/*

  * Copyright 2002-2009 the original author or authors.

  *

  * 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 net.sf.json.groovy;

 import groovy.lang.GroovyObjectSupport;

 import java.io.BufferedReader;

 import java.io.File;

 import java.io.FileReader;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.io.Reader;

 import java.net.URL;

 import net.sf.json.JSON;

 import net.sf.json.JSONSerializer;

 import net.sf.json.JsonConfig;

 /**

  * A Helper class modeled after XmlSlurper

  * 

  * @author Andres Almiray <aalmiray@users.sourceforge.net>

  */

 public class JsonSlurper extends GroovyObjectSupport {

    private JsonConfig jsonConfig;

    public JsonSlurper() {

       this( new JsonConfig() );

    }

    public JsonSlurper( JsonConfig jsonConfig ) {

       this.jsonConfig = jsonConfig != null ? jsonConfig : new JsonConfig();

    }

    public JSON parse( File file ) throws IOException {

       return parse( new FileReader( file ) );

    }

    public JSON parse( URL url ) throws IOException {

       return parse( url.openConnection().getInputStream() );

    }

    public JSON parse( InputStream input ) throws IOException {

       return parse( new InputStreamReader( input ) );

    }

    public JSON parse( String uri ) throws IOException {

       return parse( new URL( uri ) );

    }

    public JSON parse( Reader reader ) throws IOException {

       // unfortunately JSONSerializer can't process the text as a stream

       // so we must read the full content first and then parse it

       StringBuffer buffer = new StringBuffer();

       BufferedReader in = new BufferedReader( reader );

       String line = null;

       while( (line = in.readLine()) != null ) {

          buffer.append( line ).append( "\n" );

       }

       return parseText( buffer.toString() );

    }

    public JSON parseText( String text ) {

       return JSONSerializer.toJSON( text, jsonConfig );

    }

 }