From fde26ec8de85c7e61aacadad497dceb341efd069 Mon Sep 17 00:00:00 2001
From: Alexandre Chataignon <alexandre@xouillet.info>
Date: Fri, 3 Mar 2017 06:37:11 +0100
Subject: [PATCH] Added setting to skip archive generation if archive file is
 already present

---
 sigal/gallery.py              | 4 ++++
 sigal/templates/sigal.conf.py | 1 +
 2 files changed, 5 insertions(+)

diff --git a/sigal/gallery.py b/sigal/gallery.py
index 143b1ca..9a6064e 100644
--- a/sigal/gallery.py
+++ b/sigal/gallery.py
@@ -482,6 +482,10 @@ class Album(UnicodeMixin):
 
         if zip_gallery and len(self) > 0:
             archive_path = join(self.dst_path, zip_gallery)
+            if self.settings.get('zip_skip_if_exists', False) and isfile(archive_path):
+                self.logger.debug("Archive %s already created, passing", archive_path)
+                return zip_gallery
+
             archive = zipfile.ZipFile(archive_path, 'w', allowZip64=True)
             attr = ('src_path' if self.settings['zip_media_format'] == 'orig'
                     else 'dst_path')
diff --git a/sigal/templates/sigal.conf.py b/sigal/templates/sigal.conf.py
index 1ec4abb..30b4fb4 100644
--- a/sigal/templates/sigal.conf.py
+++ b/sigal/templates/sigal.conf.py
@@ -187,6 +187,7 @@ ignore_files = []
 # contain all resized or original files (depending on `zip_media_format`).
 # zip_gallery = False   # False or 'archive.zip'
 # zip_media_format = 'resized'  # 'resized' or 'orig'
+# zip_skip_if_exists = false # Skip archive generation if archive is already present. Warning: new photos in an album won't be added to archive
 
 # Specify a different locale. If set to '', the default locale is used.
 # locale = ''