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// TranslationManager.java
// -------------------------------------
// part of YACY
// (C) by Michael Peter Christen; mc@yacy.net
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004
//
// This file ist contributed by Burkhard Buelte
// last major change: 2016-04-05
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// This program 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.
//
// This program 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. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package net.yacy.utils.translation;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import net.yacy.cora.util.ConcurrentLog;
import net.yacy.data.Translator;
import net.yacy.search.Switchboard;
import net.yacy.search.SwitchboardConstants;
/**
* Utility to create a translation master file from all existing translation
* with check file.exists and translation text exists.
* Also can join existing translation with master (currently ristrictive,
* means only translation text exist in master are included in resultin Map
*/
public class TranslationManager extends TranslatorXliff {
protected Map<String, Map<String, String>> mainTransLists; // current translation entries for one language
protected String loadedLng; // language loaded in mainTransLists (2-letter code)
public TranslationManager() {
super();
}
public TranslationManager(final File langfile) {
mainTransLists = loadTranslationsLists(langfile);
int pos = langfile.getName().indexOf('.');
if (pos >= 0) {
loadedLng = langfile.getName().substring(0, pos);
}
}
/**
* Add a translation text to the current map map
*
* @param relFileName relative filename the translation belongs to
* @param sourceLngTxt the english source text
* @param targetLngTxt the translated text
* @return true = if map was modified, otherwise false
*/
public boolean addTranslation(final String relFileName, final String sourceLngTxt, final String targetLngTxt) {
assert mainTransLists != null;
return addTranslation (mainTransLists, relFileName, sourceLngTxt, targetLngTxt);
}
/**
* Helper to add a translation text to the map
*
* @param translation to add the text to
* @param relFileName relative filename the translation belongs to
* @param sourceLngTxt the english source text
* @param targetLngTxt the translated text
* @return true = if map was modified, otherwise false
*/
public boolean addTranslation(Map<String, Map<String, String>> translation, final String relFileName, final String sourceLngTxt, final String targetLngTxt) {
boolean modified = false;
Map<String, String> transFile;
if (translation.containsKey(relFileName)) {
transFile = translation.get(relFileName);
} else {
transFile = new LinkedHashMap<String, String>();
translation.put(relFileName, transFile);
modified = true;
}
String oldLngTxt = transFile.put(sourceLngTxt, targetLngTxt);
if (oldLngTxt == null) {
modified = targetLngTxt != null;
} else if (!oldLngTxt.equals(targetLngTxt)) {
modified = true;
}
return modified;
}
/**
* Get the translation list for a ui/html file
* @param filename relative path to htroot
* @return translation map or null
*/
public Map<String, String> getTranslationForFile(String filename) {
return mainTransLists.get(filename);
}
/**
* Get a translation target text
* @param filename of the translation
* @param source english source text
* @return translated text or null
*/
public String getTranslation (String filename, String source) {
Map<String, String> tmp = mainTransLists.get(filename);
if (tmp != null)
return tmp.get(source);
return null;
}
/**
* Translates one file. The relFilepath is the file name as given in the
* translation source lists. The source (english) file is expected under
* htroot path. The destination file is under DATA/LOCALE and calculated
* using the language of loaded data.
*
* @param relFilepath file name releative to htroot
* @return true on success
*/
public boolean translateFile(String relFilepath) {
assert loadedLng != null;
assert mainTransLists != null;
boolean result = false;
if (mainTransLists.containsKey(relFilepath)) {
Switchboard sb = Switchboard.getSwitchboard();
if (sb != null) {
final String htRootPath = sb.getConfig(SwitchboardConstants.HTROOT_PATH, SwitchboardConstants.HTROOT_PATH_DEFAULT);
final File sourceDir = new File(sb.getAppPath(), htRootPath);
final File destDir = new File(sb.getDataPath("locale.translated_html", "DATA/LOCALE/htroot"), loadedLng);
// get absolute file by adding relative filename
final File sourceFile = new File(sourceDir, relFilepath);
final File destFile = new File(destDir, relFilepath);
result = translateFile(sourceFile, destFile, mainTransLists.get(relFilepath)); // do the translation
}
}
return result;
}
/**
* Create a master translation list by reading all translation files
* If a masterOutputFile exists, content is preserved (loaded first)
*
* @param localesFolder folder containing *.lng translation files
* @param masterOutpuFile output file (xliff format). Must not be null.
* @throws IOException
*/
public void createMasterTranslationLists(final File localesFolder, final File masterOutputFile) throws IOException {
if (masterOutputFile.exists()) // if file exists, conserve existing master content (may be updated by external tool)
mainTransLists = loadTranslationsListsFromXliff(masterOutputFile);
else
mainTransLists = new TreeMap<String, Map<String, String>>();
List<String> lngFiles = Translator.langFiles(localesFolder);
for (String filename : lngFiles) {
// load translation list
ConcurrentLog.info("TRANSLATOR", "include translation file " + filename);
Map<String, Map<String, String>> origTrans = loadTranslationsLists(new File(localesFolder, filename));
for (String transfilename : origTrans.keySet()) { // get translation filename
File checkfile = new File("htroot", transfilename);
if (checkfile.exists()) { // include in master only if file exists
// load content to compare translation text is included
StringBuilder content = new StringBuilder();
BufferedReader br = null;
try {
br = new BufferedReader(new InputStreamReader(new FileInputStream(checkfile), StandardCharsets.UTF_8));
String line = null;
while ((line = br.readLine()) != null) {
content.append(line).append(net.yacy.server.serverCore.CRLF_STRING);
}
} catch (final IOException e) {
} finally {
if (br != null) {
try {
br.close();
} catch (final Exception e) {
ConcurrentLog.fine("TRANSLATOR", "Could not close buffered reader on file " + checkfile);
}
}
}
// compare translation list
Map<String, String> origList = origTrans.get(transfilename);
for (String sourcetxt : origList.keySet()) {
if (content.indexOf(sourcetxt) >= 0) {
String origVal = origList.get(sourcetxt);
// it is possible that intentionally empty translation is given
// in this case xliff target is missing (=null)
if (origVal != null && !origVal.isEmpty()) { // if translation exists
addTranslation(transfilename, sourcetxt, null); // add to master, set target text null
}
}
}
} else {
ConcurrentLog.fine("TRANSLATOR", "skip file for translation " + transfilename + " (from " + filename + ")");
}
}
}
// save as xliff file w/o language code
saveAsXliff(null, masterOutputFile, mainTransLists);
}
/**
* Joins translation master (xliff) and existing translation (lng).
* Only texts existing in master are included from the lngfile,
* the resulting map includes all keys from master with the matching translation
* from lngfile.
*
* @param xlifmaster master (with en text to be translated)
* @param lngfile existing translation
* @return resulting map with all entries from master and translation from lngfile
* @throws IOException
*/
public Map<String, Map<String, String>> joinMasterTranslationLists(File xlifmaster, File lngfile) throws IOException {
final String filename = lngfile.getName();
mainTransLists = loadTranslationsListsFromXliff(xlifmaster);
// load translation list
ConcurrentLog.info("TRANSLATOR", "join into master translation file " + filename);
Map<String, Map<String, String>> origTrans = loadTranslationsLists(lngfile);
for (String transfilename : origTrans.keySet()) { // get translation filename
// compare translation list
Map<String, String> origList = origTrans.get(transfilename);
Map<String, String> masterList = mainTransLists.get(transfilename);
for (String sourcetxt : origList.keySet()) {
if ((masterList != null) && (masterList.isEmpty() || masterList.containsKey(sourcetxt))) { // only if included in master (as all languages are in there but checked for occuance
String origVal = origList.get(sourcetxt);
// it is possible that intentionally empty translation is given
// in this case xliff target is missing (=null)
if (origVal != null && !origVal.isEmpty()) {
addTranslation(transfilename, sourcetxt, origVal);
}
}
}
}
return mainTransLists;
}
/**
* Stores the loaded translations to a .lng file
* @param lng
* @param f
* @return
*/
public boolean saveXliff(final String lng, File f) {
return this.saveAsXliff(lng, f, mainTransLists);
}
/**
* Stores the loaded translations to a .xlf file
* @param lng
* @param f
* @return
*/
public boolean saveLng(final String lng, File f) {
return this.saveAsLngFile(lng, f, mainTransLists);
}
/**
* Total number of loaded translation entries
* @return
*/
public int size() {
int i = 0;
for (Map<String, String> trans : mainTransLists.values()) {
i += trans.size();
}
return i;
}
}
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