+my $verbose = 2;
+my $ignore_failure = 0;
+my $want_remote_repo = 0;
+my $checked_out_flag = 0;
+
+my %tags;
+
+# Figure out where to get the other repositories from.
+sub getrepo {
+ my $basedir = ".";
+ my $repo = $defaultrepo || `cat $basedir/_darcs/prefs/defaultrepo`;
+ chomp $repo;
+
+ my $repo_base;
+ my $checked_out_tree;
+
+ if ($repo =~ /^...*:/) {
+ # HTTP or SSH
+ # Above regex says "at least two chars before the :", to avoid
+ # catching Win32 drives ("C:\").
+ $repo_base = $repo;
+
+ # --checked-out is needed if you want to use a checked-out repo
+ # over SSH or HTTP
+ if ($checked_out_flag) {
+ $checked_out_tree = 1;
+ } else {
+ $checked_out_tree = 0;
+ }
+
+ # Don't drop the last part of the path if specified with -r, as
+ # it expects repos of the form:
+ #
+ # http://darcs.haskell.org
+ #
+ # rather than
+ #
+ # http://darcs.haskell.org/ghc
+ #
+ if (!$defaultrepo) {
+ $repo_base =~ s#/[^/]+/?$##;
+ }
+ }
+ elsif ($repo =~ /^\/|\.\.\/|.:(\/|\\)/) {
+ # Local filesystem, either absolute or relative path
+ # (assumes a checked-out tree):
+ $repo_base = $repo;
+ $checked_out_tree = 1;
+ }
+ else {
+ die "Couldn't work out repo";
+ }
+
+ return $repo_base, $checked_out_tree;
+}
+
+sub message {
+ if ($verbose >= 2) {
+ print "@_\n";
+ }
+}
+
+sub warning {
+ if ($verbose >= 1) {
+ print "warning: @_\n";
+ }
+}
+
+sub darcs {
+ message "== running darcs @_";
+ system ("darcs", @_) == 0
+ or $ignore_failure
+ or die "darcs failed: $?";
+}
+
+sub darcsall {
+ my $localpath;
+ my $remotepath;
+ my $path;
+ my $tag;
+ my @repos;
+
+ my ($repo_base, $checked_out_tree) = getrepo();
+
+ open IN, "< packages" or die "Can't open packages file";
+ @repos = <IN>;
+ close IN;
+
+ foreach (@repos) {
+ chomp;
+ if (/^([^# ]+) +(?:([^ ]+) +)?([^ ]+) +([^ ]+)$/) {
+ $localpath = $1;
+ $tag = defined($2) ? $2 : "";
+ $remotepath = $3;
+
+ if ($checked_out_tree) {
+ $path = "$repo_base/$localpath";
+ }
+ else {
+ $path = "$repo_base/$remotepath";
+ }
+
+ if (-d "$localpath/_darcs") {
+ if ($want_remote_repo) {
+ darcs (@_, "--repodir", $localpath, $path);
+ } else {
+ darcs (@_, "--repodir", $localpath);
+ }
+ }
+ elsif ($tag eq "") {
+ message "== Required repo $localpath is missing! Skipping";
+ }
+ else {
+ message "== $localpath repo not present; skipping";
+ }
+ }
+ elsif (! /^(#.*)?$/) {
+ die "Bad line: $_";
+ }
+ }
+}
+
+sub darcsget {
+ my $r_flags;
+ my $localpath;
+ my $remotepath;
+ my $path;
+ my $tag;
+ my @repos;
+
+ my ($repo_base, $checked_out_tree) = getrepo();
+
+ if (! grep /(?:--complete|--partial)/, @_) {
+ warning("adding --partial, to override use --complete");
+ $r_flags = [@_, "--partial"];
+ }
+ else {
+ $r_flags = \@_;
+ }
+
+ open IN, "< packages" or die "Can't open packages file";
+ @repos = <IN>;
+ close IN;
+
+ foreach (@repos) {
+ chomp;
+ if (/^([^ ]+) +(?:([^ ]+) +)?([^ ]+) +([^ ]+)$/) {
+ $localpath = $1;
+ $tag = defined($2) ? $2 : "";
+ $remotepath = $3;
+
+ if ($checked_out_tree) {
+ $path = "$repo_base/$localpath";
+ }
+ else {
+ $path = "$repo_base/$remotepath";
+ }
+
+ if (($tag eq "") || defined($tags{$tag})) {
+ if (-d $localpath) {
+ warning("$localpath already present; omitting");
+ }
+ else {
+ darcs (@$r_flags, $path, $localpath);
+ }
+ }
+ }
+ elsif (! /^(#.*)?$/) {
+ die "Bad line: $_";
+ }
+ }