def delete_slide(loader: Loader,
slide_index: int,
do_garbage_collection: bool = True):
slide_filepath = make_slide_path(slide_index)
slide_rels_filepath = make_rels_path(slide_filepath)
presentation_rels_filepath = make_rels_path(PRESENTATION_PATH)
# delete slide xml
try:
loader.delete_file(slide_filepath)
except KeyError:
return
loader.delete_file(slide_rels_filepath)
# delete relations
if do_garbage_collection:
delete_unused_media(loader=loader)
last_pptx_slide_index = find_last_index_of_content(loader=loader,
content_name='slide')
for i in range(1, last_pptx_slide_index + 1):
delete_mention_in_slide(loader=loader,
slide_id=i,
slide_id_to_delete=slide_index)
# update presentation xml
slide_relation_id = find_relation_id_in_rels(
loader=loader,
rels_filepath=presentation_rels_filepath,
filepath=slide_filepath)
assert slide_relation_id is not None
delete_mention_in_rels(loader=loader,
rels_filepath=presentation_rels_filepath,
relation_id=slide_relation_id)
delete_slide_mention_in_presentation(loader=loader,
relation_id=slide_relation_id)
# update content type xml
delete_mention_in_content_type(loader=loader, filepath=slide_filepath)
def delete_mention_in_slide(loader: Loader, slide_id: int,
slide_id_to_delete: int):
slide_filepath_to_delete = f'slide{slide_id_to_delete}.xml'
slide_filepath = make_slide_path(slide_id)
slide_rels_filepath = make_rels_path(slide_filepath)
r_id = find_relation_id_in_rels(loader=loader,
rels_filepath=slide_rels_filepath,
filepath=slide_filepath_to_delete)
if r_id is None:
return
delete_shapes_with_relation(loader=loader,
slide_filepath=slide_filepath,
r_id_to_delete=r_id)
delete_mention_in_rels(loader=loader,
rels_filepath=slide_rels_filepath,
relation_id=r_id)
def _slide_layout_path(self) -> str:
rels_path = make_rels_path(self._xml_path)
return find_first_relation_path_with_prefix(self._storage.loader, rels_path, SLIDE_LAYOUTS_PATH_PREFIX)
def rels(self) -> ElementTree:
return self._storage.loader.get_file_xml(make_rels_path(self._xml_path))
def _slide_master_path(self) -> str:
rels_path = make_rels_path(self._xml_path)
return find_first_relation_path_with_prefix(self._storage.loader, rels_path, SLIDE_MASTERS_PATH_PREFIX)
def _theme_path(self) -> str:
rels_path = make_rels_path(self._xml_path)
return find_first_relation_path_with_prefix(self._storage.loader, rels_path, THEMES_PATH_PREFIX)
def copy_relations_recursively(src_loader: Loader, src_rels_filepath: str,
dest_loader: Loader, dest_rels_filepath: str,
state: Optional[_CopyRelationState] = None) -> Iterable[str]:
"""
:return: abs destination paths of what was copied
"""
if state is None:
state = _CopyRelationState()
src_xml = src_loader.get_file_xml(src_rels_filepath)
dest_xml = dest_loader.get_file_xml(dest_rels_filepath)
target_filepaths_queue = list()
repeated_target_filepaths_queue = list()
for src_rel in src_xml.xpath('r:Relationship', namespaces=pptx_xml_ns):
# make dest target filepath
relative_src_target = src_rel.get('Target')
match_result = _PATH_DIR_CONTENT_NAME_EXT_REGEX.match(relative_src_target)
dir_name = match_result.group(1)
content_name = match_result.group(2)
ext = match_result.group(3)
last_target_index = find_last_index_of_content(loader=dest_loader, content_name=content_name, dir_name=dir_name)
dest_target_index = last_target_index + 1
relative_dest_target = f'../{dir_name}/{content_name}{dest_target_index}.{ext}'
# copy file
abs_src_target = absolutize_filepath_relatively_to_content_dirs(relative_src_target)
abs_dest_target = absolutize_filepath_relatively_to_content_dirs(relative_dest_target)
contents = src_loader.get_file(abs_src_target)
dest_loader.save_file(abs_dest_target, contents)
# add this file's rels to copy queue
src_rel_filepath = make_rels_path(abs_src_target)
dest_rel_filepath = make_rels_path(abs_dest_target)
if src_loader.does_file_exist(src_rel_filepath):
if state.has_src(abs_src_target):
repeated_target_filepaths_queue.append((src_rel_filepath, dest_rel_filepath))
else:
target_filepaths_queue.append((src_rel_filepath, dest_rel_filepath))
# track
state.track(abs_src_target, abs_dest_target)
# track in rels
dest_item_xml = etree.Element('{%s}Relationship' % pptx_xml_ns['r'])
dest_item_xml.set('Id', src_rel.get('Id'))
dest_item_xml.set('Type', src_rel.get('Type'))
dest_item_xml.set('Target', relative_dest_target)
dest_xml.append(dest_item_xml)
dest_loader.save_file_xml(dest_rels_filepath, dest_xml)
for src_rel_filepath, dest_rel_filepath in target_filepaths_queue:
create_blank_rels(loader=dest_loader,
filepath=dest_rel_filepath)
copy_relations_recursively(src_loader=src_loader, src_rels_filepath=src_rel_filepath,
dest_loader=dest_loader, dest_rels_filepath=dest_rel_filepath,
state=state)
for src_rel_filepath, dest_rel_filepath in repeated_target_filepaths_queue:
create_blank_rels(loader=dest_loader,
filepath=dest_rel_filepath)
_copy_relations_recursively_repeated_case(src_loader=src_loader, src_rels_filepath=src_rel_filepath,
dest_loader=dest_loader, dest_rels_filepath=dest_rel_filepath,
state=state)
return state.dest_filepaths