/*
* Copyright 2010-2013, CloudBees Inc.
*
* Licensed 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 com.cloudbees.sdk.utils;
import com.cloudbees.sdk.GAV;
import org.apache.commons.io.IOUtils;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
/**
* {@link PersistedStore} for GAV.
*
* @author Kohsuke Kawaguchi
*/
public abstract class PersistedGAVStore extends PersistedStore<GAV> {
protected GAV read(File f) {
try {
BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(f),"UTF-8"));
try {
GAV data = null;
String line;
while ((line=r.readLine())!=null) {
line = line.trim();
if (line.startsWith("#") || line.length()==0)
continue; // skip comment line
if (data!=null)
throw new IllegalArgumentException(f+" contains multiple entries");
try {
data = new GAV(line);
} catch (Exception e) {
throw new IllegalArgumentException("Failed to parse "+line+" in "+f,e);
}
}
return data;
} finally {
IOUtils.closeQuietly(r);
}
} catch (FileNotFoundException e) {
return null;
} catch (IOException e) {
throw new IllegalArgumentException("Failed to parse "+f,e);
}
}
protected void write(File f, GAV v) {
try {
FileOutputStream o = new FileOutputStream(f);
try {
IOUtils.write(v.toString(), o,"UTF-8");
} finally {
IOUtils.closeQuietly(o);
}
} catch (IOException e) {
throw new IllegalStateException("Failed to write to "+f,e);
}
}
}