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28 lines
1.1 KiB
Racket
28 lines
1.1 KiB
Racket
#lang fontkit/racket
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(require xenomorph)
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(provide (all-defined-out))
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#|
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approximates
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https://github.com/mbutterick/fontkit/blob/master/src/tables/prep.js
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|#
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(define-subclass Struct (Rprep))
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(define prep (make-object Rprep
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(dictify
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'controlValueProgram (+Array uint8))))
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(test-module
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(define ip (open-input-file charter-path))
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(define dir (deserialize (read (open-input-file charter-directory-path))))
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(define offset (· dir tables prep offset))
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(define len (· dir tables prep length))
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(check-equal? offset 4512)
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(check-equal? len 78)
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(set-port-position! ip 0)
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(define table-bytes #"\270\0\0+\0\272\0\1\0\1\0\2+\1\272\0\2\0\1\0\2+\1\277\0\2\0C\0007\0+\0\37\0\23\0\0\0\b+\0\277\0\1\0\200\0i\0R\0;\0#\0\0\0\b+\0\272\0\3\0\5\0\a+\270\0\0 E}i\30D")
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(check-equal? table-bytes (peek-bytes len offset ip))
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(define ds (open-input-bytes (peek-bytes len offset ip)))
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(check-equal? (dict-ref (decode prep ds) 'controlValueProgram) '(184 0 0 43 0 186 0 1 0 1 0 2 43 1 186 0 2 0 1 0 2 43 1 191 0 2 0 67 0 55 0 43 0 31 0 19 0 0 0 8 43 0 191 0 1 0 128 0 105 0 82 0 59 0 35 0 0 0 8 43 0 186 0 3 0 5 0 7 43 184 0 0 32 69 125 105 24 68)))
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