1#ifndef _STDIO_H 2#define _STDIO_H 3 4FILE_LICENCE ( GPL2_OR_LATER ); 5 6#include <stdint.h> 7#include <stdarg.h> 8 9extern int __attribute__ (( format ( printf, 1, 2 ) )) 10printf ( const char *fmt, ... ); 11 12extern int __attribute__ (( format ( printf, 3, 4 ) )) 13snprintf ( char *buf, size_t size, const char *fmt, ... ); 14 15extern int __attribute__ (( format ( printf, 2, 3 ) )) 16asprintf ( char **strp, const char *fmt, ... ); 17 18extern int vprintf ( const char *fmt, va_list args ); 19 20extern int vsnprintf ( char *buf, size_t size, const char *fmt, va_list args ); 21 22extern int vasprintf ( char **strp, const char *fmt, va_list args ); 23 24/** 25 * Write a formatted string to a buffer 26 * 27 * @v buf Buffer into which to write the string 28 * @v fmt Format string 29 * @v ... Arguments corresponding to the format string 30 * @ret len Length of formatted string 31 */ 32#define sprintf( buf, fmt, ... ) \ 33 snprintf ( (buf), ~( ( size_t ) 0 ), (fmt), ## __VA_ARGS__ ) 34 35/** 36 * Write a formatted string to a buffer 37 * 38 * @v buf Buffer into which to write the string 39 * @v fmt Format string 40 * @v args Arguments corresponding to the format string 41 * @ret len Length of formatted string 42 */ 43static inline int vsprintf ( char *buf, const char *fmt, va_list args ) { 44 return vsnprintf ( buf, ~( ( size_t ) 0 ), fmt, args ); 45} 46 47#endif /* _STDIO_H */ 48