/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Nam Nguyen
*/
package com.caucho.quercus.lib.gettext;
import com.caucho.vfs.BasicDependencyContainer;
import com.caucho.quercus.QuercusModuleException;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.StringValue;
import com.caucho.quercus.lib.gettext.expr.PluralExpr;
import com.caucho.vfs.Depend;
import com.caucho.vfs.Path;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Locale;
/**
* Represents a container for gettext translations.
*/
class GettextResource {
private Env _env;
protected Path _pathPO;
private Path _pathMO;
private Path _currentPath;
private BasicDependencyContainer _depend;
private PluralExpr _pluralExpr;
private HashMap<StringValue, ArrayList<StringValue>> _translations;
private String _charset;
protected GettextResource(Env env,
Path root,
Locale locale,
CharSequence category,
CharSequence domain) {
_env = env;
StringBuilder sb = new StringBuilder(locale.toString());
sb.append('/');
sb.append(category);
sb.append('/');
sb.append(domain);
sb.append(".po");
_pathPO = lookupPath(env, root, sb.toString());
sb.setCharAt(sb.length() - 2, 'm');
_pathMO = lookupPath(env, root, sb.toString());
init();
}
private Path lookupPath(Env env, Path root, String relPath) {
return root.lookup(relPath);
}
private void init() {
if (_pathPO != null && _pathPO.exists()) {
_currentPath = _pathPO;
} else if (_pathMO != null && _pathMO.exists()) {
_currentPath = _pathMO;
} else {
return;
}
try {
GettextParser parser;
if (_depend == null) {
_depend = new BasicDependencyContainer();
}
_depend.add(new Depend(_currentPath));
if (_currentPath == _pathPO) {
parser = new POFileParser(_env, _currentPath);
} else {
parser = new MOFileParser(_env, _currentPath);
}
_pluralExpr = parser.getPluralExpr();
_translations = parser.readTranslations();
_charset = parser.getCharset();
parser.close();
} catch (IOException e) {
throw new QuercusModuleException(e.getMessage());
}
}
/**
* Returns the translation for this singular key.
*
* @param key
*/
protected StringValue getTranslation(StringValue key) {
if (isModified()) {
init();
}
return getTranslationImpl(key, 0);
}
private boolean isModified() {
if (_depend == null) {
return true;
}
return _depend.isModified();
}
/**
* Returns the translation for this plural key.
*
* @param key
* @param quantity
*/
protected StringValue getTranslation(StringValue key, int quantity) {
if (isModified()) {
init();
}
if (_pluralExpr != null) {
return getTranslationImpl(key, _pluralExpr.eval(quantity));
} else {
return null;
}
}
/**
* Returns the translation for this key at the specified index in the array.
*
* @param key to find translation of
* @param index in the array for this key
*
* @return translated string, else null on error.
*/
protected StringValue getTranslationImpl(StringValue key, int index) {
if (_translations == null) {
return null;
}
ArrayList<StringValue> pluralForms = _translations.get(key);
if (pluralForms == null || pluralForms.size() == 0) {
return null;
}
if (index < pluralForms.size()) {
return pluralForms.get(index);
} else {
return pluralForms.get(0);
}
}
protected String getCharset() {
return _charset;
}
}