+++ /dev/null
-.TH PCRESYNTAX 3
-.SH NAME
-PCRE - Perl-compatible regular expressions
-.SH "PCRE REGULAR EXPRESSION SYNTAX SUMMARY"
-.rs
-.sp
-The full syntax and semantics of the regular expressions that are supported by
-PCRE are described in the
-.\" HREF
-\fBpcrepattern\fP
-.\"
-documentation. This document contains just a quick-reference summary of the
-syntax.
-.
-.
-.SH "QUOTING"
-.rs
-.sp
- \ex where x is non-alphanumeric is a literal x
- \eQ...\eE treat enclosed characters as literal
-.
-.
-.SH "CHARACTERS"
-.rs
-.sp
- \ea alarm, that is, the BEL character (hex 07)
- \ecx "control-x", where x is any character
- \ee escape (hex 1B)
- \ef formfeed (hex 0C)
- \en newline (hex 0A)
- \er carriage return (hex 0D)
- \et tab (hex 09)
- \eddd character with octal code ddd, or backreference
- \exhh character with hex code hh
- \ex{hhh..} character with hex code hhh..
-.
-.
-.SH "CHARACTER TYPES"
-.rs
-.sp
- . any character except newline;
- in dotall mode, any character whatsoever
- \eC one byte, even in UTF-8 mode (best avoided)
- \ed a decimal digit
- \eD a character that is not a decimal digit
- \eh a horizontal whitespace character
- \eH a character that is not a horizontal whitespace character
- \ep{\fIxx\fP} a character with the \fIxx\fP property
- \eP{\fIxx\fP} a character without the \fIxx\fP property
- \eR a newline sequence
- \es a whitespace character
- \eS a character that is not a whitespace character
- \ev a vertical whitespace character
- \eV a character that is not a vertical whitespace character
- \ew a "word" character
- \eW a "non-word" character
- \eX an extended Unicode sequence
-.sp
-In PCRE, \ed, \eD, \es, \eS, \ew, and \eW recognize only ASCII characters.
-.
-.
-.SH "GENERAL CATEGORY PROPERTY CODES FOR \ep and \eP"
-.rs
-.sp
- C Other
- Cc Control
- Cf Format
- Cn Unassigned
- Co Private use
- Cs Surrogate
-.sp
- L Letter
- Ll Lower case letter
- Lm Modifier letter
- Lo Other letter
- Lt Title case letter
- Lu Upper case letter
- L& Ll, Lu, or Lt
-.sp
- M Mark
- Mc Spacing mark
- Me Enclosing mark
- Mn Non-spacing mark
-.sp
- N Number
- Nd Decimal number
- Nl Letter number
- No Other number
-.sp
- P Punctuation
- Pc Connector punctuation
- Pd Dash punctuation
- Pe Close punctuation
- Pf Final punctuation
- Pi Initial punctuation
- Po Other punctuation
- Ps Open punctuation
-.sp
- S Symbol
- Sc Currency symbol
- Sk Modifier symbol
- Sm Mathematical symbol
- So Other symbol
-.sp
- Z Separator
- Zl Line separator
- Zp Paragraph separator
- Zs Space separator
-.
-.
-.SH "SCRIPT NAMES FOR \ep AND \eP"
-.rs
-.sp
-Arabic,
-Armenian,
-Balinese,
-Bengali,
-Bopomofo,
-Braille,
-Buginese,
-Buhid,
-Canadian_Aboriginal,
-Carian,
-Cham,
-Cherokee,
-Common,
-Coptic,
-Cuneiform,
-Cypriot,
-Cyrillic,
-Deseret,
-Devanagari,
-Ethiopic,
-Georgian,
-Glagolitic,
-Gothic,
-Greek,
-Gujarati,
-Gurmukhi,
-Han,
-Hangul,
-Hanunoo,
-Hebrew,
-Hiragana,
-Inherited,
-Kannada,
-Katakana,
-Kayah_Li,
-Kharoshthi,
-Khmer,
-Lao,
-Latin,
-Lepcha,
-Limbu,
-Linear_B,
-Lycian,
-Lydian,
-Malayalam,
-Mongolian,
-Myanmar,
-New_Tai_Lue,
-Nko,
-Ogham,
-Old_Italic,
-Old_Persian,
-Ol_Chiki,
-Oriya,
-Osmanya,
-Phags_Pa,
-Phoenician,
-Rejang,
-Runic,
-Saurashtra,
-Shavian,
-Sinhala,
-Sudanese,
-Syloti_Nagri,
-Syriac,
-Tagalog,
-Tagbanwa,
-Tai_Le,
-Tamil,
-Telugu,
-Thaana,
-Thai,
-Tibetan,
-Tifinagh,
-Ugaritic,
-Vai,
-Yi.
-.
-.
-.SH "CHARACTER CLASSES"
-.rs
-.sp
- [...] positive character class
- [^...] negative character class
- [x-y] range (can be used for hex characters)
- [[:xxx:]] positive POSIX named set
- [[:^xxx:]] negative POSIX named set
-.sp
- alnum alphanumeric
- alpha alphabetic
- ascii 0-127
- blank space or tab
- cntrl control character
- digit decimal digit
- graph printing, excluding space
- lower lower case letter
- print printing, including space
- punct printing, excluding alphanumeric
- space whitespace
- upper upper case letter
- word same as \ew
- xdigit hexadecimal digit
-.sp
-In PCRE, POSIX character set names recognize only ASCII characters. You can use
-\eQ...\eE inside a character class.
-.
-.
-.SH "QUANTIFIERS"
-.rs
-.sp
- ? 0 or 1, greedy
- ?+ 0 or 1, possessive
- ?? 0 or 1, lazy
- * 0 or more, greedy
- *+ 0 or more, possessive
- *? 0 or more, lazy
- + 1 or more, greedy
- ++ 1 or more, possessive
- +? 1 or more, lazy
- {n} exactly n
- {n,m} at least n, no more than m, greedy
- {n,m}+ at least n, no more than m, possessive
- {n,m}? at least n, no more than m, lazy
- {n,} n or more, greedy
- {n,}+ n or more, possessive
- {n,}? n or more, lazy
-.
-.
-.SH "ANCHORS AND SIMPLE ASSERTIONS"
-.rs
-.sp
- \eb word boundary (only ASCII letters recognized)
- \eB not a word boundary
- ^ start of subject
- also after internal newline in multiline mode
- \eA start of subject
- $ end of subject
- also before newline at end of subject
- also before internal newline in multiline mode
- \eZ end of subject
- also before newline at end of subject
- \ez end of subject
- \eG first matching position in subject
-.
-.
-.SH "MATCH POINT RESET"
-.rs
-.sp
- \eK reset start of match
-.
-.
-.SH "ALTERNATION"
-.rs
-.sp
- expr|expr|expr...
-.
-.
-.SH "CAPTURING"
-.rs
-.sp
- (...) capturing group
- (?<name>...) named capturing group (Perl)
- (?'name'...) named capturing group (Perl)
- (?P<name>...) named capturing group (Python)
- (?:...) non-capturing group
- (?|...) non-capturing group; reset group numbers for
- capturing groups in each alternative
-.
-.
-.SH "ATOMIC GROUPS"
-.rs
-.sp
- (?>...) atomic, non-capturing group
-.
-.
-.
-.
-.SH "COMMENT"
-.rs
-.sp
- (?#....) comment (not nestable)
-.
-.
-.SH "OPTION SETTING"
-.rs
-.sp
- (?i) caseless
- (?J) allow duplicate names
- (?m) multiline
- (?s) single line (dotall)
- (?U) default ungreedy (lazy)
- (?x) extended (ignore white space)
- (?-...) unset option(s)
-.sp
-The following is recognized only at the start of a pattern or after one of the
-newline-setting options with similar syntax:
-.sp
- (*UTF8) set UTF-8 mode
-.
-.
-.SH "LOOKAHEAD AND LOOKBEHIND ASSERTIONS"
-.rs
-.sp
- (?=...) positive look ahead
- (?!...) negative look ahead
- (?<=...) positive look behind
- (?<!...) negative look behind
-.sp
-Each top-level branch of a look behind must be of a fixed length.
-.
-.
-.SH "BACKREFERENCES"
-.rs
-.sp
- \en reference by number (can be ambiguous)
- \egn reference by number
- \eg{n} reference by number
- \eg{-n} relative reference by number
- \ek<name> reference by name (Perl)
- \ek'name' reference by name (Perl)
- \eg{name} reference by name (Perl)
- \ek{name} reference by name (.NET)
- (?P=name) reference by name (Python)
-.
-.
-.SH "SUBROUTINE REFERENCES (POSSIBLY RECURSIVE)"
-.rs
-.sp
- (?R) recurse whole pattern
- (?n) call subpattern by absolute number
- (?+n) call subpattern by relative number
- (?-n) call subpattern by relative number
- (?&name) call subpattern by name (Perl)
- (?P>name) call subpattern by name (Python)
- \eg<name> call subpattern by name (Oniguruma)
- \eg'name' call subpattern by name (Oniguruma)
- \eg<n> call subpattern by absolute number (Oniguruma)
- \eg'n' call subpattern by absolute number (Oniguruma)
- \eg<+n> call subpattern by relative number (PCRE extension)
- \eg'+n' call subpattern by relative number (PCRE extension)
- \eg<-n> call subpattern by relative number (PCRE extension)
- \eg'-n' call subpattern by relative number (PCRE extension)
-.
-.
-.SH "CONDITIONAL PATTERNS"
-.rs
-.sp
- (?(condition)yes-pattern)
- (?(condition)yes-pattern|no-pattern)
-.sp
- (?(n)... absolute reference condition
- (?(+n)... relative reference condition
- (?(-n)... relative reference condition
- (?(<name>)... named reference condition (Perl)
- (?('name')... named reference condition (Perl)
- (?(name)... named reference condition (PCRE)
- (?(R)... overall recursion condition
- (?(Rn)... specific group recursion condition
- (?(R&name)... specific recursion condition
- (?(DEFINE)... define subpattern for reference
- (?(assert)... assertion condition
-.
-.
-.SH "BACKTRACKING CONTROL"
-.rs
-.sp
-The following act immediately they are reached:
-.sp
- (*ACCEPT) force successful match
- (*FAIL) force backtrack; synonym (*F)
-.sp
-The following act only when a subsequent match failure causes a backtrack to
-reach them. They all force a match failure, but they differ in what happens
-afterwards. Those that advance the start-of-match point do so only if the
-pattern is not anchored.
-.sp
- (*COMMIT) overall failure, no advance of starting point
- (*PRUNE) advance to next starting character
- (*SKIP) advance start to current matching position
- (*THEN) local failure, backtrack to next alternation
-.
-.
-.SH "NEWLINE CONVENTIONS"
-.rs
-.sp
-These are recognized only at the very start of the pattern or after a
-(*BSR_...) or (*UTF8) option.
-.sp
- (*CR) carriage return only
- (*LF) linefeed only
- (*CRLF) carriage return followed by linefeed
- (*ANYCRLF) all three of the above
- (*ANY) any Unicode newline sequence
-.
-.
-.SH "WHAT \eR MATCHES"
-.rs
-.sp
-These are recognized only at the very start of the pattern or after a
-(*...) option that sets the newline convention or UTF-8 mode.
-.sp
- (*BSR_ANYCRLF) CR, LF, or CRLF
- (*BSR_UNICODE) any Unicode newline sequence
-.
-.
-.SH "CALLOUTS"
-.rs
-.sp
- (?C) callout
- (?Cn) callout with data n
-.
-.
-.SH "SEE ALSO"
-.rs
-.sp
-\fBpcrepattern\fP(3), \fBpcreapi\fP(3), \fBpcrecallout\fP(3),
-\fBpcrematching\fP(3), \fBpcre\fP(3).
-.
-.
-.SH AUTHOR
-.rs
-.sp
-.nf
-Philip Hazel
-University Computing Service
-Cambridge CB2 3QH, England.
-.fi
-.
-.
-.SH REVISION
-.rs
-.sp
-.nf
-Last updated: 11 April 2009
-Copyright (c) 1997-2009 University of Cambridge.
-.fi
projects / vuplus_xbmc / blobdiff