67 lines
1.6 KiB
Scheme
67 lines
1.6 KiB
Scheme
(import (picrin base))
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(define (with-output-to-string thunk)
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(let ((port (open-output-string)))
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(parameterize ((current-output-port port))
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(thunk)
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(let ((s (get-output-string port)))
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(close-port port)
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s))))
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(define exprs
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(let loop ((acc '()))
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(let ((e (read)))
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(if (eof-object? e)
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(reverse acc)
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(loop (cons e acc))))))
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(define text
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(with-output-to-string
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(lambda ()
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(for-each
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(lambda (e)
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(write e)
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(write-string " "))
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exprs))))
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(define (escape-string s)
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(with-output-to-string
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(lambda ()
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(string-for-each
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(lambda (c)
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(case c
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((#\\) (write-string "\\\\"))
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((#\") (write-string "\\\""))
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((#\newline) (write-string "\\n"))
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(else (write-char c))))
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s))))
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(define (group-string i s)
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(let loop ((t s) (n (string-length s)) (acc '()))
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(if (= n 0)
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(reverse acc)
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(if (< n i)
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(loop "" 0 (cons t acc))
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(loop (string-copy t i) (- n i) (cons (string-copy t 0 i) acc))))))
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(define lines (map escape-string (group-string 80 text)))
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(for-each
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(lambda (s) (display s) (newline))
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`("#include \"picrin.h\""
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"#include \"picrin/extra.h\""
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""
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"static const char boot_rom[][80] = {"
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,@(let loop ((lines lines) (acc '()))
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(if (null? lines)
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(reverse acc)
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(loop (cdr lines) (cons (string-append "\"" (car lines) "\",") acc))))
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"};"
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""
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"void"
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"pic_boot(pic_state *pic)"
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"{"
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" pic_load_cstr(pic, &boot_rom[0][0]);"
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"}"))
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