350 lines
9.1 KiB
C++
350 lines
9.1 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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* $URL$
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* $Id$
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*/
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#include "backends/fs/abstract-fs.h"
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#include "backends/fs/stdiostream.h"
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#include <kernel.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "backends/platform/ps2/asyncfio.h"
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#include "backends/platform/ps2/fileio.h"
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#include "backends/platform/ps2/systemps2.h"
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#include "backends/platform/ps2/ps2debug.h"
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#define DEFAULT_MODE (FIO_S_IRUSR | FIO_S_IWUSR | FIO_S_IRGRP | FIO_S_IWGRP | FIO_S_IROTH | FIO_S_IWOTH)
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extern AsyncFio fio;
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extern OSystem_PS2 *g_systemPs2;
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/**
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* Implementation of the ScummVM file system API based on the Ps2SDK.
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*
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* Parts of this class are documented in the base interface class, AbstractFilesystemNode.
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*/
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class Ps2FilesystemNode : public AbstractFilesystemNode {
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friend class Ps2FilesystemFactory;
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protected:
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Common::String _displayName;
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Common::String _path;
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bool _isDirectory;
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bool _isRoot;
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private:
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char *getDeviceDescription(const char *path) const;
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bool getDirectoryFlag(const char *path);
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public:
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/**
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* Creates a PS2FilesystemNode with the root node as path.
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*/
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Ps2FilesystemNode();
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/**
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* Creates a PS2FilesystemNode for a given path.
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*
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* @param path Common::String with the path the new node should point to.
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*/
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Ps2FilesystemNode(const Common::String &path);
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Ps2FilesystemNode(const Common::String &path, bool verify);
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/**
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* Copy constructor.
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*/
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Ps2FilesystemNode(const Ps2FilesystemNode *node);
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virtual bool exists(void) const;
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virtual Common::String getDisplayName() const { return _displayName; }
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virtual Common::String getName() const { return _displayName; }
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virtual Common::String getPath() const { return _path; }
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virtual bool isDirectory() const {
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return _isDirectory;
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}
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virtual bool isReadable() const {
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return exists();
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}
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virtual bool isWritable() const {
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// The only writable device on the ps2 is the memory card
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return false;
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}
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virtual AbstractFilesystemNode *clone() const { return new Ps2FilesystemNode(this); }
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virtual AbstractFilesystemNode *getChild(const Common::String &n) const;
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virtual bool getChildren(AbstractFSList &list, ListMode mode, bool hidden) const;
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virtual AbstractFilesystemNode *getParent() const;
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virtual Common::SeekableReadStream *openForReading();
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virtual Common::WriteStream *openForWriting();
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};
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Ps2FilesystemNode::Ps2FilesystemNode() {
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_isDirectory = true;
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_isRoot = true;
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_displayName = "PlayStation 2";
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_path = "";
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}
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Ps2FilesystemNode::Ps2FilesystemNode(const Common::String &path) {
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_path = path;
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_isDirectory = true;
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if (strcmp(path.c_str(), "") == 0) {
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_isRoot = true;
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_displayName = Common::String("PlayStation 2");
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} else {
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_isRoot = false;
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const char *dsplName = NULL, *pos = path.c_str();
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while (*pos)
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if (*pos++ == '/')
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dsplName = pos;
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if (dsplName)
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_displayName = Common::String(dsplName);
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else
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_displayName = getDeviceDescription(path.c_str());
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}
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}
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Ps2FilesystemNode::Ps2FilesystemNode(const Common::String &path, bool verify) {
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_path = path;
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if (strcmp(path.c_str(), "") == 0) {
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_isRoot = true; /* root is always a dir*/
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_displayName = Common::String("PlayStation 2");
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_isDirectory = true;
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} else {
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_isRoot = false;
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const char *dsplName = NULL, *pos = path.c_str();
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while (*pos)
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if (*pos++ == '/')
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dsplName = pos;
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if (dsplName) {
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_displayName = Common::String(dsplName);
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if (verify)
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_isDirectory = getDirectoryFlag(path.c_str());
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else
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_isDirectory = false;
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} else {
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_displayName = getDeviceDescription(path.c_str());
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_isDirectory = true; /* devices are always dir */
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}
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}
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}
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Ps2FilesystemNode::Ps2FilesystemNode(const Ps2FilesystemNode *node) {
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_displayName = node->_displayName;
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_isDirectory = node->_isDirectory;
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_path = node->_path;
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_isRoot = node->_isRoot;
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}
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bool Ps2FilesystemNode::exists(void) const {
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dbg_printf("Ps2FilesystemNode::exists: path \"%s\": ", _path.c_str());
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if (_path[4] != ':') { // don't bother for relative path... they always fail on PS2!
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dbg_printf("NO, relative path\n");
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return false;
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}
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if (_path[0] == 'h') { // bypass host
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dbg_printf("NO, host device ignored\n");
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return false;
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}
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int fd = fio.open(_path.c_str(), O_RDONLY);
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if (fd == -EISDIR) {
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dbg_printf("YES, directory\n");
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return true;
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} else if (fd >= 0) {
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dbg_printf("YES, file\n");
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fio.close(fd);
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return true;
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}
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printf("NO, not found\n");
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return false;
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}
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bool Ps2FilesystemNode::getDirectoryFlag(const char *path) {
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if (strncmp(path, "host:", 5) == 0)
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return true; // Can't get listings from host: right now
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int fd = fio.open(_path.c_str(), O_RDONLY);
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if (fd == -EISDIR) {
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dbg_printf(" romeo : new node [ %s ] is a dir\n", path);
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return true;
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} else if (fd >=0) {
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dbg_printf(" romeo : new node [ %s ] is -not- a dir (%d)\n", path, fd);
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fio.close(fd);
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} else
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dbg_printf(" romeo : new node [ %s ] is -not- (%d)\n", path, fd);
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return false;
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}
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AbstractFilesystemNode *Ps2FilesystemNode::getChild(const Common::String &n) const {
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if (!_isDirectory)
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return NULL;
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char listDir[256];
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sprintf(listDir, "%s/", _path.c_str());
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int fd = fio.dopen(listDir);
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if (fd >= 0) {
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iox_dirent_t dirent;
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while (fio.dread(fd, &dirent) > 0) {
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if (strcmp(n.c_str(), dirent.name) == 0) {
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Ps2FilesystemNode *dirEntry = new Ps2FilesystemNode();
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dirEntry->_isDirectory = (bool)(dirent.stat.mode & FIO_S_IFDIR);
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dirEntry->_isRoot = false;
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dirEntry->_path = _path;
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dirEntry->_path += "/";
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dirEntry->_path += dirent.name;
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dirEntry->_displayName = dirent.name;
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fio.dclose(fd);
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return dirEntry;
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}
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}
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fio.dclose(fd);
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}
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return NULL;
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}
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bool Ps2FilesystemNode::getChildren(AbstractFSList &list, ListMode mode, bool hidden) const {
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//TODO: honor the hidden flag
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if (!_isDirectory)
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return false;
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if (_isRoot) {
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Ps2FilesystemNode dirEntry;
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dirEntry._isDirectory = true;
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dirEntry._isRoot = false;
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dirEntry._path = "cdfs:";
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dirEntry._displayName = getDeviceDescription(dirEntry._path.c_str());
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list.push_back(new Ps2FilesystemNode(&dirEntry));
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if (g_systemPs2->hddPresent()) {
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dirEntry._path = "pfs0:";
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dirEntry._displayName = getDeviceDescription(dirEntry._path.c_str());
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list.push_back(new Ps2FilesystemNode(&dirEntry));
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}
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if (g_systemPs2->usbMassPresent()) {
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dirEntry._path = "mass:";
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dirEntry._displayName = getDeviceDescription(dirEntry._path.c_str());
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list.push_back(new Ps2FilesystemNode(&dirEntry));
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}
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return true;
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} else {
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char listDir[256];
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int fd;
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if (_path.lastChar() == '/' /* || _path.lastChar() == ':'*/)
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fd = fio.dopen(_path.c_str());
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else {
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sprintf(listDir, "%s/", _path.c_str());
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fd = fio.dopen(listDir);
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}
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if (fd >= 0) {
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iox_dirent_t dirent;
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Ps2FilesystemNode dirEntry;
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int dreadRes;
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while ((dreadRes = fio.dread(fd, &dirent)) > 0) {
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if (dirent.name[0] == '.')
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continue; // ignore '.' and '..'
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if (((mode == Common::FilesystemNode::kListDirectoriesOnly) && (dirent.stat.mode & FIO_S_IFDIR)) ||
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((mode == Common::FilesystemNode::kListFilesOnly) && !(dirent.stat.mode & FIO_S_IFDIR)) ||
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(mode == Common::FilesystemNode::kListAll)) {
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dirEntry._isDirectory = (bool)(dirent.stat.mode & FIO_S_IFDIR);
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dirEntry._isRoot = false;
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dirEntry._path = _path;
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if (_path.lastChar() != '/')
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dirEntry._path += "/";
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dirEntry._path += dirent.name;
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dirEntry._displayName = dirent.name;
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list.push_back(new Ps2FilesystemNode(&dirEntry));
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}
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}
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fio.dclose(fd);
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return true;
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} else
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return false;
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}
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}
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AbstractFilesystemNode *Ps2FilesystemNode::getParent() const {
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if (_isRoot)
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return new Ps2FilesystemNode(this);
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const char *slash = NULL;
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const char *cnt = _path.c_str();
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while (*cnt) {
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if (*cnt == '/')
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slash = cnt;
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cnt++;
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}
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if (slash)
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return new Ps2FilesystemNode(Common::String(_path.c_str(), slash - _path.c_str()));
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else
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return new Ps2FilesystemNode();
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}
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char *Ps2FilesystemNode::getDeviceDescription(const char *path) const {
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if (strncmp(path, "cdfs", 4) == 0)
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return "DVD Drive";
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else if (strncmp(path, "mass", 4) == 0)
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return "USB Mass Storage";
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else
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return "Harddisk";
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}
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Common::SeekableReadStream *Ps2FilesystemNode::openForReading() {
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return StdioStream::makeFromPath(getPath().c_str(), false);
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}
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Common::WriteStream *Ps2FilesystemNode::openForWriting() {
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return StdioStream::makeFromPath(getPath().c_str(), true);
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}
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