|
1
11 package org.eclipse.pde.internal.ui.nls;
12
13 public class StringHelper {
14
15 protected static String  preparePropertiesString(String s, char[] newLine) {
16 if (s == null)
17 return null;
18 int length = s.length();
19 int nlLength = newLine.length;
20 StringBuffer sb = new StringBuffer (length + nlLength);
21 for (int i = 0; i < length; i++) {
22 char c = s.charAt(i);
23 if (i + nlLength < length) {
24 boolean notNewLine = false;
25 for (int j = 0; j < nlLength; j++)
26 if (s.charAt(i + j) != newLine[j])
27 notNewLine = true;
28 if (!notNewLine)
29 sb.append("\\"); }
31 sb.append(c);
32 }
33 return sb.toString();
34 }
35
36 protected static String unwindEscapeChars(String s) {
37 if (s != null) {
38 int length = s.length();
39 StringBuffer sb = new StringBuffer (length);
40 for (int i = 0; i < length; i++) {
41 char c = s.charAt(i);
42 sb.append(getUnwoundString(c));
43 }
44 return sb.toString();
45 }
46 return null;
47 }
48
49 protected static String getUnwoundString(char c) {
50 switch (c) {
51 case '\b' :
52 return "\\b"; case '\t' :
54 return "\\t"; case '\n' :
56 return "\\n"; case '\f' :
58 return "\\f"; case '\r' :
60 return "\\r"; case '\\' :
62 return "\\\\"; }
64 return String.valueOf(c);
65 }
66
67 protected static String windEscapeChars(String s) {
68 if (s == null)
69 return null;
70
71 char aChar;
72 int len= s.length();
73 StringBuffer outBuffer= new StringBuffer (len);
74
75 for (int x= 0; x < len;) {
76 aChar= s.charAt(x++);
77 if (aChar == '\\') {
78 aChar= s.charAt(x++);
79 if (aChar == 'u') {
80 int value= 0;
82 for (int i= 0; i < 4; i++) {
83 aChar= s.charAt(x++);
84 switch (aChar) {
85 case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
86 value= (value << 4) + aChar - '0';
87 break;
88 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
89 value= (value << 4) + 10 + aChar - 'a';
90 break;
91 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
92 value= (value << 4) + 10 + aChar - 'A';
93 break;
94 default:
95 throw new IllegalArgumentException ("Malformed \\uxxxx encoding."); }
97 }
98 outBuffer.append((char) value);
99 } else {
100 if (aChar == 't') {
101 outBuffer.append('\t');
102 } else {
103 if (aChar == 'r') {
104 outBuffer.append('\r');
105 } else {
106 if (aChar == 'n') {
107 outBuffer.append('\n');
108 } else {
109 if (aChar == 'f') {
110 outBuffer.append('\f');
111 } else {
112 outBuffer.append(aChar);
113 }
114 }
115 }
116 }
117 }
118 } else
119 outBuffer.append(aChar);
120 }
121 return outBuffer.toString();
122 }
123
124 protected static boolean isValidLocalization(String name) {
125 if (name.length() <= 0) {
126 return false;
127 }
128 for (int i = 0; i < name.length(); i++) {
129 char c = name.charAt(i);
130 if ((c < 'A' || 'Z' < c) && (c < 'a' || 'z' < c)
131 && (c < '0' || '9' < c) && c != '_' && c != '-' && c != '/') {
132 return false;
133 }
134 }
135 return true;
136 }
137 }
138 |
Popular Tags |
Java API By Example, From Geeks To Geeks.