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1
22
23 package com.ice.util;
24
25 import java.util.*;
26
27
28 public class
29 StringUtilities
30 {
31
32 static public String  []
33 splitString( String splitStr, String delim )
34 {
35 int i, count;
36 String [] result;
37 StringTokenizer toker;
38
39 toker = new StringTokenizer( splitStr, delim );
40
41 count = toker.countTokens();
42
43 result = new String [ count ];
44
45 for ( i = 0 ; i < count ; ++i )
46 {
47 try { result[i] = toker.nextToken(); }
48 catch ( NoSuchElementException ex )
49 {
50 result = null;
51 break;
52 }
53 }
54
55 return result;
56 }
57
58 public static String []
59 argumentSubstitution( String [] args, Hashtable vars )
60 {
61 StringBuffer argBuf = new StringBuffer ();
62
63 String [] result = new String [ args.length ];
64
65 for ( int aIdx = 0 ; aIdx < args.length ; ++aIdx )
66 {
67 String argStr = args[ aIdx ];
68
69 int index = argStr.indexOf( '$' );
70
71 if ( index < 0 )
72 {
73 result[ aIdx ] = argStr;
74 continue;
75 }
76 else
77 {
78 result[ aIdx ] =
79 StringUtilities.stringSubstitution( argStr, vars );
80 }
81 }
82
83 return result;
84 }
85
86 public static String
87 stringSubstitution( String argStr, Hashtable vars )
88 {
89 StringBuffer argBuf = new StringBuffer ();
90
91 for ( int cIdx = 0 ; cIdx < argStr.length() ; )
92 {
93 char ch = argStr.charAt( cIdx );
94
95 switch ( ch )
96 {
97 case '$':
98 StringBuffer nameBuf = new StringBuffer ();
99 for ( ++cIdx ; cIdx < argStr.length() ; ++cIdx )
100 {
101 ch = argStr.charAt( cIdx );
102 if ( ch == '_' || Character.isLetterOrDigit( ch ) )
103 nameBuf.append( ch );
104 else
105 break;
106 }
107
108 if ( nameBuf.length() > 0 )
109 {
110 String value = (String )
111 vars.get( nameBuf.toString() );
112
113 if ( value != null )
114 {
115 argBuf.append( value );
116 }
117 }
118 break;
119
120 default:
121 argBuf.append( ch );
122 ++cIdx;
123 break;
124 }
125 }
126
127 return argBuf.toString();
128 }
129
130 public static String []
131 parseArgumentString( String argStr )
132 {
133 String [] result = null;
134
135 Vector vector =
136 StringUtilities.parseArgumentVector( argStr );
137
138 if ( vector != null && vector.size() > 0 )
139 {
140 result = new String [ vector.size() ];
141
142 for ( int i = 0 ; i < result.length ; ++i )
143 {
144 result[i] = (String )vector.elementAt(i);
145 }
146 }
147
148 return result;
149 }
150
151 public static Vector
152 parseArgumentVector( String argStr )
153 {
154 Vector result = new Vector();
155 StringBuffer argBuf = new StringBuffer ();
156
157 boolean backSlash = false;
158 boolean matchSglQuote = false;
159 boolean matchDblQuote = false;
160
161 for ( int cIdx = 0 ; cIdx < argStr.length() ; ++cIdx )
162 {
163 char ch = argStr.charAt( cIdx );
164
165 switch ( ch )
166 {
167 case ' ':
171 case '\t':
172 case '\n':
173 case '\r':
174 if ( backSlash )
175 {
176 argBuf.append( ch );
177 backSlash = false;
178 }
179 else if ( matchSglQuote || matchDblQuote )
180 {
181 argBuf.append( ch );
182 }
183 else if ( argBuf.length() > 0 )
184 {
185 result.addElement( argBuf.toString() );
186 argBuf.setLength( 0 );
187 }
188 break;
189
190 case '\\':
191 if ( backSlash )
192 {
193 argBuf.append( "\\" );
194 }
195 backSlash = ! backSlash;
196 break;
197
198 case '\'':
199 if ( backSlash )
200 {
201 argBuf.append( "'" );
202 backSlash = false;
203 }
204 else if ( matchSglQuote )
205 {
206 result.addElement( argBuf.toString() );
207 argBuf.setLength( 0 );
208 matchSglQuote = false;
209 }
210 else if ( ! matchDblQuote )
211 {
212 matchSglQuote = true;
213 }
214 break;
215
216 case '"':
217 if ( backSlash )
218 {
219 argBuf.append( "\"" );
220 backSlash = false;
221 }
222 else if ( matchDblQuote )
223 {
224 result.addElement( argBuf.toString() );
225 argBuf.setLength( 0 );
226 matchDblQuote = false;
227 }
228 else if ( ! matchSglQuote )
229 {
230 matchDblQuote = true;
231 }
232 break;
233
234 default:
235 if ( backSlash )
236 {
237 switch ( ch )
238 {
239 case 'b': argBuf.append( '\b' ); break;
240 case 'f': argBuf.append( '\f' ); break;
241 case 'n': argBuf.append( '\n' ); break;
242 case 'r': argBuf.append( '\r' ); break;
243 case 't': argBuf.append( '\t' ); break;
244
245 default:
246 char ch2 = argStr.charAt( cIdx+1 );
247 char ch3 = argStr.charAt( cIdx+2 );
248 if ( (ch >= '0' && ch <= '7')
249 && (ch2 >= '0' && ch2 <= '7')
250 && (ch3 >= '0' && ch3 <= '7') )
251 {
252 int octal =
253 ( ( (ch - '0') * 64 )
254 + ( (ch2 - '0') * 8 )
255 + (ch3 - '0') );
256 argBuf.append( (char) octal );
257 cIdx += 2;
258 }
259 else if ( ch == '0' )
260 {
261 argBuf.append( '\0' );
262 }
263 else
264 {
265 argBuf.append( ch );
266 }
267 break;
268 }
269 }
270 else
271 {
272 argBuf.append( ch );
273 }
274
275 backSlash = false;
276 break;
277 }
278 }
279
280 if ( argBuf.length() > 0 )
281 {
282 result.addElement( argBuf.toString() );
283 }
284
285 return result;
286 }
287
288 }
289
290 |
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