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// 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>
/**
* 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, L"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;
}
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