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#!/usr/bin/env luajit
loadstring = loadstring or load -- for lua 5.2 compat
-- Tracekback (error printout)
local function traceback(message)
local tp = type(message)
if tp ~= "string" and tp ~= "number" then return message end
local debug = _G.debug
if type(debug) ~= "table" then return message end
local tb = debug.traceback
if type(tb) ~= "function" then return message end
return tb(message)
end
-- help
local help = [==[
Usage: th [options] [script.lua [arguments]]
Options:
-l name load library name
-e statement execute statement
-h,--help print this help
-a,--async preload async (libuv) and start async repl (BETA)
-g,--globals monitor global variables (print a warning on creation/access)
-gg,--gglobals monitor global variables (throw an error on creation/access)
-x,--gfx start gfx server and load gfx env
-i,--interactive enter the REPL after executing a script ]==]
-- parse arguments
local asyncrepl,run,interactive,progargs,statement,lib,globs,sglobs,lgfx,_
local parg = arg
local nextarg
for _,arg in ipairs(parg) do
-- nextarg set?
if nextarg == 'exec' then
statement = arg
nextarg = nil
elseif nextarg == 'lib' then
lib = arg
nextarg = nil
elseif not progargs then
_,_,lib = arg:find('^%-l(.*)')
if lib == '' then lib = nil end
end
-- load libraries
if lib then
local ok, err = xpcall(function() require(lib) end, traceback)
if not ok then
print('could not load ' .. lib .. ', skipping')
print(err)
end
elseif progargs then
-- program args
table.insert(progargs,arg)
elseif not statement then
-- option?
local _,_,option = arg:find('^%-%-(.*)')
local shortopt
if not option then
_,_,shortopt = arg:find('^%-(.*)')
end
if option or shortopt then
-- help
if shortopt == 'h' or option == 'help' then
print(help)
return
elseif shortopt == 'i' or option == 'interactive' then
interactive = true
elseif shortopt == 'e' then
nextarg = 'exec'
elseif shortopt == 'a' or option == 'async' then
asyncrepl = true
interactive = true
async = require 'async'
elseif shortopt == 'g' or option == 'globals' then
globs = true
elseif shortopt == 'gg' or option == 'gglobals' then
sglobs = true
elseif shortopt == 'x' or option == 'gfx' then
lgfx = true
elseif shortopt == 'l' then
nextarg = 'lib'
else
-- unknown
print('Error: unrecognized flag --' .. (option ~= nil and option or shortopt))
print(help)
return
end
else
-- exec program
run = arg
progargs = {}
for k,v in pairs(parg) do
if k <= 0 then
progargs[k] = v
end
end
end
end
end
-- load repl
local repl = require 'trepl'
local col = require 'trepl.colorize'
-- load startup file
if os.getenv('TREPLSTARTUP') and not (interactive or statement) then
dofile(os.getenv('TREPLSTARTUP'))
end
-- load gfx env?
if lgfx then
local ok = pcall(require, 'gfx.js')
if ok then
gfx.startserver()
gfx.clear()
gfx.show()
sys.sleep(1)
else
print('could not load gfx.js, please install with: luarocks install gfx.js')
end
end
-- monitor globals
if globs then
monitor_G()
elseif sglobs then
monitor_G(true)
end
-- statement
if statement then
-- exec statement:
local s = loadstring(statement)
local ok,res = pcall(s)
if not ok then
print(res)
return
end
-- quit by default
if not interactive then return end
end
-- run program
if run then
-- set prog args:
arg = progargs
-- run
dofile(run)
-- quit by default
if not interactive then return end
end
-- start repl
if asyncrepl then
-- verbose
print(
[[
______ __ ]]..col.Black[[| Torch7]]..[[
/_ __/__ ________/ / ]]..col.Black[[| ]]..col.magenta[[Scientific computing for Lua.]]..[[
/ / / _ \/ __/ __/ _ \ ]]..col.Black[[| Type ? for help]]..[[
/_/ \___/_/ \__/_//_/ ]]..col.Black[[| ]]..col.blue[[https://github.com/torch]]..[[
]]..col.Black[[| ]]..col.blue[[http://torch.ch]]..[[
]] .. col.red('WARNING: ') .. col.Black('you are running an experimental asynchronous interpreter for Torch.') .. [[
]] .. col.Black('Note 1: It has no support for readline/completion yet.') .. [[
]] .. col.Black('Note 2: The event-loop has been started in the background: ') .. col.none('async.go()') .. [[
]] .. col.Black(' Statements like ') .. col.none('async.setInterval(1000, function() print("test") end)') .. [[
]] .. col.Black(' are run asynchronously to the interpreter. ') .. [[
]] .. col.Black('Note 3: See ') .. col.blue('http://github.com/clementfarabet/async') .. col.Black(' for help' ) .. [[
]]
)
-- BETA: async repl
async.repl()
async.go()
else
-- verbose
print(
[[
______ __ ]]..col.Black[[| Torch7]]..[[
/_ __/__ ________/ / ]]..col.Black[[| ]]..col.magenta[[Scientific computing for Lua.]]..[[
/ / / _ \/ __/ __/ _ \ ]]..col.Black[[| Type ? for help]]..[[
/_/ \___/_/ \__/_//_/ ]]..col.Black[[| ]]..col.blue[[https://github.com/torch]]..[[
]]..col.Black[[| ]]..col.blue[[http://torch.ch]]..[[
]]
)
-- globs?
if globs then
print(
col.red('WARNING: ') .. col.Black('global monitoring is on.\n') ..
col.Black('This is typically not a good idea when running a live interpreter.\n')
)
end
-- regular repl
repl()
end
|
