186
|
1 |
#!/usr/bin/perl
|
|
2 |
|
|
3 |
use strict;
|
|
4 |
use Getopt::Long;
|
|
5 |
|
|
6 |
my $link;
|
|
7 |
my $target;
|
|
8 |
my $help;
|
|
9 |
my $force = 0;
|
|
10 |
|
|
11 |
sub usage($);
|
|
12 |
sub help();
|
|
13 |
sub usage_error();
|
|
14 |
|
|
15 |
my %optmap = ( 'link' => \$link,
|
|
16 |
'target' => \$target,
|
|
17 |
'force' => \$force,
|
|
18 |
'help' => \$help);
|
|
19 |
|
|
20 |
GetOptions(\%optmap,
|
|
21 |
'link=s',
|
|
22 |
'target=s',
|
|
23 |
'force!',
|
|
24 |
'help!')
|
|
25 |
or usage_error();
|
|
26 |
|
|
27 |
if ($help) {
|
|
28 |
help();
|
|
29 |
}
|
|
30 |
|
|
31 |
usage_error(), unless (defined($link) && defined($target));
|
|
32 |
|
|
33 |
my $junction_help = `junction /?`;
|
|
34 |
die("Need command \"junction\". Not found\n"), if ($junction_help =~ /is not recognised/);
|
|
35 |
die("Directory \"$target\" not found\n"), unless -d "$target";
|
|
36 |
|
|
37 |
if ( -e "$link") {
|
|
38 |
print("\"$link\" already exists. ");
|
|
39 |
if (!$force) {
|
|
40 |
my $choice;
|
|
41 |
while($choice ne 'y' and $choice ne 'n') {
|
|
42 |
print "Delete? (y/n)? ";
|
|
43 |
$choice = <STDIN>;
|
|
44 |
chomp($choice);
|
|
45 |
$choice = lc($choice);
|
|
46 |
}
|
|
47 |
$force = $choice eq 'y';
|
|
48 |
}
|
|
49 |
if ($force) {
|
|
50 |
system("junction -d \"$link\" > nul");
|
|
51 |
if ($?) {
|
|
52 |
die("Cannot delete \"$link\": $!\n");
|
|
53 |
}
|
|
54 |
else {
|
|
55 |
print "Deleted \"$link\"\n";
|
|
56 |
}
|
|
57 |
}
|
|
58 |
}
|
|
59 |
|
|
60 |
system("junction \"$link\" \"$target\" > nul");
|
|
61 |
if ($?) {
|
|
62 |
die("Cannot cteate junction \"$link\" -> \"$target\": $!\n");
|
|
63 |
}
|
|
64 |
else {
|
|
65 |
print("Created junction \"$link\" -> \"$target\"\n");
|
|
66 |
}
|
|
67 |
exit 0;
|
|
68 |
|
|
69 |
sub usage($)
|
|
70 |
{
|
|
71 |
my $error = shift;
|
|
72 |
my $fh = $error == 0 ? *STDOUT : *STDERR;
|
|
73 |
print $fh "make_junction.pl\n" .
|
|
74 |
"Create a Windows junction (a.k.a symbolic link)\n" .
|
|
75 |
"usage:\n" .
|
|
76 |
" make_junction.pl --help\n" .
|
|
77 |
" make_junction.pl --link=LINKDIR --target=TARGDIR\n " .
|
|
78 |
"options:\n" .
|
|
79 |
" --help Display this help and exit\n" .
|
|
80 |
" --link=LINKDIR LINKDIR specifies the junction to be created. Last component is the junction. The rest must exist\n" .
|
|
81 |
" --target=TARGDIR TARGDIR is directory to which the junction will point.\n";
|
|
82 |
exit $error;
|
|
83 |
}
|
|
84 |
|
|
85 |
sub help()
|
|
86 |
{
|
|
87 |
usage(0);
|
|
88 |
}
|
|
89 |
|
|
90 |
sub usage_error()
|
|
91 |
{
|
|
92 |
usage(1);
|
|
93 |
}
|
|
94 |
|
|
95 |
# EOF
|
|
96 |
|