First integration of new Lua-based architecture

1 files changed, 132 insertions, 0 deletions

diff --git a/src/_premake_main.lua b/src/_premake_main.lua
new file mode 100644
index 0000000..2a357d2
--- /dev/null
+++ b/src/_premake_main.lua
@@ -0,0 +1,132 @@
+--
+-- _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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