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81 lines
2.6 KiB
Scheme
Executable file
81 lines
2.6 KiB
Scheme
Executable file
#!/bin/sh
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# aside from this initial boilerplate, this is actually -*- scheme -*- code
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main='(module-ref (resolve-module '\''(scripts punify)) '\'main')'
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exec ${GUILE-guile} -c "(apply $main (cdr (command-line)))" "$@"
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!#
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;;; punify --- Display Scheme code w/o unnecessary comments / whitespace
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;; Copyright (C) 2001 Free Software Foundation, Inc.
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;;
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2, or
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;; (at your option) any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this software; see the file COPYING. If not, write to
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;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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;; Boston, MA 02111-1307 USA
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;;; Commentary:
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;; Usage: punify FILE1 FILE2 ...
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;;
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;; Each file's forms are read and written to stdout.
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;; The effect is to remove comments and much non-essential whitespace.
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;; This is useful when installing Scheme source to space-limited media.
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;;
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;; Example:
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;; $ wc ./punify ; ./punify ./punify | wc
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;; 81 355 2622 ./punify
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;; 0 34 694
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;;
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;; TODO: Read from stdin.
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;; Handle vectors.
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;; Identifier punification.
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;;
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;; Author: Thien-Thi Nguyen
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;;; Code:
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(define-module (scripts punify)
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:export (punify))
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(define (write-punily form)
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(if (and (list? form) (not (null? form)))
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(let ((first (car form)))
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(display "(")
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(write-punily first)
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(let loop ((ls (cdr form)) (last-was-list? (list? first)))
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(if (null? ls)
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(display ")")
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(let* ((new-first (car ls))
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(this-is-list? (list? new-first)))
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(and (not last-was-list?)
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(not this-is-list?)
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(display " "))
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(write-punily new-first)
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(loop (cdr ls) this-is-list?)))))
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(write form)))
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(define (punify-one file)
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(with-input-from-file file
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(lambda ()
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(let ((toke (lambda () (read (current-input-port)))))
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(let loop ((form (toke)))
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(or (eof-object? form)
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(begin
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(write-punily form)
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(loop (toke)))))))))
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(define (punify . args)
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(for-each punify-one args))
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(define main punify)
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;;; punify ends here
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