/*
* Copyright (c) 2010 SimpleServer authors (see CONTRIBUTORS)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package simpleserver.export;
import static simpleserver.util.Util.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import simpleserver.Resource;
import simpleserver.config.SortedProperties;
abstract class PropertiesExport implements Resource {
private static final String LOCATION = "simpleserver" + File.separator + "export";
protected SortedProperties properties;
protected final String filename;
protected String header;
protected static final String DELIMITER = ",";
protected final int valueCount;
public PropertiesExport(String name, int valueCount) {
filename = name;
properties = new SortedProperties();
this.valueCount = valueCount;
header = null;
}
protected abstract void populate();
protected File getFile() {
File file = new File(LOCATION + File.separator + filename);
if (file.exists()) {
return file;
}
populate();
new File(LOCATION).mkdir();
return file;
}
public void load() {
try {
InputStream stream = new FileInputStream(getFile());
try {
properties.load(stream);
} finally {
stream.close();
}
} catch (FileNotFoundException e) {
save();
} catch (IOException e) {
properties.clear();
populate();
save();
}
}
public void save() {
try {
OutputStream stream = new FileOutputStream(getFile());
try {
properties.store(stream, header);
} finally {
stream.close();
}
} catch (IOException e) {
println(e);
println("Failed to save export " + filename);
}
}
protected void setEntry(String key, String... values) {
properties.setProperty(key.toLowerCase(), join(DELIMITER, values, valueCount));
}
protected void updateEntry(String key, int updateIndex, String updateValue) {
key = key.toLowerCase();
String oldEntry = properties.getProperty(key);
if (oldEntry != null) {
String[] parts = oldEntry.split(DELIMITER);
parts[updateIndex] = updateValue;
properties.setProperty(key, join(DELIMITER, parts, valueCount));
}
}
public static String join(String glue, String[] pieces, int maxPieces) {
if (pieces.length > maxPieces) {
String[] reducedPieces = new String[maxPieces];
System.arraycopy(pieces, 0, reducedPieces, 0, maxPieces);
pieces = reducedPieces;
}
return join(glue, pieces);
}
public static String join(String glue, String[] pieces) {
StringBuilder value = new StringBuilder();
for (String piece : pieces) {
value.append(piece.replaceAll(glue, ""));
value.append(glue);
}
if (pieces.length > 0) {
return value.substring(0, value.length() - 1);
} else {
return "";
}
}
}