1
/* Copyright (C) 2000 MySQL AB
3
This program is free software; you can redistribute it and/or modify
4
it under the terms of the GNU General Public License as published by
5
the Free Software Foundation; version 2 of the License.
7
This program is distributed in the hope that it will be useful,
8
but WITHOUT ANY WARRANTY; without even the implied warranty of
9
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10
GNU General Public License for more details.
12
You should have received a copy of the GNU General Public License
13
along with this program; if not, write to the Free Software
14
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
16
#include "mysys_priv.h"
17
#include <mystrings/m_string.h>
18
#include "my_static.h"
24
static char *find_file_in_path(char *to,const char *name);
26
/* Finds where program can find it's files.
27
pre_pathname is found by first locking at progname (argv[0]).
28
if progname contains path the path is returned.
29
else if progname is found in path, return it
30
else if progname is given and POSIX environment variable "_" is set
31
then path is taken from "_".
32
If filename doesn't contain a path append MY_BASEDIR_VERSION or
33
MY_BASEDIR if defined, else append "/my/running".
34
own_path_name_part is concatinated to result.
35
my_path puts result in to and returns to */
37
char * my_path(char * to, const char *progname,
38
const char *own_pathname_part)
40
char *start, *end, *prog;
43
start=to; /* Return this */
44
if (progname && (dirname_part(to, progname, &to_length) ||
45
find_file_in_path(to,progname) ||
46
((prog=getenv("_")) != 0 &&
47
dirname_part(to, prog, &to_length))))
49
intern_filename(to,to);
50
if (!test_if_hard_path(to))
52
if (!getcwd(curr_dir,FN_REFLEN))
53
bchange((unsigned char*) to, 0, (unsigned char*) curr_dir, strlen(curr_dir), strlen(to)+1);
58
if ((end = getenv("MY_BASEDIR_VERSION")) == 0 &&
59
(end = getenv("MY_BASEDIR")) == 0)
61
#ifdef DEFAULT_BASEDIR
62
end= (char*) DEFAULT_BASEDIR;
67
intern_filename(to,end);
69
if (to != start && to[-1] != FN_LIBCHAR)
71
strcpy(to,own_pathname_part);
77
/* test if file without filename is found in path */
78
/* Returns to if found and to has dirpart if found, else NULL */
82
static char *find_file_in_path(char *to, const char *name)
84
char *path, *pos, dir[2];
86
ostringstream sstream;
88
if (!(path=getenv("PATH")))
90
dir[0]=FN_LIBCHAR; dir[1]=0;
91
#ifdef PROGRAM_EXTENSION
93
ext=PROGRAM_EXTENSION;
96
for (pos=path ; (pos=strchr(pos,PATH_SEP)) ; path= ++pos)
100
sstream << path << dir << name << ext << '\0';
101
strncpy(to, sstream.str().c_str(), sstream.str().length());
102
if (!access(to,F_OK))
104
to[(uint) (pos-path)+1]=0; /* Return path only */
109
return NULL; /* File not found */
112
/* Test if hard pathname */
113
/* Returns true if dirname is a hard path */
115
bool test_if_hard_path(register const char *dir_name)
117
if (dir_name[0] == FN_HOMELIB && dir_name[1] == FN_LIBCHAR)
118
return (home_dir != NULL && test_if_hard_path(home_dir));
119
if (dir_name[0] == FN_LIBCHAR)
122
} /* test_if_hard_path */