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ABENREGEX_XPATH_SYNTAX_SPECIALS - REGEX XPATH SYNTAX SPECIALS
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- Special Characters
The following tables summarize the special characters in XPath regular expressions.
Pattern Syntax
Single Character Escapes
| Syntax | Description |
| \n | line feed (0x0A) |
| \r | carriage return (0x0D) |
| \t | tab (0x09) |
| \\ | literal \ |
| \| | literal | |
| \. | literal . |
| \- | literal - |
| \^ | literal ^ |
| \$ | literal $ |
| \? | literal ? |
| \* | literal * |
| \+ | literal + |
| \{ | literal { |
| \} | literal } |
| \( | literal ( |
| \) | literal ) |
| \[ | literal [ |
| \] | literal ] |
When enabling the RELAXED_ESCAPES option while constructing an XPath regular expression using CL_ABAP_REGEX=>CREATE_XPATH2, a character sequence \x that does not appear in the table above or has no other special meaning will match a literal x. Otherwise, if the RELAXED_ESCAPES option was disabled, a character sequence \x will raise an exception.
Multi Character Escapes
| Syntax | Description |
| . | any character except line feed and carriage return |
| \d | a digit (respecting Unicode character properties) |
| \D | a character that is not a digit |
| \p{xx} | a character with the xx Unicode character property (see below) |
| \P{xx} | a character without the xx Unicode character property (see below) |
| \s | a white space character (respecting Unicode character properties) |
| \S | a character that is not a white space character |
| \w | a "word" character (respecting Unicode character properties) |
| \W | a "non-word" character |
| \i | a character that may be the first character of an XML name |
| \I | a character that may not be the first character of an XML name |
| \c | a character that may occur after the first character in an XML name |
| \C | a character that may not occur after the first character in an XML name |
Category Escapes
| Syntax | Description |
| \p{xx} | a character with the xx Unicode character property (see below) |
| \P{xx} | a character without the xx Unicode character property (see below) |
General Categories for Properties \p and \P
Based on the general categories as defined by the Unicode standard.
| Category Identifier | Description |
| C | Other |
| Cc | Control |
| Cf | Format |
| Cn | Unassigned |
| Co | Private use |
| L | Letter |
| Ll | Lower case letter |
| Lm | Modifier letter |
| Lo | Other letter |
| Lt | Title case letter |
| Lu | Upper case letter |
| M | Mark |
| Mc | Spacing mark |
| Me | Enclosing mark |
| Mn | Non-spacing mark |
| N | Number |
| Nd | Decimal number |
| Nl | Letter number |
| No | Other number |
| P | Punctuation |
| Pc | Connector punctuation |
| Pd | Dash punctuation |
| Pe | Close punctuation |
| Pf | Final punctuation |
| Pi | Initial punctuation |
| Po | Other punctuation |
| Ps | Open punctuation |
| S | Symbol |
| Sc | Currency symbol |
| Sk | Modifier symbol |
| Sm | Mathematical symbol |
| So | Other symbol |
| Z | Separator |
| Zl | Line separator |
| Zp | Paragraph separator |
| Zs | Space separator |
Block Names for Properties \p and \P
Based on the block names as defined by the Unicode standard.
The following block names can be used regardless of current UNICODE_HANDLING:
| Block Identifier | Start Code | End Code |
| IsBasicLatin | #x0000 | #x007F |
| IsLatin-1Supplement | #x0080 | #x00FF |
| IsLatinExtended-A | #x0100 | #x017F |
| IsLatinExtended-B | #x0180 | #x024F |
| IsIPAExtensions | #x0250 | #x02AF |
| IsSpacingModifierLetters | #x02B0 | #x02FF |
| IsCombiningDiacriticalMarks | #x0300 | #x036F |
| IsGreek | #x0370 | #x03FF |
| IsCyrillic | #x0400 | #x04FF |
| IsArmenian | #x0530 | #x058F |
| IsHebrew | #x0590 | #x05FF |
| IsArabic | #x0600 | #x06FF |
| IsSyriac | #x0700 | #x074F |
| IsThaana | #x0780 | #x07BF |
| IsDevanagari | #x0900 | #x097F |
| IsBengali | #x0980 | #x09FF |
| IsGurmukhi | #x0A00 | #x0A7F |
| IsGujarati | #x0A80 | #x0AFF |
| IsOriya | #x0B00 | #x0B7F |
| IsTamil | #x0B80 | #x0BFF |
| IsTelugu | #x0C00 | #x0C7F |
| IsKannada | #x0C80 | #x0CFF |
| IsMalayalam | #x0D00 | #x0D7F |
| IsSinhala | #x0D80 | #x0DFF |
| IsThai | #x0E00 | #x0E7F |
| IsLao | #x0E80 | #x0EFF |
| IsTibetan | #x0F00 | #x0FFF |
| IsMyanmar | #x1000 | #x109F |
| IsGeorgian | #x10A0 | #x10FF |
| IsHangulJamo | #x1100 | #x11FF |
| IsEthiopic | #x1200 | #x137F |
| IsCherokee | #x13A0 | #x13FF |
| IsUnifiedCanadianAboriginalSyllabics | #x1400 | #x167F |
| IsOgham | #x1680 | #x169F |
| IsRunic | #x16A0 | #x16FF |
| IsKhmer | #x1780 | #x17FF |
| IsMongolian | #x1800 | #x18AF |
| IsLatinExtendedAdditional | #x1E00 | #x1EFF |
| IsGreekExtended | #x1F00 | #x1FFF |
| IsGeneralPunctuation | #x2000 | #x206F |
| IsSuperscriptsandSubscripts | #x2070 | #x209F |
| IsCurrencySymbols | #x20A0 | #x20CF |
| IsCombiningMarksforSymbols | #x20D0 | #x20FF |
| IsLetterlikeSymbols | #x2100 | #x214F |
| IsNumberForms | #x2150 | #x218F |
| IsArrows | #x2190 | #x21FF |
| IsMathematicalOperators | #x2200 | #x22FF |
| IsMiscellaneousTechnical | #x2300 | #x23FF |
| IsControlPictures | #x2400 | #x243F |
| IsOpticalCharacterRecognition | #x2440 | #x245F |
| IsEnclosedAlphanumerics | #x2460 | #x24FF |
| IsBoxDrawing | #x2500 | #x257F |
| IsBlockElements | #x2580 | #x259F |
| IsGeometricShapes | #x25A0 | #x25FF |
| IsMiscellaneousSymbols | #x2600 | #x26FF |
| IsDingbats | #x2700 | #x27BF |
| IsBraillePatterns | #x2800 | #x28FF |
| IsCJKRadicalsSupplement | #x2E80 | #x2EFF |
| IsKangxiRadicals | #x2F00 | #x2FDF |
| IsIdeographicDescriptionCharacters | #x2FF0 | #x2FFF |
| IsCJKSymbolsandPunctuation | #x3000 | #x303F |
| IsHiragana | #x3040 | #x309F |
| IsKatakana | #x30A0 | #x30FF |
| IsBopomofo | #x3100 | #x312F |
| IsHangulCompatibilityJamo | #x3130 | #x318F |
| IsKanbun | #x3190 | #x319F |
| IsBopomofoExtended | #x31A0 | #x31BF |
| IsEnclosedCJKLettersandMonths | #x3200 | #x32FF |
| IsCJKCompatibility | #x3300 | #x33FF |
| IsCJKUnifiedIdeographsExtensionA | #x3400 | #x4DB5 |
| IsCJKUnifiedIdeographs | #x4E00 | #x9FFF |
| IsYiSyllables | #xA000 | #xA48F |
| IsYiRadicals | #xA490 | #xA4CF |
| IsHangulSyllables | #xAC00 | #xD7A3 |
| IsPrivateUse | #xE000 | #xF8FF |
| IsCJKCompatibilityIdeographs | #xF900 | #xFAFF |
| IsAlphabeticPresentationForms | #xFB00 | #xFB4F |
| IsArabicPresentationForms-A | #xFB50 | #xFDFF |
| IsCombiningHalfMarks | #xFE20 | #xFE2F |
| IsCJKCompatibilityForms | #xFE30 | #xFE4F |
| IsSmallFormVariants | #xFE50 | #xFE6F |
| IsArabicPresentationForms-B | #xFE70 | #xFEFE |
| IsSpecials | #xFEFF | #xFEFF |
| IsHalfwidthandFullwidthForms | #xFF00 | #xFFEF |
| IsSpecials | #xFFF0 | #xFFFD |
The following block names can only be used when UNICODE_HANDLING is set to STRICT or IGNORE, but not when set to RELAXED, as they do not overlap with the Basic Multilingual Plane:
| Block Identifier | Start Code | End Code |
| IsByzantineMusicalSymbols | #x1D000 | #x1D0FF |
| IsMusicalSymbols | #x1D100 | #x1D1FF |
| IsMathematicalAlphanumericSymbols | #x1D400 | #x1D7FF |
| IsCJKUnifiedIdeographsExtensionB | #x20000 | #x2A6D6 |
| IsCJKCompatibilityIdeographsSupplement | #x2F800 | #x2FA1F |
| IsTags | #xE0000 | #xE007F |
Quantifiers
| Syntax | Description |
| ? | 0 or 1, greedy |
| ?? | 0 or 1, lazy |
| * | 0 or more, greedy |
| *? | 0 or more, lazy |
| + | 1 or more, greedy |
| +? | 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, lazy |
| {n,} | n or more, greedy |
| {n,}? | n or more, lazy |
Grouping and Capturing
| Syntax | Description |
| (...) | capture group |
| (?:...) | non-capture group |
Anchors
| Syntax | Description |
| ^ | start of subject (also after an internal line break, that is a line feed that does not occur at the end of the subject, in multiline mode) |
| $ | end of subject (also before line break in multiline mode) |
Backreferences
| Syntax | Description |
| \n | reference by number n;\lbr a capture group cannot be referenced from within itself;\lbr a backreference can be followed by more digits; digits are only taken into account if the resulting number is smaller to or equal the amount of opening parentheses seen so far in the pattern; e.g. the pattern (a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\11 (that includes 11 capture groups) would match the string abcdefghijkk, but the pattern (a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\12 (that also includes 11 capture groups) would match the string abcdefghijka2 |
Alternation
| Syntax | Description |
| | | start of alternative branch |
Character Classes
| Syntax | Description |
| [...] | positive character class |
| [^...] | negative character class |
| [x-y] | range |
| [a-[b]] | character class subtraction (can be nested) |
Replacement Syntax
The syntax of replacement patterns for XPath regular expressions is the same as for PCRE regular expressions.
ROGBILLS - Synchronize billing plans CPI1466 during Backup
This documentation is copyright by SAP AG.
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