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author | Marcus Comstedt | 2006-06-03 14:09:04 +0000 |
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committer | Marcus Comstedt | 2006-06-03 14:09:04 +0000 |
commit | 51e1438020d427d411c237d1c019340c621399e1 (patch) | |
tree | 5586219e82b87b9e85751b01ad1d8b79b45e1c58 /backends | |
parent | 2795f743db7e055e717512d376b4a1169b3997dd (diff) | |
download | scummvm-rg350-51e1438020d427d411c237d1c019340c621399e1.tar.gz scummvm-rg350-51e1438020d427d411c237d1c019340c621399e1.tar.bz2 scummvm-rg350-51e1438020d427d411c237d1c019340c621399e1.zip |
Separated the Dreamcast filesystem backend from the POSIX one.
svn-id: r22883
Diffstat (limited to 'backends')
-rw-r--r-- | backends/fs/dc/dc-fs.cpp | 180 | ||||
-rw-r--r-- | backends/fs/posix/posix-fs.cpp | 18 |
2 files changed, 182 insertions, 16 deletions
diff --git a/backends/fs/dc/dc-fs.cpp b/backends/fs/dc/dc-fs.cpp new file mode 100644 index 0000000000..7a3289e971 --- /dev/null +++ b/backends/fs/dc/dc-fs.cpp @@ -0,0 +1,180 @@ +/* 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. + * + * $URL$ + * $Id$ + */ + +#if defined(__DC__) + +#include "common/stdafx.h" + +#include "backends/fs/abstract-fs.h" +#include "backends/fs/fs.h" + +#include <ronin/cdfs.h> +#include <stdio.h> +#include <unistd.h> + +/* + * Implementation of the ScummVM file system API based on ronin. + */ + +class RoninCDFilesystemNode : public AbstractFilesystemNode { +protected: + String _displayName; + bool _isDirectory; + bool _isValid; + String _path; + +public: + RoninCDFilesystemNode(); + RoninCDFilesystemNode(const String &path, bool verify); + + virtual String displayName() const { return _displayName; } + virtual bool isValid() const { return _isValid; } + virtual bool isDirectory() const { return _isDirectory; } + virtual String path() const { return _path; } + + virtual bool listDir(AbstractFSList &list, ListMode mode) const; + virtual AbstractFilesystemNode *parent() const; + virtual AbstractFilesystemNode *child(const String &name) const; +}; + + +static const char *lastPathComponent(const Common::String &str) { + const char *start = str.c_str(); + const char *cur = start + str.size() - 2; + + while (cur > start && *cur != '/') { + --cur; + } + + return cur + 1; +} + +AbstractFilesystemNode *AbstractFilesystemNode::getCurrentDirectory() { + // Since there is no way to _set_ the current directory, + // it will always be /... + + return getRoot(); +} + +AbstractFilesystemNode *AbstractFilesystemNode::getRoot() { + return new RoninCDFilesystemNode(); +} + +AbstractFilesystemNode *AbstractFilesystemNode::getNodeForPath(const String &path) { + return new RoninCDFilesystemNode(path, true); +} + +RoninCDFilesystemNode::RoninCDFilesystemNode() { + // The root dir. + _path = "/"; + _displayName = _path; + _isValid = true; + _isDirectory = true; +} + +RoninCDFilesystemNode::RoninCDFilesystemNode(const String &p, bool verify) { + assert(p.size() > 0); + + _path = p; + _displayName = lastPathComponent(_path); + _isValid = true; + _isDirectory = true; + + if (verify) { + int fd; + + if((fd = open(_path.c_str(), O_RDONLY)) >= 0) { + close(fd); + _isDirectory = false; + } + else if((fd = open(_path.c_str(), O_DIR|O_RDONLY)) >= 0) { + close(fd); + } + else { + _isValid = false; + } + } +} + +bool RoninCDFilesystemNode::listDir(AbstractFSList &myList, ListMode mode) const { + assert(_isDirectory); + DIR *dirp = opendir(_path.c_str()); + + struct dirent *dp; + + if (dirp == NULL) + return false; + + // ... loop over dir entries using readdir + while ((dp = readdir(dirp)) != NULL) { + String newPath(_path); + if (newPath.lastChar() != '/') + newPath += '/'; + newPath += dp->d_name; + + RoninCDFilesystemNode entry(newPath, false); + + entry._isDirectory = dp->d_size < 0; + + // Skip files that are invalid for some reason (e.g. because we couldn't + // properly stat them). + if (!entry._isValid) + continue; + + // Honor the chosen mode + if ((mode == FilesystemNode::kListFilesOnly && entry._isDirectory) || + (mode == FilesystemNode::kListDirectoriesOnly && !entry._isDirectory)) + continue; + + if (entry._isDirectory) + entry._path += "/"; + myList.push_back(new RoninCDFilesystemNode(entry)); + } + closedir(dirp); + return true; +} + +AbstractFilesystemNode *RoninCDFilesystemNode::parent() const { + if (_path == "/") + return 0; + + const char *start = _path.c_str(); + const char *end = lastPathComponent(_path); + + RoninCDFilesystemNode *p = new RoninCDFilesystemNode(String(start, end - start), false); + + return p; +} + +AbstractFilesystemNode *RoninCDFilesystemNode::child(const String &name) const { + // FIXME: Pretty lame implementation! We do no error checking to speak + // of, do not check if this is a special node, etc. + assert(_isDirectory); + String newPath(_path); + if (_path.lastChar() != '/') + newPath += '/'; + newPath += name; + RoninCDFilesystemNode *p = new RoninCDFilesystemNode(newPath, true); + + return p; +} + +#endif // defined(__DC__) diff --git a/backends/fs/posix/posix-fs.cpp b/backends/fs/posix/posix-fs.cpp index c0914bdb43..3fa7711ccd 100644 --- a/backends/fs/posix/posix-fs.cpp +++ b/backends/fs/posix/posix-fs.cpp @@ -19,7 +19,7 @@ * $Id$ */ -#if defined(UNIX) || defined(__DC__) +#if defined(UNIX) #include "common/stdafx.h" @@ -31,9 +31,7 @@ #endif #include <sys/param.h> #include <sys/stat.h> -#ifndef __DC__ #include <dirent.h> -#endif #include <stdio.h> #include <unistd.h> @@ -126,19 +124,9 @@ POSIXFilesystemNode::POSIXFilesystemNode(const String &p, bool verify) { _isDirectory = true; if (verify) { -#ifdef __DC__ - /* - FIXME: Why should I need to add a lot of code - just to figure out if a path exists / is a directory here? - We should know what we want it to be, and when open / listDir - is called it will become apparent if it isn't. Just - checking for the sake of checking seems bogus to me. - */ -#else struct stat st; _isValid = (0 == stat(_path.c_str(), &st)); _isDirectory = _isValid ? S_ISDIR(st.st_mode) : false; -#endif } } @@ -164,9 +152,7 @@ bool POSIXFilesystemNode::listDir(AbstractFSList &myList, ListMode mode) const { POSIXFilesystemNode entry(newPath, false); -#ifdef __DC__ - entry._isDirectory = dp->d_size < 0; -#elif defined(SYSTEM_NOT_SUPPORTING_D_TYPE) +#if defined(SYSTEM_NOT_SUPPORTING_D_TYPE) // TODO: d_type is not part of POSIX, so it might not be supported // on some of our targets. For those systems where it isn't supported, // add this #elif case, which tries to use stat() instead. |