| 1 | /* $Id: RTStrICmpAscii.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - RTStrICmpAscii.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2010-2023 Oracle and/or its affiliates.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox base platform packages, as
|
|---|
| 10 | * available from https://www.virtualbox.org.
|
|---|
| 11 | *
|
|---|
| 12 | * This program is free software; you can redistribute it and/or
|
|---|
| 13 | * modify it under the terms of the GNU General Public License
|
|---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
|---|
| 15 | * License.
|
|---|
| 16 | *
|
|---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
|---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 20 | * General Public License for more details.
|
|---|
| 21 | *
|
|---|
| 22 | * You should have received a copy of the GNU General Public License
|
|---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
|---|
| 24 | *
|
|---|
| 25 | * The contents of this file may alternatively be used under the terms
|
|---|
| 26 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
|
|---|
| 28 | * in the VirtualBox distribution, in which case the provisions of the
|
|---|
| 29 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 30 | *
|
|---|
| 31 | * You may elect to license modified versions of this file under the
|
|---|
| 32 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 33 | *
|
|---|
| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 |
|
|---|
| 38 | /*********************************************************************************************************************************
|
|---|
| 39 | * Header Files *
|
|---|
| 40 | *********************************************************************************************************************************/
|
|---|
| 41 | #include <iprt/string.h>
|
|---|
| 42 | #include "internal/iprt.h"
|
|---|
| 43 |
|
|---|
| 44 | #include <iprt/assert.h>
|
|---|
| 45 | #include <iprt/ctype.h>
|
|---|
| 46 |
|
|---|
| 47 |
|
|---|
| 48 | RTDECL(int) RTStrICmpAscii(const char *psz1, const char *psz2)
|
|---|
| 49 | {
|
|---|
| 50 | if (psz1 == psz2)
|
|---|
| 51 | return 0;
|
|---|
| 52 | if (!psz1)
|
|---|
| 53 | return -1;
|
|---|
| 54 | if (!psz2)
|
|---|
| 55 | return 1;
|
|---|
| 56 |
|
|---|
| 57 | for (;;)
|
|---|
| 58 | {
|
|---|
| 59 | RTUNICP uc1;
|
|---|
| 60 | int rc = RTStrGetCpEx(&psz1, &uc1);
|
|---|
| 61 | if (RT_SUCCESS(rc))
|
|---|
| 62 | {
|
|---|
| 63 | unsigned char uch2 = *psz2++; Assert(uch2 < 0x80);
|
|---|
| 64 |
|
|---|
| 65 | /* compare */
|
|---|
| 66 | int iDiff = uc1 - uch2;
|
|---|
| 67 | if (iDiff)
|
|---|
| 68 | {
|
|---|
| 69 | if (uc1 >= 0x80)
|
|---|
| 70 | return 1;
|
|---|
| 71 |
|
|---|
| 72 | iDiff = RT_C_TO_LOWER(uc1) - RT_C_TO_LOWER(uch2); /* Return lower cased diff! */
|
|---|
| 73 | if (iDiff)
|
|---|
| 74 | return iDiff;
|
|---|
| 75 | }
|
|---|
| 76 |
|
|---|
| 77 | if (uch2)
|
|---|
| 78 | { /* likely */ }
|
|---|
| 79 | else
|
|---|
| 80 | return 0;
|
|---|
| 81 | }
|
|---|
| 82 | /* Hit some bad encoding, continue in case sensitive mode. */
|
|---|
| 83 | else
|
|---|
| 84 | return RTStrCmp(psz1 - 1, psz2);
|
|---|
| 85 | }
|
|---|
| 86 | }
|
|---|
| 87 | RT_EXPORT_SYMBOL(RTStrICmpAscii);
|
|---|
| 88 |
|
|---|
