gpxe/src/include/stdio.h

   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 */