51 lines
1.6 KiB
Racket
51 lines
1.6 KiB
Racket
#lang racket/base
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(require (prefix-in vector: racket/vector)
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(prefix-in list: racket/list)
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(prefix-in config: "config.rkt")
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(prefix-in init: "init.rkt")
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(prefix-in util: "util.rkt")
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(prefix-in messages: "messages.rkt"))
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(provide (all-defined-out))
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(define (check-args args)
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(let([args-length (vector-length args)])
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(cond
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[(equal? args-length 0)
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(util:display-hash-ref messages:messages 'show-usage)]
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[(and
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(equal? args-length 1)
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(equal? (vector:vector-member config:list-command args) 0))
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(util:show-list)]
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[(and
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(equal? args-length 2)
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(equal? (vector-ref args 0) config:add-command))
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(util:add-item args)]
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[(and
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(equal? args-length 2)
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(equal? (vector:vector-member config:remove-command args) 0)
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;; Don't allow user to remove zeroth item
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(not (equal? (vector:vector-member "0" args) 1))
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;; Number is positive
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(positive? (string->number (vector-ref args 1)))
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;; Don't allow removal of items beyond last item
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(not (> (string->number (vector-ref args 1)) (length (util:file->string-list config:path)))))
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(util:remove-item args)]
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[(and
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(equal? args-length 1)
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(equal? (vector:vector-member config:initialize-command args) 0))
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(init:initialize)]
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[(and
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(equal? args-length 1)
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(member (vector-ref args 0) config:help-command))
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(util:display-hash-ref messages:messages 'show-help)]
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[else
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(util:display-hash-ref messages:messages 'show-usage)])))
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