[vala/0.42] valadoc/html: Skip package dependency if target directory already exists

[Rico Tzschichholz <ricotz src gnome org>]

commit be01b3de8abbd007fcb9aa5ffb958766d80fcc90
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Nov 14 22:12:54 2018 +0100

    valadoc/html: Skip package dependency if target directory already exists
    
    Simply assume we already generated the documentation for this dependency
    in a previous invocation running with --deps.

 valadoc/doclets/html/doclet.vala | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/valadoc/doclets/html/doclet.vala b/valadoc/doclets/html/doclet.vala
index b2dde98a5..1bb21e94d 100644
--- a/valadoc/doclets/html/doclet.vala
+++ b/valadoc/doclets/html/doclet.vala
@@ -109,6 +109,10 @@ public class Valadoc.Html.Doclet : Valadoc.Html.BasicDoclet {
                string pkg_name = package.name;
                string path = GLib.Path.build_filename ( this.settings.path, pkg_name );
 
+               if (package.is_package && FileUtils.test (path, FileTest.EXISTS)) {
+                       return;
+               }
+
                var rt = DirUtils.create (path, 0777);
                rt = DirUtils.create (GLib.Path.build_filename (path, "img"), 0777);