/*
* Copyright (C) 2017 Lukas Zaruba, lukas.zaruba@gmail.com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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 org.xhtmlrenderer.fop.nbsp;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
/**
* @author Lukas Zaruba, lukas.zaruba@gmail.com
*/
public class NonBreakPointsLoaderImpl implements NonBreakPointsLoader {
@Override
public List<String> loadNBSP(String lang) {
if (lang == null || lang.isEmpty()) {
throw new IllegalArgumentException("Lang must be filled to search for file!");
}
List<String> result = loadForKey(lang);
if (result == null) {
int index = lang.indexOf('_');
if (index < 0) return null; // cannot split key
result = loadForKey(lang.substring(0, index));
}
return result;
}
private List<String> loadForKey(String lang) {
String path = "non-break-spaces/" + lang + ".nbsp";
InputStream is = Thread.currentThread().getContextClassLoader().getResourceAsStream(path);
if (is == null) return null;
try {
BufferedReader r = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
List<String> result = new ArrayList<String>();
String line = null;
while ((line = r.readLine()) != null) {
if (line.isEmpty() || line.startsWith("#")) continue;
result.add(line);
}
return result;
} catch (IOException e) {
throw new RuntimeException("Error while loading nbsp file from path " + path, e);
} finally {
try {
is.close();
} catch (IOException e1) {
// ignore
}
}
}
}