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|
--
-- globals.lua
-- Global tables and variables, replacements and extensions to Lua's global functions.
-- Copyright (c) 2002-2008 Jason Perkins and the Premake project
--
-- The list of defined solutions (which contain projects, etc.)
_SOLUTIONS = { }
-- The list of built-in output templates
_TEMPLATES = { }
-- A top-level namespace for support functions
premake = { }
-- The list of registered actions
premake.actions = { }
-- The list of tool interfaces
premake.tools = { }
--
-- A replacement for Lua's built-in dofile() function, this one sets the
-- current working directory to the script's location, enabling script-relative
-- referencing of other files and resources.
--
local builtin_dofile = dofile
function dofile(fname)
-- remember the current working directory; I'll restore it shortly
local oldcwd = os.getcwd()
-- if the file doesn't exist, check the search path
if (not os.isfile(fname)) then
local path = os.pathsearch(fname, _OPTIONS["scripts"], os.getenv("PREMAKE_PATH"))
if (path) then
fname = path.."/"..fname
end
end
-- use the absolute path to the script file, to avoid any file name
-- ambiguity if an error should arise
fname = path.getabsolute(fname)
-- switch the working directory to the new script location
local newcwd = path.getdirectory(fname)
os.chdir(newcwd)
-- run the chunk. How can I catch variable return values?
local a, b, c, d, e, f = builtin_dofile(fname)
-- restore the previous working directory when done
os.chdir(oldcwd)
return a, b, c, d, e, f
end
--
-- A shortcut for including another "premake4.lua" file, often used for projects.
--
function include(fname)
return dofile(fname .. "/premake4.lua")
end
--
-- Open an overload of the io.open() function, which will create any missing
-- subdirectories in the filename if "mode" is set to writeable.
--
local builtin_open = io.open
function io.open(fname, mode)
if (mode) then
if (mode:find("w")) then
local dir = path.getdirectory(fname)
ok, err = os.mkdir(dir)
if (not ok) then
error(err, 0)
end
end
end
return builtin_open(fname, mode)
end
--
-- A shortcut for printing formatted output.
--
function printf(msg, ...)
print(string.format(msg, unpack(arg)))
end
--
-- An extension to type() to identify project object types by reading the
-- "__type" field from the metatable.
--
local builtin_type = type
function type(t)
local mt = getmetatable(t)
if (mt) then
if (mt.__type) then
return mt.__type
end
end
return builtin_type(t)
end
|
