tlmgr dump-tlpdb -json possible

git-svn-id: svn://tug.org/texlive/trunk@45532 c570f23f-e606-0410-a88d-b1316a301751

2 files changed, 42 insertions, 0 deletions

diff --git a/Master/tlpkg/TeXLive/TLPDB.pm b/Master/tlpkg/TeXLive/TLPDB.pm
index 1dcdb3b91cb..b34650c84e3 100644
--- a/Master/tlpkg/TeXLive/TLPDB.pm
+++ b/Master/tlpkg/TeXLive/TLPDB.pm
@@ -28,6 +28,7 @@ C<TeXLive::TLPDB> -- A database of TeX Live Packages
   $tlpdb->from_file($filename);
   $tlpdb->writeout;
   $tlpdb->writeout(FILEHANDLE);
+  $tlpdb->as_json;
   $tlpdb->save;
   $tlpdb->media;
   $tlpdb->available_architectures();
@@ -466,6 +467,43 @@ sub writeout {
 
 =pod
 
+=item C<< $tlpdb->as_json >>
+
+The C<as_json> function returns a JSON UTF8 encoded representation of the
+database, that is a JSON array of packages. If the database is virtual,
+a JSON array where each element is a hash with two keys, C<tag> giving
+the tag of the sub-database, and C<tlpdb> giving the JSON of the database.
+
+=cut
+
+sub as_json {
+  my $self = shift;
+  my $ret;
+  if ($self->is_virtual) {
+    $ret = "[\n";
+    my $firsttlpdb = 1;
+    for my $k (keys %{$self->{'tlpdbs'}}) {
+      $ret .= ",\n" if (!$firsttlpdb);
+      $ret .= "{ \"tag\" : \"$k\", \"tlpdb\" : ";
+      $firsttlpdb = 0;
+      $ret .= $self->{'tlpdbs'}{$k}->as_json;
+      $ret .= " }";
+    }
+    $ret .= "\n]";
+  } else {
+    $ret = "[\n";
+    my $first = 1;
+    foreach (keys %{$self->{'tlps'}}) {
+      $ret .= ",\n" if (!$first);
+      $first = 0;
+      $ret .= $self->{'tlps'}{$_}->as_json;
+    }
+    $ret .= "\n]";
+  }
+}
+
+=pod
+
 =item C<< $tlpdb->save >>
 
 The C<save> functions saves the C<TLPDB> to the file which has been set
diff --git a/Master/tlpkg/TeXLive/TLPOBJ.pm b/Master/tlpkg/TeXLive/TLPOBJ.pm
index 77f2290e442..3e603bc99a3 100644
--- a/Master/tlpkg/TeXLive/TLPOBJ.pm
+++ b/Master/tlpkg/TeXLive/TLPOBJ.pm
@@ -1585,6 +1585,10 @@ or the filehandle if given:
 
 debugging function for comparison with C<tpm>/C<tlps>, will go away.
 
+=item C<as_json>
+
+returns the representation of the C<TLPOBJ> in JSON format.
+
 =item C<common_texmf_tree>
 
 if all files of the package are from the same texmf tree, this tree