From 05d9ac1031dcf83c6d99fa2218ee45a6d7b4d746 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sun, 3 Jul 2016 12:16:50 +0100
Subject: Add reader for comments.xml

---
 mammoth/documents.py             |  7 +++++++
 mammoth/docx/comments_xml.py     | 19 +++++++++++++++++++
 tests/docx/comments_xml_tests.py | 18 ++++++++++++++++++
 3 files changed, 44 insertions(+)
 create mode 100644 mammoth/docx/comments_xml.py
 create mode 100644 tests/docx/comments_xml_tests.py

diff --git a/mammoth/documents.py b/mammoth/documents.py
index 36e3458..ea376d4 100644
--- a/mammoth/documents.py
+++ b/mammoth/documents.py
@@ -173,4 +173,11 @@ class NoteReference(Element):
 note_reference = NoteReference
 
 
+@cobble.data
+class Comment(object):
+    comment_id = cobble.field()
+    body = cobble.field()
+
+comment = Comment
+
 ElementVisitor = cobble.visitor(Element)
diff --git a/mammoth/docx/comments_xml.py b/mammoth/docx/comments_xml.py
new file mode 100644
index 0000000..9a92552
--- /dev/null
+++ b/mammoth/docx/comments_xml.py
@@ -0,0 +1,19 @@
+from .. import lists
+from .. import documents
+from .. import results
+
+
+def create_comments_reader(body_reader):
+    def read_comments_xml_element(element):
+        comment_elements = element.find_children("w:comment")
+        return results.combine(lists.map(_read_comment_element, comment_elements))
+
+
+    def _read_comment_element(element):
+        return body_reader.read_all(element.children).map(lambda body:
+            documents.comment(
+                comment_id=element.attributes["w:id"],
+                body=body
+            ))
+
+    return read_comments_xml_element
diff --git a/tests/docx/comments_xml_tests.py b/tests/docx/comments_xml_tests.py
new file mode 100644
index 0000000..2970922
--- /dev/null
+++ b/tests/docx/comments_xml_tests.py
@@ -0,0 +1,18 @@
+from nose.tools import istest, assert_equal
+
+from mammoth import documents
+from mammoth.docx.xmlparser import element as xml_element
+from mammoth.docx.comments_xml import create_comments_reader
+from mammoth.docx import body_xml
+
+
+@istest
+def id_and_body_of_comment_is_read():
+    body = [xml_element("w:p")]
+    comments = create_comments_reader(body_xml.reader())(xml_element("w:comments", {}, [
+        xml_element("w:comment", {"w:id": "1"}, body),
+    ]))
+    assert_equal(1, len(comments.value))
+    assert_equal(comments.value[0].body, [documents.paragraph(children=[])])
+    assert_equal("1", comments.value[0].comment_id)
+
-- 
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