Aegisub/src/thesaurus.cpp

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// Copyright (c) 2012, Thomas Goyne <plorkyeran@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// Aegisub Project http://www.aegisub.org/
/// @file thesaurus.cpp
/// @brief Thesaurus implementation
/// @ingroup thesaurus
///
#include "thesaurus.h"
#include "options.h"
#include <libaegisub/dispatch.h>
#include <libaegisub/format.h>
#include <libaegisub/fs.h>
#include <libaegisub/log.h>
#include <libaegisub/make_unique.h>
#include <libaegisub/path.h>
#include <libaegisub/thesaurus.h>
#include <boost/algorithm/string/case_conv.hpp>
#include <boost/range/algorithm.hpp>
Thesaurus::Thesaurus()
: lang_listener(OPT_SUB("Tool/Thesaurus/Language", &Thesaurus::OnLanguageChanged, this))
, dict_path_listener(OPT_SUB("Path/Dictionary", &Thesaurus::OnPathChanged, this))
{
OnLanguageChanged();
}
Thesaurus::~Thesaurus() {
if (cancel_load) *cancel_load = true;
}
std::vector<Thesaurus::Entry> Thesaurus::Lookup(std::string word) {
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if (!impl) return {};
boost::to_lower(word);
return impl->Lookup(word);
}
static std::vector<std::string> langs(const char *ext) {
std::vector<std::string> paths;
auto data_path = config::path->Decode("?data/dictionaries/");
auto user_path = config::path->Decode(OPT_GET("Path/Dictionary")->GetString());
auto filter = std::string("th_*.") + ext;
agi::fs::DirectoryIterator(data_path, filter).GetAll(paths);
agi::fs::DirectoryIterator(user_path, filter).GetAll(paths);
// Drop extensions and the th_ prefix
for (auto& fn : paths) fn = fn.substr(3, fn.size() - filter.size() + 1);
boost::sort(paths);
paths.erase(unique(begin(paths), end(paths)), end(paths));
return paths;
}
std::vector<std::string> Thesaurus::GetLanguageList() const {
if (languages.empty())
boost::set_intersection(langs("idx"), langs("dat"), back_inserter(languages));
return languages;
}
static bool check_path(agi::fs::path const& path, std::string const& language, agi::fs::path& idx, agi::fs::path& dat) {
idx = path/agi::format("th_%s.idx", language);
dat = path/agi::format("th_%s.dat", language);
return agi::fs::FileExists(idx) && agi::fs::FileExists(dat);
}
void Thesaurus::OnLanguageChanged() {
impl.reset();
auto language = OPT_GET("Tool/Thesaurus/Language")->GetString();
if (language.empty()) return;
agi::fs::path idx, dat;
auto path = config::path->Decode(OPT_GET("Path/Dictionary")->GetString() + "/");
if (!check_path(path, language, idx, dat)) {
path = config::path->Decode("?data/dictionaries/");
if (!check_path(path, language, idx, dat))
return;
}
LOG_I("thesaurus/file") << "Using thesaurus: " << dat;
if (cancel_load) *cancel_load = true;
cancel_load = new bool{false};
auto cancel = cancel_load; // Needed to avoid capturing via `this`
agi::dispatch::Background().Async([=]{
try {
auto thes = agi::make_unique<agi::Thesaurus>(dat, idx);
agi::dispatch::Main().Sync([&thes, cancel, this]{
if (!*cancel) {
impl = std::move(thes);
cancel_load = nullptr;
}
delete cancel;
});
}
catch (agi::Exception const& e) {
LOG_E("thesaurus") << e.GetMessage();
}
});
}
void Thesaurus::OnPathChanged() {
languages.clear();
}