src/include/stdio.h

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