webmcp
view framework/env/encode/html.lua @ 495:7eec5b604b00
Provide custom implementation of table.insert for Lua 5.2
| author | jbe |
|---|---|
| date | Fri Jun 30 17:01:04 2017 +0200 (2017-06-30) |
| parents | 9fdfb27f8e67 |
| children |
line source
1 --[[--
2 result = -- encoded string
3 encode.html(
4 str -- original string
5 )
7 This function replaces the special characters '<', '>', '&' and '"' by their HTML entities '<', '&rt;', '&' and '"'.
9 NOTE: ACCELERATED FUNCTION
10 Do not change unless also you also update webmcp_accelerator.c
12 --]]--
14 function encode.html(text)
15 -- TODO: perhaps filter evil control characters?
16 return (
17 string.gsub(
18 text, '[<>&"]',
19 function(char)
20 if char == '<' then
21 return "<"
22 elseif char == '>' then
23 return ">"
24 elseif char == '&' then
25 return "&"
26 elseif char == '"' then
27 return """
28 end
29 end
30 )
31 )
32 end