/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.core.runtime.services.i18n.po;
import java.util.SortedMap;
import java.util.SortedSet;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import org.joda.time.LocalDateTime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.isis.applib.services.i18n.TranslationService;
import org.apache.isis.core.runtime.system.context.IsisContext;
class PoWriter extends PoAbstract {
public static Logger LOG = LoggerFactory.getLogger(PoWriter.class);
private static class Block {
private final String msgId;
private final SortedSet<String> contexts = Sets.newTreeSet();
private String msgIdPlural;
private Block(final String msgId) {
this.msgId = msgId;
}
}
private final SortedMap<String, Block> blocksByMsgId = Maps.newTreeMap();
public PoWriter(final TranslationServicePo translationServicePo) {
super(translationServicePo, TranslationService.Mode.WRITE);
}
//region > shutdown
@Override
void shutdown() {
if(IsisContext.getMetaModelInvalidExceptionIfAny() != null) {
// suppress logging translations
return;
}
logTranslations();
}
private void logTranslations() {
final StringBuilder buf = new StringBuilder();
buf.append("\n");
buf.append("\n##############################################################################");
buf.append("\n#");
buf.append("\n# .pot file");
buf.append("\n#");
buf.append("\n# Translate this file to each required language and place in WEB-INF, eg:");
buf.append("\n#");
buf.append("\n# /WEB-INF/translations-en_US.po");
buf.append("\n# /WEB-INF/translations-en.po");
buf.append("\n# /WEB-INF/translations-fr_FR.po");
buf.append("\n# /WEB-INF/translations-fr.po");
buf.append("\n# /WEB-INF/translations.po");
buf.append("\n#");
buf.append("\n# If the app uses TranslatableString (eg for internationalized validation");
buf.append("\n# messages), or if the app calls the TranslationService directly, then ensure");
buf.append("\n# that all text to be translated has been captured by running a full");
buf.append("\n# integration test suite that exercises all relevant behaviour");
buf.append("\n#");
buf.append("\n##############################################################################");
buf.append("\n");
buf.append("\n");
toPot(buf);
buf.append("\n");
buf.append("\n");
buf.append("\n##############################################################################");
buf.append("\n# end of .pot file");
buf.append("\n##############################################################################");
buf.append("\n");
LOG.info(buf.toString());
}
/**
* As per <a href="http://pology.nedohodnik.net/doc/user/en_US/ch-poformat.html">section 2.6</a>.
*/
protected void header(final StringBuilder buf) {
final String createdAt = LocalDateTime.now().toString("yyyy-MM-dd HH:mm:ss+Z");
buf.append("#, fuzzy").append("\n");
buf.append("msgid \"\"").append("\n");
buf.append("msgstr \"\"").append("\n");
buf.append("\"Project-Id-Version: \\n\"").append("\n");
buf.append("\"POT-Creation-Date: ").append(createdAt).append("\\n\"").append("\n");
buf.append("\"MIME-Version: 1.0\\n\"").append("\n");
buf.append("\"Content-Type: text/plain; charset=UTF-8\\n\"").append("\n");
buf.append("\"Content-Transfer-Encoding: 8bit\\n\"").append("\n");
buf.append("\"Plural-Forms: nplurals=2; plural=n != 1;\\n\"").append("\n");
buf.append("\n\n");
}
//endregion
public String translate(final String context, final String msgId) {
if(msgId == null) {
return null;
}
final Block block = blockFor(msgId);
block.contexts.add(context);
return msgId;
}
@Override
String translate(final String context, final String msgId, final String msgIdPlural, final int num) {
if(msgId == null) {
return null;
}
final Block block = blockFor(msgId);
block.contexts.add(context);
block.msgIdPlural = msgIdPlural;
return null;
}
private synchronized Block blockFor(final String msgId) {
Block block = blocksByMsgId.get(msgId);
if(block == null) {
block = new Block(msgId);
blocksByMsgId.put(msgId, block);
}
return block;
}
void toPot(final StringBuilder buf) {
header(buf);
for (final String msgId : blocksByMsgId.keySet()) {
final Block block = blocksByMsgId.get(msgId);
for (final String context : block.contexts) {
buf.append("#: ").append(context).append("\n");
}
buf.append("msgid \"").append(escape(msgId)).append("\"\n");
String msgIdPlural = block.msgIdPlural;
if(msgIdPlural == null) {
buf.append("msgstr \"\"\n");
} else {
buf.append("msgid_plural \"").append(escape(msgIdPlural)).append("\"\n");
buf.append("msgstr[0] \"\"\n");
buf.append("msgstr[1] \"\"\n");
}
buf.append("\n\n");
}
}
static String escape(final String msgId) {
return msgId.replace("\"", "\\\"");
}
}