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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2006 The ScummVM project
*
* 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.
*
* $URL$
* $Id$
*
*/
#include "common/file.h"
#include "common/util.h"
#include "backends/fs/fs.h"
#ifdef MACOSX
#include "CoreFoundation/CoreFoundation.h"
#endif
namespace Common {
StringList File::_defaultDirectories;
File::FilesMap File::_filesMap;
bool File::_lockedDirectories;
static FILE *fopenNoCase(const char *filename, const char *directory, const char *mode) {
FILE *file;
char buf[512];
char *ptr;
assert(directory);
strcpy(buf, directory);
#if !defined(__GP32__) && !defined(PALMOS_MODE)
// Add a trailing slash, if necessary.
if (buf[0] != 0) {
const int dirLen = strlen(buf);
if (buf[dirLen-1] != ':' && buf[dirLen-1] != '/' && buf[dirLen-1] != '\\')
strcat(buf, "/");
}
#endif
// Append the filename to the path string
const int offsetToFileName = strlen(buf);
strcat(buf, filename);
//
// Try to open the file normally
//
file = fopen(buf, mode);
//
// Try again, with file name converted to upper case
//
if (!file) {
ptr = buf + offsetToFileName;
while (*ptr) {
*ptr = toupper(*ptr);
ptr++;
}
file = fopen(buf, mode);
}
//
// Try again, with file name converted to lower case
//
if (!file) {
ptr = buf + offsetToFileName;
while (*ptr) {
*ptr = tolower(*ptr);
ptr++;
}
file = fopen(buf, mode);
}
//
// Try again, with file name capitalized
//
if (!file) {
ptr = buf + offsetToFileName;
*ptr = toupper(*ptr);
file = fopen(buf, mode);
}
#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 (file) {
setvbuf(file, NULL, _IOFBF, 8192);
}
#endif
return file;
}
void File::addDefaultDirectory(const String &directory, bool lockDirectories) {
String lfn;
if (_lockedDirectories)
error("addDefaultDirectory is called too late. Move all calls to engine constructor");
_lockedDirectories = lockDirectories;
FilesystemNode dir(directory.c_str());
if (!dir.isDirectory())
return;
_defaultDirectories.push_back(directory);
FSList fslist(dir.listDir(FilesystemNode::kListFilesOnly));
for (FSList::const_iterator file = fslist.begin(); file != fslist.end(); ++file) {
lfn = file->displayName();
lfn.toLowercase();
if (!_filesMap.contains(lfn))
_filesMap[lfn] = file->path();
}
}
void File::addDefaultDirectoryRecursive(const String &directory, int level, int baseLen) {
if (level > 4)
return;
String lfn;
if (_lockedDirectories)
error("addDefaultDirectoryRecursive is called too late. Move all calls to engine constructor");
FilesystemNode dir(directory.c_str());
if (!dir.isDirectory())
return;
_defaultDirectories.push_back(directory);
if (baseLen == 0) {
baseLen = directory.size();
if (directory.lastChar() != '/'
#if defined(__MORPHOS__) || defined(__amigaos4__)
&& directory.lastChar() != ':'
#endif
&& directory.lastChar() != '\\')
baseLen++;
}
FSList fslist(dir.listDir(FilesystemNode::kListAllNoRoot));
for (FSList::const_iterator file = fslist.begin(); file != fslist.end(); ++file) {
if (file->isDirectory()) {
addDefaultDirectoryRecursive(file->path(), level + 1, baseLen);
} else {
lfn = String(file->path().c_str() + baseLen);
lfn.toLowercase();
if (!_filesMap.contains(lfn))
_filesMap[lfn] = file->path();
}
}
}
void File::resetDefaultDirectories() {
_defaultDirectories.clear();
_filesMap.clear();
_lockedDirectories = false;
}
File::File()
: _handle(0), _ioFailed(false), _refcount(1) {
_lockedDirectories = false;
}
//#define DEBUG_FILE_REFCOUNT
File::~File() {
#ifdef DEBUG_FILE_REFCOUNT
warning("File::~File on file '%s'", _name.c_str());
#endif
close();
}
void File::incRef() {
#ifdef DEBUG_FILE_REFCOUNT
warning("File::incRef on file '%s'", _name.c_str());
#endif
_refcount++;
}
void File::decRef() {
#ifdef DEBUG_FILE_REFCOUNT
warning("File::decRef on file '%s'", _name.c_str());
#endif
if (--_refcount == 0) {
delete this;
}
}
bool File::open(const char *filename, AccessMode mode, const char *directory) {
assert(mode == kFileReadMode || mode == kFileWriteMode);
if (_handle) {
error("File::open: This file object already is opened (%s), won't open '%s'", _name.c_str(), filename);
}
if (filename == NULL || *filename == 0) {
error("File::open: No filename was specified!");
}
clearIOFailed();
String fname(filename);
fname.toLowercase();
const char *modeStr = (mode == kFileReadMode) ? "rb" : "wb";
if (mode == kFileWriteMode || directory) {
_handle = fopenNoCase(filename, directory ? directory : "", modeStr);
} else if (_filesMap.contains(fname)) {
debug(3, "Opening hashed: %s", _filesMap[fname].c_str());
_handle = fopen(_filesMap[fname].c_str(), modeStr);
} else {
StringList::const_iterator x;
// Try all default directories
for (x = _defaultDirectories.begin(); _handle == NULL && x != _defaultDirectories.end(); ++x) {
_handle = fopenNoCase(filename, x->c_str(), modeStr);
}
// Last resort: try the current directory
if (_handle == NULL)
_handle = fopenNoCase(filename, "", modeStr);
// Last last (really) resort: try looking inside the application bundle on MacOS for the lowercase file.
#ifdef MACOSX
if (!_handle) {
CFStringRef cfFileName = CFStringCreateWithBytes(NULL, (const UInt8 *)filename, strlen(filename), kCFStringEncodingASCII, false);
CFURLRef fileUrl = CFBundleCopyResourceURL(CFBundleGetMainBundle(), cfFileName, NULL, NULL);
if (fileUrl) {
UInt8 buf[256];
if (CFURLGetFileSystemRepresentation(fileUrl, false, (UInt8 *)buf, 256)) {
_handle = fopen((char *)buf, modeStr);
}
}
}
#endif
}
if (_handle == NULL) {
if (mode == kFileReadMode)
debug(2, "File %s not found", filename);
else
debug(2, "File %s not opened", filename);
return false;
}
_name = filename;
#ifdef DEBUG_FILE_REFCOUNT
warning("File::open on file '%s'", _name.c_str());
#endif
return true;
}
bool File::exists(const char *filename, const char *directory) {
// FIXME: Ugly ugly hack!
File tmp;
return tmp.open(filename, kFileReadMode, directory);
}
void File::close() {
if (_handle)
fclose(_handle);
_handle = NULL;
}
bool File::isOpen() const {
return _handle != NULL;
}
bool File::ioFailed() const {
return _ioFailed != 0;
}
void File::clearIOFailed() {
_ioFailed = false;
}
bool File::eof() const {
if (_handle == NULL) {
error("File::eof: File is not open!");
return false;
}
return feof(_handle) != 0;
}
uint32 File::pos() const {
if (_handle == NULL) {
error("File::pos: File is not open!");
return 0;
}
return ftell(_handle);
}
uint32 File::size() const {
if (_handle == NULL) {
error("File::size: File is not open!");
return 0;
}
uint32 oldPos = ftell(_handle);
fseek(_handle, 0, SEEK_END);
uint32 length = ftell(_handle);
fseek(_handle, oldPos, SEEK_SET);
return length;
}
void File::seek(int32 offs, int whence) {
if (_handle == NULL) {
error("File::seek: File is not open!");
return;
}
if (fseek(_handle, offs, whence) != 0)
clearerr(_handle);
}
uint32 File::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, _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, _handle) != len) {
_ioFailed = true;
}
return len;
}
} // End of namespace Common
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