1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*******************************************************************************
* Copyright (c) 2009, 2018 Red Hat, Inc.
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Red Hat - initial API and implementation
*******************************************************************************/
package org.eclipse.linuxtools.internal.callgraph.core;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class XMLParser {
private Map<Integer, HashMap<String,String>> keyValues;
private List<Integer> idList;
private int id;
private int currentlyIn;
private static final String ATTR_NAME = "name"; //$NON-NLS-1$
private static final String ATTR_TEXT = "text"; //$NON-NLS-1$
private static final String noName = "NoName"; //$NON-NLS-1$
private boolean textMode;
XMLParser() {
id = 0;
currentlyIn = 0;
if (keyValues != null) {
keyValues.clear();
}
keyValues = new HashMap<>();
if (idList != null) {
idList.clear();
}
idList = new ArrayList<>();
textMode = false;
}
/**
* Helper method to call parse on the contents of a file.
* @param file
*/
public void parse(File file) {
parse(getContents(file));
}
/**
* Parses a String according to XML formatting rules. Will return a HashMap indexed by an
* identification number, where each value is a further HashMap of String, String pairs representing
* attributes.
* @param message
*/
public void parse(String message) {
String tabstrip = message.replaceAll("\t", ""); //$NON-NLS-1$ //$NON-NLS-2$
String[] lines = tabstrip.split("\n"); //$NON-NLS-1$
for (String line : lines) {
if (line.length() < 1) {
continue;
}
if (line.charAt(0) == '<') {
//Either an open or close tag
if (line.charAt(1) == '/') {
//Closing tag -- assume properly formed
idList.remove((Integer) currentlyIn);
currentlyIn = -1;
if (idList.size() > 0) {
currentlyIn = idList.get(idList.size()-1);
}
setTextMode(true);
} else if (line.substring(line.length()-2, line.length() - 1).equals("/>")) { //$NON-NLS-1$
//This tag opens and closes in one line
id++;
String[] tokens = line.split(" "); //$NON-NLS-1$
HashMap<String,String> map = new HashMap<>();
map.put(ATTR_NAME, tokens[0]);
keyValues.put(id,map);
textMode = false;
addAttributes(currentlyIn, tokens, 1);
} else {
//Open tag
idList.add(id);
id++;
currentlyIn = id;
String[] tokens = line.split(" "); //$NON-NLS-1$
//Add name variable
HashMap<String,String> map = new HashMap<>();
map.put(ATTR_NAME, tokens[0]);
keyValues.put(id,map);
addAttributes(currentlyIn, tokens, 1);
}
} else {
//Attribute addition
if (currentlyIn < 0 ) {
continue;
}
if (textMode) {
HashMap<String,String> map = keyValues.get(currentlyIn);
map.put(ATTR_TEXT, line);
}
String[] tokens = line.split(" "); //$NON-NLS-1$
addAttributes(currentlyIn, tokens, 0);
}
}
}
/**
* Turns an array of Strings of form attribute=value into attribute/value pairings for the specified node.
* Starts looking at token number start.
* @param tokens
* @param start
*/
private void addAttributes(int id, String[] tokens, int start) {
HashMap<String,String> map = keyValues.get(id);
int nameless = 0;
for (int j = start; j < tokens.length; j++) {
String[] kvPair = tokens[j].split("="); //$NON-NLS-1$
String value = ""; //$NON-NLS-1$
String key = ""; //$NON-NLS-1$
if (kvPair.length < 1) {
continue;
}
if (kvPair.length < 2) {
value = kvPair[0];
if (value.charAt(value.length() - 1) == '>') {
setTextMode(true);
value = value.substring(0, value.length()-1);
}
map.put(noName + nameless, value);
nameless++;
continue;
}
value = kvPair[0];
key = kvPair[1];
if (value.charAt(value.length() - 1) == '>') {
setTextMode(true);
value = value.substring(0, value.length()-1);
}
map.put(key, value);
}
keyValues.put(id, map);
}
private static String getContents(File file) {
StringBuilder contents = new StringBuilder();
try (BufferedReader input = new BufferedReader(new FileReader(file))) {
String line = null;
while ((line = input.readLine()) != null) {
contents.append(line);
contents.append("\n"); //$NON-NLS-1$
}
} catch (IOException ex) {
ex.printStackTrace();
}
return contents.toString();
}
private void setTextMode(boolean val) {
textMode = val;
}
}
|
