io.ultreia.java4all.i18n.spi.io.I18nKeySetClassPathReader Maven / Gradle / Ivy
package io.ultreia.java4all.i18n.spi.io;
/*-
* #%L
* I18n :: Spi
* %%
* Copyright (C) 2018 Code Lutin, Ultreia.io
* %%
* 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 3 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 Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import io.ultreia.java4all.i18n.spi.I18nKeySetDefinition;
import io.ultreia.java4all.i18n.spi.I18nResourceInitializationException;
import io.ultreia.java4all.i18n.spi.I18nResourceNotFoundException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.Objects;
import java.util.Set;
import java.util.TreeSet;
import static io.ultreia.java4all.i18n.spi.I18nResource.I18N_CLASS_PATH;
/**
* Created by tchemit on 06/11/2018.
*
* @author Tony Chemit - [email protected]
*/
public class I18nKeySetClassPathReader implements I18nKeySetReader {
private final ClassLoader classLoader;
private final boolean usePackage;
public I18nKeySetClassPathReader(ClassLoader classLoader, boolean usePackage) {
this.classLoader = Objects.requireNonNull(classLoader);
this.usePackage = usePackage;
}
@Override
public boolean isUsePackage() {
return usePackage;
}
@Override
public Set read(I18nKeySetDefinition definition) throws I18nResourceInitializationException {
String path = I18N_CLASS_PATH + "/" + definition.getResourcePath(this.usePackage);
Set keys = new TreeSet<>();
try {
URL resource = Objects.requireNonNull(classLoader).getResource(Objects.requireNonNull(path));
if (resource == null) {
throw new I18nResourceNotFoundException("Could not find resource: " + path);
}
try (BufferedReader reader = new BufferedReader(new InputStreamReader(resource.openStream(), StandardCharsets.UTF_8))) {
String line;
while ((line = reader.readLine()) != null) {
keys.add(line);
}
}
} catch (I18nResourceNotFoundException e) {
throw e;
} catch (Exception e) {
throw new I18nResourceInitializationException("Could not load keys from classpath: " + path, e);
}
return keys;
}
}