forked from osmarks/potatOS
131 lines
2.8 KiB
Lua
131 lines
2.8 KiB
Lua
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--
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-- CommandlineMinify.lua
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--
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-- A command line utility for minifying lua source code using the minifier.
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--
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local util = require'Util'
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local Parser = require'ParseLua'
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local Format_Mini = require'FormatMini'
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local ParseLua = Parser.ParseLua
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local PrintTable = util.PrintTable
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local function splitFilename(name)
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table.foreach(arg, print)
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if name:find(".") then
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local p, ext = name:match("()%.([^%.]*)$")
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if p and ext then
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if #ext == 0 then
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return name, nil
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else
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local filename = name:sub(1,p-1)
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return filename, ext
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end
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else
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return name, nil
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end
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else
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return name, nil
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end
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end
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if #arg == 1 then
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local name, ext = splitFilename(arg[1])
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local outname = name.."_min"
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if ext then outname = outname.."."..ext end
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--
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local inf = io.open(arg[1], 'r')
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if not inf then
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print("Failed to open `"..arg[1].."` for reading")
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return
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end
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--
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local sourceText = inf:read('*all')
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inf:close()
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--
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local st, ast = ParseLua(sourceText)
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if not st then
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--we failed to parse the file, show why
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print(ast)
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return
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end
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--
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local outf = io.open(outname, 'w')
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if not outf then
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print("Failed to open `"..outname.."` for writing")
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return
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end
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--
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outf:write(Format_Mini(ast))
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outf:close()
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--
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print("Minification complete")
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elseif #arg == 3 then
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--keep the user from accidentally overwriting their non-minified file with
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if arg[1]:find("_min") then
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print("Did you mix up the argument order?\n"..
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"Current command will minify `"..arg[1].."` and OVERWRITE `"..arg[2].."` with the results")
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while true do
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io.write("Confirm (yes/cancel): ")
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local msg = io.read('*line')
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if msg == 'yes' then
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break
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elseif msg == 'cancel' then
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return
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end
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end
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end
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local inf = io.open(arg[1], 'r')
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if not inf then
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print("Failed to open `"..arg[1].."` for reading")
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return
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end
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--
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local sourceText = inf:read('*all')
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inf:close()
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--
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local st, ast = ParseLua(sourceText)
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if not st then
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--we failed to parse the file, show why
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print(ast)
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return
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end
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--
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if arg[1] == arg[2] then
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print("Are you SURE you want to overwrite the source file with a minified version?\n"..
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"You will be UNABLE to get the original source back!")
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while true do
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io.write("Confirm (yes/cancel): ")
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local msg = io.read('*line')
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if msg == 'yes' then
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break
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elseif msg == 'cancel' then
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return
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end
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end
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end
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local outf = io.open(arg[2], 'w')
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if not outf then
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print("Failed to open `"..arg[2].."` for writing")
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return
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end
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--
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local text, map = Format_Mini(ast)
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outf:write(text)
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outf:close()
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--
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local outf = io.open(arg[3], 'w')
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if not outf then
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print("Failed to open `"..arg[3].."` for writing")
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return
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end
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outf:write(map)
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outf:close()
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print("Minification complete")
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else
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print("Invalid arguments, Usage:\nLuaMinify source [destination]")
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end
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