VolumeList* MultiVolumeReader::read(const std::string& url)
throw (tgt::FileException, std::bad_alloc)
{
LINFO("Loading multi volume file " << url);
VolumeURL urlOrigin(url);
std::vector<VolumeURL> origins = listVolumes(url);
if (origins.empty())
throw tgt::FileException("No volumes listed in multi-volume file", url);
VolumeList* volumeList = new VolumeList();
std::string refFile = urlOrigin.getSearchParameter("file");
if (refFile == "") {
// no particular file specified in URL => load all listed ones
for (size_t i=0; i<origins.size(); i++) {
VolumeBase* handle = read(origins.at(i));
if (handle)
volumeList->add(handle);
}
}
else {
// load specified file
for (size_t i=0; i<origins.size(); i++) {
if (origins.at(i).getSearchParameter("file") == refFile) {
VolumeBase* handle = read(origins.at(i));
if (handle) {
volumeList->add(handle);
break;
}
}
}
if (volumeList->empty()) {
delete volumeList;
throw tgt::FileException("File '" + refFile + "' not listed in multi-volume file", urlOrigin.getPath());
}
}
return volumeList;
}
bool AmigaOSFilesystemNode::getChildren(AbstractFSList &myList, ListMode mode, bool hidden) const {
ENTER();
bool ret = false;
// TODO: Honor the hidden flag
// There is no such thing as a hidden flag in AmigaOS...
if (!_bIsValid) {
debug(6, "Invalid node");
LEAVE();
return false; // Empty list
}
if (!_bIsDirectory) {
debug(6, "Not a directory");
LEAVE();
return false; // Empty list
}
if (isRootNode()) {
debug(6, "Root node");
LEAVE();
myList = listVolumes();
return true;
}
APTR context = IDOS->ObtainDirContextTags( EX_FileLockInput, _pFileLock,
EX_DoCurrentDir, TRUE, /* for softlinks */
EX_DataFields, (EXF_NAME|EXF_LINK|EXF_TYPE),
TAG_END);
if (context) {
struct ExamineData * pExd = NULL; // NB: No need to free the value after usage, everything will be dealt with by the DirContext release
AmigaOSFilesystemNode *entry ;
while ( (pExd = IDOS->ExamineDir(context)) ) {
if ( (EXD_IS_FILE(pExd) && ( Common::FSNode::kListFilesOnly == mode ))
|| (EXD_IS_DIRECTORY(pExd) && ( Common::FSNode::kListDirectoriesOnly == mode ))
|| Common::FSNode::kListAll == mode
)
{
BPTR pLock = IDOS->Lock( pExd->Name, SHARED_LOCK );
if (pLock) {
entry = new AmigaOSFilesystemNode( pLock, pExd->Name );
if (entry) {
myList.push_back(entry);
}
IDOS->UnLock(pLock);
}
}
}
if (ERROR_NO_MORE_ENTRIES != IDOS->IoErr() ) {
debug(6, "An error occurred during ExamineDir");
ret = false;
} else {
ret = true;
}
IDOS->ReleaseDirContext(context);
} else {
debug(6, "Unable to ObtainDirContext");
ret = false;
}
LEAVE();
return ret;
}
