mirror of
https://github.com/jart/cosmopolitan.git
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61 lines
3.4 KiB
C
61 lines
3.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/fmt/bing.internal.h"
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#include "libc/str/str.h"
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/**
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* Turns binary octet into unicode glyph representation.
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*
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* Cosmopolitan displays RADIX-256 numbers using these digits:
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*
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* 0123456789abcdef
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* 0 ☺☻♥♦♣♠•◘○◙♂♀♪♫☼
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* 1►◄↕‼¶§▬↨↑↓→←∟↔▲▼
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* 2 !"#$%&'()*+,-./
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* 30123456789:;<=>?
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* 4@ABCDEFGHIJKLMNO
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* 5PQRSTUVWXYZ[\]^_
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* 6`abcdefghijklmno
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* 7pqrstuvwxyz{|}~⌂
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* 8ÇüéâäàåçêëèïîìÄÅ
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* 9ÉæÆôöòûùÿÖÜ¢£¥€ƒ
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* aáíóúñѪº¿⌐¬½¼¡«»
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* b░▒▓│┤╡╢╖╕╣║╗╝╜╛┐
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* c└┴┬├─┼╞╟╚╔╩╦╠═╬╧
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* d╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀
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* eαßΓπΣσμτΦΘΩδ∞φε∩
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* f≡±≥≤⌠⌡÷≈°∙·√ⁿ²■λ
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*
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* IBM designed these glyphs for the PC to map onto the display bytes at
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* (char *)0xb8000. Because IBM authorized buyers of its PCs to inspect
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* and/or modify this region of memory, it became widely understood by
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* many developers as a quick way to visualize arbitrary data that's so
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* superior to hexdump -- a use-case that's lived on longer than the CGA
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* graphics card for which it was designed.
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*
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* @param b is binary octet to pictorally represent
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* @param intent controls canonical multimappings: ∅␀ ,\n◙,ε∊∈€, λ,etc.
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* @see unbing() for inverse
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*/
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int bing(int b, int intent) {
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assert(0 <= b && b < 256);
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return kCp437[b & 0xff]; /* TODO(jart): multimappings */
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}
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