mirror of
https://github.com/jart/cosmopolitan.git
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48 lines
2.7 KiB
C
48 lines
2.7 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 2022 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/bits/bits.h"
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#include "libc/log/rop.h"
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#include "libc/stdio/append.internal.h"
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#include "libc/str/str.h"
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#include "third_party/lua/cosmo.h"
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#include "third_party/lua/lua.h"
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int EscapeLuaString(char *s, size_t len, char **buf) {
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int rc;
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size_t i;
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RETURN_ON_ERROR(appendw(buf, '"'));
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for (i = 0; i < len; i++) {
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if (s[i] == '\n') {
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RETURN_ON_ERROR(appendw(buf, '\\' | 'n' << 8));
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} else if (s[i] == '\\' || s[i] == '\'' || s[i] == '\"') {
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RETURN_ON_ERROR(appendw(buf, '\\' | s[i] << 8));
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} else if (' ' <= s[i] && s[i] <= 0x7e) {
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RETURN_ON_ERROR(appendw(buf, s[i]));
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} else {
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RETURN_ON_ERROR(
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appendw(buf, '\\' | 'x' << 010 |
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"0123456789abcdef"[(s[i] & 0xF0) >> 4] << 020 |
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"0123456789abcdef"[(s[i] & 0x0F) >> 0] << 030));
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}
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}
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RETURN_ON_ERROR(appendw(buf, '"'));
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return 0;
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OnError:
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return -1;
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}
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