source: trunk/libs/newlib/src/newlib/libc/string/strpbrk.c @ 543

/*
FUNCTION
        <<strpbrk>>---find characters in string

INDEX
        strpbrk

SYNOPSIS
        #include <string.h>
        char *strpbrk(const char *<[s1]>, const char *<[s2]>);

DESCRIPTION
        This function locates the first occurence in the string
        pointed to by <[s1]> of any character in string pointed to by
        <[s2]> (excluding the terminating null character).

RETURNS
        <<strpbrk>> returns a pointer to the character found in <[s1]>, or a
        null pointer if no character from <[s2]> occurs in <[s1]>.

PORTABILITY
<<strpbrk>> requires no supporting OS subroutines.
*/

#include <string.h>

char *
strpbrk (const char *s1,
        const char *s2)
{
  const char *c = s2;
  if (!*s1)
    return (char *) NULL;

  while (*s1)
    {
      for (c = s2; *c; c++)
        {
          if (*s1 == *c)
            break;
        }
      if (*c)
        break;
      s1++;
    }

  if (*c == '\0')
    s1 = NULL;

  return (char *) s1;
}