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/* 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., 51 Franklin Street, Fifth Floor, Boston,
MA 02111-1301, USA */
#include "mysys_priv.h"
#include <m_string.h>
#ifdef HAVE_REALPATH
#include <sys/param.h>
#include <sys/stat.h>
#endif
/* format a filename with replace of library and extension */
/* params to and name may be identicall */
/* function doesn't change name if name != to */
/* Flag may be: 1 replace filenames library with 'dsk' */
/* 2 replace extension with 'form' */
/* 4 Unpack filename (replace ~ with home) */
/* 8 Pack filename as short as possibly */
/* 16 Resolve symbolic links for filename */
/* 32 Resolve filename to full path */
/* 64 Return NULL if too long path */
#ifdef SCO
#define BUFF_LEN 4097
#else
#ifdef MAXPATHLEN
#define BUFF_LEN MAXPATHLEN
#else
#define BUFF_LEN FN_LEN
#endif
#endif
my_string fn_format(my_string to, const char *name, const char *dsk,
const char *form, int flag)
{
reg1 uint length;
char dev[FN_REFLEN], buff[BUFF_LEN], *pos, *startpos;
const char *ext;
DBUG_ENTER("fn_format");
DBUG_PRINT("enter",("name: %s dsk: %s form: %s flag: %d",
name,dsk,form,flag));
/* Kopiera & skippa enheten */
name+=(length=dirname_part(dev,(startpos=(my_string) name)));
if (length == 0 || flag & 1)
{
(void) strmake(dev,dsk, sizeof(dev) - 2);
/* Use given directory */
convert_dirname(dev); /* Fix to this OS */
}
if (flag & 8)
pack_dirname(dev,dev); /* Put in ./.. and ~/.. */
if (flag & 4)
(void) unpack_dirname(dev,dev); /* Replace ~/.. with dir */
if ((pos=(char*)strchr(name,FN_EXTCHAR)) != NullS)
{
if ((flag & 2) == 0) /* Skall vi byta extension ? */
{
length=strlength(name); /* Old extension */
ext = "";
}
else
{
length=(uint) (pos-(char*) name); /* Change extension */
ext= form;
}
}
else
{
length=strlength(name); /* Har ingen ext- tag nya */
ext=form;
}
if (strlen(dev)+length+strlen(ext) >= FN_REFLEN || length >= FN_LEN )
{ /* To long path, return original */
uint tmp_length;
if (flag & 64)
return 0;
tmp_length=strlength(startpos);
DBUG_PRINT("error",("dev: '%s' ext: '%s' length: %d",dev,ext,length));
(void) strmake(to,startpos,min(tmp_length,FN_REFLEN-1));
}
else
{
if (to == startpos)
{
bmove(buff,(char*) name,length); /* Save name for last copy */
name=buff;
}
pos=strmake(strmov(to,dev),name,length);
#ifdef FN_UPPER_CASE
caseup_str(to);
#endif
#ifdef FN_LOWER_CASE
casedn_str(to);
#endif
(void) strmov(pos,ext); /* Don't convert extension */
}
/* Purify gives a lot of UMR errors when using realpath */
#if defined(HAVE_REALPATH) && !defined(HAVE_purify) && !defined(HAVE_BROKEN_REALPATH)
if (flag & 16)
{
struct stat stat_buff;
if (flag & 32 || (!lstat(to,&stat_buff) && S_ISLNK(stat_buff.st_mode)))
{
if (realpath(to,buff))
strmake(to,buff,FN_REFLEN-1);
}
}
#endif
DBUG_RETURN (to);
} /* fn_format */
/*
strlength(const string str)
Return length of string with end-space:s not counted.
*/
size_s strlength(const char *str)
{
reg1 my_string pos;
reg2 my_string found;
DBUG_ENTER("strlength");
pos=found=(char*) str;
while (*pos)
{
if (*pos != ' ')
{
while (*++pos && *pos != ' ') {};
if (!*pos)
{
found=pos; /* String ends here */
break;
}
}
found=pos;
while (*++pos == ' ') {};
}
DBUG_RETURN((size_s) (found-(char*) str));
} /* strlength */
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