net.sf.mmm.util.pattern.base
Class PathPatternCompiler

java.lang.Object
  net.sf.mmm.util.pattern.base.AbstractGlobPatternCompiler
      net.sf.mmm.util.pattern.base.PathPatternCompiler

All Implemented Interfaces:

PatternCompiler

public class PathPatternCompiler
extends AbstractGlobPatternCompiler

This is an implementation of the PatternCompiler interface that compiles path-glob-patterns. A path-glob-pattern is like a glob-pattern but more specific for matching directory paths:

• '?' matches any character except for a slash ( '/' or '\\').
• A single '*' matches a sequence of characters excluding slashes including the empty sequence.
• '**' matches any sequence of characters (including slashes).
• the character '/' matches a slash ('/' or '\\').
• '**/' matches any sequence terminated by a slash as well as the empty sequence.

The idea is taken from ant even though it might be slightly different.
Examples:

• A*bc?e matches Abcde or AFOObarbcxe but NOT abcde or Abce.

Since:

1.0.0

Author:

Joerg Hohwiller (hohwille at users.sourceforge.net)

Field Summary

static PatternCompiler

INSTANCE A singleton instance of this instance.

Constructor Summary

PathPatternCompiler()
The constructor.

Method Summary

protected int

process(char[] chars, int charIndex, StringBuilder buffer) This method processes one or many characters from chars starting at the given charIndex and adds the translated regexp-sequence to buffer.

Methods inherited from class net.sf.mmm.util.pattern.base.AbstractGlobPatternCompiler

compile, convertPattern, isRequireWildcard

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

public static final PatternCompiler INSTANCE

A singleton instance of this instance.

Constructor Detail

PathPatternCompiler

public PathPatternCompiler()

The constructor.

Method Detail

process

protected int process(char[] chars,
                      int charIndex,
                      StringBuilder buffer)

This method processes one or many characters from chars starting at the given charIndex and adds the translated regexp-sequence to buffer.

Overrides:

process in class AbstractGlobPatternCompiler

Parameters:

chars - are the characters of the original pattern string.

charIndex - is the current index in chars.

buffer - is where the translated regexp-pattern is appended to.

Returns:

the index of the next character that has NOT yet been consumed (typically charIndex + 1).