webmcp

view framework/env/param/_get_parser.lua @ 567:5e3ebe9fd0ce

Added tag v2.2.1 for changeset 3b71fdb3a00d
author jbe
date Wed Apr 28 13:07:52 2021 +0200 (3 months ago)
parents 9fdfb27f8e67
children
line source
1 function param._get_parser(format_info, param_type)
2 if format_info == nil or format_info == "" then
3 return function(str)
4 return param_type:load(str)
5 end
6 else
7 local format_options = {}
8 local format_type, rest = string.match(
9 format_info,
10 "^([A-Za-z][A-Za-z0-9_]*)(.*)$"
11 )
12 if format_type then
13 rest = string.gsub(rest, "\\\\", "\\e")
14 rest = string.gsub(rest, "\\'", "\\q")
15 if
16 string.find(rest, "\\$") or
17 string.find(rest, "\\[^eq]")
18 then
19 format_type = nil
20 else
21 while rest ~= "" do
22 local key, value, new_rest
23 key, value, new_rest = string.match(
24 rest,
25 "^-([A-Za-z][A-Za-z0-9_]*)-'([^']*)'(.*)$"
26 )
27 if value then
28 value = string.gsub(value, "\\q", "'")
29 value = string.gsub(value, "\\e", "\\")
30 format_options[key] = value
31 else
32 key, value, new_rest = string.match(
33 rest,
34 "^-([A-Za-z][A-Za-z0-9_]*)-([^-]*)(.*)$"
35 )
36 if value then
37 if string.find(value, "^[0-9.Ee+-]+$") then
38 local num = tonumber(value)
39 if not num then
40 format_type = nil
41 break
42 end
43 format_options[key] = num
44 elseif value == "t" then
45 format_options[key] = true
46 elseif value == "f" then
47 format_options[key] = false
48 else
49 format_type = nil
50 break
51 end
52 else
53 format_type = nil
54 break
55 end
56 end
57 rest = new_rest
58 end
59 end
60 end
61 if not format_type then
62 error("Illegal format string in GET/POST parameters found.")
63 end
64 local parse_func = parse[format_type]
65 if not parse_func then
66 error("Unknown format identifier in GET/POST parameters encountered.")
67 end
68 return function(str)
69 return parse_func(str, param_type, format_options)
70 end
71 end
72 end

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