1 files changed, 48 insertions, 0 deletions
diff --git a/Data/Libraries/LDoc/ldoc/builtin/utf8.lua b/Data/Libraries/LDoc/ldoc/builtin/utf8.lua
new file mode 100644
index 0000000..ec91c4f
--- /dev/null
+++ b/Data/Libraries/LDoc/ldoc/builtin/utf8.lua
@@ -0,0 +1,48 @@
+--- This library provides basic support for UTF-8 encoding.
+-- @module utf8
+
+local utf8 = {}
+
+---
+-- Receives zero or more integers, converts each one to its corresponding UTF-8 byte sequence and returns
+-- a string with the concatenation of all these sequences.
+function utf8.char (...) end
+
+---
+-- The pattern  "[\0-\x7F\xC2-\xF4][\x80-\xBF]*" , which matches exactly one
+-- UTF-8 byte sequence, assuming that the subject is a valid UTF-8 string.
+-- @field charpattern
+
+---
+-- Iterate over all characters in string.
+--
+--      for p, c in utf8.codes(s) do body end
+--
+-- will iterate over all characters in string s, with p being the position (in bytes) and c the code point
+-- of each character. It raises an error if it meets any invalid byte sequence.
+function utf8.codes (s) end
+
+---
+-- Returns the codepoints (as integers) from all characters in s that start between byte position i and j (both included).
+-- The default for i is 1 and for j is i. It raises an error if it meets any invalid byte sequence.
+function utf8.codepoint (s , i , j) end
+
+---
+-- Returns the number of UTF-8 characters in string s that start between positions i and j (both inclusive).
+-- The default for i is 1 and for j is -1. If it finds any invalid byte sequence, returns a false value plus
+-- the position of the first invalid byte.
+function utf8.len (s , i , j) end
+
+---
+-- Returns the position (in bytes) where the encoding of the n-th character of s (counting from position i) starts.
+-- A negative n gets characters before position i. The default for i is 1 when n is non-negative
+-- and #s + 1 otherwise, so that utf8.offset(s, -n) gets the offset of the n-th character from the end
+-- of the string.
+-- If the specified character is neither in the subject nor right after its end, the function returns nil.
+--
+-- As a special case, when n is 0 the function returns the start of the encoding of the character that contains the i-th byte of s.
+--
+-- This function assumes that s is a valid UTF-8 string.
+function utf8.offset (s, n , i) end
+
+return utf8