class Object

Constants

U

This version of UnicodeUtils implements algorithms as defined by version 6.2.0 of the Unicode standard. Each public method is declared as a module_function of the UnicodeUtils module and defined in a separate file under the unicode_utils directory.

As a convenience, the toplevel unicode_utils file loads all methods (needs lots of memory!). Also as a convenience for irb usage, the file unicode_utils/u assigns the UnicodeUtils module to the toplevel U constant and loads all methods:

$ irb -r unicode_utils/u
irb(main):001:0> U.grep /angstrom/
=> [#<U+212B "Å" ANGSTROM SIGN utf8:e2,84,ab>]

If a method takes a character as argument (usually named char), that argument can be an integer or a string (in which case the first code point counts) or any other object that responds to ord by returning an integer.

All methods are non-destructive, string return values are in the same encoding as strings passed as arguments, which must be in one of the Unicode encodings.

Highlevel methods are:

UnicodeUtils.upcase: full conversion to uppercase
UnicodeUtils.downcase: full conversion to lowercase
UnicodeUtils.titlecase: full conversion to titlecase
UnicodeUtils.casefold: case folding (case insensitive string comparison)
UnicodeUtils.nfd: Normalization Form D
UnicodeUtils.nfc: Normalization Form C
UnicodeUtils.nfkd: Normalization Form KD
UnicodeUtils.nfkc: Normalization Form KC
UnicodeUtils.each_grapheme: grapheme boundaries
UnicodeUtils.each_word: word boundaries
UnicodeUtils.char_name: character names
UnicodeUtils.grep: find code points by character name