Aegisub/aegisub/src/spellchecker_hunspell.cpp

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// Copyright (c) 2010, Thomas Goyne <plorkyeran@aegisub.org>
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// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
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//
// $Id$
/// @file spellchecker_hunspell.cpp
/// @brief Hunspell-based spell checker implementation
/// @ingroup spelling
///
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#include "config.h"
#ifdef WITH_HUNSPELL
#ifndef AGI_PRE
#include <algorithm>
#include <iterator>
#include <list>
#include <wx/dir.h>
#include <wx/filename.h>
#endif
#include <libaegisub/io.h>
#include <libaegisub/line_iterator.h>
#include <libaegisub/log.h>
#include "charset_conv.h"
#include "compat.h"
#include "main.h"
#include "spellchecker_hunspell.h"
#include "standard_paths.h"
HunspellSpellChecker::HunspellSpellChecker() {
SetLanguage(lagi_wxString(OPT_GET("Tool/Spell Checker/Language")->GetString()));
}
HunspellSpellChecker::~HunspellSpellChecker() {
}
bool HunspellSpellChecker::CanAddWord(wxString word) {
if (!hunspell.get()) return false;
try {
conv->Convert(STD_STR(word));
return true;
}
catch (agi::charset::ConvError const&) {
return false;
}
}
void HunspellSpellChecker::AddWord(wxString word) {
if (!hunspell.get()) return;
std::string sword = STD_STR(word);
// Add it to the in-memory dictionary
hunspell->add(conv->Convert(sword).c_str());
std::list<std::string> words;
// Ensure that the path exists
wxFileName fn(userDicPath);
if (!fn.DirExists()) {
wxFileName::Mkdir(fn.GetPath());
}
// Read the old contents of the user's dictionary
else {
std::auto_ptr<std::istream> stream(agi::io::Open(STD_STR(userDicPath)));
std::remove_copy_if(
++agi::line_iterator<std::string>(*stream.get()),
agi::line_iterator<std::string>(),
std::back_inserter(words),
std::mem_fun_ref(&std::string::empty));
}
// Add the word
words.push_back(sword);
words.sort();
// Write the new dictionary
try {
agi::io::Save writer(STD_STR(userDicPath));
writer.Get() << words.size() << "\n";
std::copy(words.begin(), words.end(), std::ostream_iterator<std::string>(writer.Get(), "\n"));
}
catch (const agi::Exception&) {
// Failed to open file
}
}
bool HunspellSpellChecker::CheckWord(wxString word) {
if (!hunspell.get()) return true;
try {
return hunspell->spell(conv->Convert(STD_STR(word)).c_str()) == 1;
}
catch (agi::charset::ConvError const&) {
return false;
}
}
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wxArrayString HunspellSpellChecker::GetSuggestions(wxString word) {
wxArrayString suggestions;
if (!hunspell.get()) return suggestions;
// Grab raw from Hunspell
char **results;
int n = hunspell->suggest(&results,conv->Convert(STD_STR(word)).c_str());
suggestions.reserve(n);
// Convert each
for (int i = 0; i < n; ++i) {
try {
suggestions.Add(lagi_wxString(rconv->Convert(results[i])));
}
catch (agi::charset::ConvError const&) {
// Shouldn't ever actually happen...
}
delete results[i];
}
delete results;
return suggestions;
}
wxArrayString HunspellSpellChecker::GetLanguageList() {
if (!languages.empty()) return languages;
wxArrayString dic, aff;
// Get list of dictionaries
wxString path = StandardPaths::DecodePath("?data/dictionaries/");
if (wxFileName::DirExists(path)) {
wxDir::GetAllFiles(path, &dic, "*.dic", wxDIR_FILES);
wxDir::GetAllFiles(path, &aff, "*.aff", wxDIR_FILES);
}
path = StandardPaths::DecodePath(lagi_wxString(OPT_GET("Path/Dictionary")->GetString()) + "/");
if (wxFileName::DirExists(path)) {
wxDir::GetAllFiles(path, &dic, "*.dic", wxDIR_FILES);
wxDir::GetAllFiles(path, &aff, "*.aff", wxDIR_FILES);
}
if (aff.empty()) return wxArrayString();
dic.Sort();
aff.Sort();
// Drop extensions
for (size_t i = 0; i < dic.size(); ++i) dic[i].resize(dic[i].size() - 4);
for (size_t i = 0; i < aff.size(); ++i) aff[i].resize(aff[i].size() - 4);
// Verify that each aff has a dic
for (size_t i = 0, j = 0; i < dic.size() && j < aff.size(); ) {
int cmp = dic[i].Cmp(aff[j]);
if (cmp < 0) ++i;
else if (cmp > 0) ++j;
else {
// Don't insert a language twice if it's in both the user dir and
// the app's dir
wxString name = wxFileName(aff[j]).GetName();
if (languages.empty() || name != languages.back())
languages.push_back(name);
++i;
++j;
}
}
return languages;
}
void HunspellSpellChecker::SetLanguage(wxString language) {
if (language.empty()) return;
wxString userDicRoot = StandardPaths::DecodePath(lagi_wxString(OPT_GET("Path/Dictionary")->GetString()));
wxString dataDicRoot = StandardPaths::DecodePath("?data/dictionaries");
// If the user has a dic/aff pair in their dictionary path for this language
// use that; otherwise use the one from Aegisub's install dir, adding words
// from the dic in the user's dictionary path if it exists
wxString affPath = wxString::Format("%s/%s.aff", userDicRoot, language);
wxString dicPath = wxString::Format("%s/%s.dic", userDicRoot, language);
userDicPath = wxString::Format("%s/user_%s.dic", userDicRoot, language);
if (!wxFileExists(affPath) || !wxFileExists(dicPath)) {
affPath = wxString::Format("%s/%s.aff", dataDicRoot, language);
dicPath = wxString::Format("%s/%s.dic", dataDicRoot, language);
}
LOG_I("dictionary/file") << dicPath;
if (!wxFileExists(affPath) || !wxFileExists(dicPath)) {
LOG_D("dictionary/file") << "Dictionary not found";
return;
}
hunspell.reset(new Hunspell(affPath.mb_str(csConvLocal), dicPath.mb_str(csConvLocal)));
if (!hunspell.get()) return;
conv.reset(new agi::charset::IconvWrapper("utf-8", hunspell->get_dic_encoding()));
rconv.reset(new agi::charset::IconvWrapper(hunspell->get_dic_encoding(), "utf-8"));
try {
std::auto_ptr<std::istream> stream(agi::io::Open(STD_STR(userDicPath)));
agi::line_iterator<std::string> userDic(*stream.get());
agi::line_iterator<std::string> end;
++userDic; // skip entry count line
for (; userDic != end; ++userDic) {
if (userDic->empty()) continue;
try {
hunspell->add(conv->Convert(*userDic).c_str());
}
catch (agi::charset::ConvError const&) {
// Normally this shouldn't happen, but some versions of Aegisub
// wrote words in the wrong charset
}
}
}
catch (agi::Exception const&) {
// File doesn't exist or we don't have permission to read it
}
}
#endif // WITH_HUNSPELL