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git/perl/Git/SVN/GlobSpec.pm
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package Git::SVN::GlobSpec; | |
use strict; | |
use warnings; | |
sub new { | |
my ($class, $glob, $pattern_ok) = @_; | |
my $re = $glob; | |
$re =~ s!/+$!!g; # no need for trailing slashes | |
my (@left, @right, @patterns); | |
my $state = "left"; | |
my $die_msg = "Only one set of wildcards " . | |
"(e.g. '*' or '*/*/*') is supported: $glob\n"; | |
for my $part (split(m|/|, $glob)) { | |
if ($pattern_ok && $part =~ /[{}]/ && | |
$part !~ /^\{[^{}]+\}/) { | |
die "Invalid pattern in '$glob': $part\n"; | |
} | |
my $nstars = $part =~ tr/*//; | |
if ($nstars > 1) { | |
die "Only one '*' is allowed in a pattern: '$part'\n"; | |
} | |
if ($part =~ /(.*)\*(.*)/) { | |
die $die_msg if $state eq "right"; | |
my ($l, $r) = ($1, $2); | |
$state = "pattern"; | |
my $pat = quotemeta($l) . '[^/]*' . quotemeta($r); | |
push(@patterns, $pat); | |
} elsif ($pattern_ok && $part =~ /^\{(.*)\}$/) { | |
die $die_msg if $state eq "right"; | |
$state = "pattern"; | |
my $p = quotemeta($1); | |
$p =~ s/\\,/|/g; | |
push(@patterns, "(?:$p)"); | |
} else { | |
if ($state eq "left") { | |
push(@left, $part); | |
} else { | |
push(@right, $part); | |
$state = "right"; | |
} | |
} | |
} | |
my $depth = @patterns; | |
if ($depth == 0) { | |
die "One '*' is needed in glob: '$glob'\n"; | |
} | |
my $left = join('/', @left); | |
my $right = join('/', @right); | |
$re = join('/', @patterns); | |
$re = join('\/', | |
grep(length, quotemeta($left), | |
"($re)(?=/|\$)", | |
quotemeta($right))); | |
my $left_re = qr/^\/\Q$left\E(\/|$)/; | |
bless { left => $left, right => $right, left_regex => $left_re, | |
regex => qr/$re/, glob => $glob, depth => $depth }, $class; | |
} | |
sub full_path { | |
my ($self, $path) = @_; | |
return (length $self->{left} ? "$self->{left}/" : '') . | |
$path . (length $self->{right} ? "/$self->{right}" : ''); | |
} | |
1; |