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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.
*
*/
// Re-enable some forbidden symbols to avoid clashes with stat.h and unistd.h.
#define FORBIDDEN_SYMBOL_EXCEPTION_unistd_h
#define FORBIDDEN_SYMBOL_EXCEPTION_mkdir
#include "common/scummsys.h"
#if defined(RISCOS)
#include "backends/platform/sdl/riscos/riscos-utils.h"
#include "backends/fs/riscos/riscos-fs.h"
#include "backends/fs/stdiostream.h"
#include "common/algorithm.h"
#include <limits.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <unixlib/local.h>
#include <kernel.h>
#include <swis.h>
bool RISCOSFilesystemNode::exists() const {
return access(_path.c_str(), F_OK) == 0;
}
bool RISCOSFilesystemNode::isReadable() const {
return access(_path.c_str(), R_OK) == 0;
}
bool RISCOSFilesystemNode::isWritable() const {
return access(_path.c_str(), W_OK) == 0;
}
void RISCOSFilesystemNode::setFlags() {
int type = _swi(OS_File, _INR(0,1)|_RETURN(0), 20, RISCOS_Utils::toRISCOS(_path).c_str());
if (type == 0) {
_isDirectory = false;
_isValid = false;
} else if (type == 2) {
_isDirectory = true;
_isValid = true;
} else {
_isDirectory = false;
_isValid = true;
}
}
RISCOSFilesystemNode::RISCOSFilesystemNode(const Common::String &p) {
_path = p;
if (p == "/") {
_isDirectory = true;
_isValid = true;
} else {
setFlags();
}
}
AbstractFSNode *RISCOSFilesystemNode::getChild(const Common::String &n) const {
assert(!_path.empty());
assert(_isDirectory);
// Make sure the string contains no slashes
assert(!n.contains('/'));
// We assume here that _path is already normalized (hence don't bother to call
// Common::normalizePath on the final path).
Common::String newPath(_path);
if (_path.lastChar() != '/')
newPath += '/';
newPath += n;
return makeNode(newPath);
}
bool RISCOSFilesystemNode::getChildren(AbstractFSList &myList, ListMode mode, bool hidden) const {
assert(_isDirectory);
if (_path == "/") {
// Special case for the root dir: List all drives
char fsname[PATH_MAX] = "";
for (int fsNum = 0; fsNum < 256; fsNum += 1) {
_swi(OS_FSControl, _INR(0,3), 33, fsNum, fsname, sizeof(fsname));
if (strcmp(fsname, "") != 0) {
if (!(fsNum == 46 || fsNum == 53 || fsNum == 99)) {
int drives = 9;
if (fsNum == 193)
drives = 23;
for (int discnum = 0; discnum <= drives; discnum += 1) {
const Common::String path = Common::String::format("%s::%d.$", fsname, discnum);
char outpath[PATH_MAX] = "";
if(_swix(OS_FSControl, _INR(0,2)|_IN(5), 37, path.c_str(), outpath, sizeof(outpath)) == NULL) {
int exist;
if (_swix(OS_File, _INR(0,1)|_OUT(0), 23, outpath, &exist) != NULL || exist != 2)
continue;
RISCOSFilesystemNode *entry = new RISCOSFilesystemNode();
entry->_isDirectory = true;
entry->_isValid = true;
entry->_path = Common::String::format("/%s", outpath);
entry->_displayName = outpath;
myList.push_back(entry);
}
}
}
}
}
return true;
}
int count = 0;
int read = 0;
char file[PATH_MAX];
Common::String dir = _path;
while (count != -1) {
_swix(OS_GBPB, _INR(0,5)|_OUTR(3,4), 9, RISCOS_Utils::toRISCOS(dir).c_str(), file, 1, count, sizeof(file), &read, &count);
if (count == -1)
continue;
// Start with a clone of this node, with the correct path set
RISCOSFilesystemNode entry(*this);
entry._displayName = file;
entry._displayName = RISCOS_Utils::toUnix(entry._displayName);
if (_path.lastChar() != '/')
entry._path += '/';
entry._path += entry._displayName;
int type = _swi(OS_File, _INR(0,1)|_RETURN(0), 20, RISCOS_Utils::toRISCOS(entry._path).c_str());
if (type == 0) {
continue;
} else if (type == 2) {
entry._isDirectory = true;
} else {
entry._isDirectory = false;
}
// Honor the chosen mode
if ((mode == Common::FSNode::kListFilesOnly && entry._isDirectory) ||
(mode == Common::FSNode::kListDirectoriesOnly && !entry._isDirectory))
continue;
myList.push_back(new RISCOSFilesystemNode(entry));
}
return true;
}
AbstractFSNode *RISCOSFilesystemNode::getParent() const {
if (_path == "/")
return 0; // The filesystem root has no parent
const char *start = _path.c_str();
const char *end = start + _path.size();
// Strip of the last component. We make use of the fact that at this
// point, _path is guaranteed to be normalized
while (end > start && *(end-1) != '/')
end--;
if (end == start) {
// This only happens if we were called with a relative path, for which
// there simply is no parent.
// TODO: We could also resolve this by assuming that the parent is the
// current working directory, and returning a node referring to that.
return 0;
}
if (*(end-1) == '/' && end != start + 1)
end--;
return makeNode(Common::String(start, end));
}
Common::SeekableReadStream *RISCOSFilesystemNode::createReadStream() {
return StdioStream::makeFromPath(getPath(), false);
}
Common::WriteStream *RISCOSFilesystemNode::createWriteStream() {
return StdioStream::makeFromPath(getPath(), true);
}
bool RISCOSFilesystemNode::createDirectory() {
if (_swix(OS_File, _INR(0,1), 8, RISCOS_Utils::toRISCOS(_path).c_str()) == NULL)
setFlags();
return _isValid && _isDirectory;
}
namespace Riscos {
bool assureDirectoryExists(const Common::String &dir, const char *prefix) {
AbstractFSNode *node;
// Check whether the prefix exists if one is supplied.
if (prefix) {
node = new RISCOSFilesystemNode(prefix);
if (!node->isDirectory()) {
return false;
}
}
// Obtain absolute path.
Common::String path;
if (prefix) {
path = prefix;
path += '/';
path += dir;
} else {
path = dir;
}
path = Common::normalizePath(path, '/');
const Common::String::iterator end = path.end();
Common::String::iterator cur = path.begin();
if (*cur == '/')
++cur;
do {
if (cur + 1 != end) {
if (*cur != '/') {
continue;
}
// It is kind of ugly and against the purpose of Common::String to
// insert 0s inside, but this is just for a local string and
// simplifies the code a lot.
*cur = '\0';
}
node = new RISCOSFilesystemNode(path);
if (!node->createDirectory()) {
if (node->exists()) {
if (!node->isDirectory()) {
return false;
}
} else {
return false;
}
}
*cur = '/';
} while (cur++ != end);
return true;
}
} // End of namespace RISCOS
#endif //#if defined(RISCOS)
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