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https://git.lyx.org/repos/lyx.git
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456 lines
11 KiB
C++
456 lines
11 KiB
C++
/**
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* \file HunspellChecker.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Abdelrazak Younes
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "HunspellChecker.h"
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#include "PersonalWordList.h"
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#include "LyXRC.h"
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#include "WordLangTuple.h"
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#include "frontends/alert.h"
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#include "support/debug.h"
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#include "support/docstring_list.h"
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#include "support/filetools.h"
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#include "support/Package.h"
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#include "support/FileName.h"
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#include "support/gettext.h"
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#include "support/lassert.h"
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#include "support/lstrings.h"
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#include "support/os.h"
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#include <hunspell/hunspell.hxx>
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#include <map>
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#include <string>
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#include <vector>
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using namespace std;
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using namespace lyx::support;
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using namespace lyx::support::os;
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namespace lyx {
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namespace {
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typedef map<std::string, Hunspell *> Spellers;
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typedef map<std::string, PersonalWordList *> LangPersonalWordList;
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typedef vector<WordLangTuple> IgnoreList;
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} // anon namespace
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struct HunspellChecker::Private
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{
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Private();
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~Private();
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void cleanCache();
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void setUserPath(std::string const & path);
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const string dictPath(int selector);
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bool haveLanguageFiles(string const & hpath);
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bool haveDictionary(Language const * lang, string & hpath);
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bool haveDictionary(Language const * lang);
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int numDictionaries() const;
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Hunspell * addSpeller(Language const * lang, string & hpath);
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Hunspell * addSpeller(Language const * lang);
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Hunspell * speller(Language const * lang);
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/// ignored words
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bool isIgnored(WordLangTuple const & wl) const;
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/// personal word list interface
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void remove(WordLangTuple const & wl);
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void insert(WordLangTuple const & wl);
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bool learned(WordLangTuple const & wl);
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/// the spellers
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Spellers spellers_;
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///
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IgnoreList ignored_;
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///
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LangPersonalWordList personal_;
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///
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std::string user_path_;
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/// the location below system/user directory
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/// there the aff+dic files lookup will happen
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const string dictDirectory(void) const { return "dicts"; }
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int maxLookupSelector(void) const { return 5; }
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const string HunspellDictionaryName(Language const * lang) {
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return lang->variety().empty()
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? lang->code()
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: lang->code() + "-" + lang->variety();
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}
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const string myspellPackageDictDirectory(void) {
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return "/usr/share/myspell";
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}
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const string hunspellPackageDictDirectory(void) {
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return "/usr/share/hunspell";
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}
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};
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HunspellChecker::Private::Private()
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{
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setUserPath(lyxrc.hunspelldir_path);
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}
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HunspellChecker::Private::~Private()
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{
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cleanCache();
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}
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void HunspellChecker::Private::setUserPath(std::string const & path)
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{
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if (user_path_ != lyxrc.hunspelldir_path) {
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cleanCache();
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user_path_ = path;
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}
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}
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void HunspellChecker::Private::cleanCache()
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{
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Spellers::iterator it = spellers_.begin();
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Spellers::iterator end = spellers_.end();
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for (; it != end; ++it) {
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delete it->second;
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it->second = 0;
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}
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LangPersonalWordList::const_iterator pdit = personal_.begin();
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LangPersonalWordList::const_iterator pdet = personal_.end();
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for (; pdit != pdet; ++pdit) {
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if ( 0 == pdit->second)
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continue;
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PersonalWordList * pd = pdit->second;
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pd->save();
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delete pd;
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}
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}
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bool HunspellChecker::Private::haveLanguageFiles(string const & hpath)
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{
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FileName const affix(hpath + ".aff");
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FileName const dict(hpath + ".dic");
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return affix.isReadableFile() && dict.isReadableFile();
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}
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const string HunspellChecker::Private::dictPath(int selector)
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{
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switch (selector) {
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case 4:
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return hunspellPackageDictDirectory();
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case 3:
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return myspellPackageDictDirectory();
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case 2:
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return addName(package().system_support().absFileName(),dictDirectory());
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case 1:
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return addName(package().user_support().absFileName(),dictDirectory());
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default:
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return user_path_;
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}
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}
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bool HunspellChecker::Private::haveDictionary(Language const * lang, string & hpath)
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{
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if (hpath.empty())
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return false;
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LYXERR(Debug::FILES, "check hunspell path: " << hpath
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<< " for language " << (lang ? lang->lang() : "NULL" ));
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string h_path = addName(hpath, HunspellDictionaryName(lang));
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// first we try lang code+variety
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if (haveLanguageFiles(h_path)) {
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LYXERR(Debug::FILES, " found " << h_path);
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hpath = h_path;
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return true;
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}
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// another try with code, '_' replaced by '-'
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h_path = addName(hpath, subst(lang->code(), '_', '-'));
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if (!haveLanguageFiles(h_path))
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return false;
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LYXERR(Debug::FILES, " found " << h_path);
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hpath = h_path;
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return true;
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}
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bool HunspellChecker::Private::haveDictionary(Language const * lang)
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{
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bool result = false;
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setUserPath(lyxrc.hunspelldir_path);
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for (int p = 0; !result && p < maxLookupSelector(); ++p) {
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string lpath = dictPath(p);
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result = haveDictionary(lang, lpath);
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}
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// FIXME: if result is false...
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// we should indicate somehow that this language is not
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// supported, probably by popping a warning. But we'll need to
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// remember which warnings we've issued.
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return result;
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}
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Hunspell * HunspellChecker::Private::speller(Language const * lang)
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{
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setUserPath(lyxrc.hunspelldir_path);
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Spellers::iterator it = spellers_.find(lang->lang());
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if (it != spellers_.end())
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return it->second;
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return addSpeller(lang);
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}
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Hunspell * HunspellChecker::Private::addSpeller(Language const * lang,string & path)
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{
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if (!haveDictionary(lang, path)) {
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spellers_[lang->lang()] = 0;
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return 0;
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}
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FileName const affix(path + ".aff");
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FileName const dict(path + ".dic");
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Hunspell * h = new Hunspell(affix.absFileName().c_str(), dict.absFileName().c_str());
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LYXERR(Debug::FILES, "Hunspell speller for langage " << lang << " at " << dict << " found");
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spellers_[lang->lang()] = h;
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return h;
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}
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Hunspell * HunspellChecker::Private::addSpeller(Language const * lang)
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{
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Hunspell * h = 0;
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for (int p = 0; p < maxLookupSelector() && 0 == h; ++p) {
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string lpath = dictPath(p);
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h = addSpeller(lang, lpath);
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}
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if (h) {
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string const encoding = h->get_dic_encoding();
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PersonalWordList * pd = new PersonalWordList(lang->lang());
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pd->load();
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personal_[lang->lang()] = pd;
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docstring_list::const_iterator it = pd->begin();
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docstring_list::const_iterator et = pd->end();
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for (; it != et; ++it) {
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string const word_to_add = to_iconv_encoding(*it, encoding);
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h->add(word_to_add.c_str());
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}
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}
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return h;
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}
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int HunspellChecker::Private::numDictionaries() const
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{
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int result = 0;
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Spellers::const_iterator it = spellers_.begin();
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Spellers::const_iterator et = spellers_.end();
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for (; it != et; ++it)
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result += it->second != 0;
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return result;
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}
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bool HunspellChecker::Private::isIgnored(WordLangTuple const & wl) const
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{
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IgnoreList::const_iterator it = ignored_.begin();
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for (; it != ignored_.end(); ++it) {
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if (it->lang()->code() != wl.lang()->code())
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continue;
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if (it->word() == wl.word())
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return true;
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}
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return false;
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}
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/// personal word list interface
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void HunspellChecker::Private::remove(WordLangTuple const & wl)
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{
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Hunspell * h = speller(wl.lang());
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if (!h)
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return;
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string const encoding = h->get_dic_encoding();
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string const word_to_check = to_iconv_encoding(wl.word(), encoding);
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h->remove(word_to_check.c_str());
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PersonalWordList * pd = personal_[wl.lang()->lang()];
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if (!pd)
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return;
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pd->remove(wl.word());
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}
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void HunspellChecker::Private::insert(WordLangTuple const & wl)
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{
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Hunspell * h = speller(wl.lang());
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if (!h)
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return;
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string const encoding = h->get_dic_encoding();
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string const word_to_check = to_iconv_encoding(wl.word(), encoding);
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h->add(word_to_check.c_str());
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PersonalWordList * pd = personal_[wl.lang()->lang()];
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if (!pd)
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return;
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pd->insert(wl.word());
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}
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bool HunspellChecker::Private::learned(WordLangTuple const & wl)
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{
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PersonalWordList * pd = personal_[wl.lang()->lang()];
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if (!pd)
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return false;
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return pd->exists(wl.word());
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}
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HunspellChecker::HunspellChecker()
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: d(new Private)
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{}
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HunspellChecker::~HunspellChecker()
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{
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delete d;
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}
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SpellChecker::Result HunspellChecker::check(WordLangTuple const & wl)
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{
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if (d->isIgnored(wl))
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return WORD_OK;
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Hunspell * h = d->speller(wl.lang());
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if (!h)
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return NO_DICTIONARY;
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int info;
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string const encoding = h->get_dic_encoding();
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string const word_to_check = to_iconv_encoding(wl.word(), encoding);
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LYXERR(Debug::GUI, "spellCheck: \"" <<
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wl.word() << "\", lang = " << wl.lang()->lang()) ;
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if (h->spell(word_to_check.c_str(), &info))
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return d->learned(wl) ? LEARNED_WORD : WORD_OK;
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if (info & SPELL_COMPOUND) {
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// FIXME: What to do with that?
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LYXERR(Debug::GUI, "Hunspell compound word found " << word_to_check);
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}
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if (info & SPELL_FORBIDDEN) {
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// This was removed from personal dictionary
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LYXERR(Debug::GUI, "Hunspell explicit forbidden word found " << word_to_check);
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}
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return UNKNOWN_WORD;
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}
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void HunspellChecker::advanceChangeNumber()
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{
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nextChangeNumber();
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}
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void HunspellChecker::insert(WordLangTuple const & wl)
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{
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d->insert(wl);
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LYXERR(Debug::GUI, "learn word: \"" << wl.word() << "\"") ;
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advanceChangeNumber();
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}
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void HunspellChecker::remove(WordLangTuple const & wl)
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{
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d->remove(wl);
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LYXERR(Debug::GUI, "unlearn word: \"" << wl.word() << "\"") ;
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advanceChangeNumber();
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}
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void HunspellChecker::accept(WordLangTuple const & wl)
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{
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d->ignored_.push_back(wl);
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LYXERR(Debug::GUI, "ignore word: \"" << wl.word() << "\"") ;
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advanceChangeNumber();
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}
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void HunspellChecker::suggest(WordLangTuple const & wl,
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docstring_list & suggestions)
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{
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suggestions.clear();
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Hunspell * h = d->speller(wl.lang());
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if (!h)
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return;
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string const encoding = h->get_dic_encoding();
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string const word_to_check = to_iconv_encoding(wl.word(), encoding);
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char ** suggestion_list;
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int const suggestion_number = h->suggest(&suggestion_list, word_to_check.c_str());
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if (suggestion_number <= 0)
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return;
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for (int i = 0; i != suggestion_number; ++i)
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suggestions.push_back(from_iconv_encoding(suggestion_list[i], encoding));
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h->free_list(&suggestion_list, suggestion_number);
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}
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void HunspellChecker::stem(WordLangTuple const & wl,
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docstring_list & suggestions)
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{
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suggestions.clear();
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Hunspell * h = d->speller(wl.lang());
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if (!h)
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return;
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string const encoding = h->get_dic_encoding();
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string const word_to_check = to_iconv_encoding(wl.word(), encoding);
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char ** suggestion_list;
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int const suggestion_number = h->stem(&suggestion_list, word_to_check.c_str());
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if (suggestion_number <= 0)
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return;
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for (int i = 0; i != suggestion_number; ++i)
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suggestions.push_back(from_iconv_encoding(suggestion_list[i], encoding));
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h->free_list(&suggestion_list, suggestion_number);
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}
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bool HunspellChecker::hasDictionary(Language const * lang) const
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{
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if (!lang)
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return false;
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return d->haveDictionary(lang);
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}
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int HunspellChecker::numDictionaries() const
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{
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return d->numDictionaries();
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}
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docstring const HunspellChecker::error()
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{
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return docstring();
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}
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} // namespace lyx
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