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author | Michael Brown | 2006-05-14 04:51:55 +0200 |
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committer | Michael Brown | 2006-05-14 04:51:55 +0200 |
commit | 2421723a150bfade4f86eb306f70028c56db1e6d (patch) | |
tree | b31067af737c0128a4c0ff1a8df033e02f4d9c91 /src/include | |
parent | At least cope with "%llx" by reading the correct-sized va_arg from the (diff) | |
download | ipxe-2421723a150bfade4f86eb306f70028c56db1e6d.tar.gz ipxe-2421723a150bfade4f86eb306f70028c56db1e6d.tar.xz ipxe-2421723a150bfade4f86eb306f70028c56db1e6d.zip |
Rewrote printf and friends to better support standard C semantics.
Diffstat (limited to 'src/include')
-rw-r--r-- | src/include/vsprintf.h | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/src/include/vsprintf.h b/src/include/vsprintf.h index 7090d5c3..3683fba1 100644 --- a/src/include/vsprintf.h +++ b/src/include/vsprintf.h @@ -44,8 +44,40 @@ * */ -extern int sprintf ( char *buf, const char *fmt, ... ); -extern int snprintf ( char *buf, size_t size, const char *fmt, ... ); -extern int printf ( const char *fmt, ... ); +#include <stdarg.h> + +#define PRINTF_NO_LENGTH ( ( size_t ) -1 ) + +extern int vsnprintf ( char *buf, size_t size, const char *fmt, va_list args ); +extern int vprintf ( const char *fmt, va_list args ); + +extern int __attribute__ (( format ( printf, 3, 4 ) )) +snprintf ( char *buf, size_t size, const char *fmt, ... ); + +extern int __attribute__ (( format ( printf, 1, 2 ) )) +printf ( const char *fmt, ... ); + +/** + * Write a formatted string to a buffer + * + * @v buf Buffer into which to write the string + * @v fmt Format string + * @v ... Arguments corresponding to the format string + * @ret len Length of formatted string + */ +#define sprintf( buf, fmt, ... ) \ + snprintf ( (buf), PRINTF_NO_LENGTH, (fmt), ## __VA_ARGS__ ) + +/** + * Write a formatted string to a buffer + * + * @v buf Buffer into which to write the string + * @v fmt Format string + * @v args Arguments corresponding to the format string + * @ret len Length of formatted string + */ +static inline int vsprintf ( char *buf, const char *fmt, va_list args ) { + return vsnprintf ( buf, PRINTF_NO_LENGTH, fmt, args ); +} #endif /* VSPRINTF_H */ |