lyx_mirror/src/Thesaurus.cpp
Peter Kümmel 009e239108 fix linker error
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@27868 a592a061-630c-0410-9148-cb99ea01b6c8
2008-12-13 14:41:37 +00:00

298 lines
6.2 KiB
C++

/**
* \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 Jürgen Spitzmüller
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "Thesaurus.h"
#include "support/debug.h"
#include "support/gettext.h"
#include "LyXRC.h"
#include "support/FileNameList.h"
#include "support/filetools.h"
#include "support/lstrings.h"
#include "support/os.h"
#include "support/unicode.h"
#include "frontends/alert.h"
#include <algorithm>
#include <cstring>
using namespace std;
using namespace lyx::support;
using namespace lyx::support::os;
namespace lyx {
#ifndef HAVE_LIBMYTHES
#ifdef HAVE_LIBAIKSAURUS
Thesaurus::Thesaurus()
: thes_(new Aiksaurus)
{}
Thesaurus::~Thesaurus()
{
delete thes_;
}
Thesaurus::Meanings Thesaurus::lookup(docstring const & t, docstring const &)
{
Meanings meanings;
// aiksaurus is for english text only, therefore it does not work
// with non-ascii strings.
// The interface of the Thesaurus class uses docstring because a
// non-english thesaurus is possible in theory.
if (!support::isAscii(t))
// to_ascii() would assert
return meanings;
string const text = to_ascii(t);
docstring error = from_ascii(thes_->error());
if (!error.empty()) {
static bool sent_error = false;
if (!sent_error) {
frontend::Alert::error(_("Thesaurus failure"),
bformat(_("Aiksaurus returned the following error:\n\n%1$s."),
error));
sent_error = true;
}
return meanings;
}
if (!thes_->find(text.c_str()))
return meanings;
// weird api, but ...
int prev_meaning = -1;
int cur_meaning;
docstring meaning;
// correct, returns "" at the end
string ret = thes_->next(cur_meaning);
while (!ret.empty()) {
if (cur_meaning != prev_meaning) {
meaning = from_ascii(ret);
ret = thes_->next(cur_meaning);
prev_meaning = cur_meaning;
} else {
if (ret != text)
meanings[meaning].push_back(from_ascii(ret));
}
ret = thes_->next(cur_meaning);
}
for (Meanings::iterator it = meanings.begin();
it != meanings.end(); ++it)
sort(it->second.begin(), it->second.end());
return meanings;
}
bool Thesaurus::thesaurusAvailable(docstring const & lang) const
{
// we support English only
return prefixIs(lang, from_ascii("en_"));
}
#endif // HAVE_LIBAIKSAURUS
#endif // !HAVE_LIBMYTHES
#ifdef HAVE_LIBMYTHES
namespace {
string const to_iconv_encoding(docstring const & s, string const & encoding)
{
std::vector<char> const encoded =
ucs4_to_eightbit(s.data(), s.length(), encoding);
return string(encoded.begin(), encoded.end());
}
docstring const from_iconv_encoding(string const & s, string const & encoding)
{
std::vector<char_type> const ucs4 =
eightbit_to_ucs4(s.data(), s.length(), encoding);
return docstring(ucs4.begin(), ucs4.end());
}
} // namespace anon
Thesaurus::Thesaurus()
{}
Thesaurus::~Thesaurus()
{
for (Thesauri::iterator it = thes_.begin();
it != thes_.end(); ++it) {
delete it->second;
}
}
bool Thesaurus::addThesaurus(docstring const & lang)
{
string const thes_path = external_path(lyxrc.thesaurusdir_path);
LYXERR(Debug::FILES, "thesaurus path: " << thes_path);
if (thes_path.empty())
return false;
if (thesaurusAvailable(lang))
return true;
FileNameList const idx_files = FileName(thes_path).dirList("idx");
FileNameList const data_files = FileName(thes_path).dirList("dat");
string idx;
string data;
for (FileNameList::const_iterator it = idx_files.begin();
it != idx_files.end(); ++it) {
LYXERR(Debug::FILES, "found thesaurus idx file: " << it->onlyFileName());
if (contains(it->onlyFileName(), to_ascii(lang))) {
idx = it->absFilename();
LYXERR(Debug::FILES, "selected thesaurus idx file: " << idx);
break;
}
}
for (support::FileNameList::const_iterator it = data_files.begin();
it != data_files.end(); ++it) {
LYXERR(Debug::FILES, "found thesaurus data file: " << it->onlyFileName());
if (contains(it->onlyFileName(), to_ascii(lang))) {
data = it->absFilename();
LYXERR(Debug::FILES, "selected thesaurus data file: " << data);
break;
}
}
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
{
for (Thesauri::const_iterator it = thes_.begin();
it != thes_.end(); ++it) {
if (it->first == lang)
if (it->second)
return true;
}
return false;
}
Thesaurus::Meanings Thesaurus::lookup(docstring const & t, docstring const & lang)
{
Meanings meanings;
MyThes * mythes = 0;
if (!addThesaurus(lang))
return meanings;
for (Thesauri::const_iterator it = thes_.begin();
it != 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;
docstring ret;
for (int i = 0; i < count; i++) {
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 = from_iconv_encoding(string(pm->psyns[j]), encoding);
}
meanings[meaning].push_back(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;
}
#else
#ifndef HAVE_LIBAIKSAURUS
Thesaurus::Thesaurus()
{
}
Thesaurus::~Thesaurus()
{
}
Thesaurus::Meanings Thesaurus::lookup(docstring const &, docstring const &)
{
return Meanings();
}
bool Thesaurus::thesaurusAvailable(docstring const & lang) const
{
return false;
}
#endif
#endif // HAVE_LIBMYTHES
// Global instance
Thesaurus thesaurus;
} // namespace lyx