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66 lines
1.8 KiB
Scheme
66 lines
1.8 KiB
Scheme
(define read-string
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(lambda (ip)
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(unless (eqv? (read-char ip) #\")
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(error 'read-string "no starting double-quote"))
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(list->string
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(let f ()
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(let ([c (read-char ip)])
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(cond
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[(eqv? c #\") '()]
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[(or (eqv? c #\newline) (eof-object? c))
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(error 'read-string "no ending double-quote")]
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[else (cons c (f))]))))))
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(define readrol
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(lambda (ip)
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(let ([c (read-char ip)])
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(if (eq? c #\newline)
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'()
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(cons c (readrol ip))))))
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(define read-line
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(lambda (ip)
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(if (eof-object? (peek-char ip))
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(peek-char ip)
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(let ([x (read-string ip)])
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(cons x (readrol ip))))))
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(define summary-read
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(lambda (ip)
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(do ([ls '() (cons line ls)]
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[line (read-line ip) (read-line ip)])
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((eof-object? line) (reverse! ls)))))
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(define summary-sort
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(lambda (x)
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(sort! (lambda (x y) (string<? (car x) (car y))) x)))
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(define write-list
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(lambda (ls op)
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(unless (null? ls)
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(write-char (car ls) op)
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(write-list (cdr ls) op))))
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(define summary-print
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(lambda (x op)
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(for-each
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(lambda (x) (write-list (cdr x) op) (newline op))
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x)))
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(define summary-make
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(lambda (root)
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(parameterize ((reset-handler abort))
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(let ([ip (open-input-file (format "~a.rfm" root))]
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[op (open-output-file (format "~a.sfm" root) 'replace)])
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(dynamic-wind
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(lambda () #f)
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(lambda ()
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(fprintf op "\\begin{thesummary}~%")
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(summary-print
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(summary-sort (summary-read ip))
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op)
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(fprintf op "\\end{thesummary}~%"))
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(lambda ()
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(close-input-port ip)
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(close-output-port op)))))))
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