self.philbrown.droidQuery.ScriptResponseHandler.java Source code

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Here is the source code for self.philbrown.droidQuery.ScriptResponseHandler.java

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/*
 * Copyright 2013 Phil Brown
 *
 * 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 self.philbrown.droidQuery;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.ResponseHandler;

import android.content.Context;
import android.util.Log;

/**
 * Handles a Script by executing it, and returning the result
 * @author Phil Brown
 * @see ScriptResponse
 * @see Script
 */
public class ScriptResponseHandler implements ResponseHandler<ScriptResponse> {
    /** Used to execute the Script */
    private Context context;

    /**
     * Constructor
     * @param context
     */
    public ScriptResponseHandler(Context context) {
        this.context = context;
    }

    @Override
    public ScriptResponse handleResponse(HttpResponse response) throws ClientProtocolException, IOException {
        StatusLine statusLine = response.getStatusLine();
        if (statusLine.getStatusCode() >= 300) {
            Log.e("droidQuery",
                    "HTTP Response Error " + statusLine.getStatusCode() + ":" + statusLine.getReasonPhrase());
        }

        HttpEntity entity = response.getEntity();
        if (entity == null)
            return null;

        ScriptResponse script = new ScriptResponse();
        script.text = AjaxUtil.toString(entity);
        //new line characters currently represent a new command. 
        //Although one file can be all one line, it will be executed as a shell script.
        //for something else, the first line should contain be: #!<shell>\n, where <shell> points
        //to the shell that should be used.
        String[] commands = script.text.split("\n");
        script.script = new Script(context, commands);
        try {
            script.output = script.script.execute();
        } catch (Throwable t) {
            //could not execute script
            script.output = null;
        }
        return script;
    }

    public ScriptResponse handleResponse(HttpURLConnection connection) throws ClientProtocolException, IOException {
        int statusCode = connection.getResponseCode();

        if (statusCode >= 300) {
            Log.e("droidQuery", "HTTP Response Error " + statusCode + ":" + connection.getResponseMessage());
        }

        ScriptResponse script = new ScriptResponse();
        InputStream stream = AjaxUtil.getInputStream(connection);
        script.text = Ajax.parseText(stream);
        //new line characters currently represent a new command. 
        //Although one file can be all one line, it will be executed as a shell script.
        //for something else, the first line should contain be: #!<shell>\n, where <shell> points
        //to the shell that should be used.
        String[] commands = script.text.split("\n");
        script.script = new Script(context, commands);
        try {
            script.output = script.script.execute();
        } catch (Throwable t) {
            //could not execute script
            script.output = null;
        } finally {
            if (stream != null) {
                stream.close();
            }
        }
        return script;
    }
}