Module string_lib 

Standard library for string operations and pattern-matching.

Port of lstrlib.c (Lua 5.4.7, 1875 lines, 46 functions).

Sections:

1. Basic string operations (byte, char, find, format, gmatch, gsub, len, lower, match, rep, reverse, sub, upper)
2. Pattern-matching engine (MatchState + recursive matcher)
3. String format (string.format)
4. Pack / unpack (string.pack, string.packsize, string.unpack)
5. Module registration (luaopen_string)

Constants

STRING_LIB

Function table for string library.

STRING_META_METHODS

Metamethods to install on the string metatable.

Functions

arith_add

arith_div

arith_idiv

arith_mod

arith_mul

arith_pow

arith_sub

arith_unm

createmetatable

Create the string metatable and set it as the metatable for all strings.

gmatch

string.gmatch(s, pattern [, init]) — return an iterator for all matches.

gmatch_aux

Continuation function for string.gmatch iterator closure.

luaopen_string

luaopen_string — open the string library.

str_byte

string.byte(s [, i [, j]]) — return numeric codes of characters.

str_char

string.char(...) — return string built from character codes.

str_dump

string.dump(function [, strip]) — serialize a function as binary chunk.

str_find

string.find(s, pattern [, init [, plain]]) — find pattern in s.

str_format

string.format(fmt, ...) — C-style string formatting.

str_gsub

string.gsub(s, pattern, repl [, n]) — global substitution.

str_len

string.len(s) — return byte-length of s.

str_lower

string.lower(s) — return lowercase copy.

str_match

string.match(s, pattern [, init]) — match pattern against s.

str_pack

string.pack(fmt, ...) — pack values into a binary string.

str_packsize

string.packsize(fmt) — return the byte-size the format would produce.

str_rep

string.rep(s, n [, sep]) — return n copies of s separated by sep.

str_reverse

string.reverse(s) — return string with bytes reversed.

str_sub

string.sub(s, i [, j]) — return substring.

str_unpack

string.unpack(fmt, s [, pos]) — unpack binary data from string.

str_upper

string.upper(s) — return uppercase copy.