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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 scriptfile = "premake4.lua"
local shorthelp = "Type 'premake4 --help' for help"
local versionhelp = "premake4 (Premake Build Script Generator) %s"
--
-- Fire a particular action. Generates the output files from the templates
-- listed in the action descriptor, and calls any registered handler functions.
--
local function doaction(name)
local action = premake.actions[name]
-- walk the session objects and generate files from the templates
local function generatefiles(this, templates)
if (not templates) then return end
for _,tmpl in ipairs(templates) do
local output = true
if (tmpl[3]) then
output = tmpl[3](this)
end
if (output) then
local fname = premake.getoutputname(this, tmpl[1])
local f, err = io.open(fname, "wb")
if (not f) then
error(err, 0)
end
io.output(f)
-- call the template function to generate the output
tmpl[2](this)
io.output():close()
end
end
end
for _,sln in ipairs(_SOLUTIONS) do
generatefiles(sln, action.solutiontemplates)
for prj in premake.eachproject(sln) do
generatefiles(prj, action.projecttemplates)
end
end
if (action.execute) then
action.execute()
end
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
local scripts, templates, actions = dofile(scriptpath .. "/_manifest.lua")
-- core code first
for _,v in ipairs(scripts) do
dofile(scriptpath .. "/" .. v)
end
-- then the templates
for _,v in ipairs(templates) do
local name = path.getbasename(v)
_TEMPLATES[name] = premake.loadtemplatefile(scriptpath .. "/" .. v)
end
-- finally the actions
for _,v in ipairs(actions) 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
if (_OPTIONS["version"]) then
printf(versionhelp, _PREMAKE_VERSION)
return 1
end
if (_OPTIONS["help"]) then
premake.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
-- Validate the command-line arguments. This has to happen after the
-- script has run to allow for project-specific options
if (not premake.actions[_ACTION]) then
error("Error: no such action '".._ACTION.."'", 0)
end
ok, err = premake.checkoptions()
if (not ok) then error("Error: " .. err, 0) end
-- Sanity check the current project setup
ok, err = premake.checktools()
if (not ok) then error("Error: " .. err, 0) end
-- work-in-progress: build the configurations
print("Building configurations...")
premake.buildconfigs()
ok, err = premake.checkprojects()
if (not ok) then error("Error: " .. err, 0) end
-- Hand over control to the action
printf("Running action '%s'...", _ACTION)
doaction(_ACTION)
print("Done.")
return 0
end
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