1 | -- resty-gitweb@utils/utils.lua |
2 | -- Basic utilities/resources for git HTTP site implementation |
3 |
|
4 | -- Copyright (c) 2020 Joshua 'joshuas3' Stockin |
5 | -- <https://git.joshstock.in/resty-gitweb> |
6 | -- This software is licensed under the MIT License. |
7 |
|
8 | local _M = {} |
9 |
|
10 | string.split = function(str, delimiter) |
11 | local t = {} |
12 | if not str or str == "" then |
13 | return t |
14 | end |
15 | if delimiter == "" then -- string to table |
16 | string.gsub(str, ".", function(c) table.insert(t, c) end) |
17 | return t |
18 | end |
19 | delimiter = delimiter or "%s" |
20 | local str_len = string.len(str) |
21 | local ptr = 1 |
22 | while true do |
23 | local sub = string.sub(str, ptr, str_len) |
24 | local pre, after = string.find(sub, delimiter) |
25 | if pre then -- delimiter found |
26 | table.insert(t, string.sub(str, ptr, ptr + (pre - 2))) |
27 | ptr = ptr + after |
28 | else -- delimiter not found |
29 | table.insert(t, string.sub(str, ptr, str_len)) |
30 | break |
31 | end |
32 | end |
33 | return t |
34 | end |
35 |
|
36 |
|
37 | string.trim = function(str) |
38 | return str:match('^()%s*$') and '' or str:match('^%s*(.*%S)') |
39 | end |
40 |
|
41 |
|
42 | _M.process = function(command) |
43 | local output |
44 | local status, err = pcall(function() |
45 | local process = io.popen(command, "r") |
46 | assert(process, "Error opening process ('"..command.."').") |
47 | output = process:read("*a") |
48 | process:close() |
49 | end) |
50 | if status then |
51 | return output |
52 | else |
53 | return string.format("Error in call: %s", err or command) |
54 | end |
55 | end |
56 |
|
57 | _M.markdown = function(input) |
58 | local tmpfile = os.tmpname() |
59 | local fp = io.open(tmpfile, "w") |
60 | fp:write(input) |
61 | fp:close() |
62 | local stdout = _M.process("md2html --github "..tmpfile) |
63 | os.remove(tmpfile) |
64 | return stdout |
65 | end |
66 |
|
67 | _M.highlight = function(input, file_name) |
68 | local t = os.tmpname() |
69 | io.open(t,"w"):close() |
70 | os.remove(t) |
71 | local tmpfile = t..file_name |
72 | local fp = io.open(tmpfile, "w") |
73 | fp:write(input) |
74 | fp:close() |
75 | local stdout = _M.process("highlight --stdout -f --failsafe --inline-css "..tmpfile) |
76 | os.remove(tmpfile) |
77 | return stdout |
78 | end |
79 |
|
80 | _M.html_sanitize = function(str) |
81 | local sanitized = tostring(str):gsub("&", "&") |
82 | :gsub("<", "<") |
83 | :gsub(">", ">") |
84 | :gsub("\"", """) |
85 | :gsub("'", "'") |
86 | return sanitized |
87 | end |
88 |
|
89 | _M.iso8601 = function(iso8601) |
90 | iso8601 = iso8601 or "0000-00-00T00:00:00GMT-5:00" |
91 | local y,mo,d,h,mi,s = iso8601:match("(%d%d%d%d)-(%d%d)-(%d%d)T(%d%d):(%d%d):(%d%d)") |
92 | local luatime = os.time{year=y,month=mo,day=d,hour=h,min=mi,sec=s} |
93 | return os.date("%d %b %Y %H:%M", luatime) |
94 | end |
95 |
|
96 | _M.print_table = function(t, l) -- for debugging |
97 | l = l or 0 |
98 | local n = false |
99 | for i,v in pairs(t) do n = true break end |
100 | if n then |
101 | ngx.print("{\n") |
102 | for i,v in pairs(t) do |
103 | for i=0,l do ngx.print(" ") end |
104 | ngx.print("<span style='color:red'>",i,"</span>: ") |
105 | if type(v) ~= "table" then |
106 | if type(v) == "string" then |
107 | ngx.print("\"") |
108 | local s = v:gsub("&", "&"):gsub("<","<"):gsub(">",">"):gsub("\"","\\"") |
109 | ngx.print(s) |
110 | ngx.print("\"") |
111 | else |
112 | ngx.print(v) |
113 | end |
114 | else |
115 | _M.print_table(v,l+1) |
116 | end |
117 | ngx.print("\n") |
118 | end |
119 | for i=0,l-1 do ngx.print(" ") end |
120 | ngx.print("}") |
121 | else |
122 | ngx.print("{}") |
123 | end |
124 | end |
125 |
|
126 | return _M |
127 |
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