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lightning-sunbird  0.9+nobinonly
Addr2Line.java
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00001 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
00002  *
00003  * The contents of this file are subject to the Netscape Public
00004  * License Version 1.1 (the "License"); you may not use this file
00005  * except in compliance with the License. You may obtain a copy of
00006  * the License at http://www.mozilla.org/NPL/
00007  *
00008  * Software distributed under the License is distributed on an "AS
00009  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
00010  * implied. See the License for the specific language governing
00011  * rights and limitations under the License.
00012  *
00013  * The Original Code is Mozilla Communicator client code, released
00014  * March 31, 1998.
00015  *
00016  * The Initial Developer of the Original Code is Netscape
00017  * Communications Corporation.  Portions created by Netscape are
00018  * Copyright (C) 1998 Netscape Communications Corporation. All
00019  * Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *
00023  * Patrick C. Beard <beard@netscape.com>
00024  *
00025  * Alternatively, the contents of this file may be used under the
00026  * terms of the GNU Public License (the "GPL"), in which case the
00027  * provisions of the GPL are applicable instead of those above.
00028  * If you wish to allow use of your version of this file only
00029  * under the terms of the GPL and not to allow others to use your
00030  * version of this file under the NPL, indicate your decision by
00031  * deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL.  If you do not delete
00033  * the provisions above, a recipient may use your version of this
00034  * file under either the NPL or the GPL.
00035  */
00036 
00037 /*
00038   Addr2Line.java
00039 
00040   Invokes the addr2line process to convert library +offset pairs into
00041   filepath:line values.
00042 
00043   by Patrick C. Beard.
00044  */
00045 
00046 import java.util.*;
00047 import java.io.*;
00048 
00049 public class Addr2Line {
00050     private Process addr2line;
00051     private BufferedWriter stdin;
00052     private BufferedReader stdout;
00053     private BufferedReader stderr;
00054 
00055     public Addr2Line(String library) throws IOException {
00056        String[] args = { "addr2line", "-C", "-f", "-e", library };
00057        addr2line = Runtime.getRuntime().exec(args);
00058        stdin = new BufferedWriter(new OutputStreamWriter(addr2line.getOutputStream()));
00059        stdout = new BufferedReader(new InputStreamReader(addr2line.getInputStream()));
00060        stderr = new BufferedReader(new InputStreamReader(addr2line.getErrorStream()));
00061     }
00062 
00063     public String getLine(String address) throws IOException {
00064        stdin.write(address + "\n"); stdin.flush();
00065        String symbol = stdout.readLine();
00066        String source = stdout.readLine();
00067        return symbol + "[" + source + "]";
00068     }
00069 }
00070