2020-06-15 14:18:57 +00:00
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/*-*- 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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2020-12-28 01:18:44 +00:00
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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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2020-06-15 14:18:57 +00:00
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│ │
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2020-12-28 01:18:44 +00:00
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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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2020-06-15 14:18:57 +00:00
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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/**
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* @fileoverview UnBing: Glyphs → Binary.
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*
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* Intended for reassembling modified binaries. Characters that aren't
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* IBM CodePage 437 glyphs are ignored. That includes line feeds, so
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* it's safe to use the fold command on the bing program output, to have
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* something almost representing a source code file. A hack also exists
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* for comments in such files: 𝘶𝘴𝘦 𝑛𝑜𝑛-𝑎𝑠𝑐𝑖𝑖 𝗹𝗲𝘁𝘁𝗲𝗿𝗶𝗻𝗴 𝔞𝔩𝔱𝔢𝔯𝔫𝔞𝔱𝔦𝔳𝔢𝔰.
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*
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* bash$ o/tool/viz/bing.com </bin/sh | o/tool/viz/fold.com >sh.txt
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* bash$ emacs sh.txt
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* bash$ o/tool/viz/unbing.com <sh.txt >sh
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* bash$ chmod +x sh
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* bash$ ./sh
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*
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* That's how it works.
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*/
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uint16_t g_map[0x10000];
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int main(int argc, char *argv[argc]) {
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size_t i;
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wint_t c;
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for (i = 0; i < 256; ++i) {
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g_map[kCp437[i]] = i + 1;
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}
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while ((c = fgetwc(stdin)) != WEOF) {
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if (c == (c & 0xffff) && g_map[c]) {
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fputc(g_map[c] - 1, stdout);
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}
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}
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return 0;
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}
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