unicoderegexp

Various regular expressions for unicode character classes (letter, punctuation, number, etc.) and helper functions for composing them.

Used by the purify library.

The module exports a bunch of useful RegExps each with a single character class in them:

• letter
• mark
• number
• punctuation
• symbol
• separator
• other
• visible
• printable

unicodeRegExp.visible.test("a"); // true
unicodeRegExp.visible.test(" "); // false
unicodeRegExp.visible.test("\u00a0"); // false -- a non-breaking space is not visible

To validate an entire string you need to build a new RegExp:

var visibleStringRegExp = new RegExp('^' + unicodeRegExp.visible.source + '*$');
visibleStringRegExp.test("foobar"); // true
visibleStringRegExp.test("foo bar"); // false because of the space

unicodeRegExp.removeCharacterFromCharacterClassRegExp(/[æøå]/, 'æ'); // /[\u00f8\u00e5]/
unicodeRegExp.spliceCharacterClassRegExps(/[a-b]/, /[c-d]/); // /[a-bc-d]/

The info about which characters belong to which classes was taken from the XRegExp library and its Unicode plugin.

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