mirror of
https://github.com/libretro/scummvm.git
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103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "backends/fs/stdiostream.h"
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StdioStream::StdioStream(void *handle) : _handle(handle) {
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assert(handle);
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}
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StdioStream::~StdioStream() {
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fclose((FILE *)_handle);
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}
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bool StdioStream::err() const {
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return ferror((FILE *)_handle) != 0;
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}
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void StdioStream::clearErr() {
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clearerr((FILE *)_handle);
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}
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bool StdioStream::eos() const {
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return feof((FILE *)_handle) != 0;
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}
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int32 StdioStream::pos() const {
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return ftell((FILE *)_handle);
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}
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int32 StdioStream::size() const {
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int32 oldPos = ftell((FILE *)_handle);
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fseek((FILE *)_handle, 0, SEEK_END);
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int32 length = ftell((FILE *)_handle);
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fseek((FILE *)_handle, oldPos, SEEK_SET);
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return length;
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}
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bool StdioStream::seek(int32 offs, int whence) {
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return fseek((FILE *)_handle, offs, whence) == 0;
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}
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uint32 StdioStream::read(void *ptr, uint32 len) {
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return fread((byte *)ptr, 1, len, (FILE *)_handle);
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}
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uint32 StdioStream::write(const void *ptr, uint32 len) {
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return fwrite(ptr, 1, len, (FILE *)_handle);
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}
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bool StdioStream::flush() {
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return fflush((FILE *)_handle) == 0;
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}
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StdioStream *StdioStream::makeFromPath(const Common::String &path, bool writeMode) {
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FILE *handle = fopen(path.c_str(), writeMode ? "wb" : "rb");
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#ifdef __amigaos4__
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//
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// Work around for possibility that someone uses AmigaOS "newlib" build
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// with SmartFileSystem (blocksize 512 bytes), leading to buffer size
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// being only 512 bytes. "Clib2" sets the buffer size to 8KB, resulting
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// smooth movie playback. This forces the buffer to be enough also when
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// using "newlib" compile on SFS.
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//
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if (handle && !writeMode) {
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setvbuf(handle, NULL, _IOFBF, 8192);
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}
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#endif
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#if defined(__WII__)
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// disable newlib's buffering, the device libraries handle caching
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if (handle)
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setvbuf(handle, NULL, _IONBF, 0);
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#endif
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if (handle)
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return new StdioStream(handle);
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return 0;
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}
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