samples/javaimporter.js

Fri, 05 Jun 2015 12:38:53 +0200

author
mhaupt
date
Fri, 05 Jun 2015 12:38:53 +0200
changeset 1398
2f1b9f4daec1
parent 962
ac62e33a99b0
permissions
-rw-r--r--

8080087: Nashorn $ENV.PWD is originally undefined
Summary: On Windows, the PWD environment variable does not exist and cannot be imported in scripting mode, so it is set explicitly.
Reviewed-by: lagergren, sundar

     1 /*
     2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
     3  *
     4  * Redistribution and use in source and binary forms, with or without
     5  * modification, are permitted provided that the following conditions
     6  * are met:
     7  *
     8  *   - Redistributions of source code must retain the above copyright
     9  *     notice, this list of conditions and the following disclaimer.
    10  *
    11  *   - Redistributions in binary form must reproduce the above copyright
    12  *     notice, this list of conditions and the following disclaimer in the
    13  *     documentation and/or other materials provided with the distribution.
    14  *
    15  *   - Neither the name of Oracle nor the names of its
    16  *     contributors may be used to endorse or promote products derived
    17  *     from this software without specific prior written permission.
    18  *
    19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
    20  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
    21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
    23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
    27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    30  */
    32 // JavaImporter along with 'with' statement helps in
    33 // localized Java class references
    35 function readTextFromURL(url) {
    37     // equivalent to
    38     //
    39     //    import java.io.*;
    40     //    import java.net.*;
    41     //    import java.lang.StringBuffer;
    42     //
    43     // only inside the 'with' statement
    44     with (new JavaImporter(java.io,
    45         java.net,
    46         java.lang.StringBuilder)) {
    47         var buf = new StringBuilder();
    48         var u = new URL(url);
    49         var reader = new BufferedReader(
    50             new InputStreamReader(u.openStream()));
    51         var line = null;
    52         try {
    53             while ((line = reader.readLine()) != null)
    54                 buf.append(line).append('\n');
    55         } finally {
    56             reader.close();
    57         }
    59         return buf.toString();
    60     }
    61 }
    63 print(readTextFromURL("https://twitter.com/"));

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