1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/* Copyright (C) 2000 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "mysys_priv.h"
#include <mystrings/m_string.h>
/*
Formats a filename with possible replace of directory of extension
Function can handle the case where 'to' == 'name'
For a description of the flag values, consult my_sys.h
The arguments should be in unix format.
*/
char * fn_format(char * to, const char *name, const char *dir,
const char *extension, uint flag)
{
char dev[FN_REFLEN], buff[FN_REFLEN], *pos;
const char *startpos = name;
const char *ext;
register size_t length;
size_t dev_length;
/* Copy and skip directory */
name+=(length=dirname_part(dev, startpos, &dev_length));
if (length == 0 || (flag & MY_REPLACE_DIR))
{
/* Use given directory */
convert_dirname(dev,dir,NullS); /* Fix to this OS */
}
else if ((flag & MY_RELATIVE_PATH) && !test_if_hard_path(dev))
{
/* Put 'dir' before the given path */
strmake(buff,dev,sizeof(buff)-1);
pos=convert_dirname(dev,dir,NullS);
strmake(pos,buff,sizeof(buff)-1- (int) (pos-dev));
}
if (flag & MY_PACK_FILENAME)
pack_dirname(dev,dev); /* Put in ./.. and ~/.. */
if (flag & MY_UNPACK_FILENAME)
(void) unpack_dirname(dev,dev); /* Replace ~/.. with dir */
if (!(flag & MY_APPEND_EXT) &&
(pos= (char*) strchr(name,FN_EXTCHAR)) != NullS)
{
if ((flag & MY_REPLACE_EXT) == 0) /* If we should keep old ext */
{
length=strlength(name); /* Use old extension */
ext = "";
}
else
{
length= (size_t) (pos-(char*) name); /* Change extension */
ext= extension;
}
}
else
{
length=strlength(name); /* No ext, use the now one */
ext=extension;
}
if (strlen(dev)+length+strlen(ext) >= FN_REFLEN || length >= FN_LEN )
{
/* To long path, return original or NULL */
size_t tmp_length;
if (flag & MY_SAFE_PATH)
return NullS;
tmp_length= strlength(startpos);
(void) strmake(to,startpos,cmin(tmp_length,FN_REFLEN-1));
}
else
{
if (to == startpos)
{
memcpy(buff, name, length); /* Save name for last copy */
name=buff;
}
pos=strmake(my_stpcpy(to,dev),name,length);
(void) my_stpcpy(pos,ext); /* Don't convert extension */
}
/*
If MY_RETURN_REAL_PATH and MY_RESOLVE_SYMLINK is given, only do
realpath if the file is a symbolic link
*/
if (flag & MY_RETURN_REAL_PATH)
(void) my_realpath(to, to, MYF(flag & MY_RESOLVE_SYMLINKS ?
MY_RESOLVE_LINK: 0));
else if (flag & MY_RESOLVE_SYMLINKS)
{
my_stpcpy(buff,to);
(void) my_readlink(to, buff, MYF(0));
}
return(to);
} /* fn_format */
/*
strlength(const string str)
Return length of string with end-space:s not counted.
*/
size_t strlength(const char *str)
{
register const char * pos;
register const char * found;
pos= found= str;
while (*pos)
{
if (*pos != ' ')
{
while (*++pos && *pos != ' ') {};
if (!*pos)
{
found=pos; /* String ends here */
break;
}
}
found=pos;
while (*++pos == ' ') {};
}
return((size_t) (found - str));
} /* strlength */
|