psnprintf.h

来自「COS 0.0.1.rar Cos操作系统源代码」· C头文件 代码 · 共 43 行

/*
 This is part of psnprintf-0.4, see the file "license-psnprintf-0.4".
 
 Changed 16/10/04 for cos by Paul Barker:
	Stripped out all floating point stuff.
*/

#ifndef PSNPRINTF_H
#define PSNPRINTF_H

#include <stdarg.h>

int psnprintf(char *str, size_t n, const char *format, ...);
int pvsnprintf(char *str, size_t n, const char *format, va_list ap);

/* Use these directly if you want to avoid overhead of psnprintf
 * Return value is number of characters printed (or number printed
 * if there had been enough room).
 */
int pvsnfmt_char(char **pinsertion, size_t *nmax, const char fmt, int flags, 
                 int width, int precision, char prefix, va_list *ap);

int pvsnfmt_int(char **pinsertion, size_t *nmax, char fmt, int flags, 
                 int width, int precision, char prefix, va_list *ap);

int pvsnfmt_str(char **pinsertion, size_t *nmax, const char fmt, int flags, 
                 int width, int precision, char prefix, va_list *ap);
   
/* These are the flags you need (use logical OR) for the flags parameter of
 * fmt functions above.
 */
#define FLAG_DEFAULT         0x00
#define FLAG_LEFT_ALIGN      0x01 /* - */
#define FLAG_SIGNED          0x02 /* + */
#define FLAG_ZERO_PAD        0x04 /* 0 */
#define FLAG_SIGN_PAD        0x08 /* ' ' */
#define FLAG_HASH            0x10 /* #  */
                 
/* Portable strnlen function (doesn't exist on all systems!) */
size_t pstrnlen(const char *s, size_t count);

#endif /* ifdef PSNPRINTF_H */