Buffer.from() | LuaRT free and open source Windows programming framework for Lua

Buffer:from(var, [encoding]) method

Reinitialize the Buffer with the specified content.

Parameters

var

A variable used to initialize the Buffer. Only number, string and table values are permitted with the following behavior :

number : Initialize the Buffer with the specified size. All bytes are initialized to zero.
string : Initialize the Buffer with the specified string. An optional encoding argument can specify how to interpret the string (see below)
table : Initialize the Buffer with the specified table. The table must contain only sequential byte values (for example { 20, 33, 75 })

encoding

An optional string used to specify the encoding when initializing the Buffer with a string value :

"utf8" : Initialize the Buffer with a UTF8 string encoding, or as raw binary data (default)
"unicode" : Initialize the Buffer with an UNICODE (UCS-2 LE) encoded string
"base64" : Initialize the Buffer with a base64 encoded string
"hex" : Initialize the Buffer with a hexadecimal encoded string

Return value

Returns no value.

Example


-- init a Buffer with one byte
local buff = sys.Buffer(1)

-- update buff content with a string
buff:from("This is a string");
print(buff) --Outputs This is a string