public Common::SaveFileManager {
+public:
+ virtual Common::OutSaveFile *openForSaving(const char *filename);
+ virtual Common::InSaveFile *openForLoading(const char *filename);
+ virtual void listSavefiles(const char * /* prefix */, bool *marks, int num);
+};
+
+#endif