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annotate lib/unistr/u32-strcspn.c @ 14079:97fc9a21a8fb

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maint: update almost all copyright ranges to include 2011 Run the new "make update-copyright" rule.
author Jim Meyering <meyering@redhat.com>
date Sat, 01 Jan 2011 20:17:23 +0100
parents c2cbabec01dd
children 8250f2777afc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Search for some characters in UTF-32 string.
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2 Copyright (C) 1999, 2002, 2006, 2009-2011 Free Software Foundation, Inc.
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3 Written by Bruno Haible <bruno@clisp.org>, 2002.
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4
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5 This program is free software: you can redistribute it and/or modify it
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6 under the terms of the GNU Lesser General Public License as published
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7 by the Free Software Foundation; either version 3 of the License, or
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8 (at your option) any later version.
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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 GNU
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13 Lesser 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 Lesser General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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18 #include <config.h>
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20 /* Specification. */
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21 #include "unistr.h"
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22
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23 #define FUNC u32_strcspn
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24 #define UNIT uint32_t
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25 #define U_STRLEN u32_strlen
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26 #define U_STRCHR u32_strchr
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28 size_t
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29 FUNC (const UNIT *str, const UNIT *reject)
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30 {
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31 /* Optimize two cases. */
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32 if (reject[0] == 0)
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33 return U_STRLEN (str);
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34 if (reject[1] == 0)
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35 {
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36 ucs4_t uc = reject[0];
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37 const UNIT *ptr = str;
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38 for (; *ptr != 0; ptr++)
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39 if (*ptr == uc)
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40 break;
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41 return ptr - str;
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42 }
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43 /* General case. */
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44 {
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45 const UNIT *ptr = str;
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46 for (; *ptr != 0; ptr++)
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47 if (U_STRCHR (reject, *ptr))
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48 break;
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49 return ptr - str;
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50 }
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51 }