mf_dirname.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:3k
- /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA */
- #include "mysys_priv.h"
- #include <m_string.h>
- /* Functions definied in this file */
- uint dirname_length(const char *name)
- {
- register my_string pos,gpos;
- #ifdef FN_DEVCHAR
- if ((pos=strrchr(name,FN_DEVCHAR)) == 0)
- #endif
- pos=(char*) name-1;
- gpos= pos++;
- for ( ; *pos ; pos++) /* Find last FN_LIBCHAR */
- if (*pos == FN_LIBCHAR || *pos == '/'
- #ifdef FN_C_AFTER_DIR
- || *pos == FN_C_AFTER_DIR || *pos == FN_C_AFTER_DIR_2
- #endif
- )
- gpos=pos;
- return ((uint) (uint) (gpos+1-(char*) name));
- }
- /* Gives directory part of filename. Directory ends with '/' */
- /* Returns length of directory part */
- uint dirname_part(my_string to, const char *name)
- {
- uint length;
- DBUG_ENTER("dirname_part");
- DBUG_PRINT("enter",("'%s'",name));
- length=dirname_length(name);
- (void) strmake(to,(char*) name,min(length,FN_REFLEN-2));
- convert_dirname(to); /* Convert chars */
- DBUG_RETURN(length);
- } /* dirname */
- /* convert dirname to use under this system */
- /* If MSDOS converts '/' to '' */
- /* If VMS converts '<' to '[' and '>' to ']' */
- /* Adds a '/' to end if there isn't one and the last isn't a dev_char */
- /* ARGSUSED */
- #ifndef FN_DEVCHAR
- #define FN_DEVCHAR ' ' /* For easier code */
- #endif
- char *convert_dirname(my_string to)
- {
- reg1 char *pos;
- #ifdef FN_UPPER_CASE
- caseup_str(to);
- #endif
- #ifdef FN_LOWER_CASE
- casedn_str(to);
- #endif
- #if FN_LIBCHAR != '/'
- {
- pos=to-1; /* Change from '/' */
- while ((pos=strchr(pos+1,'/')) != 0)
- *pos=FN_LIBCHAR;
- }
- #endif
- #ifdef FN_C_BEFORE_DIR_2
- {
- for (pos=to ; *pos ; pos++)
- {
- if (*pos == FN_C_BEFORE_DIR_2)
- *pos=FN_C_BEFORE_DIR;
- if (*pos == FN_C_AFTER_DIR_2)
- *pos=FN_C_AFTER_DIR;
- }
- }
- #else
- { /* Append FN_LIBCHAR if not there */
- pos=strend(to);
- if (pos != to && (pos[-1] != FN_LIBCHAR && pos[-1] != FN_DEVCHAR))
- {
- *pos++=FN_LIBCHAR;
- *pos=0;
- }
- }
- #endif
- return pos; /* Pointer to end of dir */
- } /* convert_dirname */