Class System.UTF8
UTF-8 library class.
Provides UTF-8 aware string functions implemented in pure lua.
All functions behave as their non UTF-8 aware counterparts with the exception that UTF-8 characters are used instead of bytes for all units.
Methods
| System.UTF8:byte (s[, i=1[, j=i]]) | string.byte equivalent for UTF-8 strings. |
| System.UTF8:char (...) | string.char equivalent for UTF-8 strings. |
| System.UTF8:find (s, pattern[, init[, plain]]) | string.find equivalent for UTF-8 strings. |
| System.UTF8:gmatch (s, pattern[, all]) | string.gmatch equivalent for UTF-8 strings. |
| System.UTF8:gsub (s, pattern, repl[, n]) | string.gsub equivalent for UTF-8 strings. |
| System.UTF8:len (s) | string.len equivalent for UTF-8 strings. |
| System.UTF8:match (s, pattern[, init]) | string.match equivalent for UTF-8 strings. |
| System.UTF8:sub (s, i[, j]) | string.sub equivalent for UTF-8 strings. |
| System.UTF8:reverse (s) | string.reverse equivalent for UTF-8 strings. |
| System.UTF8:codes (s) | Returns an iterator which iterate over all characters in string s, with p being the position (in bytes) and c the code point of each character. |
| System.UTF8:gensub (s[, len=1]) | Returns an iterator which returns the next substring and its byte interval. |
| System.UTF8.explode (source, delimiter) | string.explode equivalent for UTF-8 strings. |
Methods
- System.UTF8:byte (s[, i=1[, j=i]])
-
string.byte equivalent for UTF-8 strings.
Parameters:
- s string
- i number (default 1)
- j number (default i)
Returns:
-
...
Char codes in lua number.
- System.UTF8:char (...)
-
string.char equivalent for UTF-8 strings.
Parameters:
- ... UTF-8 code integers.
Returns:
- System.UTF8:find (s, pattern[, init[, plain]])
-
string.find equivalent for UTF-8 strings.
Parameters:
Returns:
-
find result.
- System.UTF8:gmatch (s, pattern[, all])
-
string.gmatch equivalent for UTF-8 strings.
Parameters:
Returns:
-
function
- System.UTF8:gsub (s, pattern, repl[, n])
-
string.gsub equivalent for UTF-8 strings.
Parameters:
Returns:
- System.UTF8:len (s)
-
string.len equivalent for UTF-8 strings.
Parameters:
- s string
Returns:
-
number
- System.UTF8:match (s, pattern[, init])
-
string.match equivalent for UTF-8 strings.
Parameters:
Returns:
-
match result.
- System.UTF8:sub (s, i[, j])
-
string.sub equivalent for UTF-8 strings.
Parameters:
- s string
- i number
- j number (optional)
Returns:
- System.UTF8:reverse (s)
-
string.reverse equivalent for UTF-8 strings.
Parameters:
- s string
Returns:
- System.UTF8:codes (s)
-
Returns an iterator which iterate over all characters in string s,
with p being the position (in bytes) and c the code point of each character.
Parameters:
- s string
Returns:
-
function
Returns variable (p, c).
- System.UTF8:gensub (s[, len=1])
-
Returns an iterator which returns the next substring and its byte interval.
Parameters:
- s string
- len number The string length of each substrings. (default 1)
Returns:
-
function
Returns variable (substring, startPos, endPos).
- System.UTF8.explode (source, delimiter)
-
string.explodeequivalent for UTF-8 strings.Parameters:
Returns:
-
table
The result.