com.cpyf.twelve.spies.qr.code.result.supplement.ProductResultInfoRetriever.java Source code

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Here is the source code for com.cpyf.twelve.spies.qr.code.result.supplement.ProductResultInfoRetriever.java

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/*
 * Copyright (C) 2010 ZXing 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 com.cpyf.twelve.spies.qr.code.result.supplement;

import android.content.Context;
import android.os.Handler;
import android.util.Log;
import android.widget.TextView;

import com.cpyf.twelve.spies.qr.code.*;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

final class ProductResultInfoRetriever extends SupplementalInfoRetriever {

    private static final String TAG = ProductResultInfoRetriever.class.getSimpleName();

    private static final String BASE_PRODUCT_URI = "http://www.google." + LocaleManager.getProductSearchCountryTLD()
            + "/m/products?ie=utf8&oe=utf8&scoring=p&source=zxing&q=";
    private static final Pattern PRODUCT_NAME_PRICE_PATTERN = Pattern.compile("owb63p\">([^<]+).+zdi3pb\">([^<]+)");

    private final String productID;

    ProductResultInfoRetriever(TextView textView, String productID, Handler handler, Context context) {
        super(textView, handler, context);
        this.productID = productID;
    }

    @Override
    void retrieveSupplementalInfo() throws IOException, InterruptedException {

        String encodedProductID = URLEncoder.encode(productID, "UTF-8");
        String uri = BASE_PRODUCT_URI + encodedProductID;

        HttpUriRequest head = new HttpGet(uri);
        AndroidHttpClient client = AndroidHttpClient.newInstance(null);
        HttpResponse response = client.execute(head);
        int status = response.getStatusLine().getStatusCode();
        if (status != 200) {
            return;
        }

        String content = consume(response.getEntity());
        Matcher matcher = PRODUCT_NAME_PRICE_PATTERN.matcher(content);
        if (matcher.find()) {
            append(matcher.group(1));
            append(matcher.group(2));
        }
        setLink(uri);
    }

    private static String consume(HttpEntity entity) {
        Log.d(TAG, "Consuming entity");
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        InputStream in = null;
        try {
            in = entity.getContent();
            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = in.read(buffer)) > 0) {
                out.write(buffer, 0, bytesRead);
            }
        } catch (IOException ioe) {
            Log.w(TAG, ioe);
            // continue
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException ioe) {
                    // continue
                }
            }
        }
        try {
            return new String(out.toByteArray(), "UTF-8");
        } catch (UnsupportedEncodingException uee) {
            // can't happen
            throw new IllegalStateException(uee);
        }
    }

}