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--
-- _premake_main.lua
-- Script-side entry point for the main program logic.
-- Copyright (c) 2002-2008 Jason Perkins and the Premake project
--
local shorthelp = "Type 'premake4 --help' for help"
local versionhelp = "premake4 (Premake Build Script Generator) %s"
local scriptfile = "premake4.lua"
--
-- Display the help text
--
local function showhelp()
actions = { }
for name,_ in pairs(premake.actions) do table.insert(actions, name) end
table.sort(actions)
printf("Premake %s, a build script generator", _PREMAKE_VERSION)
printf(_PREMAKE_COPYRIGHT)
printf("%s %s", _VERSION, _COPYRIGHT)
printf("")
printf("Usage: premake4 [options] action [arguments]")
printf("")
printf("ACTIONS")
printf("")
for _,name in ipairs(actions) do
printf(" %-17s %s", name, premake.actions[name].description)
end
printf("")
printf("OPTIONS")
printf("")
printf(" --file=name Process the specified Premake script file")
printf(" --help Display this information")
printf(" --scripts=path Search for additional scripts on the given path")
printf(" --version Display version information")
printf("")
printf("For additional information, see http://industriousone.com/premake")
end
--
-- Script-side program entry point.
--
function _premake_main(scriptpath)
-- if running off the disk (in debug mode), load everything
-- listed in _manifest.lua; the list divisions make sure
-- everything gets initialized in the proper order.
if (scriptpath) then
-- core code first
local s, t, a = dofile(scriptpath .. "/_manifest.lua")
for i = 1, #s - 1 do
dofile(scriptpath.."/"..s[i])
end
-- then the templates
for _,v in ipairs(t) do
local n = path.getbasename(v)
_TEMPLATES[n] = premake.template.loadfile(scriptpath.."/"..v)
end
-- finally the actions
for _,v in ipairs(a) do
dofile(scriptpath.."/"..v)
end
end
-- If there is a project script available, run it to get the
-- project information, available options and actions, etc.
local fname = _OPTIONS["file"] or scriptfile
if (os.isfile(fname)) then
dofile(fname)
end
-- Process special options like /version and /help
if (_OPTIONS["version"]) then
printf(versionhelp, _PREMAKE_VERSION)
return 1
end
if (_OPTIONS["help"]) then
showhelp()
return 1
end
-- If no action was specified, show a short help message
if (not _ACTION) then
print(shorthelp)
return 1
end
-- If there wasn't a project script I've got to bail now
if (not os.isfile(fname)) then
error("No Premake script ("..scriptfile..") found!", 2)
end
-- Prep the session, and then hand off control to the action
local action = premake.actions[name]
if (not premake.actions[_ACTION]) then
error("Error: No such action '".._ACTION.."'", 0)
end
ok, err = premake.checktools()
if (not ok) then error("Error: " .. err, 0) end
ok, err = premake.project.checkall()
if (not ok) then error("Error: " .. err, 0) end
premake.doaction(_ACTION)
return 0
end
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