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opus/sys/apps/trace.lua
2017-05-20 18:27:26 -04:00

53 lines
1.3 KiB
Lua

local args = {...}
if not args[1] then
print("Usage:")
print(shell.getRunningProgram() .. " <program> [program arguments, ...]")
return
end
local path = shell.resolveProgram(args[1]) or shell.resolve(args[1])
-- here be dragons
if fs.exists(path) then
local eshell = setmetatable({getRunningProgram=function() return path end}, {__index = shell})
local env = setmetatable({shell=eshell}, {__index=_ENV})
local f = fs.open(path, "r")
local d = f.readAll()
f.close()
local func, e = load(d, fs.getName(path), nil, env)
if not func then
printError("Syntax error:")
printError(" " .. e)
else
table.remove(args, 1)
xpcall(function() func(unpack(args)) end, function(err)
local trace = {}
local i, hitEnd, _, e = 4, false
repeat
_, e = pcall(function() error("<tracemarker>", i) end)
i = i + 1
if e == "xpcall: <tracemarker>" then
hitEnd = true
break
end
table.insert(trace, e)
until i > 10
table.remove(trace)
if err:match("^" .. trace[1]:match("^(.-:%d+)")) then table.remove(trace, 1) end
printError("\nProgram has crashed! Stack trace:")
printError(err)
for i, v in ipairs(trace) do
printError(" at " .. v:match("^(.-:%d+)"))
end
if not hitEnd then
printError(" ...")
end
end)
end
else
printError("program not found")
end