mf_fn_ext.c

php-4.4.7学习linux时下载的源代码

/* Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB 
This file is public domain and comes with NO WARRANTY of any kind */

/* Returnerar en pekare till filnamnets extension. */

#include "mysys_priv.h"
#include <m_string.h>

	/* Return a pointerto the extension of the filename
	   The pointer points at the extension character (normally '.'))
	   If there isn't any extension, the pointer points at the end
	   NULL of the filename
	*/

my_string fn_ext(const char *name)
{
  register my_string pos,gpos;
  DBUG_ENTER("fn_ext");
  DBUG_PRINT("mfunkt",("name: '%s'",name));

#if defined(FN_DEVCHAR) || defined(FN_C_AFTER_DIR)
  {
    char buff[FN_REFLEN];
    gpos=(my_string) name+dirname_part(buff,(char*) name);
  }
#else
  if (!(gpos=strrchr(name,FNLIBCHAR)))
    gpos=name;
#endif
  pos=strrchr(gpos,FN_EXTCHAR);
  DBUG_RETURN (pos ? pos : strend(gpos));
} /* fn_ext */