1 | /* Copyright (c) 2002 Red Hat Incorporated. |
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2 | All rights reserved. |
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3 | |
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4 | Redistribution and use in source and binary forms, with or without |
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5 | modification, are permitted provided that the following conditions are met: |
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6 | |
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7 | Redistributions of source code must retain the above copyright |
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8 | notice, this list of conditions and the following disclaimer. |
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9 | |
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10 | Redistributions in binary form must reproduce the above copyright |
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11 | notice, this list of conditions and the following disclaimer in the |
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12 | documentation and/or other materials provided with the distribution. |
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13 | |
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14 | The name of Red Hat Incorporated may not be used to endorse |
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15 | or promote products derived from this software without specific |
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16 | prior written permission. |
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17 | |
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18 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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19 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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20 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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21 | ARE DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY |
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22 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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23 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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24 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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25 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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27 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | |
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30 | /* |
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31 | FUNCTION |
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32 | <<iswblank>>, <<iswblank_l>>---blank wide character test |
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33 | |
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34 | INDEX |
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35 | iswblank |
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36 | |
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37 | INDEX |
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38 | iswblank_l |
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39 | |
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40 | SYNOPSIS |
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41 | #include <wctype.h> |
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42 | int iswblank(wint_t <[c]>); |
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43 | |
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44 | #include <wctype.h> |
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45 | int iswblank_l(wint_t <[c]>, locale_t <[locale]>); |
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46 | |
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47 | DESCRIPTION |
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48 | <<iswblank>> is a function which classifies wide-character values that |
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49 | are categorized as blank. |
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50 | |
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51 | <<iswblank_l>> is like <<iswblank>> but performs the check based on the |
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52 | locale specified by the locale object locale. If <[locale]> is |
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53 | LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined. |
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54 | |
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55 | RETURNS |
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56 | <<iswblank>>, <<iswblank_l>> return non-zero if <[c]> is a blank wide character. |
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57 | |
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58 | PORTABILITY |
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59 | <<iswblank>> is C99. |
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60 | <<iswblank_l>> is POSIX-1.2008. |
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61 | |
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62 | No supporting OS subroutines are required. |
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63 | */ |
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64 | #include <_ansi.h> |
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65 | #include <newlib.h> |
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66 | #include <wctype.h> |
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67 | #include <ctype.h> |
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68 | #include <string.h> |
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69 | #include "local.h" |
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70 | |
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71 | int |
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72 | iswblank (wint_t c) |
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73 | { |
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74 | #ifdef _MB_CAPABLE |
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75 | c = _jp2uc (c); |
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76 | /* Based on Unicode 5.2. Control char 09, plus all characters |
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77 | from general category "Zs", which are not marked as decomposition |
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78 | type "noBreak". */ |
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79 | return (c == 0x0009 || c == 0x0020 || |
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80 | c == 0x1680 || c == 0x180e || |
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81 | (c >= 0x2000 && c <= 0x2006) || |
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82 | (c >= 0x2008 && c <= 0x200a) || |
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83 | c == 0x205f || c == 0x3000); |
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84 | #else |
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85 | return (c < 0x100 ? isblank (c) : 0); |
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86 | #endif /* _MB_CAPABLE */ |
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87 | } |
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