mirror of
https://github.com/libretro/scummvm.git
synced 2025-02-03 09:23:37 +00:00
144 lines
4.0 KiB
C++
144 lines
4.0 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#if !defined(DISABLE_STDIO_FILESTREAM)
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// Disable symbol overrides so that we can use FILE, fopen etc.
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#define FORBIDDEN_SYMBOL_ALLOW_ALL
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// for Windows unicode fopen(): _wfopen()
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#if defined(WIN32) && defined(UNICODE)
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include "backends/platform/sdl/win32/win32_wrapper.h"
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#endif
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// Include this after windows.h so we don't get a warning for redefining ARRAYSIZE
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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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int64 StdioStream::pos() const {
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#if defined(WIN32)
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return _ftelli64((FILE *)_handle);
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#elif defined(HAS_FSEEKO_OFFT_64)
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return ftello((FILE *)_handle);
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#elif defined(HAS_FSEEKO64)
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return ftello64((FILE *)_handle);
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#else
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return ftell((FILE *)_handle);
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#endif
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}
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int64 StdioStream::size() const {
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#if defined(WIN32)
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int64 oldPos = _ftelli64((FILE *)_handle);
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_fseeki64((FILE *)_handle, 0, SEEK_END);
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int64 length = _ftelli64((FILE *)_handle);
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_fseeki64((FILE *)_handle, oldPos, SEEK_SET);
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#elif defined(HAS_FSEEKO_OFFT_64)
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int64 oldPos = ftello((FILE *)_handle);
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fseeko((FILE *)_handle, 0, SEEK_END);
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int64 length = ftello((FILE *)_handle);
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fseeko((FILE *)_handle, oldPos, SEEK_SET);
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#elif defined(HAS_FSEEKO64)
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int64 oldPos = ftello64((FILE *)_handle);
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fseeko64((FILE *)_handle, 0, SEEK_END);
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int64 length = ftello64((FILE *)_handle);
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fseeko64((FILE *)_handle, oldPos, SEEK_SET);
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#else
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int64 oldPos = ftell((FILE *)_handle);
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fseek((FILE *)_handle, 0, SEEK_END);
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int64 length = ftell((FILE *)_handle);
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fseek((FILE *)_handle, oldPos, SEEK_SET);
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#endif
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return length;
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}
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bool StdioStream::seek(int64 offs, int whence) {
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#if defined(WIN32)
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return _fseeki64((FILE *)_handle, offs, whence) == 0;
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#elif defined(HAS_FSEEKO_OFFT_64)
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return fseeko((FILE *)_handle, offs, whence) == 0;
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#elif defined(HAS_FSEEKO64)
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return fseeko64((FILE *)_handle, offs, whence) == 0;
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#else
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return fseek((FILE *)_handle, offs, whence) == 0;
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#endif
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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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bool StdioStream::setBufferSize(uint32 bufferSize) {
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if (bufferSize != 0) {
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return setvbuf((FILE *)_handle, nullptr, _IOFBF, bufferSize) == 0;
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} else {
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return setvbuf((FILE *)_handle, nullptr, _IONBF, 0) == 0;
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}
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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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#if defined(WIN32) && defined(UNICODE)
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wchar_t *wPath = Win32::stringToTchar(path);
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FILE *handle = _wfopen(wPath, writeMode ? L"wb" : L"rb");
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free(wPath);
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#elif defined(HAS_FSEEKO64)
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FILE *handle = fopen64(path.c_str(), writeMode ? "wb" : "rb");
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#else
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FILE *handle = fopen(path.c_str(), writeMode ? "wb" : "rb");
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#endif
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if (handle)
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return new StdioStream(handle);
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return nullptr;
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}
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#endif
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