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1
20
21 package org.apache.directory.ldapstudio.browser.core.utils;
22
23
24 import java.beans.XMLDecoder  ;
25 import java.beans.XMLEncoder ;
26 import java.io.ByteArrayInputStream ;
27 import java.io.ByteArrayOutputStream ;
28 import java.util.ArrayList ;
29 import java.util.Collection ;
30 import java.util.Iterator ;
31 import java.util.List ;
32
33
34 public class Utils
35 {
36
37 public static String [] stringToArray( String s )
38 {
39 if ( s == null )
40 {
41 return null;
42 }
43 else
44 {
45 List attributeList = new ArrayList ();
46
47 StringBuffer temp = new StringBuffer ();
48 for ( int i = 0; i < s.length(); i++ )
49 {
50 char c = s.charAt( i );
51
52 if ( ( c >= 'a' && c <= 'z' ) || ( c >= 'A' && c <= 'Z' ) || ( c >= '0' && c <= '9' ) || c == '-'
53 || c == '.' || c == ';' )
54 {
55 temp.append( c );
56 }
57 else
58 {
59 if ( temp.length() > 0 )
60 {
61 attributeList.add( temp.toString() );
62 temp = new StringBuffer ();
63 }
64 }
65 }
66 if ( temp.length() > 0 )
67 {
68 attributeList.add( temp.toString() );
69 }
70
71 return ( String [] ) attributeList.toArray( new String [attributeList.size()] );
72 }
73
74 }
88
89
90 public static String arrayToString( String [] array )
91 {
92 if ( array == null || array.length == 0 )
93 {
94 return "";
95 }
96 else
97 {
98 StringBuffer sb = new StringBuffer ( array[0] );
99 for ( int i = 1; i < array.length; i++ )
100 {
101 sb.append( ", " );
102 sb.append( array[i] );
103 }
104 return sb.toString();
105 }
106 }
107
108
109 public static boolean equals( byte[] data1, byte[] data2 )
110 {
111 if ( data1 == data2 )
112 return true;
113 if ( data1 == null || data2 == null )
114 return false;
115 if ( data1.length != data2.length )
116 return false;
117 for ( int i = 0; i < data1.length; i++ )
118 {
119 if ( data1[i] != data2[i] )
120 return false;
121 }
122 return true;
123 }
124
125
126 public static String getShortenedString( String value, int length )
127 {
128
129 if ( value == null )
130 return "";
131
132 if ( value.length() > length )
133 {
134 value = value.substring( 0, length ) + "...";
135 }
136
137 return value;
138 }
139
140
141 public static String serialize( Object o )
142 {
143 ByteArrayOutputStream baos = new ByteArrayOutputStream ();
144 XMLEncoder encoder = new XMLEncoder ( baos );
145 encoder.writeObject( o );
146 encoder.close();
147 String s = LdifUtils.utf8decode( baos.toByteArray() );
148 return s;
149 }
150
151
152 public static Object deserialize( String s )
153 {
154 ByteArrayInputStream bais = new ByteArrayInputStream ( LdifUtils.utf8encode( s ) );
155 XMLDecoder decoder = new XMLDecoder ( bais );
156 Object o = decoder.readObject();
157 decoder.close();
158 return o;
159 }
160
161
162 public static String getNonNullString( Object o )
163 {
164 return o == null ? "-" : o.toString();
165 }
166
167
168 public static String formatBytes( long bytes )
169 {
170 String size = "";
171 if ( bytes > 1024 * 1024 )
172 size += ( bytes / 1024 / 1024 ) + " MB (" + bytes + " Bytes)";
173 else if ( bytes > 1024 )
174 size += ( bytes / 1024 ) + " KB (" + bytes + " Bytes)";
175 else if ( bytes > 1 )
176 size += bytes + " Bytes";
177 else
178 size += bytes + " Byte";
179 return size;
180 }
181
182
183 public static boolean containsIgnoreCase( Collection c, String s )
184 {
185 if ( c == null || s == null )
186 {
187 return false;
188 }
189
190 Iterator it = c.iterator();
191 while ( it.hasNext() )
192 {
193 Object o = it.next();
194 if ( o instanceof String && ( ( String ) o ).equalsIgnoreCase( s ) )
195 {
196 return true;
197 }
198 }
199
200 return false;
201 }
202
203
204 public static String shorten( String label, int maxLength )
205 {
206 if ( label == null )
207 {
208 return null;
209 }
210 if ( maxLength < 3 )
211 {
212 return "...";
213 }
214 if ( label.length() > maxLength )
215 {
216 label = label.substring( 0, maxLength / 2 ) + "..."
217 + label.substring( label.length() - maxLength / 2, label.length() );
218
219 }
220 StringBuffer sb = new StringBuffer ( maxLength + 3 );
221 for ( int i = 0; i < label.length(); i++ )
222 {
223 char c = label.charAt( i );
224 if ( c > 31 && c < 127 )
225 sb.append( c );
226 else
227 sb.append( '.' );
228 }
229 return sb.toString();
230 }
231
232 }
233 |
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