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75 lines
2.9 KiB
Scheme
75 lines
2.9 KiB
Scheme
(define-library (scheme-file-type)
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(export scheme-file-type
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main)
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(import (scheme base)
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(srfi 1)
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(srfi 13)
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(srfi 193))
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(begin
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(define rest cdr)
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(define primary-extension-map
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'((".import.scm" "Chicken" "Scheme" "import" "library")
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(".sld" "Scheme" "R7RS" "library" "source" "text")
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(".sls" "Scheme" "R6RS" "library" "source" "text")
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(".sps" "Scheme" "R6RS" "program" "source" "text")
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(".sc" "Scheme" "source" "text")
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(".sch" "Scheme" "source" "text")
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(".scm" "Scheme" "source" "text")
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(".scheme" "Scheme" "source" "text")))
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(define secondary-extension-map
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'((".chezscheme" "Chez")
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(".guile" "Guile")
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(".ikarus" "ikarus")
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(".ironscheme" "IronScheme")
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(".larceny" "Larceny")
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(".loko" "Loko")
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(".mzscheme" "MzScheme")
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(".sagittarius" "Sagittarius")
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(".vicare" "Vicare")
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(".ypsilon" "Ypsilon")))
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(define shebang-map
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'(("chibi-scheme" "Chibi-Scheme")
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("gosh" "Gauche")
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("petite" "Petite Chez")
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("sash" "Sagittarius")))
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(define (scheme-file-type filename)
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(let ((primary-entry (find (lambda (entry)
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(string-suffix-ci? (first entry) filename))
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primary-extension-map)))
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(and primary-entry
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(let* ((primary-ext (first primary-entry))
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(primary-type (rest primary-entry))
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(without-primary-ext (string-drop-right
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filename
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(string-length primary-ext)))
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(secondary-entry (find (lambda (entry)
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(string-suffix-ci? (first entry)
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without-primary-ext))
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secondary-extension-map))
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(secondary-type (and secondary-entry (rest secondary-entry))))
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(append (or secondary-type '())
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primary-type)))))
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(define max-filename-width 50)
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(define main
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(lambda ignored
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(let* ((filenames (command-args))
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(width (min max-filename-width
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(fold max 0 (map string-length filenames)))))
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(for-each (lambda (filename)
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(let ((gap (max 0 (- width (string-length filename))))
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(type (or (scheme-file-type filename)
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'("unknown"))))
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(write-string filename)
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(write-string ": ")
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(write-string (make-string gap #\space))
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(write-string (string-join type " "))
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(newline)))
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filenames))))))
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