mirror of https://github.com/janet-lang/janet
56 lines
1.4 KiB
Plaintext
56 lines
1.4 KiB
Plaintext
# Copyright 2017-2018 (C) Calvin Rose
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(do
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(var *should-repl* :private false)
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(var *no-file* :private true)
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(var *raw-stdin* :private false)
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# Flag handlers
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(def handlers :private {
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"h" (fn []
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(print "usage: " (get args 0) " [options] scripts...")
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(print "Options are:")
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(print " -h Show this help")
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(print " -v Print the version string")
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(print " -s Use raw stdin instead of getline like functionality")
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(print " -e Execute a string of dst")
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(print " -r Enter the repl after running all scripts")
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(os.exit 0)
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1)
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"v" (fn [] (print VERSION) (os.exit 0) 1)
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"s" (fn [] (:= *raw-stdin* true) (:= *should-repl* true) 1)
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"r" (fn [] (:= *should-repl* true) 1)
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"e" (fn [i]
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(:= *no-file* false)
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(eval (get args (+ i 1)))
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2)
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})
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(defn- dohandler [n i]
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(def h (get handlers n))
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(if h (h i) (print "unknown flag -" n)))
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# Process arguments
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(var i 1)
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(def lenargs (length args))
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(while (< i lenargs)
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(def arg (get args i))
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(if (= "-" (string.slice arg 0 1))
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(+= i (dohandler (string.slice arg 1 2) i))
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(do
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(:= *no-file* false)
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(import arg)
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(++ i))))
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(when (or *should-repl* *no-file*)
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(if *raw-stdin*
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(repl nil identity)
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(do
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(print (string "Dst " VERSION " Copyright (C) 2017-2018 Calvin Rose"))
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(repl (fn [buf p]
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(def prompt (string (parser.state p) "> "))
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(getline prompt buf))))))
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)
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