org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/tmf/ui/views/callstack/FunctionNameMapper.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Alexandre Montplaisir - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.ui.views.callstack;
  14
  15 import java.io.BufferedReader;
  16 import java.io.File;
  17 import java.io.FileNotFoundException;
  18 import java.io.FileReader;
  19 import java.io.IOException;
  20 import java.util.Collections;
  21 import java.util.HashMap;
  22 import java.util.Map;
  23
  24 import org.eclipse.jdt.annotation.Nullable;
  25
  26 /**
  27  * Class containing the different methods to import an address->name mapping.
  28  *
  29  * @author Alexandre Montplaisir
  30  */
  31 class FunctionNameMapper {
  32
  33     public static @Nullable Map<String, String> mapFromNmTextFile(File mappingFile) {
  34         Map<String, String> map = new HashMap<String, String>();
  35
  36         FileReader fr;
  37         try {
  38             fr = new FileReader(mappingFile);
  39         } catch (FileNotFoundException e) {
  40             return null;
  41         }
  42         BufferedReader reader = new BufferedReader(fr);
  43
  44         try {
  45             for (String line = reader.readLine(); line != null; line = reader.readLine()) {
  46                 String[] elems = line.split(" "); //$NON-NLS-1$
  47                 /* Only lines with 3 elements contain addresses */
  48                 if (elems.length == 3) {
  49                     /* Strip the leading zeroes from the address */
  50                     String address = elems[0].replaceFirst("^0+(?!$)", ""); //$NON-NLS-1$ //$NON-NLS-2$;
  51                     String name = elems[elems.length - 1];
  52                     map.put(address, name);
  53                 }
  54             }
  55
  56         } catch (IOException e) {
  57             /* Stop reading the file at this point */
  58         } finally {
  59             try {
  60                 reader.close();
  61             } catch (IOException e) {}
  62         }
  63
  64         if (map.isEmpty()) {
  65             return null;
  66         }
  67         return Collections.unmodifiableMap(map);
  68     }
  69
  70 }