Difference between revisions of "Utf8.width"
From GiderosMobile
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__NOTOC__ | __NOTOC__ | ||
'''Available since:''' Gideros 2016.06<br/> | '''Available since:''' Gideros 2016.06<br/> | ||
| + | '''Class:''' [[utf8]]<br/> | ||
| + | |||
=== Description === | === Description === | ||
| − | + | Calculates the width of UTF-8 string ''s''. | |
| − | < | + | <syntaxhighlight lang="lua"> |
(number) = utf8.width(s,ambi_is_double,default_width) | (number) = utf8.width(s,ambi_is_double,default_width) | ||
| − | </ | + | </syntaxhighlight> |
| − | '''s'' | + | |
| − | '''ambi_is_double''': (boolean) | + | If ''ambi_is_double'' is given, the ambiguous width character width is 2, otherwise it is 1. |
| − | '''default_width''': (number) | + | |
| − | '''Returns''' (number) width<br/> | + | fullwidth/doublewidth character width is 2, and other characters width is 1. |
| + | |||
| + | If ''default_width'' is given, it will be the width of unprintable character, used to display a non-character mark for these characters. | ||
| + | |||
| + | If ''s'' is a code point, returns the width of this code point. | ||
| + | |||
| + | === Parameters === | ||
| + | '''s''': (string) <br/> | ||
| + | '''ambi_is_double''': (boolean) '''optional'''<br/> | ||
| + | '''default_width''': (number) '''optional'''<br/> | ||
| + | |||
| + | === Return values === | ||
| + | '''Returns''' (number) string width<br/> | ||
| + | |||
| + | {{Utf8}} | ||
Latest revision as of 22:24, 1 December 2023
Available since: Gideros 2016.06
Class: utf8
Description
Calculates the width of UTF-8 string s.
(number) = utf8.width(s,ambi_is_double,default_width)
If ambi_is_double is given, the ambiguous width character width is 2, otherwise it is 1.
fullwidth/doublewidth character width is 2, and other characters width is 1.
If default_width is given, it will be the width of unprintable character, used to display a non-character mark for these characters.
If s is a code point, returns the width of this code point.
Parameters
s: (string)
ambi_is_double: (boolean) optional
default_width: (number) optional
Return values
Returns (number) string width
