Difference between revisions of "Utf8.widthindex"

From GiderosMobile
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__NOTOC__
 
__NOTOC__
'''Available since:''' Gideros 2016.06<br/>
+
'''<translate>Available since</translate>:''' Gideros 2016.06<br/>
=== Description ===
+
=== <translate>Description</translate> ===
 
<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>
 
<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 ===
+
=== <translate>Parameters</translate> ===
 
'''s''': (string) <translate></translate> <br/>
 
'''s''': (string) <translate></translate> <br/>
 
'''location''': (number) <translate></translate> <br/>
 
'''location''': (number) <translate></translate> <br/>
 
'''ambi_is_double''': (boolean) <translate></translate> '''optional'''<br/>
 
'''ambi_is_double''': (boolean) <translate></translate> '''optional'''<br/>
 
'''default_width''': (number) <translate></translate> '''optional'''<br/>
 
'''default_width''': (number) <translate></translate> '''optional'''<br/>
=== Return values ===
+
=== <translate>Return values</translate> ===
'''Returns''' (number) <translate>character index at given location</translate><br/>
+
'''<translate>Returns</translate>''' (number) <translate>character index at given location</translate><br/>

Revision as of 07:28, 24 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