1 #ifndef _STDIO_H 2 #define _STDIO_H 3 4 FILE_LICENCE ( GPL2_OR_LATER ); 5 6 #include <stdint.h> 7 #include <stdarg.h> 8 9 extern int __attribute__ (( format ( printf, 1, 2 ) )) 10 printf ( const char *fmt, ... ); 11 12 extern int __attribute__ (( format ( printf, 3, 4 ) )) 13 snprintf ( char *buf, size_t size, const char *fmt, ... ); 14 15 extern int __attribute__ (( format ( printf, 2, 3 ) )) 16 asprintf ( char **strp, const char *fmt, ... ); 17 18 extern int vprintf ( const char *fmt, va_list args ); 19 20 extern int vsnprintf ( char *buf, size_t size, const char *fmt, va_list args ); 21 22 extern 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 */ 43 static 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
