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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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#include "ags/shared/util/stdio_compat.h"
#include "ags/shared/core/platform.h"
#include "ags/shared/util/directory.h"
#include "common/config-manager.h"
#include "common/system.h"
#include "common/file.h"
#include "common/fs.h"
#include "common/savefile.h"
#include "common/textconsole.h"
namespace AGS3 {
int ags_fseek(Common::Stream *stream, file_off_t offset, int whence) {
Common::SeekableReadStream *rs = dynamic_cast<Common::SeekableReadStream *>(stream);
Common::SeekableWriteStream *ws = dynamic_cast<Common::SeekableWriteStream *>(stream);
if (rs)
return rs->seek(offset, whence) ? 0 : 1;
else if (ws)
return ws->seek(offset, whence) ? 0 : 1;
else
error("Seek on null stream");
}
file_off_t ags_ftell(Common::Stream *stream) {
Common::SeekableReadStream *rs = dynamic_cast<Common::SeekableReadStream *>(stream);
Common::SeekableWriteStream *ws = dynamic_cast<Common::SeekableWriteStream *>(stream);
assert(rs || ws);
return rs ? rs->pos() : ws->pos();
}
static Common::FSNode getFSNode(const char *path) {
Common::FSNode node;
Common::String filePath(path);
if (filePath.empty() || filePath == "." || filePath == "./")
return Common::FSNode(ConfMan.getPath("path"));
else if (filePath.hasPrefix("./")) {
filePath = filePath.substr(2);
node = Common::FSNode(ConfMan.getPath("path"));
} else if (filePath.hasPrefixIgnoreCase(AGS::Shared::SAVE_FOLDER_PREFIX)) {
filePath = filePath.substr(strlen(AGS::Shared::SAVE_FOLDER_PREFIX));
node = Common::FSNode(ConfMan.getPath("savepath"));
} else {
node = Common::FSNode(Common::Path(filePath, '/'));
if (node.isReadable())
return node;
node = Common::FSNode(ConfMan.getPath("path"));
}
// Use FSDirectory for case-insensitive search
Common::SharedPtr<Common::FSDirectory> dir(new Common::FSDirectory(node));
// Iterate through any further subfolders or filename
size_t separator;
while ((separator = filePath.find('/')) != Common::String::npos) {
Common::Path member(filePath.substr(0, separator));
dir.reset(dir->getSubDirectory(member));
if (!dir)
return Common::FSNode();
filePath = Common::String(filePath.c_str() + separator + 1);
}
if (filePath.empty())
return dir->getFSNode();
Common::Path member(filePath);
if (dir->hasFile(member)) {
Common::ArchiveMemberPtr file = dir->getMember(member);
if (file)
return dir->getFSNode().getChild(file->getName());
}
Common::FSDirectory *subDir = dir->getSubDirectory(member);
if (subDir) {
dir.reset(subDir);
return dir->getFSNode();
}
// The files does not exist, but create the FSNode anyway so that
// the code using this can report the correct error rather than assert.
return dir->getFSNode().getChild(filePath);
}
Common::ArchiveMemberPtr getFile(const char *path) {
Common::ArchiveMemberPtr archMember = SearchMan.getMember(path);
if (archMember)
return archMember;
Common::FSNode node(getFSNode(path));
if (!node.exists())
return Common::ArchiveMemberPtr();
return Common::ArchiveMemberPtr(new Common::FSNode(node));
}
int ags_file_exists(const char *path) {
Common::String sPath(path);
if (sPath.hasPrefix(AGS::Shared::SAVE_FOLDER_PREFIX)) {
sPath = path + strlen(AGS::Shared::SAVE_FOLDER_PREFIX);
Common::InSaveFile *saveFile = g_system->getSavefileManager()->openForLoading(sPath);
bool result = saveFile != nullptr;
delete saveFile;
return result ? 1 : 0;
} else {
if (SearchMan.hasFile(path))
return 1;
Common::FSNode node = getFSNode(path);
return node.exists() && !node.isDirectory() ? 1 : 0;
}
}
int ags_directory_exists(const char *path) {
Common::FSNode node = getFSNode(path);
return node.exists() && node.isDirectory() ? 1 : 0;
}
int ags_path_exists(const char *path) {
if (SearchMan.hasFile(path))
return 1;
Common::FSNode node = getFSNode(path);
return node.exists() ? 1 : 0;
}
file_off_t ags_file_size(const char *path) {
Common::ArchiveMemberPtr file(getFile(path));
Common::ScopedPtr<Common::SeekableReadStream> stream(file->createReadStream());
return stream ? stream->size() : (file_off_t)-1;
}
} // namespace AGS3
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