/lyx-2.0.4/src/Thesaurus.cpp
C++ | 267 lines | 194 code | 50 blank | 23 comment | 44 complexity | db8ff41e638286cea0d8840c3894a321 MD5 | raw file
Possible License(s): LGPL-2.0, GPL-2.0
- /**
- * \file Thesaurus.cpp
- * This file is part of LyX, the document processor.
- * Licence details can be found in the file COPYING.
- *
- * \author John Levon
- * \author J?rgen Spitzm?ller
- *
- * Full author contact details are available in file CREDITS.
- */
- #include <config.h>
- #include "Thesaurus.h"
- #include "LyXRC.h"
- #include "support/FileNameList.h"
- #include "support/Package.h"
- #include "support/debug.h"
- #include "support/filetools.h"
- #include "support/gettext.h"
- #include "support/lstrings.h"
- #include "support/os.h"
- #ifdef USE_EXTERNAL_MYTHES
- #include MYTHES_H_LOCATION
- #else
- #include <cstdio>
- #include "support/mythes/mythes.hxx"
- #endif
- #include "frontends/alert.h"
- #include <algorithm>
- #include <cstring>
- #include <fstream>
- using namespace std;
- using namespace lyx::support;
- using namespace lyx::support::os;
- namespace lyx {
- namespace {
- typedef std::map<docstring, MyThes *> Thesauri;
- } // namespace anon
- struct Thesaurus::Private
- {
- ~Private()
- {
- for (Thesauri::iterator it = thes_.begin();
- it != thes_.end(); ++it) {
- delete it->second;
- }
- }
- ///
- bool thesaurusAvailable(docstring const & lang) const
- {
- for (Thesauri::const_iterator it = thes_.begin();
- it != thes_.end(); ++it) {
- if (it->first == lang)
- if (it->second)
- return true;
- }
- return false;
- }
- ///
- typedef std::pair<std::string, std::string> ThesFiles;
- ///
- ThesFiles getThesaurus(string const & path, docstring const & lang);
- ThesFiles getThesaurus(docstring const & lang);
- /// add a thesaurus to the list
- bool addThesaurus(docstring const & lang);
- /// the thesauri
- Thesauri thes_;
- /// the location below system/user directory
- /// there the data+idx files lookup will happen
- const string dataDirectory(void) { return "thes"; }
- };
- pair<string,string> Thesaurus::Private::getThesaurus(string const & path, docstring const & lang)
- {
- FileName base(path);
- if (!base.isDirectory()) {
- return make_pair(string(), string());
- }
- FileNameList const idx_files = base.dirList("idx");
- FileNameList const data_files = base.dirList("dat");
- string idx;
- string data;
- string basename;
- LYXERR(Debug::FILES, "thesaurus path: " << path);
- for (FileNameList::const_iterator it = idx_files.begin(); it != idx_files.end(); ++it) {
- basename = it->onlyFileNameWithoutExt();
- if (contains(basename, to_ascii(lang))) {
- ifstream ifs(it->absFileName().c_str());
- if (ifs) {
- // check for appropriate version of index file
- string encoding; // first line is encoding
- int items = 0; // second line is no. of items
- getline(ifs,encoding);
- ifs >> items;
- if (ifs.fail()) {
- LYXERR(Debug::FILES, "ignore irregular thesaurus idx file: " << it->absFileName());
- continue;
- }
- if (encoding.length() == 0 || encoding.find_first_of(',') != string::npos) {
- LYXERR(Debug::FILES, "ignore version1 thesaurus idx file: " << it->absFileName());
- continue;
- }
- }
- idx = it->absFileName();
- LYXERR(Debug::FILES, "selected thesaurus idx file: " << idx);
- break;
- }
- }
- if (idx.empty()) {
- return make_pair(string(), string());
- }
- for (support::FileNameList::const_iterator it = data_files.begin(); it != data_files.end(); ++it) {
- if (contains(it->onlyFileName(), basename)) {
- data = it->absFileName();
- LYXERR(Debug::FILES, "selected thesaurus data file: " << data);
- break;
- }
- }
- return make_pair(idx, data);
- }
- pair<string,string> Thesaurus::Private::getThesaurus(docstring const & lang)
- {
- string const thes_path = external_path(lyxrc.thesaurusdir_path);
- pair<string,string> result ;
- if (thesaurusAvailable(lang))
- return make_pair(string(), string());
- if (!thes_path.empty()) {
- result = getThesaurus(thes_path, lang);
- }
- if (result.first.empty() || result.second.empty()) {
- string const sys_path = external_path(addName(lyx::support::package().system_support().absFileName(),dataDirectory())) ;
- result = getThesaurus(sys_path, lang);
- }
- if (result.first.empty() || result.second.empty()) {
- string const user_path = external_path(addName(lyx::support::package().user_support().absFileName(),dataDirectory())) ;
- result = getThesaurus(user_path, lang);
- }
- return result;
- }
- bool Thesaurus::Private::addThesaurus(docstring const & lang)
- {
- if (thesaurusAvailable(lang))
- return true;
- ThesFiles files = getThesaurus(lang);
- string const idx = files.first;
- string const data = files.second;
- if (idx.empty() || data.empty())
- return false;
- char const * af = idx.c_str();
- char const * df = data.c_str();
- thes_[lang] = new MyThes(af, df);
- return true;
- }
- bool Thesaurus::thesaurusAvailable(docstring const & lang) const
- {
- return d->thesaurusAvailable(lang);
- }
- bool Thesaurus::thesaurusInstalled(docstring const & lang) const
- {
- if (thesaurusAvailable(lang))
- return true;
- pair<string, string> files = d->getThesaurus(lang);
- return (!files.first.empty() && !files.second.empty());
- }
- Thesaurus::Meanings Thesaurus::lookup(docstring const & t, docstring const & lang)
- {
- Meanings meanings;
- MyThes * mythes = 0;
- if (!d->addThesaurus(lang))
- return meanings;
- for (Thesauri::const_iterator it = d->thes_.begin();
- it != d->thes_.end(); ++it) {
- if (it->first == lang) {
- mythes = it->second;
- break;
- }
- }
- if (!mythes)
- return meanings;
- string const encoding = mythes->get_th_encoding();
-
- mentry * pmean;
- string const text = to_iconv_encoding(support::lowercase(t), encoding);
- int len = strlen(text.c_str());
- int count = mythes->Lookup(text.c_str(), len, &pmean);
- if (!count)
- return meanings;
- // don't change value of pmean or count
- // they are needed for the CleanUpAfterLookup routine
- mentry * pm = pmean;
- docstring meaning;
- for (int i = 0; i < count; i++) {
- vector<docstring> ret;
- meaning = from_iconv_encoding(string(pm->defn), encoding);
- // remove silly item
- if (support::prefixIs(meaning, '-'))
- meaning = support::ltrim(meaning, "- ");
- for (int j = 0; j < pm->count; j++) {
- ret.push_back(from_iconv_encoding(string(pm->psyns[j]), encoding));
- }
- meanings[meaning] = ret;
- ++pm;
- }
- // now clean up all allocated memory
- mythes->CleanUpAfterLookup(&pmean, count);
- for (Meanings::iterator it = meanings.begin();
- it != meanings.end(); ++it)
- sort(it->second.begin(), it->second.end());
- return meanings;
- }
- Thesaurus::Thesaurus() : d(new Thesaurus::Private)
- {
- }
- Thesaurus::~Thesaurus()
- {
- delete d;
- }
- // Global instance
- Thesaurus thesaurus;
- } // namespace lyx