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import os
import contextlib
from .. import documents
from .. import results
from .. import lists
from .xmlparser import node_types
def read_document_xml_element(element, numbering=None, content_types=None, relationships=None, docx_file=None):
reader = _create_reader(numbering=numbering, content_types=content_types, relationships=relationships, docx_file=docx_file)
return reader(element)
def _create_reader(numbering, content_types, relationships, docx_file):
_handlers = {}
_ignored_elements = set([
"w:bookmarkStart",
"w:bookmarkEnd",
"w:sectPr",
"w:proofErr",
"w:lastRenderedPageBreak",
"w:commentRangeStart",
"w:commentRangeEnd",
"w:commentReference",
"w:del",
"w:pPr",
"w:rPr",
])
def handler(name):
def add(func):
_handlers[name] = func
return func
return add
@handler("w:t")
def text(element):
return results.success(documents.Text(_inner_text(element)))
@handler("w:r")
def run(element):
properties = element.find_child_or_null("w:rPr")
style_name = properties \
.find_child_or_null("w:rStyle") \
.attributes.get("w:val")
is_bold = properties.find_child("w:b")
is_italic = properties.find_child("w:i")
return _read_xml_elements(element.children) \
.map(lambda children: documents.run(
children=children,
style_name=style_name,
is_bold=is_bold,
is_italic=is_italic,
))
@handler("w:p")
def paragraph(element):
properties = element.find_child_or_null("w:pPr")
style_name = properties \
.find_child_or_null("w:pStyle") \
.attributes.get("w:val")
numbering_properties = properties.find_child("w:numPr")
if numbering_properties is None:
numbering = None
else:
numbering = _read_numbering_properties(numbering_properties)
return _read_xml_elements(element.children) \
.map(lambda children: documents.paragraph(
children=children,
style_name=style_name,
numbering=numbering,
))
def _read_numbering_properties(element):
num_id = element.find_child("w:numId").attributes["w:val"]
level_index = element.find_child("w:ilvl").attributes["w:val"]
return numbering.find_level(num_id, level_index)
@handler("w:body")
def body(element):
return _read_xml_elements(element.children)
@handler("w:document")
def document(element):
body_element = _find_child(element, "w:body")
return _read_xml_elements(body_element.children) \
.map(documents.document)
@handler("w:tab")
def tab(element):
return results.success(documents.tab())
@handler("w:ins")
def ins(element):
return _read_xml_elements(element.children)
@handler("w:hyperlink")
def hyperlink(element):
relationship_id = element.attributes.get("r:id")
children_result = _read_xml_elements(element.children)
if relationship_id is None:
return children_result
else:
href = relationships[relationship_id].target
return children_result.map(lambda children: documents.hyperlink(href, children))
@handler("w:drawing")
def drawing(element):
return _read_xml_elements(element.children)
@handler("wp:inline")
@handler("wp:anchor")
def inline(element):
alt_text = element.find_child_or_null("wp:docPr").attributes.get("descr")
blips = element.find_children("a:graphic") \
.find_children("a:graphicData") \
.find_children("pic:pic") \
.find_children("pic:blipFill") \
.find_children("a:blip")
return _read_blips(blips, alt_text)
def _read_blips(blips, alt_text):
return results.combine(map(lambda blip: _read_blip(blip, alt_text), blips))
def _read_blip(element, alt_text):
relationship_id = element.attributes["r:embed"]
image_path = os.path.join("word", relationships[relationship_id].target)
content_type = content_types.find_content_type(image_path)
def open_image():
image_file = docx_file.open(image_path)
if hasattr(image_file, "__exit__"):
return image_file
else:
return contextlib.closing(image_file)
image = documents.image(alt_text=alt_text, content_type=content_type, open=open_image)
return results.success(image)
def read(element):
handler = _handlers.get(element.name)
if handler is None:
if element.name not in _ignored_elements:
warning = results.warning("An unrecognised element was ignored: {0}".format(element.name))
return results.Result(None, [warning])
else:
return results.success(None)
else:
return handler(element)
def _read_xml_elements(elements):
return results.combine(map(read, elements)) \
.map(lambda values: lists.collect(values))
return read
def _find(predicate, iterable):
for item in iterable:
if predicate(item):
return item
def _find_child(element, name):
return _find(lambda child: child.name == name, element.children)
def _inner_text(node):
if node.node_type == node_types.text:
return node.value
else:
return "".join(_inner_text(child) for child in node.children)
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