40 lines
1.2 KiB
Scheme
40 lines
1.2 KiB
Scheme
(import (chicken condition)
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(chicken io)
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(chicken process-context)
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(chicken random)
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(chicken format))
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(define *api-url* (get-environment-variable "MASTODON_API_URL"))
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(define *access-token* (get-environment-variable "MASTODON_ACCESS_TOKEN"))
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(define file "./words.txt")
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(define (file-num-lines file-path)
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(let ((file (open-input-file file-path)))
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(let loop ((num-lines 0))
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(if (eof-object? (read-line file))
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(begin (close-input-port file)
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num-lines)
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(loop (+ 1 num-lines))))))
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(define (file-line-at file-path n)
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(let ((file (open-input-file file-path)))
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(let loop ((m 0)
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(cur (read-line file)))
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(cond
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((= m n)
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(begin
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(close-input-port file)
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cur))
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((eof-object? cur)
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(begin
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(close-input-port file)
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(signal (format "~s is greater than the number of lines in ~s" n file-path))))
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(else (loop (+ 1 m) (read-line file)))))))
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(let* ((n (pseudo-random-integer (file-num-lines file)))
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(line (file-line-at file n)))
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(display "Seize the means of ")
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(display line)
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(display "\n"))
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