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view framework/env/encode/mime/quoted_printable_text_content.lua @ 232:82cc171e8510
Pass _ENV to loaded chunks
| author | jbe |
|---|---|
| date | Sat Feb 28 23:11:40 2015 +0100 (2015-02-28) |
| parents | 9fdfb27f8e67 |
| children |
line source
1 function encode.mime.quoted_printable_text_content(str)
2 local parts = {}
3 for str_part in string.gmatch(str, "[^\r\n]+[\r\n]*") do
4 local line, extra_gap = string.match(str_part, "^([^\r\n]+)\r?\n?(.*)$")
5 local line_length = 0
6 for char in string.gmatch(line, ".") do
7 if string.find(char, "^[\t -<>-~]$") then
8 if line_length + 1 > 75 then
9 parts[#parts+1] = "=\r\n"
10 line_length = 0
11 end
12 parts[#parts+1] = char
13 line_length = line_length + 1
14 else
15 if line_length + 3 > 75 then
16 parts[#parts+1] = "=\r\n"
17 line_length = 0
18 end
19 parts[#parts+1] = string.format("=%02X", string.byte(char))
20 line_length = line_length + 3
21 end
22 end
23 for i = 1, #extra_gap do
24 if string.sub(extra_gap, i, i) == "\n" then
25 parts[#parts+1] = "\r\n"
26 end
27 end
28 parts[#parts+1] = "\r\n"
29 end
30 return table.concat(parts)
31 end