NativeScript/widgets/src/main/java/com/tns/Util.java

package com.tns;

import java.io.*;

import com.tns.internal.Plugin;

import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Bundle;

public final class Util
{
	private Util()
	{
	}

	public static String getDexThumb(Context context) throws NameNotFoundException
	{
		PackageInfo packageInfo = context.getPackageManager().getPackageInfo(context.getPackageName(), 0);
		int code = packageInfo.versionCode;
		long updateTime = packageInfo.lastUpdateTime;
		return String.valueOf(updateTime) + "-" + String.valueOf(code);
	}

	public static boolean isDebuggableApp(Context context)
	{
		int flags;
		try
		{
			flags = context.getPackageManager().getPackageInfo(context.getPackageName(), 0).applicationInfo.flags;
		}
		catch (NameNotFoundException e)
		{
			flags = 0;
			e.printStackTrace();
		}

		boolean isDebuggableApp = ((flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0);
		return isDebuggableApp;
	}

	static boolean runPlugin(Logger logger, Context context)
	{
		boolean success = false;
		String pluginClassName = "org.nativescript.livesync.LiveSyncPlugin";
		try
		{
			ApplicationInfo ai = context.getPackageManager().getApplicationInfo(context.getPackageName(), PackageManager.GET_META_DATA);
			Bundle metadataBundle = ai.metaData;
			if (metadataBundle != null)
			{
				pluginClassName = metadataBundle.getString("com.tns.internal.Plugin");
			}
		}
		catch (Exception e)
		{
			if (logger.isEnabled())
				e.printStackTrace();
		}

		try
		{
			Class<?> liveSyncPluginClass = Class.forName(pluginClassName);
			Plugin p = (Plugin) liveSyncPluginClass.newInstance();
			success = p.execute(context);
		}
		catch (Exception e)
		{
			if (logger.isEnabled())
				e.printStackTrace();
		}
		return success;
	}
	
	public static String readSystemProperty(String name)
	{
		InputStreamReader in = null;
		BufferedReader reader = null;
		try
		{
			Process proc = Runtime.getRuntime().exec(new String[] { "/system/bin/getprop", name });
			in = new InputStreamReader(proc.getInputStream());
			reader = new BufferedReader(in);
			return reader.readLine();
		}
		catch (IOException e)
		{
			return null;
		}
		finally
		{
			silentClose(in);
			silentClose(reader);
		}
	}
	
	private static void silentClose(Closeable closeable)
	{
		if (closeable == null)
		{
			return;
		}
		try
		{
			closeable.close();
		}
		catch (IOException ignored)
		{
		}
	}
	
	public static Boolean isPositive(String value)
	{
		return (value.equals("true") || value.equals("TRUE") ||
				value.equals("yes") || value.equals("YES") ||
				value.equals("enabled") || value.equals("ENABLED"));
	}
}