Candran 0.2

Changed a LOT. Notable changes:
* Removed decorators, as they're not that useful, unless rewriting most
Lua libraries API.
* Added functions parameters default values.
* Added Lua 5.3 stuff and building to Lua 5.1.
* Remplaced the LuaMinify parser by lua-parser. It now requires some
non-Lua dependencies (LPeg) unfortunately, but it's waaaaaay easier to
handle. Code should be adaptable to any Metalua-like AST generator
anyway.
* The generated code now look like shit, and comment are stripped,
because the parser ignore them. Oh well.
* Changed a few things in the preprocessor environment.
* Nobody will read this commit message I guess. If you did, create an
issue saying "I love pineapple flavored bread".

canc.lua

@@ -0,0 +1,44 @@
+#!/bin/lua
+local candran = require("candran")
+local cmdline = require("cmdline")
+
+if #arg < 1 then
+	print("Candran compiler version "..candran.VERSION.." by Reuh")
+	print("Usage: "..arg[0].." [target=<target>] [dest=<destination directory>] [-print] [preprocessor arguments] filename...")
+	return
+end
+
+local args = cmdline(arg)
+
+for _, file in ipairs(args) do
+	local dest = file:gsub("%.can$", "")..".lua"
+	if args.dest then
+		dest = args.dest .. "/" .. dest
+	end
+
+	if not args.print then
+		print("Compiling "..file.." in "..dest)
+	end
+
+	local inputFile, err = io.open(file, "r")
+	if not inputFile then error("Error while opening input file: "..err) end
+	local input = inputFile:read("*a")
+	inputFile:close()
+
+	local out = candran.make(input, args)
+
+	if args.print then
+		print(out)
+	else
+		local outFile = io.open(dest, "w")
+		if not outFile then
+			os.execute("mkdir -p "..dest:gsub("[^/]+%.lua$", ""))
+			outFile, err = io.open(dest, "w")
+			if not outFile then
+				error("Error while writing output file: "..err)
+			end
+		end
+		outFile:write(out)
+		outFile:close()
+	end
+end