From 9ad760db92a57b76fc2e131e11772c3694ce93f4 Mon Sep 17 00:00:00 2001
From: Thibaut Cuvelier <tcuvelier@lyx.org>
Date: Thu, 28 Jan 2021 04:57:57 +0100
Subject: [PATCH] docbook2epub.

---
 lib/scripts/docbook2epub.py | 65 +++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 lib/scripts/docbook2epub.py

diff --git a/lib/scripts/docbook2epub.py b/lib/scripts/docbook2epub.py
new file mode 100644
index 0000000000..a75c45802d
--- /dev/null
+++ b/lib/scripts/docbook2epub.py
@@ -0,0 +1,65 @@
+# -*- coding: utf-8 -*-
+
+# file docbook2epub.py
+# This file is part of LyX, the document processor.
+# Licence details can be found in the file COPYING.
+#
+# \author Thibaut Cuvelier
+#
+# Full author contact details are available in file CREDITS
+
+# Usage:
+#   python docbook2epub.py in.docbook out.epub
+
+from __future__ import print_function
+
+import os
+import shutil
+import sys
+import tempfile
+import zipfile
+import glob
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        sys.exit(1)
+    own_path, java_path, input, output = sys.argv
+    script_folder = os.path.dirname(own_path) + '/../'
+
+    print('Generating ePub:')
+    print(own_path)
+    print(input)
+    print(output)
+
+    output_dir = tempfile.mkdtemp().replace('\\', '/')
+    # os.chmod(output_dir, 0o777)
+    print('Temporary output directory:')
+    print(output_dir)
+
+    # Start the XSLT transformation.
+    xslt = script_folder + 'docbook/epub3/chunk.xsl'
+    saxon_jar = script_folder + 'scripts/saxon6.5.5.jar'
+    saxon_params = 'base.dir=%s' % output_dir
+    command = '"' + java_path + '" -jar "' + saxon_jar + '" ' + input + ' ' + xslt + ' ' + saxon_params
+
+    print('XSLT style sheet to use:')
+    print(xslt)
+    print('Command to execute:')
+    print(command)
+
+    if os.system('"' + command + '"') != 0:
+        print('docbook2epub fails')
+        shutil.rmtree(output_dir, ignore_errors=True)
+        sys.exit(1)
+
+    print('Generated ePub contents.')
+
+    # TODO: Copy the assets to the OEBPS/images/.
+
+    # Create the actual ePub file.
+    with zipfile.ZipFile(output, 'w', zipfile.ZIP_DEFLATED) as zip:
+        for file in glob.glob(output_dir + '/**/*', recursive=True):
+            zip.write(file, os.path.relpath(file, output_dir), compress_type=zipfile.ZIP_STORED)
+
+    shutil.rmtree(output_dir)
+    print('Generated ePub.')