/*

 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.io.BufferedReader;

import java.io.InputStreamReader;

import javax.print.PrintService;

import javax.print.PrintServiceLookup;

import javax.print.attribute.AttributeSet;

import javax.print.attribute.HashAttributeSet;

import javax.print.attribute.standard.PrinterName;

/*

 * @test

 * @bug 8032693

 * @summary Test that lpstat and JDK agree whether there are printers.

 */

public class CountPrintServices {

  public static void main(String[] args) throws Exception {

    String os = System.getProperty("os.name").toLowerCase();

    System.out.println("OS is " + os);

    if (!os.equals("linux")) {

        System.out.println("Linux specific test. No need to continue");

        return;

    }

    PrintService services[] =

        PrintServiceLookup.lookupPrintServices(null, null);

    if (services.length > 0) {

       System.out.println("Services found. No need to test further.");

       return;

    }

    String[] lpcmd = { "lpstat", "-a" };

    Process proc = Runtime.getRuntime().exec(lpcmd);

    proc.waitFor();

    InputStreamReader ir = new InputStreamReader(proc.getInputStream());

    BufferedReader br = new BufferedReader(ir);

    int count = 0;

    String printer;

    while ((printer = br.readLine()) != null) {

       System.out.println("lpstat:: " + printer);

       count++;

    }

    if (count > 0) {

        throw new RuntimeException("Services exist, but not found by JDK.");

    }

 }

}