mirror of
https://github.com/libretro/scummvm.git
synced 2025-01-24 11:36:22 +00:00
44393b2dc8
A new header file common/forbidden.h is included by scummsys.h and it re-#defines numerous symbols like fopen(), fread(), system(), etc. with garbage, in order to provoke compile errors in any code using them. If a .cpp file really *must* use any of these (e.g. because it is a backend file), then these redefinitions can be disabled by #defining FORBIDDEN_SYMBOL_ALLOW_ALL as the first thing in the .cpp file. Whenever this is done, an explanatory comment should be added. Note that this system cannot catch all "bad" usages (notably the Lua code in the sword25 engine), as it can only work if scummsys.h is included. svn-id: r53961
106 lines
2.8 KiB
C++
106 lines
2.8 KiB
C++
/* 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.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*
|
|
*/
|
|
|
|
// Disable symbol overrides so that we can use FILE, fopen etc.
|
|
#define FORBIDDEN_SYMBOL_ALLOW_ALL
|
|
|
|
#include "backends/fs/stdiostream.h"
|
|
|
|
StdioStream::StdioStream(void *handle) : _handle(handle) {
|
|
assert(handle);
|
|
}
|
|
|
|
StdioStream::~StdioStream() {
|
|
fclose((FILE *)_handle);
|
|
}
|
|
|
|
bool StdioStream::err() const {
|
|
return ferror((FILE *)_handle) != 0;
|
|
}
|
|
|
|
void StdioStream::clearErr() {
|
|
clearerr((FILE *)_handle);
|
|
}
|
|
|
|
bool StdioStream::eos() const {
|
|
return feof((FILE *)_handle) != 0;
|
|
}
|
|
|
|
int32 StdioStream::pos() const {
|
|
return ftell((FILE *)_handle);
|
|
}
|
|
|
|
int32 StdioStream::size() const {
|
|
int32 oldPos = ftell((FILE *)_handle);
|
|
fseek((FILE *)_handle, 0, SEEK_END);
|
|
int32 length = ftell((FILE *)_handle);
|
|
fseek((FILE *)_handle, oldPos, SEEK_SET);
|
|
|
|
return length;
|
|
}
|
|
|
|
bool StdioStream::seek(int32 offs, int whence) {
|
|
return fseek((FILE *)_handle, offs, whence) == 0;
|
|
}
|
|
|
|
uint32 StdioStream::read(void *ptr, uint32 len) {
|
|
return fread((byte *)ptr, 1, len, (FILE *)_handle);
|
|
}
|
|
|
|
uint32 StdioStream::write(const void *ptr, uint32 len) {
|
|
return fwrite(ptr, 1, len, (FILE *)_handle);
|
|
}
|
|
|
|
bool StdioStream::flush() {
|
|
return fflush((FILE *)_handle) == 0;
|
|
}
|
|
|
|
StdioStream *StdioStream::makeFromPath(const Common::String &path, bool writeMode) {
|
|
FILE *handle = fopen(path.c_str(), writeMode ? "wb" : "rb");
|
|
|
|
#ifdef __amigaos4__
|
|
//
|
|
// Work around for possibility that someone uses AmigaOS "newlib" build
|
|
// with SmartFileSystem (blocksize 512 bytes), leading to buffer size
|
|
// being only 512 bytes. "Clib2" sets the buffer size to 8KB, resulting
|
|
// smooth movie playback. This forces the buffer to be enough also when
|
|
// using "newlib" compile on SFS.
|
|
//
|
|
if (handle && !writeMode) {
|
|
setvbuf(handle, NULL, _IOFBF, 8192);
|
|
}
|
|
#endif
|
|
|
|
#if defined(__WII__)
|
|
// disable newlib's buffering, the device libraries handle caching
|
|
if (handle)
|
|
setvbuf(handle, NULL, _IONBF, 0);
|
|
#endif
|
|
|
|
if (handle)
|
|
return new StdioStream(handle);
|
|
return 0;
|
|
}
|