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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/* msd_dir.c - portable directory routines
Copyright (C) 1990 by Thorsten Ohl, td12@ddagsi3.bitnet
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; either version 1, or (at your option)
any later version.
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. */
/* Everything non trivial in this code is from: @(#)msd_dir.c 1.4
87/11/06. A public domain implementation of BSD directory routines
for MS-DOS. Written by Michael Rendell ({uunet,utai}michael@garfield),
August 1897 */
#include <io.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dos.h>
#include <ndir.h>
#include "xalloc.h"
static void free_dircontents (struct _dircontents *);
/* find ALL files! */
#define ATTRIBUTES (_A_RDONLY | _A_HIDDEN | _A_SYSTEM | _A_SUBDIR)
DIR *
opendir (const char *name)
{
struct _finddata_t find_buf;
DIR *dirp;
struct _dircontents *dp;
char name_buf[_MAX_PATH + 1];
char *slash = "";
long hFile;
if (!name)
name = "";
else if (*name)
{
const char *s;
int l = strlen (name);
s = name + l - 1;
if ( !(l == 2 && *s == ':') && *s != '\\' && *s != '/')
slash = "/"; /* save to insert slash between path and "*.*" */
}
strcat (strcat (strcpy (name_buf, name), slash), "*.*");
dirp = xmalloc (sizeof (DIR));
if (!dirp) return NULL;
dirp->dd_loc = 0;
dirp->dd_contents = dirp->dd_cp = NULL;
if ((hFile = _findfirst (name_buf, &find_buf)) < 0)
{
free (dirp);
return NULL;
}
do
{
dp = xmalloc (sizeof (struct _dircontents));
if (!dp)
{
free_dircontents (dirp->dd_contents);
return NULL;
}
dp->_d_entry = xmalloc (strlen (find_buf.name) + 1);
if (!dp->_d_entry)
{
free (dp);
free_dircontents (dirp->dd_contents);
return NULL;
}
if (dirp->dd_contents)
dirp->dd_cp = dirp->dd_cp->_d_next = dp;
else
dirp->dd_contents = dirp->dd_cp = dp;
strcpy (dp->_d_entry, find_buf.name);
dp->_d_next = NULL;
} while (!_findnext (hFile, &find_buf));
dirp->dd_cp = dirp->dd_contents;
_findclose(hFile);
return dirp;
}
void
closedir (DIR *dirp)
{
free_dircontents (dirp->dd_contents);
free (dirp);
}
struct direct *
readdir (DIR *dirp)
{
static struct direct dp;
if (!dirp->dd_cp) return NULL;
dp.d_namlen = dp.d_reclen =
strlen (strcpy (dp.d_name, dirp->dd_cp->_d_entry));
#if 0 /* JB */
strlwr (dp.d_name); /* JF */
#endif
dp.d_ino = 0;
dirp->dd_cp = dirp->dd_cp->_d_next;
dirp->dd_loc++;
return &dp;
}
void
seekdir (DIR *dirp, long off)
{
long i = off;
struct _dircontents *dp;
if (off < 0)
return;
for (dp = dirp->dd_contents; --i >= 0 && dp; dp = dp->_d_next)
;
dirp->dd_loc = off - (i + 1);
dirp->dd_cp = dp;
}
long
telldir (DIR *dirp)
{
return dirp->dd_loc;
}
/* Garbage collection */
static void
free_dircontents (struct _dircontents *dp)
{
struct _dircontents *odp;
while (dp)
{
if (dp->_d_entry)
free (dp->_d_entry);
dp = (odp = dp)->_d_next;
free (odp);
}
}
#ifdef TEST
void main (int argc, char *argv[]);
void
main (int argc, char *argv[])
{
static DIR *directory;
struct direct *entry = NULL;
char *name = "";
if (argc > 1)
name = argv[1];
directory = opendir (name);
if (!directory)
{
fprintf (stderr, "can't open directory `%s'.\n", name);
exit (2);
}
while (entry = readdir (directory))
printf ("> %s\n", entry->d_name);
printf ("done.\n");
}
#endif /* TEST */
/*
* Local Variables:
* mode:C
* ChangeLog:ChangeLog
* compile-command:make
* End:
*/
|
