117 lines
4.8 KiB
C
117 lines
4.8 KiB
C
///////////////////////////////////////////////////////////////////////////////
|
|
// \author (c) Marco Paland (info@paland.com)
|
|
// 2014-2019, PALANDesign Hannover, Germany
|
|
//
|
|
// \license The MIT License (MIT)
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
//
|
|
// \brief Tiny printf, sprintf and snprintf implementation, optimized for speed on
|
|
// embedded systems with a very limited resources.
|
|
// Use this instead of bloated standard/newlib printf.
|
|
// These routines are thread safe and reentrant.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _PRINTF_H_
|
|
#define _PRINTF_H_
|
|
|
|
#include <stdarg.h>
|
|
#include <stddef.h>
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/**
|
|
* Output a character to a custom device like UART, used by the printf() function
|
|
* This function is declared here only. You have to write your custom implementation somewhere
|
|
* \param character Character to output
|
|
*/
|
|
void _putchar(char character);
|
|
|
|
|
|
/**
|
|
* Tiny printf implementation
|
|
* You have to implement _putchar if you use printf()
|
|
* To avoid conflicts with the regular printf() API it is overridden by macro defines
|
|
* and internal underscore-appended functions like printf_() are used
|
|
* \param format A string that specifies the format of the output
|
|
* \return The number of characters that are written into the array, not counting the terminating null character
|
|
*/
|
|
#define kprintf kprintf_
|
|
int kprintf_(const char* format, ...);
|
|
|
|
|
|
/**
|
|
* Tiny sprintf implementation
|
|
* Due to security reasons (buffer overflow) YOU SHOULD CONSIDER USING (V)SNPRINTF INSTEAD!
|
|
* \param buffer A pointer to the buffer where to store the formatted string. MUST be big enough to store the output!
|
|
* \param format A string that specifies the format of the output
|
|
* \return The number of characters that are WRITTEN into the buffer, not counting the terminating null character
|
|
*/
|
|
#define ksprintf ksprintf_
|
|
int ksprintf_(char* buffer, const char* format, ...);
|
|
|
|
|
|
/**
|
|
* Tiny snprintf/vsnprintf implementation
|
|
* \param buffer A pointer to the buffer where to store the formatted string
|
|
* \param count The maximum number of characters to store in the buffer, including a terminating null character
|
|
* \param format A string that specifies the format of the output
|
|
* \param va A value identifying a variable arguments list
|
|
* \return The number of characters that COULD have been written into the buffer, not counting the terminating
|
|
* null character. A value equal or larger than count indicates truncation. Only when the returned value
|
|
* is non-negative and less than count, the string has been completely written.
|
|
*/
|
|
#define ksnprintf ksnprintf_
|
|
#define kvsnprintf kvsnprintf_
|
|
int ksnprintf_(char* buffer, size_t count, const char* format, ...);
|
|
int kvsnprintf_(char* buffer, size_t count, const char* format, va_list va);
|
|
|
|
|
|
/**
|
|
* Tiny vprintf implementation
|
|
* \param format A string that specifies the format of the output
|
|
* \param va A value identifying a variable arguments list
|
|
* \return The number of characters that are WRITTEN into the buffer, not counting the terminating null character
|
|
*/
|
|
#define kvprintf kvprintf_
|
|
int kvprintf_(const char* format, va_list va);
|
|
|
|
|
|
/**
|
|
* printf with output function
|
|
* You may use this as dynamic alternative to printf() with its fixed _putchar() output
|
|
* \param out An output function which takes one character and an argument pointer
|
|
* \param arg An argument pointer for user data passed to output function
|
|
* \param format A string that specifies the format of the output
|
|
* \return The number of characters that are sent to the output function, not counting the terminating null character
|
|
*/
|
|
int kfctprintf(void (*out)(char character, void* arg), void* arg, const char* format, ...);
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
|
|
#endif // _PRINTF_H_
|