mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-11-12 04:26:41 +08:00
100 lines
4.4 KiB
C
100 lines
4.4 KiB
C
//-----------------------------------------------------------------------------
|
|
// Borrowed initially from https://github.com/mpaland/printf
|
|
// Copyright (C) Marco Paland 2014-2019, PALANDesign Hannover, Germany
|
|
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// See LICENSE.txt for the text of the license.
|
|
//-----------------------------------------------------------------------------
|
|
// Tiny printf, sprintf and (v)snprintf implementation, optimized for speed on
|
|
// embedded systems with a very limited resources. These routines are thread
|
|
// safe and reentrant!
|
|
// Use this instead of the bloated standard/newlib printf cause these use
|
|
// malloc for printf (and may not be thread safe).
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#ifndef _PRINTF_H_
|
|
#define _PRINTF_H_
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <stdarg.h>
|
|
|
|
/**
|
|
* 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 printf printf_
|
|
int printf_(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 sprintf sprintf_
|
|
int sprintf_(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 snprintf snprintf_
|
|
#define vsnprintf vsnprintf_
|
|
int snprintf_(char *buffer, size_t count, const char *format, ...);
|
|
int vsnprintf_(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 vprintf vprintf_
|
|
int vprintf_(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 fctprintf(void (*out)(char character, void *arg), void *arg, const char *format, ...);
|
|
|
|
#endif // _PRINTF_H_
|