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42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* Routines for dealing with '\0' separated arg vectors.
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Copyright (C) 1995-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Written by Miles Bader <miles@gnu.org>
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <argz.h>
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#include <string.h>
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#include <stdlib.h>
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/* Delete ENTRY from ARGZ & ARGZ_LEN, if any. */
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void
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argz_delete (char **argz, size_t *argz_len, char *entry)
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{
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if (entry)
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/* Get rid of the old value for NAME. */
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{
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size_t entry_len = strlen (entry) + 1;
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*argz_len -= entry_len;
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memmove (entry, entry + entry_len, *argz_len - (entry - *argz));
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if (*argz_len == 0)
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{
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free (*argz);
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*argz = 0;
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}
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}
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}
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libc_hidden_def (argz_delete)
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