How Can I Rewrite Java's \w, \b, and Other Regex Shortcuts for Full Unicode Compatibility?-javaTutorial-php.cn

How Can I Rewrite Java's w, b, and Other Regex Shortcuts for Full Unicode Compatibility?

Rewriting w and b in Java Regexes for Unicode Compatibility

Java's w and b regular expression shortcuts have limited Unicode support. To address this, you can rewrite these shortcuts using the following Unicode-aware definitions:

\w (words) => [\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]]
\W (non-words) => [^\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]]

\b (word boundary) => (?:(?<=[\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]])(?![\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]])|(?<![\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]])(?=[\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]]))
\B (non-word boundary) => (?:(?<=[\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]])(?=[\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]])|(?<![\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]])(?![\pL\pM\p{Nd}\p{Nl}\p{Pc}[\p{InEnclosedAlphanumerics}&amp;&amp;\p{So}]]))

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Other Unicode-Aware Regexp Shortcuts:

u0009-u000Du0020u0085u00A0u1680u180Eu2000-u200Au2028u2029u202Fu205Fu3000 ↩
u000A-u000Du0085u2028u2029 ↩
u0009u0020u00A0u1680u180Eu2000u2001-u200Au202Fu205Fu3000 ↩

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Regexp Shortcut	Unicode-Aware Definition
s (whitespace)	[u0009-u000Du0020u0085u00A0u1680u180Eu2000-u200Au2028u2029u202Fu205Fu3000]
S (non-whitespace)	¹
v (vertical whitespace)	[u000A-u000Du0085u2028u2029]
V (non-vertical whitespace)	²
h (horizontal whitespace)	[u0009u0020u00A0u1680u180Eu2000-u200Au202Fu205Fu3000]
H (non-horizontal whitespace)	³
d (digits)	p{Nd}
D (non-digits)	P{Nd}
R (line break)	(?:(?>u000Du000A)	[u000Au000Bu000Cu000Du0085u2028u2029])
X (extended grapheme cluster)	(?>PMpM*)