uk.ac.ebi.adfconverter.common.tools.regex
Class ConvertRegex

java.lang.Object
  uk.ac.ebi.adfconverter.common.tools.regex.ConvertRegex

public class ConvertRegex

extends java.lang.Object

This class convert a String in a Java regular expression. Due to problem while reading from. Specific characters are not considered as expected. Modified String into the correct character: \t The tab character ('\ u0009') // \n The newline (line feed) character ('\ u000A // \r The carriage-return character ('\ u000D') // \f The form-feed character ('\ u000C') // \a The alert (bell) character (' \ u0007') // \e The escape character ('\ u001B')

Since:

15 sept. 2004

Version:

1

Author:

Pierre MARGUERITE

Constructor Summary

ConvertRegex()

Method Summary

static java.lang.String

convert2Regex(java.lang.String regex) Converts String to regex.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConvertRegex

public ConvertRegex()

Method Detail

convert2Regex

public static java.lang.String convert2Regex(java.lang.String regex)

Converts String to regex. converts perl regex to java regex as well and converts String to a corresponding charater if need Characters // x The character x // \\ The backslash character // \0n The character with octal value 0n (0 <= n <= 7) // \0nn The character with octal value 0nn (0 <= n <= 7) // \0mnn The character with octal value 0mnn (0 <= m <= 3, 0 <= n <= 7) // \xhh The character with hexadecimal value 0xhh //// \ uhhhh The character with hexadecimal value 0xhhhh // \t The tab character (' ') // \n The newline (line feed) character (' ') // \r The carriage-return character (' ') // \f The form-feed character (' ') // \a The alert (bell) character ('') // \e The escape character ('') // \cx The control character corresponding to x // Character classes // [abc] a, b, or c (simple class) // [^abc] Any character except a, b, or c (negation) // [a-zA-Z] a through z or A through Z, inclusive (range) // [a-d[m-p]] a through d, or m through p: [a-dm-p] (union) // [a-z&&[def]] d, e, or f (intersection) // [a-z&&[^bc]] a through z, except for b and c: [ad-z] (subtraction) // [a-z&&[^m-p]] a through z, and not m through p: [a-lq-z](subtraction) // Predefined character classes // . Any character (may or may not match line terminators) // \d A digit: [0-9] // \D A non-digit: [^0-9] // \s A whitespace character: [ \t\n\x0B\f\r] // \S A non-whitespace character: [^\s] // \w A word character: [a-zA-Z_0-9] // \W A non-word character: [^\w] // // POSIX character classes (US-ASCII only) // \p{Lower} A lower-case alphabetic character: [a-z] // \p{Upper} An upper-case alphabetic character:[A-Z] // \p{ASCII} All ASCII:[\x00-\x7F] // \p{Alpha} An alphabetic character:[\p{Lower}\p{Upper}] // \p{Digit} A decimal digit: [0-9] // \p{Alnum} An alphanumeric character:[\p{Alpha}\p{Digit}] // \p{Punct} Punctuation: One of !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~ // \p{Graph} A visible character: [\p{Alnum}\p{Punct}] // \p{Print} A printable character: [\p{Graph}] // \p{Blank} A space or a tab: [ \t] // \p{Cntrl} A control character: [\x00-\x1F\x7F] // \p{XDigit} A hexadecimal digit: [0-9a-fA-F] // \p{Space} A whitespace character: [ \t\n\x0B\f\r] // Classes for Unicode blocks and categories // \p{InGreek} A character in the Greek block (simple block) // \p{Lu} An uppercase letter (simple category) // \p{Sc} A currency symbol // \P{InGreek} Any character except one in the Greek block (negation) // [\p{L}&&[^\p{Lu}]] Any letter except an uppercase letter (subtraction) // Boundary matchers // ^ The beginning of a line // $ The end of a line // \b A word boundary // \B A non-word boundary // \A The beginning of the input // \G The end of the previous match // \Z The end of the input but for the final terminator, if any // \z The end of the input // Greedy quantifiers // X? X, once or not at all // X* X, zero or more times // X+ X, one or more times // X{n} X, exactly n times // X{n,} X, at least n times // X{n,m} X, at least n but not more than m times // Reluctant quantifiers // X?? X, once or not at all // X*? X, zero or more times // X+? X, one or more times // X{n}? X, exactly n times // X{n,}? X, at least n times // X{n,m}? X, at least n but not more than m times // Possessive quantifiers // X?+ X, once or not at all // X*+ X, zero or more times // X++ X, one or more times // X{n}+ X, exactly n times // X{n,}+ X, at least n times // X{n,m}+ X, at least n but not more than m times // // this.logical operators // XY X followed by Y // X|Y Either X or Y // (X) X, as a capturing group // Back references // \n Whatever the nth capturing group matched // Quotation // \ Nothing, but quotes the following character // \Q Nothing, but quotes all characters until \E // \E Nothing, but ends quoting started by \Q // Special constructs (non-capturing) // (?:X) X, as a non-capturing group // (?idmsux-idmsux) Nothing, but turns match flags on - off // (?idmsux-idmsux:X) X, as a non-capturing group with the given flags on - off // (?=X) X, via zero-width positive lookahead // (?!X) X, via zero-width negative lookahead // (?<=X) X, via zero-width positive lookbehind // (?X) X, as an independent, non-capturing group dont deal with every charachter

Parameters:

regex - the regex String to convert in a correct Java regular expression

Returns:

the corresponding String as correct regular expression