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
|
/*
\funcref{fun\_chdir}{void fun\_chdir ()}
{}
{}
{}
{}
{funchdir.c}
{
This function expects a string to {\em chdir} to as second-but-last
argument on the stack. The last argument is the mode, {\em
P\_CHECK} or {\em P\_NOCHECK}. If the directory name is a non-null
string, then the current working directory is set to the indicated
path. If the requested directory is an empty string, then a
change-dir is performed to the startup directory.
Modifier {\em P\_CHECK} causes this function to abort upon failure.
Return register {\em reg} is set to type {\em e\_str}. The value of
the return register is set to the obtained working directory. This
may not be the requested directory if the {\em chdir} fails.
}
*/
#include "icm-exec.h"
void fun_chdir ()
{
register char
*dir,
*last;
register int
mode; /* mode of operation */
char
newdir [_MAX_PATH];
static char
dirsep [2] = { DIRSEP, '\0' };
mode = stack [sp].vu.intval; /* get mode */
dir = xstrdup (stack [sp - 1].vu.i->ls.str); /* duplicate dest */
if (! *dir) /* empty dest: */
dir = orgdir; /* change to org dir */
last = dir + strlen (dir) - 1; /* remove dir */
if ( last != dir && /* separator */
(*last == '\\' || *last == '/') &&
*(last - 1) != ':'
)
*last = '\0';
if (chdir (dir) && P_CHECKMODE (mode)) /* go to dir */
error ("chdir - can't change dir to %s", dir); /* or quit if */
/* P_CHECK is on */
xrealloc (dir, 0); /* free duplicate */
getcwd (newdir, _MAX_PATH); /* return value: */
if (newdir [strlen (newdir) - 1] != DIRSEP) /* cwd */
strcat (newdir, dirsep);
reg = newvar (e_str);
reg.vu.i->ls.str = xstrdup (newdir);
}
|
