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
138
139
140
141
142
143
144
|
/* 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/mysys_priv.h"
#include <mystrings/m_string.h>
#include <algorithm>
using namespace std;
/* Functions definied in this file */
size_t dirname_length(const char *name)
{
register const char *pos, *gpos;
#ifdef FN_DEVCHAR
if ((pos=(char*)strrchr(name,FN_DEVCHAR)) == 0)
#endif
pos=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 gpos-name+1;
}
/*
Gives directory part of filename. Directory ends with '/'
SYNOPSIS
dirname_part()
to Store directory name here
name Original name
to_length Store length of 'to' here
RETURN
# Length of directory part in 'name'
*/
size_t dirname_part(char *to, const char *name, size_t *to_res_length)
{
size_t length;
length=dirname_length(name);
*to_res_length= (size_t) (convert_dirname(to, name, name+length) - to);
return(length);
} /* dirname */
/*
Convert directory name to use under this system
SYNPOSIS
convert_dirname()
to Store result here. Must be at least of size
min(FN_REFLEN, strlen(from) + 1) to make room
for adding FN_LIBCHAR at the end.
from Original filename. May be == to
from_end Pointer at end of filename (normally end \0)
IMPLEMENTATION
If MSDOS converts '/' to '\'
If VMS converts '<' to '[' and '>' to ']'
Adds a FN_LIBCHAR to end if the result string if there isn't one
and the last isn't dev_char.
Copies data from 'from' until ASCII(0) for until from == from_end
If you want to use the whole 'from' string, just send NULL as the
last argument.
If the result string is larger than FN_REFLEN -1, then it's cut.
RETURN
Returns pointer to end \0 in to
*/
#ifndef FN_DEVCHAR
#define FN_DEVCHAR '\0' /* For easier code */
#endif
char *convert_dirname(char *to, const char *from, const char *from_end)
{
char *to_org=to;
/* We use -2 here, becasue we need place for the last FN_LIBCHAR */
if (!from_end || (from_end - from) > FN_REFLEN-2)
from_end=from+FN_REFLEN -2;
#if FN_LIBCHAR != '/' || defined(FN_C_BEFORE_DIR_2)
{
for (; from != from_end && *from ; from++)
{
if (*from == '/')
*to++= FN_LIBCHAR;
#ifdef FN_C_BEFORE_DIR_2
else if (*from == FN_C_BEFORE_DIR_2)
*to++= FN_C_BEFORE_DIR;
else if (*from == FN_C_AFTER_DIR_2)
*to++= FN_C_AFTER_DIR;
#endif
else
{
*to++= *from;
}
}
*to=0;
}
#else
/* This is ok even if to == from, becasue we need to cut the string */
size_t len= min(strlen(from),(size_t)(from_end-from));
void *ret= memmove(to, from, len);
assert(ret != NULL);
to+= len;
to[0]= '\0';
#endif
/* Add FN_LIBCHAR to the end of directory path */
if (to != to_org && (to[-1] != FN_LIBCHAR && to[-1] != FN_DEVCHAR))
{
*to++=FN_LIBCHAR;
*to=0;
}
return(to); /* Pointer to end of dir */
} /* convert_dirname */
|