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
|
/*
* path.c -- return a pathname
*
* $Id: path.c,v 1.4 2008/04/05 18:41:38 pm215 Exp $
*
* This code is Copyright (c) 2002, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
* complete copyright information.
*/
#include <h/mh.h>
#define CWD "./"
#define NCWD (sizeof(CWD) - 1)
#define DOT "."
#define DOTDOT ".."
#define PWD "../"
#define NPWD (sizeof(PWD) - 1)
static char *pwds;
/*
* static prototypes
*/
static char *expath(char *,int);
static void compath(char *);
char *
pluspath(char *name)
{
return path(name + 1, *name == '+' ? TFOLDER : TSUBCWF);
}
char *
path(char *name, int flag)
{
register char *cp, *ep;
if ((cp = expath (name, flag))
&& (ep = cp + strlen (cp) - 1) > cp
&& *ep == '/')
*ep = '\0';
return cp;
}
static char *
expath (char *name, int flag)
{
register char *cp, *ep;
char buffer[BUFSIZ];
if (flag == TSUBCWF) {
snprintf (buffer, sizeof(buffer), "%s/%s", getfolder (1), name);
name = m_mailpath (buffer);
compath (name);
snprintf (buffer, sizeof(buffer), "%s/", m_maildir (""));
if (ssequal (buffer, name)) {
cp = name;
name = getcpy (name + strlen (buffer));
free (cp);
}
flag = TFOLDER;
}
if (*name == '/'
|| (flag == TFOLDER
&& (strncmp (name, CWD, NCWD)
&& strcmp (name, DOT)
&& strcmp (name, DOTDOT)
&& strncmp (name, PWD, NPWD))))
return getcpy (name);
if (pwds == NULL)
pwds = pwd ();
if (strcmp (name, DOT) == 0 || strcmp (name, CWD) == 0)
return getcpy (pwds);
ep = pwds + strlen (pwds);
if ((cp = strrchr(pwds, '/')) == NULL)
cp = ep;
else
if (cp == pwds)
cp++;
if (strncmp (name, CWD, NCWD) == 0)
name += NCWD;
if (strcmp (name, DOTDOT) == 0 || strcmp (name, PWD) == 0) {
snprintf (buffer, sizeof(buffer), "%.*s", (int)(cp - pwds), pwds);
return getcpy (buffer);
}
if (strncmp (name, PWD, NPWD) == 0)
name += NPWD;
else
cp = ep;
snprintf (buffer, sizeof(buffer), "%.*s/%s", (int)(cp - pwds), pwds, name);
return getcpy (buffer);
}
static void
compath (char *f)
{
register char *cp, *dp;
if (*f != '/')
return;
for (cp = f; *cp;)
if (*cp == '/') {
switch (*++cp) {
case 0:
if (--cp > f)
*cp = '\0';
break;
case '/':
for (dp = cp; *dp == '/'; dp++)
continue;
strcpy (cp--, dp);
continue;
case '.':
if (strcmp (cp, DOT) == 0) {
if (cp > f + 1)
cp--;
*cp = '\0';
break;
}
if (strcmp (cp, DOTDOT) == 0) {
for (cp -= 2; cp > f; cp--)
if (*cp == '/')
break;
if (cp <= f)
cp = f + 1;
*cp = '\0';
break;
}
if (strncmp (cp, PWD, NPWD) == 0) {
for (dp = cp - 2; dp > f; dp--)
if (*dp == '/')
break;
if (dp <= f)
dp = f;
strcpy (dp, cp + NPWD - 1);
cp = dp;
continue;
}
if (strncmp (cp, CWD, NCWD) == 0) {
strcpy (cp - 1, cp + NCWD - 1);
cp--;
continue;
}
continue;
default:
cp++;
continue;
}
break;
}
else
cp++;
}
|
