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Last change
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gnu grep version 2.12 (grep-2.12.tar.xz, md5sum=8d2f0346d08b13c18afb81f0e8aa1e2f)
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| 1 | /* Find the length of STRING, but scan at most MAXLEN characters.
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| 2 | Copyright (C) 2005-2007, 2009-2012 Free Software Foundation, Inc.
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| 3 | Written by Simon Josefsson.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 3, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | #include <config.h>
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| 19 |
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| 20 | #include <string.h>
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| 21 |
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| 22 | /* Find the length of STRING, but scan at most MAXLEN characters.
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| 23 | If no '\0' terminator is found in that many characters, return MAXLEN. */
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| 24 |
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| 25 | size_t
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| 26 | strnlen (const char *string, size_t maxlen)
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| 27 | {
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| 28 | const char *end = memchr (string, '\0', maxlen);
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| 29 | return end ? (size_t) (end - string) : maxlen;
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| 30 | }
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