/
repler.lua
91 lines (78 loc) · 2.4 KB
/
repler.lua
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
--[[ LICENSE
-- Following is the MIT license as found on
-- http://www.opensource.org/licenses/mit-license.php .
Copyright (c) 2013 Bart van Strien
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
]]
local function sprint(...)
local args = {...}
for i, v in ipairs(args) do
args[i] = tostring(v)
end
if #args == 0 then
return nil
end
return table.concat(args, "\t")
end
local function doExecute(command)
command = command:gsub("^=", "return ")
local success, f = pcall(loadstring, command)
local results
if success then
results = {pcall(f)}
end
if not success then
return sprint(f)
elseif not table.remove(results, 1) then
return sprint(results[1])
else
return sprint(unpack(results))
end
end
local function load()
local t = love.thread.newThread("repler-thread",
love.filesystem.newFileData(
[[
require "love.event"
function prompt()
io.write("> ")
return io.read("*l")
end
t = love.thread.getThread()
repeat
local command = prompt()
if not command then break end
love.event.push("repler", t, command)
local result = t:demand("result")
if #result > 0 then
print(result:sub(2, -1))
end
until infinity
]],
"replthread"))
love.handlers.repler = rawget(love.handlers, "repler") or function(thread, command)
local result = doExecute(command)
if result == nil then
t:set("result", "")
else
t:set("result", "\"" .. result)
end
end
t:start()
end
return {load = load}