do not rebuild the html if it is newer than the scratch file

1 files changed, 8 insertions, 4 deletions

diff --git a/generate-gallery.py b/generate-gallery.py
index 3600cb7..6fcdfa7 100755
--- a/generate-gallery.py
+++ b/generate-gallery.py
@@ -128,9 +128,14 @@ def package_projects(_indir: str, _outdir: str, all_projects: dict):
                     shutil.copyfile(infile, projectoutdir / project['Datei'])
                     continue
 
+                project['Datei'] = 'demo_output.html'
+
+                # Skip packaging if the result is newer than the input
+                if os.path.getmtime(infile) < os.path.getmtime(projectoutdir / 'demo_output.html'):
+                    continue
+
                 cmd = _cmd.format(infile='..' / infile, outdir='..' / projectoutdir)
                 subprocess.run(cmd, cwd='turbowarp-packager-cli', check=True, shell=True)
-                project['Datei'] = 'demo_output.html'
 
 
 def main():
@@ -147,17 +152,16 @@ def main():
                         help='output location of the generated HTML code')
     args = parser.parse_args()
 
-    env = Environment(loader=FileSystemLoader("templates"), autoescape=select_autoescape())
+    env = Environment(loader=FileSystemLoader('templates'), autoescape=select_autoescape())
 
     projects = load_projects(args.projects_dir)
-    # print(projects, file=sys.stderr)
 
     prepare_outputdir(args.output_dir, projects)
 
     if not args.no_packaging:
         package_projects(args.projects_dir, args.output_dir, projects)
 
-    template = env.get_template("index.html")
+    template = env.get_template('index.html')
     with open(pathlib.Path(args.output_dir) / 'index.html', 'w', encoding='utf-8') as outfile:
         print(template.render(projects=projects, **args.__dict__), file=outfile)