Add line break resolving with styles preserving

docxtpl/__init__.py

@@ -27,6 +27,7 @@ import six
 import binascii
 import os
 import zipfile
+from functools import partial
 
 NEWLINE_XML = '</w:t><w:br/><w:t xml:space="preserve">'
 NEWPARAGRAPH_XML = '</w:t></w:r></w:p><w:p><w:r><w:t xml:space="preserve">'
@@ -234,8 +235,31 @@ class DocxTemplate(object):
                    .replace('}_}', '}}')
                    .replace('{_%', '{%')
                    .replace('%_}', '%}'))
+        dst_xml = self.resolve_listing(dst_xml)
         return dst_xml
 
+    def resolve_listing(self, xml):
+        xml = xml.replace('\n', NEWLINE_XML)
+        xml = xml.replace('\t', TAB_XML)
+        xml = xml.replace('\f', PAGE_BREAK)
+
+        def resolve_run(paragraph_properties, m):
+            run_properties = re.search(r'<w:rPr>.*</w:rPr>', m[0])
+            run_properties = run_properties[0] if run_properties else ''
+            return m[0].replace('\a', f'</w:t></w:r></w:p><w:p>{paragraph_properties}<w:r>{run_properties}<w:t>')
+
+        def resolve_paragraph(m):
+            paragraph_properties = re.search(r'<w:pPr>.*</w:pPr>', m[0])
+            paragraph_properties = paragraph_properties[0] if paragraph_properties else ''
+
+            p_resolve_run = partial(resolve_run, paragraph_properties)
+
+            return re.sub(r'<w:r(?: [^>]*)?>.*?</w:r>', p_resolve_run, m[0])
+
+        xml = re.sub(r'<w:p(?: [^>]*)?>.*?</w:p>', resolve_paragraph, xml)
+
+        return xml
+
     def build_xml(self, context, jinja_env=None):
         xml = self.get_xml()
         xml = self.patch_xml(xml)