libtocc::FileInfo FSHandler::get_by_path(std::string path)
{
// First, we check if the specified path matches exactly with a
// Traditional Path. If it is, we return that file.
// Then, we check if the path contains tags and title of a file. We assume
// each directory in the path is a tag, and the last element is title of
// a file. If it matches a single file, we return that.
/*
* First try: Checking if path exactly matches a Traditional Path.
*/
// TODO: First, check the traditional path.
/*
* Second try: Last element is the file title and others are tags.
*/
std::vector<std::string> path_items = split_string(path, '/');
if (path_items.empty())
{
// Returning a NULL file info.
return get_empty_file_info();
}
// Assume the last element is the file title.
libtocc::Title title_expr(path_items.back().c_str());
path_items.pop_back();
libtocc::And main_and(title_expr);
if (!path_items.empty())
{
// Each of the items considered a tag.
std::vector<std::string>::iterator path_items_iterator = path_items.begin();
for (; path_items_iterator != path_items.end(); path_items_iterator++)
{
libtocc::Tag tag_expr(path_items_iterator->c_str());
main_and.add(tag_expr);
}
}
// Executing the query.
libtocc::Query second_query(main_and);
libtocc::FileInfoCollection second_query_result =
this->libtocc_manager->search_files(second_query);
if (second_query_result.size() == 1)
{
// If exactly one file found, this is what we wanted.
libtocc::FileInfoCollection::Iterator query_result_iterator(&second_query_result);
// Copying the pointer.
libtocc::FileInfo result(*query_result_iterator.get());
return result;
}
// Nothing found. Returning a NULL FileInfo.
return get_empty_file_info();
}
std::vector<libtocc::FileInfo> FSHandler::query_by_path(std::string path)
{
// We assume that each element of the path is a tag, and return
// everything matches with it.
std::vector<std::string> path_items = split_string(path, '/');
// The previous step didn't find the correct result. Now, assuming
// that all the elements in path are tags.
std::vector<std::string>::iterator path_items_iterator = path_items.begin();
// Adding first element to the And.
libtocc::Tag first_tag(path_items_iterator->c_str());
libtocc::And third_main_and(first_tag);
path_items_iterator++;
for (; path_items_iterator != path_items.end(); path_items_iterator++)
{
if (*path_items_iterator == ".." || *path_items_iterator == ".")
{
// Ignore . or ..
continue;
}
libtocc::Tag tag_expr(path_items_iterator->c_str());
third_main_and.add(tag_expr);
}
// Executing the query.
libtocc::Query third_query(third_main_and);
libtocc::FileInfoCollection third_query_result =
this->libtocc_manager->search_files(third_query);
if (third_query_result.size() > 0)
{
std::vector<libtocc::FileInfo> result;
libtocc::FileInfoCollection::Iterator query_result_iterator(&third_query_result);
for (; !query_result_iterator.is_finished(); query_result_iterator.next())
{
result.push_back(*query_result_iterator.get());
}
return result;
}
// Nothing found? Returning an empty result.
std::vector<libtocc::FileInfo> result;
return result;
}
libtocc::FileInfo FSHandler::get_by_path(std::string path)
{
// First, we check if the specified path matches exactly with a
// Traditional Path. If it is, we return that file.
// Then, we check if the path contains tags and title of a file. We assume
// each directory in the path is a tag, and the last element is title of
// a file. If it matches a single file, we return that.
/*
* First try: Checking if path exactly matches a Traditional Path.
*/
// FIXME: The following block is commented, because of a bug in Unqlite:
// If database become big, this cause Segfault in UnQlite.
// try
// {
// libtocc::FileInfo result =
// this->libtocc_manager->get_file_by_traditional_path(path.c_str());
//
// return result;
// }
// catch (libtocc::DatabaseScriptLogicalError& error)
// {
// // Nothing found.
// }
/*
* Second try: Last element is the file title and others are tags.
*/
std::vector<std::string> path_items = split_string(path, '/');
if (path_items.empty())
{
// Returning a NULL file info.
return get_empty_file_info();
}
// Assume the last element is the file title.
libtocc::Title title_expr(path_items.back().c_str());
path_items.pop_back();
libtocc::And main_and(title_expr);
if (!path_items.empty())
{
// Each of the items considered a tag.
std::vector<std::string>::iterator path_items_iterator = path_items.begin();
for (; path_items_iterator != path_items.end(); path_items_iterator++)
{
if (*path_items_iterator == ".." || *path_items_iterator == ".")
{
// Ignore . or ..
continue;
}
libtocc::Tag tag_expr(path_items_iterator->c_str());
main_and.add(tag_expr);
}
}
// Executing the query.
libtocc::Query second_query(main_and);
libtocc::FileInfoCollection second_query_result =
this->libtocc_manager->search_files(second_query);
if (second_query_result.size() == 1)
{
// If exactly one file found, this is what we wanted.
libtocc::FileInfoCollection::Iterator query_result_iterator(&second_query_result);
// Copying the pointer.
libtocc::FileInfo result(*query_result_iterator.get());
return result;
}
// Nothing found. Returning a NULL FileInfo.
return get_empty_file_info();
}