1 | /* $Id: utf-8-case2.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
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2 | /** @file
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3 | * IPRT - UTF-8 Case Sensitivity and Folding, Part 2 (requires unidata-flags.cpp).
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2019 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * The contents of this file may alternatively be used under the terms
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18 | * of the Common Development and Distribution License Version 1.0
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19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | * VirtualBox OSE distribution, in which case the provisions of the
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21 | * CDDL are applicable instead of those of the GPL.
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22 | *
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23 | * You may elect to license modified versions of this file under the
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24 | * terms and conditions of either the GPL or the CDDL or both.
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25 | */
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26 |
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27 |
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28 | /*********************************************************************************************************************************
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29 | * Header Files *
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30 | *********************************************************************************************************************************/
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31 | #include <iprt/string.h>
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32 | #include "internal/iprt.h"
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33 |
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34 | #include <iprt/uni.h>
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35 | #include <iprt/alloc.h>
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36 | #include <iprt/assert.h>
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37 | #include <iprt/errcore.h>
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38 | #include "internal/string.h"
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39 |
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40 |
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41 | RTDECL(bool) RTStrIsCaseFoldable(const char *psz)
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42 | {
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43 | /*
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44 | * Loop the code points in the string, checking them one by one until we
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45 | * find something that can be folded.
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46 | */
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47 | RTUNICP uc;
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48 | do
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49 | {
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50 | int rc = RTStrGetCpEx(&psz, &uc);
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51 | if (RT_SUCCESS(rc))
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52 | {
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53 | if (RTUniCpIsFoldable(uc))
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54 | return true;
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55 | }
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56 | else
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57 | {
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58 | /* bad encoding, just skip it quietly (uc == RTUNICP_INVALID (!= 0)). */
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59 | AssertRC(rc);
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60 | }
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61 | } while (uc != 0);
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62 |
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63 | return false;
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64 | }
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65 | RT_EXPORT_SYMBOL(RTStrIsCaseFoldable);
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66 |
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67 |
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68 | RTDECL(bool) RTStrIsUpperCased(const char *psz)
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69 | {
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70 | /*
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71 | * Check that there are no lower case chars in the string.
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72 | */
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73 | RTUNICP uc;
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74 | do
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75 | {
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76 | int rc = RTStrGetCpEx(&psz, &uc);
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77 | if (RT_SUCCESS(rc))
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78 | {
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79 | if (RTUniCpIsLower(uc))
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80 | return false;
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81 | }
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82 | else
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83 | {
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84 | /* bad encoding, just skip it quietly (uc == RTUNICP_INVALID (!= 0)). */
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85 | AssertRC(rc);
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86 | }
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87 | } while (uc != 0);
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88 |
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89 | return true;
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90 | }
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91 | RT_EXPORT_SYMBOL(RTStrIsUpperCased);
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92 |
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93 |
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94 | RTDECL(bool) RTStrIsLowerCased(const char *psz)
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95 | {
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96 | /*
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97 | * Check that there are no lower case chars in the string.
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98 | */
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99 | RTUNICP uc;
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100 | do
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101 | {
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102 | int rc = RTStrGetCpEx(&psz, &uc);
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103 | if (RT_SUCCESS(rc))
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104 | {
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105 | if (RTUniCpIsUpper(uc))
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106 | return false;
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107 | }
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108 | else
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109 | {
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110 | /* bad encoding, just skip it quietly (uc == RTUNICP_INVALID (!= 0)). */
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111 | AssertRC(rc);
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112 | }
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113 | } while (uc != 0);
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114 |
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115 | return true;
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116 | }
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117 | RT_EXPORT_SYMBOL(RTStrIsLowerCased);
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118 |
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