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/*
* Copyright (c) 2006-2024, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2024-03-10 Meco Man the first version
*/
#include <rtthread.h>
#if defined(RT_KLIBC_USING_LIBC_VSSCANF) || \
defined(RT_KLIBC_USING_LIBC_VSNPRINTF)
#include <stdio.h>
#endif
/**
* @brief This function will fill a formatted string to buffer.
*
* @param buf is the buffer to save formatted string.
*
* @param size is the size of buffer.
*
* @param fmt is the format parameters.
*
* @return The number of characters actually written to buffer.
*/
int rt_snprintf(char *buf, rt_size_t size, const char *fmt, ...)
{
rt_int32_t n = 0;
va_list args;
va_start(args, fmt);
n = rt_vsnprintf(buf, size, fmt, args);
va_end(args);
return n;
}
RTM_EXPORT(rt_snprintf);
/**
* @brief This function will fill a formatted string to buffer.
*
* @param buf is the buffer to save formatted string.
*
* @param format is the format parameters.
*
* @param arg_ptr is a list of variable parameters.
*
* @return The number of characters actually written to buffer.
*/
int rt_vsprintf(char *buf, const char *format, va_list arg_ptr)
{
return rt_vsnprintf(buf, (rt_size_t) - 1, format, arg_ptr);
}
RTM_EXPORT(rt_vsprintf);
/**
* @brief This function will fill a formatted string to buffer
*
* @param buf the buffer to save formatted string.
*
* @param format is the format parameters.
*
* @return The number of characters actually written to buffer.
*/
int rt_sprintf(char *buf, const char *format, ...)
{
rt_int32_t n = 0;
va_list arg_ptr;
va_start(arg_ptr, format);
n = rt_vsprintf(buf, format, arg_ptr);
va_end(arg_ptr);
return n;
}
RTM_EXPORT(rt_sprintf);
#ifdef RT_KLIBC_USING_LIBC_VSNPRINTF
int rt_vsnprintf(char *buf, rt_size_t size, const char *fmt, va_list args)
{
return vsnprintf(buf, size, fmt, args);
}
#endif /* RT_KLIBC_USING_LIBC_VSNPRINTF */
RTM_EXPORT(rt_vsnprintf);
#ifdef RT_KLIBC_USING_LIBC_VSSCANF
int rt_vsscanf(const char *buffer, const char *format, va_list ap)
{
return vsscanf(buffer, format, ap);
}
#endif /* RT_KLIBC_USING_LIBC_VSSCANF */
RTM_EXPORT(rt_vsscanf);
/**
* @brief This function parses a formatted string from the input string.
*
* @param str the input string to be parsed.
*
* @param format the format string that specifies how to interpret the input.
*
* @return The number of input items successfully matched and assigned.
*/
int rt_sscanf(const char *str, const char *format, ...)
{
va_list ap;
int rv;
va_start(ap, format);
rv = rt_vsscanf(str, format, ap);
va_end(ap);
return rv;
}
RTM_EXPORT(rt_sscanf);
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