strlcpy.cc File Reference

#include <stdio.h>
#include <string.h>
#include "strlcpy.h"

Go to the source code of this file.

Functions
size_t	strlcpy (char *dst, const char *src, size_t size)
size_t	strlcat (char *dst, const char *src, size_t size)

Function Documentation

strlcpy()

size_t strlcpy	(	char *	dst,
		const char *	src,
		size_t	size )

Definition at line 39 of file strlcpy.cc.

{
  char *d = dst;
  const char *s = src;
  size_t n = size;
 
  /* Copy as many bytes as will fit */
  if (n != 0 && --n != 0) {
    do {
      if ((*d++ = *s++) == 0)
        break;
    } while (--n != 0);
  }
 
  /* Not enough room in dst, add NUL and traverse rest of src */
  if (n == 0) {
    if (size != 0)
      *d = '\0';             /* NUL-terminate dst */
    while (*s++);
  }
 
  return (s - src - 1);        /* count does not include NUL */
}

strlcat()

size_t strlcat	(	char *	dst,
		const char *	src,
		size_t	size )

Definition at line 72 of file strlcpy.cc.

{
  char *d = dst;
  const char *s = src;
  size_t n = size;
  size_t dlen;
 
  /* Find the end of dst and adjust bytes left but don't go past end */
  while (n-- != 0 && *d != '\0')
    d++;
  dlen = d - dst;
  n = size - dlen;
 
  if (n == 0)
    return (dlen + strlen(s));
  while (*s != '\0') {
    if (n != 1) {
      *d++ = *s;
      n--;
    }
    s++;
  }
  *d = '\0';
 
  return (dlen + (s - src));   /* count does not include NUL */
}