com.oneguy.recognize.Util.java Source code

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Here is the source code for com.oneguy.recognize.Util.java

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/*******************************************************************************
 * Copyright (c) 2012 Zuoshu (zuoshu.wuhan@gmail.com).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl-3.0.html
 * 
 * Contributors:
 *     Zuoshu - initial API and implementation
 ******************************************************************************/

package com.oneguy.recognize;

import java.nio.ByteBuffer;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Context;
import android.net.ConnectivityManager;
import android.text.TextUtils;
import android.util.Log;
import android.webkit.WebView;

public class Util {
    private static final String TAG = Util.class.toString();

    public static ByteBuffer doubleSize(ByteBuffer buffer) {
        if (buffer == null) {
            return null;
        }
        byte[] content = new byte[buffer.position()];
        buffer.flip();
        buffer.get(content);
        ByteBuffer newBuffer = ByteBuffer.allocate(buffer.capacity() * 2);
        newBuffer.put(content);
        return newBuffer;
    }

    public static ByteBuffer putData(ByteBuffer buffer, int data) {
        if (buffer == null) {
            return buffer;
        }
        // sizeof(int) == 4
        while (buffer.capacity() < buffer.position() + 4 - 1) {
            buffer = doubleSize(buffer);
        }
        buffer.putInt(data);
        return buffer;
    }

    public static ByteBuffer putData(ByteBuffer buffer, String data) {
        return putData(buffer, data.getBytes());
    }

    public static ByteBuffer putData(ByteBuffer buffer, short data) {
        if (buffer == null) {
            return buffer;
        }
        // sizeof(int) == 2
        while (buffer.capacity() < buffer.position() + 2 - 1) {
            buffer = doubleSize(buffer);
        }
        buffer.putShort(data);
        return buffer;
    }

    public static ByteBuffer putData(ByteBuffer buffer, byte[] data) {
        if (buffer == null || data == null || data.length == 0) {
            return buffer;
        }
        while (buffer.capacity() < buffer.position() + data.length - 1) {
            buffer = doubleSize(buffer);
        }
        buffer.put(data);
        return buffer;
    }

    public static String getUtterance(String jsonData) {
        String TAG = "Util.getUtterance";
        String result = "";
        JSONObject jsonObject;
        try {
            jsonObject = new JSONObject(jsonData);
            JSONArray hypotheses = (JSONArray) jsonObject.get("hypotheses");
            if (hypotheses != null && hypotheses.length() > 0) {
                JSONObject jsObject = (JSONObject) hypotheses.get(0);
                result = (String) jsObject.get("utterance");
            }
        } catch (JSONException e) {
            Log.d(TAG, "can not read utterance from:" + jsonData);
            e.printStackTrace();
        }
        result = result.replace("'", "");
        result = replaceInnerBlankInDigits(result);
        return result;
    }

    public static String replaceInnerBlankInDigits(String data) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < data.length(); i++) {
            if (i == 0 && data.charAt(i) == ' ') {
                continue;
            }

            sb.append(data.charAt(i));
            if (Character.isDigit(data.charAt(i)) && i < data.length() - 1 && data.charAt(i + 1) == ' ') {
                i++;
            }
        }
        return sb.toString();
    }

    public static boolean isNetworkEnable(Context context) {
        ConnectivityManager con = (ConnectivityManager) context.getSystemService(Activity.CONNECTIVITY_SERVICE);
        boolean wifi = con.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
        boolean internet = con.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();
        return wifi | internet;
    }

    public static void callJsFunction(WebView webview, String function) {
        if (webview == null) {
            Log.w(TAG, "can not call js on null webview");
            return;
        }
        webview.loadUrl("javascript:" + function);
    }

    public static void d(String tag, String content) {
        System.out.println(tag + ":" + content);
    }

    static long time;
    final static String TIME_TAG = "timer";

    public static void timerInit() {
        Log.d(TIME_TAG, "timer init");
        time = System.currentTimeMillis();
    }

    public static void logTime(String content) {
        Log.d(TIME_TAG, content + ":" + (System.currentTimeMillis() - time));
        time = System.currentTimeMillis();
    }
}