blob: 4925410dd1ebed4c279a124a25557fd4c767cd83 (
plain)
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
|
package Git::SVN::Utils;
use strict;
use warnings;
use SVN::Core;
use base qw(Exporter);
our @EXPORT_OK = qw(
fatal
can_compress
canonicalize_path
canonicalize_url
);
=head1 NAME
Git::SVN::Utils - utility functions used across Git::SVN
=head1 SYNOPSIS
use Git::SVN::Utils qw(functions to import);
=head1 DESCRIPTION
This module contains functions which are useful across many different
parts of Git::SVN. Mostly it's a place to put utility functions
rather than duplicate the code or have classes grabbing at other
classes.
=head1 FUNCTIONS
All functions can be imported only on request.
=head3 fatal
fatal(@message);
Display a message and exit with a fatal error code.
=cut
# Note: not certain why this is in use instead of die. Probably because
# the exit code of die is 255? Doesn't appear to be used consistently.
sub fatal (@) { print STDERR "@_\n"; exit 1 }
=head3 can_compress
my $can_compress = can_compress;
Returns true if Compress::Zlib is available, false otherwise.
=cut
my $can_compress;
sub can_compress {
return $can_compress if defined $can_compress;
return $can_compress = eval { require Compress::Zlib; };
}
=head3 canonicalize_path
my $canoncalized_path = canonicalize_path($path);
Converts $path into a canonical form which is safe to pass to the SVN
API as a file path.
=cut
# Turn foo/../bar into bar
sub _collapse_dotdot {
my $path = shift;
1 while $path =~ s{/[^/]+/+\.\.}{};
1 while $path =~ s{[^/]+/+\.\./}{};
1 while $path =~ s{[^/]+/+\.\.}{};
return $path;
}
sub canonicalize_path {
my ($path) = @_;
my $dot_slash_added = 0;
if (substr($path, 0, 1) ne "/") {
$path = "./" . $path;
$dot_slash_added = 1;
}
# File::Spec->canonpath doesn't collapse x/../y into y (for a
# good reason), so let's do this manually.
$path =~ s#/+#/#g;
$path =~ s#/\.(?:/|$)#/#g;
$path = _collapse_dotdot($path);
$path =~ s#/$##g;
$path =~ s#^\./## if $dot_slash_added;
$path =~ s#^/##;
$path =~ s#^\.$##;
return $path;
}
=head3 canonicalize_url
my $canonicalized_url = canonicalize_url($url);
Converts $url into a canonical form which is safe to pass to the SVN
API as a URL.
=cut
sub canonicalize_url {
my $url = shift;
# The 1.7 way to do it
if ( defined &SVN::_Core::svn_uri_canonicalize ) {
return SVN::_Core::svn_uri_canonicalize($url);
}
# There wasn't a 1.6 way to do it, so we do it ourself.
else {
return _canonicalize_url_ourselves($url);
}
}
sub _canonicalize_url_ourselves {
my ($url) = @_;
$url =~ s#^([^:]+://[^/]*/)(.*)$#$1 . canonicalize_path($2)#e;
return $url;
}
1;
|
