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/* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/* my_setwd() and my_getwd() works with intern_filenames !! */
#include "mysys_priv.h"
#include "my_sys.h"
#include <m_string.h>
#include "mysys_err.h"
#include "my_thread_local.h"
#if defined(_WIN32)
#include <m_ctype.h>
#include <dos.h>
#include <direct.h>
#endif
/* Gets current working directory in buff.
SYNPOSIS
my_getwd()
buf Buffer to store result. Can be curr_dir[].
size Size of buffer
MyFlags Flags
NOTES
Directory is allways ended with FN_LIBCHAR
RESULT
0 ok
# error
*/
int my_getwd(char * buf, size_t size, myf MyFlags)
{
char * pos;
DBUG_ENTER("my_getwd");
DBUG_PRINT("my",("buf: 0x%lx size: %u MyFlags %d",
(long) buf, (uint) size, MyFlags));
if (size < 1)
DBUG_RETURN(-1);
if (curr_dir[0]) /* Current pos is saved here */
(void) strmake(buf,&curr_dir[0],size-1);
else
{
if (size < 2)
DBUG_RETURN(-1);
if (!getcwd(buf,(uint) (size-2)) && MyFlags & MY_WME)
{
char errbuf[MYSYS_STRERROR_SIZE];
set_my_errno(errno);
my_error(EE_GETWD, MYF(0),
errno, my_strerror(errbuf, sizeof(errbuf), errno));
DBUG_RETURN(-1);
}
if (*((pos=strend(buf))-1) != FN_LIBCHAR) /* End with FN_LIBCHAR */
{
pos[0]= FN_LIBCHAR;
pos[1]=0;
}
(void) strmake(&curr_dir[0],buf, (size_t) (FN_REFLEN-1));
}
DBUG_RETURN(0);
} /* my_getwd */
/* Set new working directory */
int my_setwd(const char *dir, myf MyFlags)
{
int res;
size_t length;
char *start, *pos;
DBUG_ENTER("my_setwd");
DBUG_PRINT("my",("dir: '%s' MyFlags %d", dir, MyFlags));
start=(char *) dir;
if (! dir[0] || (dir[0] == FN_LIBCHAR && dir[1] == 0))
dir=FN_ROOTDIR;
if ((res=chdir((char*) dir)) != 0)
{
set_my_errno(errno);
if (MyFlags & MY_WME)
{
char errbuf[MYSYS_STRERROR_SIZE];
my_error(EE_SETWD, MYF(0), start,
errno, my_strerror(errbuf, sizeof(errbuf), errno));
}
}
else
{
if (test_if_hard_path(start))
{ /* Hard pathname */
pos= strmake(&curr_dir[0],start,(size_t) FN_REFLEN-1);
if (pos[-1] != FN_LIBCHAR)
{
length=(uint) (pos-(char*) curr_dir);
curr_dir[length]=FN_LIBCHAR; /* must end with '/' */
curr_dir[length+1]='\0';
}
}
else
curr_dir[0]='\0'; /* Don't save name */
}
DBUG_RETURN(res);
} /* my_setwd */
/* Test if hard pathname */
/* Returns 1 if dirname is a hard path */
int test_if_hard_path(const char *dir_name)
{
if (dir_name[0] == FN_HOMELIB && dir_name[1] == FN_LIBCHAR)
return (home_dir != NullS && test_if_hard_path(home_dir));
if (dir_name[0] == FN_LIBCHAR)
return (TRUE);
#ifdef FN_DEVCHAR
return (strchr(dir_name,FN_DEVCHAR) != 0);
#else
return FALSE;
#endif
} /* test_if_hard_path */
/*
Test if a name contains an (absolute or relative) path.
SYNOPSIS
has_path()
name The name to test.
RETURN
TRUE name contains a path.
FALSE name does not contain a path.
*/
my_bool has_path(const char *name)
{
return MY_TEST(strchr(name, FN_LIBCHAR))
#if FN_LIBCHAR != '/'
|| MY_TEST(strchr(name,'/'))
#endif
#ifdef FN_DEVCHAR
|| MY_TEST(strchr(name, FN_DEVCHAR))
#endif
;
}
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