mirror of
https://github.com/libretro/scummvm.git
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128 lines
3.5 KiB
C++
128 lines
3.5 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002-2004 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*
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*/
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#include "stdafx.h"
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#include "common/util.h"
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#include "common/savefile.h"
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#include <stdio.h>
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#include <string.h>
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#ifdef USE_ZLIB
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#include <zlib.h>
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#endif
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class StdioSaveFile : public SaveFile {
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private:
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FILE *fh;
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public:
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StdioSaveFile(const char *filename, bool saveOrLoad)
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{ fh = ::fopen(filename, (saveOrLoad? "wb" : "rb")); }
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~StdioSaveFile()
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{ if(fh) ::fclose(fh); }
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bool isOpen() const { return fh != 0; }
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uint32 read(void *buf, uint32 cnt)
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{ return ::fread(buf, 1, cnt, fh); }
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uint32 write(const void *buf, uint32 cnt)
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{ return ::fwrite(buf, 1, cnt, fh); }
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};
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#ifdef USE_ZLIB
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class GzipSaveFile : public SaveFile {
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private:
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gzFile fh;
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public:
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GzipSaveFile(const char *filename, bool saveOrLoad)
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{ fh = ::gzopen(filename, (saveOrLoad? "wb" : "rb")); }
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~GzipSaveFile()
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{ if(fh) ::gzclose(fh); }
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bool isOpen() const { return fh != 0; }
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uint32 read(void *buf, uint32 cnt) {
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return ::gzread(fh, buf, cnt);
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}
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uint32 write(const void *buf, uint32 cnt) {
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// Due to a "bug" in the zlib headers (or maybe I should say,
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// a bug in the C++ spec? Whatever <g>) we have to be a bit
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// hackish here and remove the const qualifier.
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// Note that gzwrite's buf param is declared as "const voidp"
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// which you might think is the same as "const void *" but it
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// is not - rather it is equal to "void const *" which is the
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// same as "void *". Hrmpf
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return ::gzwrite(fh, const_cast<void *>(buf), cnt);
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}
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};
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#endif
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static void join_paths(const char *filename, const char *directory,
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char *buf, int bufsize) {
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buf[bufsize-1] = '\0';
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strncpy(buf, directory, bufsize-1);
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#ifdef WIN32
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// Fix for Win98 issue related with game directory pointing to root drive ex. "c:\"
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if ((buf[0] != 0) && (buf[1] == ':') && (buf[2] == '\\') && (buf[3] == 0)) {
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buf[2] = 0;
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}
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#endif
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const int dirLen = strlen(buf);
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if (dirLen > 0) {
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#ifdef __MORPHOS__
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if (buf[dirLen-1] != ':' && buf[dirLen-1] != '/')
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#endif
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#if !defined(__GP32__) && !defined(__PALM_OS__)
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strncat(buf, "/", bufsize-1); // prevent double /
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#endif
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}
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strncat(buf, filename, bufsize-1);
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}
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SaveFile *DefaultSaveFileManager::open_savefile(const char *filename, const char *directory, bool saveOrLoad) {
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char buf[256];
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join_paths(filename, directory, buf, sizeof(buf));
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SaveFile *sf = makeSaveFile(buf, saveOrLoad);
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if (!sf->isOpen()) {
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delete sf;
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sf = 0;
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}
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return sf;
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}
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void DefaultSaveFileManager::list_savefiles(const char * /* prefix */, const char *directory, bool *marks, int num) {
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memset(marks, true, num * sizeof(bool));
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}
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SaveFile *DefaultSaveFileManager::makeSaveFile(const char *filename, bool saveOrLoad) {
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#ifdef USE_ZLIB
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return new GzipSaveFile(filename, saveOrLoad);
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#else
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return new StdioSaveFile(filename, saveOrLoad);
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#endif
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}
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