recompile (Jakarta-Regexp 1.5 API)

'recompile' is a command line tool that pre-compiles one or more regular expressions for use with the regular expression matcher class 'RE'. For example, the command java org.apache.regexp.recompile re1 "a*b" produces output like this:


    // Pre-compiled regular expression 'a*b'
    private static final char[] re1Instructions =
    {
        0x002a, 0x0000, 0x0007, 0x0041, 0x0001, 0xfffd, 0x0061,
        0x0041, 0x0001, 0x0004, 0x0062, 0x0045, 0x0000, 0x0000,
    };

    private static final REProgram re1 = new REProgram(re1Instructions);

By pasting this output into your code, you can construct a regular expression matcher (RE) object directly from the pre-compiled data (the character array re1), thus avoiding the overhead of compiling the expression at runtime. For example:


    RE r = new RE(re1);

Version: $Id: recompile.java 518156 2007-03-14 14:31:26Z vgritsenko $

Author: Jonathan Locke

Class recompile

Method Detail

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