/**
* Copyright (c) 2013 Puppet Labs, Inc. and other contributors, as listed below.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Puppet Labs
*/
package com.puppetlabs.geppetto.forge.impl;
import static com.puppetlabs.geppetto.forge.Forge.METADATA_JSON_NAME;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.StringWriter;
import com.puppetlabs.geppetto.common.os.StreamUtil;
import com.puppetlabs.geppetto.diagnostic.Diagnostic;
import com.puppetlabs.geppetto.forge.model.Metadata;
import com.puppetlabs.geppetto.forge.util.StrictMetadataJsonParser;
import com.google.inject.Singleton;
@Singleton
public class MetadataJSONExtractor extends AbstractMetadataExtractor {
public int getCardinal() {
return 20;
}
@Override
public String getPrimarySource() {
return METADATA_JSON_NAME;
}
@Override
public boolean hasTypesAndProviders() {
return true;
}
@Override
protected Metadata performMetadataExtraction(File existingFile, Diagnostic result) throws IOException {
StringWriter swr = new StringWriter((int) existingFile.length());
FileReader reader = new FileReader(existingFile);
try {
char[] buf = new char[4096];
int cnt;
while((cnt = reader.read(buf)) > 0)
swr.write(buf, 0, cnt);
}
finally {
reader.close();
}
try {
Metadata md = new Metadata();
StrictMetadataJsonParser mdParser = new StrictMetadataJsonParser(md);
mdParser.parse(existingFile, swr.toString(), result);
return md;
}
finally {
StreamUtil.close(reader);
}
}
}