mirror of
https://github.com/libretro/scummvm.git
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131 lines
3.0 KiB
C++
131 lines
3.0 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002-2003 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 "common/savefile.h"
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#include "common/util.h"
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uint32 SaveFile::read(void *ptr, uint32 size)
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{
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return fread(ptr, 1, size);
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}
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byte SaveFile::readByte()
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{
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byte b;
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if (fread(&b, 1, 1) != 1)
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return 0;
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return b;
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}
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uint16 SaveFile::readUint16LE() {
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uint16 a = readByte();
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uint16 b = readByte();
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return a | (b << 8);
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}
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uint32 SaveFile::readUint32LE() {
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uint32 a = readUint16LE();
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uint32 b = readUint16LE();
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return (b << 16) | a;
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}
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uint16 SaveFile::readUint16BE() {
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uint16 b = readByte();
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uint16 a = readByte();
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return a | (b << 8);
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}
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uint32 SaveFile::readUint32BE() {
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uint32 b = readUint16BE();
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uint32 a = readUint16BE();
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return (b << 16) | a;
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}
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uint32 SaveFile::write(const void *ptr, uint32 size)
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{
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return fwrite(ptr, 1, size);
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}
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void SaveFile::writeByte(byte value)
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{
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fwrite(&value, 1, 1);
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}
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void SaveFile::writeUint16LE(uint16 value) {
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writeByte((byte)(value & 0xff));
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writeByte((byte)(value >> 8));
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}
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void SaveFile::writeUint32LE(uint32 value) {
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writeUint16LE((uint16)(value & 0xffff));
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writeUint16LE((uint16)(value >> 16));
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}
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void SaveFile::writeUint16BE(uint16 value) {
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writeByte((byte)(value >> 8));
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writeByte((byte)(value & 0xff));
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}
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void SaveFile::writeUint32BE(uint32 value) {
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writeUint16BE((uint16)(value >> 16));
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writeUint16BE((uint16)(value & 0xffff));
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}
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SaveFile *SaveFileManager::open_savefile(const char *filename, const char *directory, bool saveOrLoad)
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{
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char buf[256];
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join_paths(filename, directory, buf, sizeof(buf));
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StdioSaveFile *sf = new StdioSaveFile(buf,
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(saveOrLoad? "wb":"rb"));
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if (!sf->is_open()) {
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delete sf;
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sf = NULL;
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}
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return sf;
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}
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void SaveFileManager::join_paths(const char *filename, const char *directory,
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char *buf, int bufsize)
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{
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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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