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 /** FileX Component */
16 /** */
17 /** Unicode */
18 /** */
19 /**************************************************************************/
20 /**************************************************************************/
21
22 #define FX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "fx_api.h"
28 #include "fx_unicode.h"
29
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _fx_unicode_length_get_extended PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* William E. Lamie, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function returns the length of the supplied unicode name. */
44 /* */
45 /* INPUT */
46 /* */
47 /* unicode_name Pointer to unicode name */
48 /* buffer_length Buffer length for unicode name*/
49 /* */
50 /* OUTPUT */
51 /* */
52 /* length */
53 /* */
54 /* CALLS */
55 /* */
56 /* None */
57 /* */
58 /* CALLED BY */
59 /* */
60 /* Application Code */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 05-19-2020 William E. Lamie Initial Version 6.0 */
67 /* 09-30-2020 William E. Lamie Modified comment(s), */
68 /* resulting in version 6.1 */
69 /* */
70 /**************************************************************************/
_fx_unicode_length_get_extended(UCHAR * unicode_name,UINT buffer_length)71 ULONG _fx_unicode_length_get_extended(UCHAR *unicode_name, UINT buffer_length)
72 {
73
74 ULONG i;
75 ULONG length;
76
77
78 i = 0;
79 length = 0;
80 while (i < buffer_length)
81 {
82
83 /* See if we are at the end of the unicode string... This assumes that there is a NULL at the end of the string. */
84 if ((unicode_name[i] == 0) && (unicode_name[i + 1] == 0))
85 {
86 break;
87 }
88
89 /* Increment index. */
90 i = i + 2;
91
92 /* Increment the length. */
93 length++;
94 }
95
96 /* If trace is enabled, insert this event into the trace buffer. */
97 FX_TRACE_IN_LINE_INSERT(FX_TRACE_UNICODE_LENGTH_GET, unicode_name, length, 0, 0, FX_TRACE_FILE_EVENTS, 0, 0)
98
99 /* Return length. */
100 return(length);
101 }
102
103
