Difference between revisions of "Utf8.widthindex"
From GiderosMobile
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'''Available since:''' Gideros 2016.06<br/> | '''Available since:''' Gideros 2016.06<br/> | ||
=== Description === | === Description === | ||
| − | Return the character index at given location in string s. this is a reverse operation of utf8.width(). this function return a index of location, and a offset in in UTF-8 encoding. e.g. if cursor is at the second column (middle) of the wide char, offset will be 2. the width of character at idx is returned, also. | + | <translate>Return the character index at given location in string s. this is a reverse operation of utf8.width(). this function return a index of location, and a offset in in UTF-8 encoding. e.g. if cursor is at the second column (middle) of the wide char, offset will be 2. the width of character at idx is returned, also.</translate> |
<source lang="lua"> | <source lang="lua"> | ||
(number) = utf8.widthindex(s,location,ambi_is_double,default_width) | (number) = utf8.widthindex(s,location,ambi_is_double,default_width) | ||
</source> | </source> | ||
=== Parameters === | === Parameters === | ||
| − | '''s''': (string) | + | '''s''': (string) <translate></translate> <br/> |
| − | '''location''': (number) | + | '''location''': (number) <translate></translate> <br/> |
| − | '''ambi_is_double''': (boolean) | + | '''ambi_is_double''': (boolean) <translate></translate> '''optional'''<br/> |
| − | '''default_width''': (number) | + | '''default_width''': (number) <translate></translate> '''optional'''<br/> |
=== Return values === | === Return values === | ||
| − | '''Returns''' (number) character index at given location<br/> | + | '''Returns''' (number) <translate>character index at given location</translate><br/> |
Revision as of 14:34, 23 August 2018
Available since: Gideros 2016.06
Description
Return the character index at given location in string s. this is a reverse operation of utf8.width(). this function return a index of location, and a offset in in UTF-8 encoding. e.g. if cursor is at the second column (middle) of the wide char, offset will be 2. the width of character at idx is returned, also.
(number) = utf8.widthindex(s,location,ambi_is_double,default_width)
Parameters
s: (string)
location: (number)
ambi_is_double: (boolean) optional
default_width: (number) optional
Return values
Returns (number) character index at given location
