mirror of
https://github.com/libretro/scummvm.git
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237 lines
5.3 KiB
C++
237 lines
5.3 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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*
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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, 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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*/
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#include "common/archive.h"
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#include "common/debug.h"
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#include "common/file.h"
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#include "common/fs.h"
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#include "common/textconsole.h"
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#include "common/system.h"
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#include "backends/fs/fs-factory.h"
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namespace Common {
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File::File()
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: _handle(nullptr) {
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}
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File::~File() {
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close();
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}
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bool File::open(const String &filename) {
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return open(filename, SearchMan);
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}
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bool File::open(const String &filename, Archive &archive) {
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assert(!filename.empty());
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assert(!_handle);
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SeekableReadStream *stream = nullptr;
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if ((stream = archive.createReadStreamForMember(filename))) {
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debug(8, "Opening hashed: %s", filename.c_str());
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} else if ((stream = archive.createReadStreamForMember(filename + "."))) {
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// WORKAROUND: Bug #1458388: "SIMON1: Game Detection fails"
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// sometimes instead of "GAMEPC" we get "GAMEPC." (note trailing dot)
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debug(8, "Opening hashed: %s.", filename.c_str());
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}
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return open(stream, filename);
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}
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bool File::open(const FSNode &node) {
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assert(!_handle);
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if (!node.exists()) {
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warning("File::open: '%s' does not exist", node.getPath().c_str());
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return false;
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} else if (node.isDirectory()) {
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warning("File::open: '%s' is a directory", node.getPath().c_str());
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return false;
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}
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SeekableReadStream *stream = node.createReadStream();
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return open(stream, node.getPath());
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}
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bool File::open(SeekableReadStream *stream, const String &name) {
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assert(!_handle);
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if (stream) {
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_handle = stream;
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_name = name;
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} else {
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debug(2, "File::open: opening '%s' failed", name.c_str());
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}
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return _handle != nullptr;
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}
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bool File::exists(const String &filename) {
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if (SearchMan.hasFile(filename)) {
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return true;
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} else if (SearchMan.hasFile(filename + ".")) {
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// WORKAROUND: Bug #1458388: "SIMON1: Game Detection fails"
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// sometimes instead of "GAMEPC" we get "GAMEPC." (note trailing dot)
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return true;
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}
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return false;
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}
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void File::close() {
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delete _handle;
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_handle = nullptr;
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}
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bool File::isOpen() const {
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return _handle != nullptr;
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}
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bool File::err() const {
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assert(_handle);
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return _handle->err();
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}
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void File::clearErr() {
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assert(_handle);
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_handle->clearErr();
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}
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bool File::eos() const {
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assert(_handle);
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return _handle->eos();
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}
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int32 File::pos() const {
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assert(_handle);
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return _handle->pos();
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}
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int32 File::size() const {
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assert(_handle);
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return _handle->size();
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}
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bool File::seek(int32 offs, int whence) {
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assert(_handle);
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return _handle->seek(offs, whence);
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}
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uint32 File::read(void *ptr, uint32 len) {
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assert(_handle);
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return _handle->read(ptr, len);
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}
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DumpFile::DumpFile() : _handle(nullptr) {
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}
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DumpFile::~DumpFile() {
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close();
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}
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bool DumpFile::open(const String &filename, bool createPath) {
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assert(!filename.empty());
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assert(!_handle);
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if (createPath) {
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for (uint32 i = 0; i < filename.size(); ++i) {
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if (filename[i] == '/' || filename[i] == '\\') {
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Common::String subpath = filename;
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subpath.erase(i);
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if (subpath.empty()) continue;
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AbstractFSNode *node = g_system->getFilesystemFactory()->makeFileNodePath(subpath);
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if (node->exists()) {
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delete node;
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continue;
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}
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if (!node->create(true)) warning("DumpFile: unable to create directories from path prefix");
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delete node;
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}
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}
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}
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FSNode node(filename);
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return open(node);
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}
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bool DumpFile::open(const FSNode &node) {
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assert(!_handle);
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if (node.isDirectory()) {
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warning("DumpFile::open: FSNode is a directory");
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return false;
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}
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_handle = node.createWriteStream();
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if (_handle == nullptr)
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debug(2, "File %s not found", node.getName().c_str());
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return _handle != nullptr;
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}
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void DumpFile::close() {
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delete _handle;
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_handle = nullptr;
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}
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bool DumpFile::isOpen() const {
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return _handle != nullptr;
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}
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bool DumpFile::err() const {
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assert(_handle);
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return _handle->err();
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}
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void DumpFile::clearErr() {
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assert(_handle);
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_handle->clearErr();
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}
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uint32 DumpFile::write(const void *ptr, uint32 len) {
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assert(_handle);
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return _handle->write(ptr, len);
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}
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bool DumpFile::flush() {
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assert(_handle);
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return _handle->flush();
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}
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int32 DumpFile::pos() const { return _handle->pos(); }
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bool DumpFile::seek(int32 offset, int whence) {
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SeekableWriteStream *ws = dynamic_cast<SeekableWriteStream *>(_handle);
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return ws ? ws->seek(offset, whence) : false;
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}
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int32 DumpFile::size() const {
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SeekableWriteStream *ws = dynamic_cast<SeekableWriteStream *>(_handle);
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return ws ? ws->size() : -1;
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}
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} // End of namespace Common
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