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1
23 package com.sun.appserv.management.util.misc;
24
25 import java.util.Set  ;
26
27 import com.sun.appserv.management.util.stringifier.SmartStringifier;
28
29
30
33 public final class StringUtil
34 {
35 private StringUtil() {}
36
37 public final static char QUOTE_CHAR = '\"';
38 public final static String QUOTE = "" + QUOTE_CHAR;
39
40
43 public final static String LS = System.getProperty( "line.separator", "\n" );
44
45 public static String
46 quote( Object o )
47 {
48 return( quote( o, QUOTE_CHAR ) );
49 }
50
51 public static String
52 quote( Object o, char leftHandChar )
53 {
54 final String s = o == null ? "null" : SmartStringifier.toString( o );
55
56 char leftChar = leftHandChar;
57 char rightChar = leftHandChar;
58
59 if ( leftHandChar == '(' )
60 {
61 rightChar = ')';
62 }
63 else if ( leftHandChar == '{' )
64 {
65 rightChar = '}';
66 }
67 else if ( leftHandChar == '[' )
68 {
69 rightChar = ']';
70 }
71 else if ( leftHandChar == '<' )
72 {
73 rightChar = '>';
74 }
75 else
76 {
77 }
79
80 final String out = leftChar + s + rightChar;
81
82 return( out );
83 }
84
85
86 public static String
87 toHexString( byte theByte )
88 {
89 String result = Integer.toHexString( ((int)theByte) & 0x000000FF );
90 if ( result.length() == 1 )
91 {
92 result = "0" + result;
93 }
94 return( result );
95 }
96
97 public static String
98 toHexString( byte[] bytes )
99 {
100 return( toHexString( bytes, null ) );
101 }
102
103 public static String
104 toHexString( byte[] bytes, String delim )
105 {
106 final StringBuffer buf = new StringBuffer ();
107
108 if ( bytes.length == 0 )
109 {
110 }
112 else if ( delim == null || delim.length() == 0 )
113 {
114 for( int i = 0; i < bytes.length; ++i )
115 {
116 buf.append( toHexString( bytes[ i ] ) );
117 }
118 }
119 else
120 {
121 for( int i = 0; i < bytes.length; ++i )
122 {
123 buf.append( toHexString( bytes[ i ] ) + delim );
124 }
125
126 buf.setLength( buf.length() - 1);
128 }
129
130 return( buf.toString() );
131 }
132
133 public static String
134 stripSuffix(
135 final String s,
136 final String suffix )
137 {
138 String result = s;
139
140 if ( s.endsWith( suffix ) )
141 {
142 result = s.substring( 0, s.length() - suffix.length() );
143 }
144
145 return( result );
146 }
147
148
149 public static String
150 replaceSuffix(
151 final String s,
152 final String fromSuffix,
153 final String toSuffix )
154 {
155 if ( ! s.endsWith( fromSuffix ) )
156 {
157 throw new IllegalArgumentException ( fromSuffix );
158 }
159
160 return( stripSuffix( s, fromSuffix ) + toSuffix );
161 }
162
163 public static String
164 stripPrefix(
165 final String s,
166 final String prefix )
167 {
168 String result = s;
169
170 if ( s.startsWith( prefix ) )
171 {
172 result = s.substring( prefix.length(), s.length() );
173 }
174
175 return( result );
176 }
177
178
179 public static String
180 stripPrefixAndSuffix(
181 final String s,
182 final String prefix,
183 final String suffix )
184 {
185 return stripPrefix( stripSuffix( s, suffix ), prefix );
186 }
187
188
189 public static String
190 upperCaseFirstLetter( final String s)
191 {
192 String result = s;
193
194 if ( s.length() >= 1 )
195 {
196 result = s.substring( 0, 1 ).toUpperCase() + s.substring( 1, s.length() );
197 }
198
199 return( result );
200 }
201
202
203 private static String
204 toString( final Object o)
205 {
206 String result = null;
207
208 if ( o == null )
209 {
210 result = "null";
211 }
212 else if ( o instanceof byte[] )
213 {
214 final byte[] b = byte[].class.cast( o );
215 result = "byte[] of length " + b.length;
216 }
217 else if ( o instanceof String [] )
218 {
219 result = toString( ", ", (Object [])o);
220 }
221 else
222 {
223 result = o.toString();
224 }
225
226 final int MAX_LENGTH = 256;
227 if ( result.length() > MAX_LENGTH )
228 {
229 result = result.substring( 0, MAX_LENGTH - 1 );
230 }
231
232 return result;
233 }
234
235 public static String
236 toString( final String [] args )
237 {
238 return toString( ", ", args );
239 }
240
241 public static String
242 toString( final String delim, final String ... args )
243 {
244 return toString( delim, (Object [])args );
245 }
246
247
251 public static String
252 toString( final String delim, final Object ... args )
253 {
254 String result = null;
255
256 if ( args == null )
257 {
258 result = "" + null;
259 }
260 else if ( args.length == 0 )
261 {
262 result = "";
263 }
264 else if ( args.length == 1 )
265 {
266 result = toString( args[ 0 ] );
267 }
268 else
269 {
270 final StringBuilder builder = new StringBuilder ();
271
272 for( int i = 0; i < args.length - 1; ++i )
273 {
274 builder.append( toString( args[ i ] ) );
275 builder.append( delim );
276 }
277 builder.append( toString( args[ args.length - 1 ] ) );
278
279 result = builder.toString();
280 }
281
282
283 return result;
284 }
285
286
289 public static String
290 getPrefix(
291 final Set <String > prefixes,
292 final String s )
293 {
294 String result = null;
295 for( final String prefix : prefixes )
296 {
297 if ( s.startsWith( prefix ) )
298 {
299 result = prefix;
300 break;
301 }
302 }
303 return result;
304 }
305
306
310 public static String
311 findAndStripPrefix(
312 final Set <String > prefixes,
313 final String s )
314 {
315 final String prefix = getPrefix( prefixes, s );
316 if ( prefix == null )
317 {
318 throw new IllegalArgumentException ( s );
319 }
320
321 return stripPrefix( s, prefix );
322 }
323
324 private static String NEWLINE_STR = null;
325
326 public static String
327 NEWLINE()
328 {
329 if ( NEWLINE_STR == null )
330 {
331 NEWLINE_STR = System.getProperty( "line.separator" );
332 }
333 return NEWLINE_STR;
334 }
335
336 }
337
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