48 lines
2.7 KiB
C
48 lines
2.7 KiB
C
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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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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/assert.h"
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#include "libc/escape/escape.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/runtime.h"
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/**
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* Internal function aspecting escaping ops with allocating behavior.
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* @see aescapesh(), aescapec()
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*/
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int aescape(char **escaped, size_t size, const char *unescaped, unsigned length,
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int impl(char *escaped, unsigned size, const char *unescaped,
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unsigned length)) {
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int wrote;
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char *p2;
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if ((p2 = realloc(*escaped, size)) != NULL) {
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*escaped = p2;
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if ((wrote = impl(*escaped, size, unescaped, length)) != -1) {
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if ((unsigned)wrote <= size - 1) {
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return wrote;
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} else {
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assert(__builtin_return_address(0) != aescape);
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return aescape(escaped, wrote + 1, unescaped, length, impl);
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}
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}
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}
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free_s(escaped);
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return -1;
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}
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