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annotate lib/uniwidth.in.h @ 17848:ab58d4870664

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version-etc: new year * doc/gnulib.texi: * lib/version-etc.c (COPYRIGHT_YEAR): Update copyright date. * all files: Run 'make update-copyright'.
author Paul Eggert <eggert@cs.ucla.edu>
date Thu, 01 Jan 2015 01:38:23 +0000
parents 344018b6e5d7
children
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1 /* Display width functions.
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2 Copyright (C) 2001-2002, 2005, 2007, 2009-2015 Free Software Foundation,
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3 Inc.
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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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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 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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17
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18 #ifndef _UNIWIDTH_H
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19 #define _UNIWIDTH_H
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20
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21 #include "unitypes.h"
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22
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23 /* Get size_t. */
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24 #include <stddef.h>
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25
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26 /* Get locale_charset() declaration. */
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27 #include "localcharset.h"
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28
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29 #ifdef __cplusplus
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30 extern "C" {
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31 #endif
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32
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33
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34 /* Display width. */
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35
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36 /* These functions are locale dependent. The encoding argument identifies
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37 the encoding (e.g. "ISO-8859-2" for Polish). */
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38
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39 /* Determine number of column positions required for UC. */
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40 extern int
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41 uc_width (ucs4_t uc, const char *encoding)
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42 _UC_ATTRIBUTE_PURE;
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43
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44 /* Determine number of column positions required for first N units
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45 (or fewer if S ends before this) in S. */
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46 extern int
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47 u8_width (const uint8_t *s, size_t n, const char *encoding)
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48 _UC_ATTRIBUTE_PURE;
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49 extern int
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50 u16_width (const uint16_t *s, size_t n, const char *encoding)
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51 _UC_ATTRIBUTE_PURE;
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52 extern int
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53 u32_width (const uint32_t *s, size_t n, const char *encoding)
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54 _UC_ATTRIBUTE_PURE;
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55
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56 /* Determine number of column positions required for S. */
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57 extern int
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58 u8_strwidth (const uint8_t *s, const char *encoding)
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59 _UC_ATTRIBUTE_PURE;
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60 extern int
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61 u16_strwidth (const uint16_t *s, const char *encoding)
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62 _UC_ATTRIBUTE_PURE;
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63 extern int
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64 u32_strwidth (const uint32_t *s, const char *encoding)
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65 _UC_ATTRIBUTE_PURE;
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66
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67
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68 #ifdef __cplusplus
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69 }
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70 #endif
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71
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72 #endif /* _UNIWIDTH_H */