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1 /* Find the length of STRING, but scan at most MAXLEN characters. |
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2 Copyright (C) 2005, 2006, 2007, 2009 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 2, 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, write to the Free Software Foundation, |
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17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ |
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18 |
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19 #include <config.h> |
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20 |
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21 #include <string.h> |
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22 |
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23 /* Find the length of STRING, but scan at most MAXLEN characters. |
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24 If no '\0' terminator is found in that many characters, return MAXLEN. */ |
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25 |
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26 size_t |
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27 strnlen (const char *string, size_t maxlen) |
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28 { |
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29 const char *end = memchr (string, '\0', maxlen); |
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30 return end ? (size_t) (end - string) : maxlen; |
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31 } |