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54  * Portions of this software are based upon software originally written
55  * by Daniel F. Savarese. We appreciate his contributions.
56  */
57 import java.util.*;
58 import org.apache.oro.text.regex.*;
59 import org.apache.oro.text.awk.*;
60
61 /**
62  * This is a test program demonstrating the use of the Util.split() method.
63  * It is the same as the version in the OROMatcher distribution except that
64  * it uses Awk classes instead of Perl classes.
65  *
66  @author <a HREF="dfs@savarese.org">Daniel F. Savarese</a>
67  @version $Id: splitExample.java,v 1.1.1.1 2000/07/23 23:08:48 jon Exp $
68  */
69 public final class splitExample {
70
71   /**
72    * A good way for you to understand the split() method is to play around
73    * with it by using this test program. The program takes 2 or 3 arguments
74    * as follows:
75    * java splitExample regex input [split limit]
76    * regex - A regular expression used to split the input.
77    * input - A string to be used as input for split().
78    * split limit - An optional argument limiting the size of the list returned
79    * by split(). If no limit is given, the limit used is
80    * Util.SPLIT_ALL. Setting the limit to 1 generally doesn't
81    * make any sense.
82    *
83    * Try the following two command lines to see how split limit works:
84    * java splitExample '[:|]' '1:2|3:4'
85    * java splitExample '[:|]' '1:2|3:4' 3
86    *
87    */
88   public static final void main(String JavaDoc args[]) {
89     int limit, i;
90     String JavaDoc regularExpression, input;
91     Vector results;
92     Pattern pattern = null;
93     PatternMatcher matcher;
94     PatternCompiler compiler;
95
96     // Make sure there are sufficient arguments
97 if(args.length < 2) {
98       System.err.println("Usage: splitExample regex input [split limit]");
99       System.exit(1);
100     }
101
102     regularExpression = args[0];
103     input = args[1];
104
105     if(args.length > 2)
106       limit = Integer.parseInt(args[2]);
107     else
108       limit = Util.SPLIT_ALL;
109
110     // Create AwkCompiler and AwkMatcher instances.
111 compiler = new AwkCompiler();
112     matcher = new AwkMatcher();
113
114     // Attempt to compile the pattern. If the pattern is not valid,
115 // report the error and exit.
116 try {
117       pattern = compiler.compile(regularExpression);
118       System.out.println("split regex: " + regularExpression);
119     } catch(MalformedPatternException e){
120       System.err.println("Bad pattern.");
121       System.err.println(e.getMessage());
122       System.exit(1);
123     }
124
125     // Split the input and print the resulting list.
126 System.out.println("split results: ");
127     results = Util.split(matcher, pattern, input, limit);
128     for(i = 0; i < results.size(); i++){
129       System.out.println("item " + i + ": " + (String JavaDoc)results.elementAt(i));
130     }
131   }
132 }
133
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