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pspdash
Class Perl5Util  

java.lang.Object
  pspdash.Perl5Util

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public class Perl5Util

extends java.lang.Object

Limit dependence upon a particular regular expression library. Eventually when process dashboard moves to Java 1.4, we can just use the built-in java.util.regex package. But this won't be a realistic option until Java 1.4 is available on all platforms, including Mac OS X

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Nested Class Summary
class	Perl5Util.RegexpException

 

Field Summary
private static java.util.Map	cachedPatterns
private static java.util.Map	cachedReplacers
private  Matcher	matcher
private static int	MAX_CACHED_PATTERNS

 

Constructor Summary

Perl5Util()

 

Method Summary
private static java.lang.String	getFlags(java.lang.String expression)           Extract the flags from a perl 5 regular expression
private static Pattern	getPattern(java.lang.String expression)           Get or create a new Pattern object for the given perl 5 regular expression
private static java.lang.String	getRegexp(java.lang.String expression)           Extract the pattern from a perl 5 regular expression
private static java.lang.String	getReplacement(java.lang.String expression)           Extract the replacement from a perl 5 subst expression
private static Replacer	getReplacer(java.lang.String expression)           Get or create a new Replacer object for the given perl 5 substitution expression
private static char	getSlashChar(java.lang.String expression)           Determine which character was used in lieu of the slashes
java.lang.String	group(int group)           Returns the contents of one of the parenthesized subgroups of the last match found.
private static Pattern	makePattern(java.lang.String expression)           Create a new Pattern object for the given perl 5 regular expression
private static Replacer	makeReplacer(java.lang.String expression)           Create a new Replacer object for the given perl 5 substitution expression
boolean	match(java.lang.String expression, char[] input)           Return true if the given input matches a substring within the given expression.
boolean	match(java.lang.String expression, java.lang.String input)           Return true if the given input matches a substring within the given expression.
java.lang.String	postMatch()           Returns the part of the input following that last match found
java.lang.String	preMatch()           Returns the part of the input preceding that last match found
static java.lang.String	regexpQuote(java.lang.String s)           Quote any special characters in the string to disable their special meaning.
private static void	showError(java.lang.String error)
java.lang.String	substitute(java.lang.String expression, java.lang.String input)           Perform the global substitution specified by expression on the given input, and return the result.
java.lang.String	substitute(java.lang.String oldExpr, java.lang.String newExpr, java.lang.String input)           Perform the global substitution specified by expression on the given input, and return the result.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

MAX_CACHED_PATTERNS

private static int MAX_CACHED_PATTERNS

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cachedPatterns

private static java.util.Map cachedPatterns

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matcher

private Matcher matcher

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cachedReplacers

private static java.util.Map cachedReplacers

Constructor Detail

Perl5Util

public Perl5Util()

Method Detail

getSlashChar

private static char getSlashChar(java.lang.String expression)

Determine which character was used in lieu of the slashes

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getRegexp

private static java.lang.String getRegexp(java.lang.String expression)

Extract the pattern from a perl 5 regular expression

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getReplacement

private static java.lang.String getReplacement(java.lang.String expression)

Extract the replacement from a perl 5 subst expression

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getFlags

private static java.lang.String getFlags(java.lang.String expression)

Extract the flags from a perl 5 regular expression

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makePattern

private static Pattern makePattern(java.lang.String expression)

Create a new Pattern object for the given perl 5 regular expression

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getPattern

private static Pattern getPattern(java.lang.String expression)

Get or create a new Pattern object for the given perl 5 regular expression

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match

public boolean match(java.lang.String expression,
                     char[] input)
              throws Perl5Util.RegexpException

Return true if the given input matches a substring within the given expression.

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match

public boolean match(java.lang.String expression,
                     java.lang.String input)
              throws Perl5Util.RegexpException

Return true if the given input matches a substring within the given expression.

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makeReplacer

private static Replacer makeReplacer(java.lang.String expression)

Create a new Replacer object for the given perl 5 substitution expression

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getReplacer

private static Replacer getReplacer(java.lang.String expression)

Get or create a new Replacer object for the given perl 5 substitution expression

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substitute

public java.lang.String substitute(java.lang.String expression,
                                   java.lang.String input)
                            throws Perl5Util.RegexpException

Perform the global substitution specified by expression on the given input, and return the result.

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substitute

public java.lang.String substitute(java.lang.String oldExpr,
                                   java.lang.String newExpr,
                                   java.lang.String input)
                            throws Perl5Util.RegexpException

Perform the global substitution specified by expression on the given input, and return the result.

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preMatch

public java.lang.String preMatch()

Returns the part of the input preceding that last match found

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postMatch

public java.lang.String postMatch()

Returns the part of the input following that last match found

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group

public java.lang.String group(int group)

Returns the contents of one of the parenthesized subgroups of the last match found.

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regexpQuote

public static java.lang.String regexpQuote(java.lang.String s)

Quote any special characters in the string to disable their special meaning. The resulting string can be used either as:

• a matching expression which will match the literal string s
• a substitution replacement that will insert the literal string s

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showError

private static void showError(java.lang.String error)

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