Aegisub/aegisub/spellchecker_hunspell.cpp

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// Copyright (c) 2006, Rodrigo Braz Monteiro
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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
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
///////////
// Headers
#include "config.h"
#ifdef WITH_HUNSPELL
#include "spellchecker.h"
#include "standard_paths.h"
#include "utils.h"
#include "options.h"
#include <hunspell/hunspell.hxx>
#include <wx/wxprec.h>
#include <wx/wxprec.h>
#include <wx/dir.h>
#include <wx/filename.h>
#include <wx/wfstream.h>
#include <wx/txtstrm.h>
//////////////////
// Hunspell class
class HunspellSpellChecker : public SpellChecker {
private:
Hunspell *hunspell;
wxCSConv *conv;
wxString affpath;
wxString dicpath;
void Reset();
public:
HunspellSpellChecker();
~HunspellSpellChecker();
void AddWord(wxString word);
bool CanAddWord(wxString word);
bool CheckWord(wxString word);
wxArrayString GetSuggestions(wxString word);
wxArrayString GetLanguageList();
void SetLanguage(wxString language);
};
///////////
// Factory
class HunspellSpellCheckerFactory : public SpellCheckerFactory {
public:
SpellChecker *CreateSpellChecker() { return new HunspellSpellChecker(); }
HunspellSpellCheckerFactory() : SpellCheckerFactory(_T("hunspell")) {}
} registerHunspell;
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///////////////
// Constructor
HunspellSpellChecker::HunspellSpellChecker() {
hunspell = NULL;
conv = NULL;
SetLanguage(Options.AsText(_T("Spell checker Language")));
}
//////////////
// Destructor
HunspellSpellChecker::~HunspellSpellChecker() {
Reset();
}
/////////
// Reset
void HunspellSpellChecker::Reset() {
delete hunspell;
hunspell = NULL;
delete conv;
conv = NULL;
affpath.Clear();
dicpath.Clear();
}
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//////////////////////////
// Can add to dictionary?
bool HunspellSpellChecker::CanAddWord(wxString word) {
if (!hunspell) return false;
wxCharBuffer buffer = word.mb_str(*conv);
return (buffer.data() != NULL);
}
//////////////////////////
// Add word to dictionary
void HunspellSpellChecker::AddWord(wxString word) {
// Dictionary OK?
if (!hunspell) return;
// Add to currently loaded file
hunspell->add(word.mb_str(*conv));
// Load dictionary
wxArrayString dic;
wxString curLine;
if (!dicpath.IsEmpty()) { // Even if you ever want to remove this "if", keep the braces, so the stream closes at the end
bool first = true;
bool added = false;
wxFileInputStream in(dicpath);
if (!in.IsOk()) return;
wxTextInputStream textIn(in,_T(" \t"),*conv);
// Read it
while (in.CanRead() && !in.Eof()) {
// Read line
curLine = textIn.ReadLine();
curLine.Trim();
// First
if (first) {
first = false;
if (curLine.IsNumber()) continue;
}
// See if word to be added goes here
if (!added && curLine.Lower() > word.Lower()) {
dic.Add(word);
added = true;
}
// Add to memory dictionary
dic.Add(curLine);
}
}
// Write back to disk
wxFileOutputStream out(dicpath);
if (!out.IsOk()) return;
wxTextOutputStream textOut(out,wxEOL_UNIX,*conv);
textOut.WriteString(wxString::Format(_T("%i"),dic.Count())+_T("\n"));
for (unsigned int i=0;i<dic.Count();i++) textOut.WriteString(dic[i]+_T("\n"));
}
//////////////////////////////
// Check if the word is valid
bool HunspellSpellChecker::CheckWord(wxString word) {
if (!hunspell) return true;
wxCharBuffer buf = word.mb_str(*conv);
if (buf) return (hunspell->spell(buf) == 1);
return false;
}
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////////////////////////////
// Get suggestions for word
wxArrayString HunspellSpellChecker::GetSuggestions(wxString word) {
// Array
wxArrayString suggestions;
// Get suggestions
if (hunspell) {
// Word
wxCharBuffer buf = word.mb_str(*conv);
if (!buf) return suggestions;
// Grab raw from Hunspell
char **results;
int n = hunspell->suggest(&results,buf);
// Convert each
for (int i=0;i<n;i++) {
wxString current(results[i],*conv);
suggestions.Add(current);
delete results[i];
}
// Delete
delete results;
}
// Return them
return suggestions;
}
//////////////////////////////////////
// Get list of available dictionaries
wxArrayString HunspellSpellChecker::GetLanguageList() {
// Get dir name
wxString path = DecodeRelativePath(Options.AsText(_T("Dictionaries path")),StandardPaths::DecodePath(_T("?data/"))) + _T("/");
wxArrayString list;
wxFileName folder(path);
if (!folder.DirExists()) return list;
// Get file lists
wxArrayString dic;
wxDir::GetAllFiles(path,&dic,_T("*.dic"),wxDIR_FILES);
wxArrayString aff;
wxDir::GetAllFiles(path,&aff,_T("*.aff"),wxDIR_FILES);
// For each dictionary match, see if it can find the corresponding .aff
for (unsigned int i=0;i<dic.Count();i++) {
wxString curAff = dic[i].Left(dic[i].Length()-4) + _T(".aff");
for (unsigned int j=0;j<aff.Count();j++) {
// Found match
if (curAff == aff[j]) {
wxFileName fname(curAff);
list.Add(fname.GetName());
break;
}
}
}
// Return list
return list;
}
////////////////
// Set language
void HunspellSpellChecker::SetLanguage(wxString language) {
// Unload
Reset();
if (language.IsEmpty()) return;
// Get dir name
wxString path = DecodeRelativePath(Options.AsText(_T("Dictionaries path")),StandardPaths::DecodePath(_T("?data/"))) + _T("/");
// Get affix and dictionary paths
affpath = path + language + _T(".aff");
dicpath = path + language + _T(".dic");
// Check if language is available
if (!wxFileExists(affpath) || !wxFileExists(dicpath)) return;
// Load
hunspell = new Hunspell(affpath.mb_str(wxConvLocal),dicpath.mb_str(wxConvLocal));
conv = NULL;
if (hunspell) conv = new wxCSConv(wxString(hunspell->get_dic_encoding(),wxConvUTF8));
}
#endif // WITH_HUNSPELL