1 files changed, 118 insertions, 0 deletions
diff --git a/src/lib/Gitolite/Conf/Explode.pm b/src/lib/Gitolite/Conf/Explode.pm
new file mode 100644
index 0000000..cf89620
--- /dev/null
+++ b/src/lib/Gitolite/Conf/Explode.pm
@@ -0,0 +1,118 @@
+package Gitolite::Conf::Explode;
+
+# include/subconf processor
+# ----------------------------------------------------------------------
+
+@EXPORT = qw(
+  explode
+);
+
+use Exporter 'import';
+
+use Gitolite::Rc;
+use Gitolite::Common;
+
+use strict;
+use warnings;
+
+# ----------------------------------------------------------------------
+
+# 'seen' for include/subconf files
+my %included = ();
+# 'seen' for group names on LHS
+my %prefixed_groupname = ();
+
+sub explode {
+    trace( 3, @_ );
+    my ( $file, $subconf, $out ) = @_;
+
+    # seed the 'seen' list if it's empty
+    $included{ device_inode("gitolite.conf") }++ unless %included;
+
+    my $fh = _open( "<", $file );
+    while (<$fh>) {
+        my $line = cleanup_conf_line($_);
+        next unless $line =~ /\S/;
+
+        # subst %HOSTNAME word if rc defines a hostname, else leave as is
+        $line =~ s/%HOSTNAME\b/$rc{HOSTNAME}/g if $rc{HOSTNAME};
+
+        $line = prefix_groupnames( $line, $subconf ) if $subconf ne 'master';
+
+        if ( $line =~ /^(include|subconf) (?:(\S+) )?(\S.+)$/ ) {
+            incsub( $1, $2, $3, $subconf, $out );
+        } else {
+            # normal line, send it to the callback function
+            push @{$out}, "# $file $.";
+            push @{$out}, $line;
+        }
+    }
+}
+
+sub incsub {
+    my $is_subconf = ( +shift eq 'subconf' );
+    my ( $new_subconf, $include_glob, $current_subconf, $out ) = @_;
+
+    _die "subconf '$current_subconf' attempting to run 'subconf'\n" if $is_subconf and $current_subconf ne 'master';
+
+    _die "invalid include/subconf file/glob '$include_glob'"
+      unless $include_glob =~ /^"(.+)"$/
+      or $include_glob =~ /^'(.+)'$/;
+    $include_glob = $1;
+
+    trace( 3, $is_subconf, $include_glob );
+
+    for my $file ( glob($include_glob) ) {
+        _warn("included file not found: '$file'"), next unless -f $file;
+        _die "invalid include/subconf filename '$file'" unless $file =~ m(([^/]+).conf$);
+        my $basename = $1;
+
+        next if already_included($file);
+
+        if ($is_subconf) {
+            push @{$out}, "subconf " . ( $new_subconf || $basename );
+            explode( $file, ( $new_subconf || $basename ), $out );
+            push @{$out}, "subconf $current_subconf";
+        } else {
+            explode( $file, $current_subconf, $out );
+        }
+    }
+}
+
+sub prefix_groupnames {
+    my ( $line, $subconf ) = @_;
+
+    my $lhs = '';
+    # save 'foo' if it's an '@foo = list' line
+    $lhs = $1 if $line =~ /^@(\S+) = /;
+    # prefix all @groups in the line
+    $line =~ s/(^| )(@\S+)(?= |$)/ $1 . ($prefixed_groupname{$subconf}{$2} || $2) /ge;
+    # now prefix the LHS and store it if needed
+    if ($lhs) {
+        $line =~ s/^@\S+ = /"\@$subconf.$lhs = "/e;
+        $prefixed_groupname{$subconf}{"\@$lhs"} = "\@$subconf.$lhs";
+        trace( 3, "prefixed_groupname.$subconf.\@$lhs = \@$subconf.$lhs" );
+    }
+
+    return $line;
+}
+
+sub already_included {
+    my $file = shift;
+
+    my $file_id = device_inode($file);
+    return 0 unless $included{$file_id}++;
+
+    _warn("$file already included");
+    trace( 3, "$file already included" );
+    return 1;
+}
+
+sub device_inode {
+    my $file = shift;
+    trace( 3, $file, ( stat $file )[ 0, 1 ] );
+    return join( "/", ( stat $file )[ 0, 1 ] );
+}
+
+1;
+