newlib-cygwin/newlib/libc/string/strrchr.c

/*
FUNCTION
	<<strrchr>>---reverse search for character in string

INDEX
	strrchr

SYNOPSIS
	#include <string.h>
	char * strrchr(const char *<[string]>, int <[c]>);

DESCRIPTION
	This function finds the last occurence of <[c]> (converted to
	a char) in the string pointed to by <[string]> (including the
	terminating null character).

RETURNS
	Returns a pointer to the located character, or a null pointer
	if <[c]> does not occur in <[string]>.

PORTABILITY
<<strrchr>> is ANSI C.

<<strrchr>> requires no supporting OS subroutines.

QUICKREF
	strrchr ansi pure
*/

#include <string.h>

char *
strrchr (const char *s,
	int i)
{
  const char *last = NULL;
  char c = i;

  if (c)
    {
      while ((s=strchr(s, c)))
	{
	  last = s;
	  s++;
	}
    }
  else
    {
      last = strchr(s, c);
    }

  return (char *) last;
}