1 /***************************************************************************
2  * Copyright (c) 2024 Microsoft Corporation
3  *
4  * This program and the accompanying materials are made available under the
5  * terms of the MIT License which is available at
6  * https://opensource.org/licenses/MIT.
7  *
8  * SPDX-License-Identifier: MIT
9  **************************************************************************/
10 
11 
12 /**************************************************************************/
13 /**************************************************************************/
14 /**                                                                       */
15 /** GUIX Component                                                        */
16 /**                                                                       */
17 /**   Utility (Utility)                                                   */
18 /**                                                                       */
19 /**************************************************************************/
20 
21 #define GX_SOURCE_CODE
22 
23 
24 /* Include necessary system files.  */
25 
26 #include "gx_api.h"
27 #include "gx_utility.h"
28 
29 
30 /**************************************************************************/
31 /*                                                                        */
32 /*  FUNCTION                                               RELEASE        */
33 /*                                                                        */
34 /*    _gx_utility_string_compare                          PORTABLE C      */
35 /*                                                           6.1          */
36 /*  AUTHOR                                                                */
37 /*                                                                        */
38 /*    Kenneth Maxwell, Microsoft Corporation                              */
39 /*                                                                        */
40 /*  DESCRIPTION                                                           */
41 /*                                                                        */
42 /*    This function compares two strings character by character.          */
43 /*                                                                        */
44 /*  INPUT                                                                 */
45 /*                                                                        */
46 /*    string_1                              String to be compared         */
47 /*    string_2                              Another string to be compared */
48 /*    count                                 number of bytes to compare    */
49 /*                                                                        */
50 /*  OUTPUT                                                                */
51 /*                                                                        */
52 /*    [GX_TRUE | GX_FALSE]                  [equal | not equal]           */
53 /*                                                                        */
54 /*  CALLS                                                                 */
55 /*                                                                        */
56 /*    None                                                                */
57 /*                                                                        */
58 /*  CALLED BY                                                             */
59 /*                                                                        */
60 /*    GUIX Internal Code                                                  */
61 /*                                                                        */
62 /*  RELEASE HISTORY                                                       */
63 /*                                                                        */
64 /*    DATE              NAME                      DESCRIPTION             */
65 /*                                                                        */
66 /*  09-30-2020     Kenneth Maxwell          Initial Version 6.1           */
67 /*                                                                        */
68 /**************************************************************************/
_gx_utility_string_compare(GX_CONST GX_STRING * string_1,GX_CONST GX_STRING * string_2,UINT count)69 GX_BOOL _gx_utility_string_compare(GX_CONST GX_STRING *string_1, GX_CONST GX_STRING *string_2, UINT count)
70 {
71 UINT index = 0;
72 
73     if ((string_1 -> gx_string_length < count) || (string_2 -> gx_string_length < count))
74     {
75         /* Not equal.*/
76         return GX_FALSE;
77     }
78 
79     while (index < count)
80     {
81         if (string_1 -> gx_string_ptr[index] != string_2 -> gx_string_ptr[index])
82         {
83             /* Not equal. */
84             return GX_FALSE;
85         }
86 
87         index++;
88     }
89 
90     /* Equal. */
91     return GX_TRUE;
92 }
93 
94