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/* 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: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/branches/gsoc2007-fsnode/common/file.cpp $
* $Id: file.cpp 28150 2007-07-20 19:42:38Z david_corrales $
*
*/
#include "backends/file/base-file.h"
#include "common/fs.h"
#include "common/hashmap.h"
#include "common/util.h"
#include "common/hash-str.h"
#if defined(UNIX) || defined(__SYMBIAN32__)
#include <errno.h>
#endif
#ifdef MACOSX
#include "CoreFoundation/CoreFoundation.h"
#endif
BaseFile::BaseFile() {
_handle = 0;
_ioFailed = false;
}
//#define DEBUG_FILE_REFCOUNT
BaseFile::~BaseFile() {
#ifdef DEBUG_FILE_REFCOUNT
warning("File::~File on file '%s'", _name.c_str());
#endif
close();
}
bool BaseFile::open(const String &filename, AccessMode mode) {
assert(mode == kFileReadMode || mode == kFileWriteMode);
if (filename.empty()) {
error("File::open: No filename was specified");
}
if (_handle) {
error("File::open: This file object already is opened (%s), won't open '%s'", _name.c_str(), filename.c_str());
}
_name.clear();
clearIOFailed();
const char *modeStr = (mode == kFileReadMode) ? "rb" : "wb";
_handle = _fopen(filename.c_str(), modeStr);
if (_handle == NULL) {
if (mode == kFileReadMode)
debug(2, "File %s not found", filename.c_str());
else
debug(2, "File %s not opened", filename.c_str());
return false;
}
_name = filename;
#ifdef DEBUG_FILE_REFCOUNT
warning("File::open on file '%s'", _name.c_str());
#endif
return true;
}
bool BaseFile::remove(const String &filename){
if (remove(filename.c_str()) != 0) {
if(errno == EACCES)
;//TODO: read-only file
if(errno == ENOENT)
;//TODO: non-existent file
return false;
} else {
return true;
}
}
void BaseFile::close() {
if (_handle)
_fclose((FILE *)_handle);
_handle = NULL;
}
bool BaseFile::isOpen() const {
return _handle != NULL;
}
bool BaseFile::ioFailed() const {
return _ioFailed != 0;
}
void BaseFile::clearIOFailed() {
_ioFailed = false;
}
bool BaseFile::eof() const {
if (_handle == NULL) {
error("File::eof: File is not open!");
return false;
}
return _feof((FILE *)_handle) != 0;
}
uint32 BaseFile::pos() const {
if (_handle == NULL) {
error("File::pos: File is not open!");
return 0;
}
return _ftell((FILE *)_handle);
}
uint32 BaseFile::size() const {
if (_handle == NULL) {
error("File::size: File is not open!");
return 0;
}
uint32 oldPos = _ftell((FILE *)_handle);
_fseek((FILE *)_handle, 0, SEEK_END);
uint32 length = _ftell((FILE *)_handle);
_fseek((FILE *)_handle, oldPos, SEEK_SET);
return length;
}
void BaseFile::seek(int32 offs, int whence) {
if (_handle == NULL) {
error("File::seek: File is not open!");
return;
}
if (_fseek((FILE *)_handle, offs, whence) != 0)
_clearerr((FILE *)_handle);
}
uint32 BaseFile::read(void *ptr, uint32 len) {
byte *ptr2 = (byte *)ptr;
uint32 real_len;
if (_handle == NULL) {
error("File::read: File is not open!");
return 0;
}
if (len == 0)
return 0;
real_len = _fread(ptr2, 1, len, (FILE *)_handle);
if (real_len < len) {
_ioFailed = true;
}
return real_len;
}
/*uint32 File::write(const void *ptr, uint32 len) {
if (_handle == NULL) {
error("File::write: File is not open!");
return 0;
}
if (len == 0)
return 0;
if ((uint32)_fwrite(ptr, 1, len, (FILE *)_handle) != len) {
_ioFailed = true;
}
return len;
}*/
void BaseFile::_clearerr(FILE *stream) {
clearerr(stream);
}
int BaseFile::_fclose(FILE *stream) {
return fclose(stream);
}
int BaseFile::_feof(FILE *stream) const {
return feof(stream);
}
FILE *BaseFile::_fopen(const char * filename, const char * mode) {
return fopen(filename, mode);
}
int BaseFile::_fread(void *buffer, size_t obj_size, size_t num, FILE *stream) {
return fread(buffer, obj_size, num, stream);
}
int BaseFile::_fseek(FILE * stream, long int offset, int origin) const {
return fseek(stream, offset, origin);
}
long BaseFile::_ftell(FILE *stream) const {
return ftell(stream);
}
int BaseFile::_fwrite(const void * ptr, size_t obj_size, size_t count, FILE * stream) {
return fwrite(ptr, obj_size, count, stream);
}
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