1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
// SPDX-License-Identifier: GPL-2.0+
/*
* String functions
*
* Copyright (c) 2020 AKASHI Takahiro, Linaro Limited
*/
#include <common.h>
#include <charset.h>
#include <efi_loader.h>
#include <malloc.h>
/**
* efi_create_indexed_name - create a string name with an index
* @buffer: Buffer
* @name: Name string
* @index: Index
*
* Create a utf-16 string with @name, appending @index.
* For example, u"Capsule0001"
*
* The caller must ensure that the buffer has enough space for the resulting
* string including the trailing L'\0'.
*
* Return: A pointer to the next position after the created string
* in @buffer, or NULL otherwise
*/
u16 *efi_create_indexed_name(u16 *buffer, size_t buffer_size, const char *name,
unsigned int index)
{
u16 *p = buffer;
char index_buf[5];
size_t size;
size = (utf8_utf16_strlen(name) * sizeof(u16) +
sizeof(index_buf) * sizeof(u16));
if (buffer_size < size)
return NULL;
utf8_utf16_strcpy(&p, name);
snprintf(index_buf, sizeof(index_buf), "%04X", index);
utf8_utf16_strcpy(&p, index_buf);
return p;
}
/**
* efi_convert_string - Convert an ASCII or UTF-8 string to UTF-16
* @str: String to be converted
*
* Return: Converted string in UTF-16 format. The caller is responsible for
* freeing this string when it is no longer needed.
*/
efi_string_t efi_convert_string(const char *str)
{
efi_string_t str_16, tmp;
size_t sz_16;
sz_16 = utf8_utf16_strlen(str);
str_16 = calloc(sz_16 + 1, sizeof(u16));
if (!str_16)
return NULL;
tmp = str_16;
utf8_utf16_strcpy(&tmp, str);
return str_16;
}
|