1 |
| |
2 |
| |
3 |
| |
4 |
| package net.sourceforge.pmd.util; |
5 |
| |
6 |
| import java.util.ArrayList; |
7 |
| import java.util.Iterator; |
8 |
| import java.util.List; |
9 |
| |
10 |
| public class StringUtil { |
11 |
| |
12 |
| public static final String[] EMPTY_STRINGS = new String[0]; |
13 |
| private static final boolean supportsUTF8 = System.getProperty("net.sourceforge.pmd.supportUTF8", "no").equals("yes"); |
14 |
| private static final String[] ENTITIES; |
15 |
| |
16 |
| static { |
17 |
17
| ENTITIES = new String[256 - 126];
|
18 |
17
| for (int i = 126; i <= 255; i++) {
|
19 |
2210
| ENTITIES[i - 126] = "&#" + i + ';';
|
20 |
| } |
21 |
| } |
22 |
| |
23 |
24
| public static String replaceString(String original, char oldChar, String newString) {
|
24 |
| |
25 |
24
| String fixedNew = newString == null ? "" : newString;
|
26 |
| |
27 |
24
| StringBuffer desc = new StringBuffer();
|
28 |
24
| int index = original.indexOf(oldChar);
|
29 |
24
| int last = 0;
|
30 |
24
| while (index != -1) {
|
31 |
6
| desc.append(original.substring(last, index));
|
32 |
6
| desc.append(fixedNew);
|
33 |
6
| last = index + 1;
|
34 |
6
| index = original.indexOf(oldChar, last);
|
35 |
| } |
36 |
24
| desc.append(original.substring(last));
|
37 |
24
| return desc.toString();
|
38 |
| } |
39 |
| |
40 |
5
| public static String replaceString(String original, String oldString, String newString) {
|
41 |
| |
42 |
5
| String fixedNew = newString == null ? "" : newString;
|
43 |
| |
44 |
5
| StringBuffer desc = new StringBuffer();
|
45 |
5
| int index = original.indexOf(oldString);
|
46 |
5
| int last = 0;
|
47 |
5
| while (index != -1) {
|
48 |
1
| desc.append(original.substring(last, index));
|
49 |
1
| desc.append(fixedNew);
|
50 |
1
| last = index + oldString.length();
|
51 |
1
| index = original.indexOf(oldString, last);
|
52 |
| } |
53 |
5
| desc.append(original.substring(last));
|
54 |
5
| return desc.toString();
|
55 |
| } |
56 |
| |
57 |
| |
58 |
| |
59 |
| |
60 |
| |
61 |
| |
62 |
| |
63 |
| |
64 |
41
| public static void appendXmlEscaped(StringBuffer buf, String src) {
|
65 |
41
| appendXmlEscaped(buf, src, supportsUTF8);
|
66 |
| } |
67 |
| |
68 |
6
| public static String htmlEncode(String string) {
|
69 |
6
| String encoded = StringUtil.replaceString(string, '&', "&");
|
70 |
6
| encoded = StringUtil.replaceString(encoded, '<', "<");
|
71 |
6
| return StringUtil.replaceString(encoded, '>', ">");
|
72 |
| } |
73 |
| |
74 |
| |
75 |
| |
76 |
41
| private static void appendXmlEscaped(StringBuffer buf, String src, boolean supportUTF8) {
|
77 |
41
| char c;
|
78 |
41
| for (int i = 0; i < src.length(); i++) {
|
79 |
205
| c = src.charAt(i);
|
80 |
205
| if (c > '~') {
|
81 |
0
| if (!supportUTF8) {
|
82 |
0
| if (c <= 255) {
|
83 |
0
| buf.append(ENTITIES[c - 126]);
|
84 |
| } else { |
85 |
0
| buf.append("&u").append(Integer.toHexString(c)).append(';');
|
86 |
| } |
87 |
| } else { |
88 |
0
| buf.append(c);
|
89 |
| } |
90 |
205
| } else if (c == '&')
|
91 |
0
| buf.append("&");
|
92 |
205
| else if (c == '"')
|
93 |
0
| buf.append(""");
|
94 |
205
| else if (c == '<')
|
95 |
0
| buf.append("<");
|
96 |
205
| else if (c == '>')
|
97 |
0
| buf.append(">");
|
98 |
| else |
99 |
205
| buf.append(c);
|
100 |
| } |
101 |
| } |
102 |
| |
103 |
| |
104 |
| |
105 |
| |
106 |
| |
107 |
| |
108 |
| |
109 |
| |
110 |
| |
111 |
| |
112 |
13
| public static String[] substringsOf(String source, char delimiter) {
|
113 |
| |
114 |
13
| if (source == null || source.length() == 0) {
|
115 |
0
| return EMPTY_STRINGS;
|
116 |
| } |
117 |
| |
118 |
13
| int delimiterCount = 0;
|
119 |
13
| int length = source.length();
|
120 |
13
| char[] chars = source.toCharArray();
|
121 |
| |
122 |
13
| for (int i=0; i<length; i++) {
|
123 |
75
| if (chars[i] == delimiter) delimiterCount++;
|
124 |
| } |
125 |
| |
126 |
2
| if (delimiterCount == 0) return new String[] { source };
|
127 |
| |
128 |
11
| String results[] = new String[delimiterCount+1];
|
129 |
| |
130 |
11
| int i = 0;
|
131 |
11
| int offset = 0;
|
132 |
| |
133 |
11
| while (offset <= length) {
|
134 |
86
| int pos = source.indexOf(delimiter, offset);
|
135 |
11
| if (pos < 0) pos = length;
|
136 |
86
| results[i++] = pos == offset ? "" : source.substring(offset, pos);
|
137 |
86
| offset = pos + 1;
|
138 |
| } |
139 |
| |
140 |
11
| return results;
|
141 |
| } |
142 |
| |
143 |
| |
144 |
| |
145 |
| |
146 |
| |
147 |
| |
148 |
| |
149 |
| |
150 |
0
| public static String[] substringsOf(String str, String separator) {
|
151 |
| |
152 |
0
| if (str == null || str.length() == 0) {
|
153 |
0
| return EMPTY_STRINGS;
|
154 |
| } |
155 |
| |
156 |
0
| int index = str.indexOf(separator);
|
157 |
0
| if (index == -1) {
|
158 |
0
| return new String[]{str};
|
159 |
| } |
160 |
| |
161 |
0
| List list = new ArrayList();
|
162 |
0
| int currPos = 0;
|
163 |
0
| int len = separator.length();
|
164 |
0
| while (index != -1) {
|
165 |
0
| list.add(str.substring(currPos, index));
|
166 |
0
| currPos = index + len;
|
167 |
0
| index = str.indexOf(separator, currPos);
|
168 |
| } |
169 |
0
| list.add(str.substring(currPos));
|
170 |
0
| return (String[]) list.toArray(new String[list.size()]);
|
171 |
| } |
172 |
| |
173 |
| |
174 |
| |
175 |
| |
176 |
| |
177 |
| |
178 |
| |
179 |
| |
180 |
| |
181 |
| |
182 |
0
| public static void asStringOn(StringBuffer sb, Iterator iter, String separator) {
|
183 |
| |
184 |
0
| if (!iter.hasNext()) return;
|
185 |
| |
186 |
0
| sb.append(iter.next());
|
187 |
| |
188 |
0
| while (iter.hasNext()) {
|
189 |
0
| sb.append(separator);
|
190 |
0
| sb.append(iter.next());
|
191 |
| } |
192 |
| } |
193 |
| |
194 |
| |
195 |
| |
196 |
| |
197 |
| |
198 |
| |
199 |
| |
200 |
0
| public static int lengthOfShortestIn(String[] strings) {
|
201 |
| |
202 |
0
| int minLength = Integer.MAX_VALUE;
|
203 |
| |
204 |
0
| for (int i=0; i<strings.length; i++) {
|
205 |
0
| if (strings[i] == null) return 0;
|
206 |
0
| minLength = Math.min(minLength, strings[i].length());
|
207 |
| } |
208 |
| |
209 |
0
| return minLength;
|
210 |
| } |
211 |
| |
212 |
| |
213 |
| |
214 |
| |
215 |
| |
216 |
| |
217 |
| |
218 |
| |
219 |
| |
220 |
| |
221 |
0
| public static int maxCommonLeadingWhitespaceForAll(String[] strings) {
|
222 |
| |
223 |
0
| int shortest = lengthOfShortestIn(strings);
|
224 |
0
| if (shortest == 0) return 0;
|
225 |
| |
226 |
0
| char[] matches = new char[shortest];
|
227 |
| |
228 |
0
| String str;
|
229 |
0
| for (int m=0; m<matches.length; m++) {
|
230 |
0
| matches[m] = strings[0].charAt(m);
|
231 |
0
| if (!Character.isWhitespace(matches[m])) return m;
|
232 |
0
| for (int i=0; i<strings.length; i++) {
|
233 |
0
| str = strings[i];
|
234 |
0
| if (str.charAt(m) != matches[m]) return m;
|
235 |
| } |
236 |
| } |
237 |
| |
238 |
0
| return shortest;
|
239 |
| } |
240 |
| |
241 |
| |
242 |
| |
243 |
| |
244 |
| |
245 |
| |
246 |
| |
247 |
| |
248 |
| |
249 |
0
| public static String[] trimStartOn(String[] strings, int trimDepth) {
|
250 |
| |
251 |
0
| if (trimDepth == 0) return strings;
|
252 |
| |
253 |
0
| String[] results = new String[strings.length];
|
254 |
0
| for (int i=0; i<strings.length; i++) {
|
255 |
0
| results[i] = strings[i].substring(trimDepth);
|
256 |
| } |
257 |
0
| return results;
|
258 |
| } |
259 |
| } |