| 1 | /* $Id: utf-8-case2.cpp 106061 2024-09-16 14:03:52Z 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) 2006-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include <iprt/string.h>
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| 42 | #include "internal/iprt.h"
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| 43 |
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| 44 | #include <iprt/uni.h>
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| 45 | #include <iprt/alloc.h>
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| 46 | #include <iprt/assert.h>
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| 47 | #include <iprt/errcore.h>
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| 48 | #include "internal/string.h"
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| 49 |
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| 50 |
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| 51 | RTDECL(bool) RTStrIsCaseFoldable(const char *psz)
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| 52 | {
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| 53 | /*
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| 54 | * Loop the code points in the string, checking them one by one until we
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| 55 | * find something that can be folded.
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| 56 | */
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| 57 | RTUNICP uc;
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| 58 | do
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| 59 | {
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| 60 | int rc = RTStrGetCpEx(&psz, &uc);
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| 61 | if (RT_SUCCESS(rc))
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| 62 | {
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| 63 | if (RTUniCpIsFoldable(uc))
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| 64 | return true;
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| 65 | }
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| 66 | else
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| 67 | {
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| 68 | /* bad encoding, just skip it quietly (uc == RTUNICP_INVALID (!= 0)). */
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| 69 | AssertRC(rc);
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| 70 | }
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| 71 | } while (uc != 0);
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| 72 |
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| 73 | return false;
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| 74 | }
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| 75 | RT_EXPORT_SYMBOL(RTStrIsCaseFoldable);
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| 76 |
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| 77 |
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| 78 | RTDECL(bool) RTStrIsUpperCased(const char *psz)
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| 79 | {
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| 80 | /*
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| 81 | * Check that there are no lower case chars in the string.
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| 82 | */
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| 83 | RTUNICP uc;
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| 84 | do
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| 85 | {
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| 86 | int rc = RTStrGetCpEx(&psz, &uc);
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| 87 | if (RT_SUCCESS(rc))
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| 88 | {
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| 89 | if (RTUniCpIsLower(uc))
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| 90 | return false;
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| 91 | }
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| 92 | else
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| 93 | {
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| 94 | /* bad encoding, just skip it quietly (uc == RTUNICP_INVALID (!= 0)). */
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| 95 | AssertRC(rc);
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| 96 | }
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| 97 | } while (uc != 0);
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| 98 |
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| 99 | return true;
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| 100 | }
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| 101 | RT_EXPORT_SYMBOL(RTStrIsUpperCased);
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| 102 |
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| 103 |
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| 104 | RTDECL(bool) RTStrIsLowerCased(const char *psz)
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| 105 | {
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| 106 | /*
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| 107 | * Check that there are no lower case chars in the string.
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| 108 | */
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| 109 | RTUNICP uc;
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| 110 | do
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| 111 | {
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| 112 | int rc = RTStrGetCpEx(&psz, &uc);
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| 113 | if (RT_SUCCESS(rc))
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| 114 | {
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| 115 | if (RTUniCpIsUpper(uc))
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| 116 | return false;
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| 117 | }
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| 118 | else
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| 119 | {
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| 120 | /* bad encoding, just skip it quietly (uc == RTUNICP_INVALID (!= 0)). */
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| 121 | AssertRC(rc);
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| 122 | }
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| 123 | } while (uc != 0);
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| 124 |
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| 125 | return true;
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| 126 | }
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| 127 | RT_EXPORT_SYMBOL(RTStrIsLowerCased);
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| 128 |
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