diff options
Diffstat (limited to 'mammoth')
| -rw-r--r-- | mammoth/docx/style_map.py | 7 | ||||
| -rw-r--r-- | mammoth/zips.py | 28 |
2 files changed, 29 insertions, 6 deletions
diff --git a/mammoth/docx/style_map.py b/mammoth/docx/style_map.py index 2841830..94c32af 100644 --- a/mammoth/docx/style_map.py +++ b/mammoth/docx/style_map.py @@ -1,12 +1,13 @@ -from ..zips import open_zip +from ..zips import open_zip, update_zip _style_map_path = "mammoth/style-map" def write_style_map(fileobj, style_map): - with open_zip(fileobj, "a") as zip_file: - zip_file.write_str(_style_map_path, style_map) + update_zip(fileobj, { + _style_map_path: style_map + }) def read_style_map(fileobj): diff --git a/mammoth/zips.py b/mammoth/zips.py index 24c6b1c..432be5d 100644 --- a/mammoth/zips.py +++ b/mammoth/zips.py @@ -1,4 +1,6 @@ import contextlib +import io +import shutil from zipfile import ZipFile @@ -27,8 +29,28 @@ class _Zip(object): except KeyError: return False - def write_str(self, name, value): - self._zip_file.writestr(name, value) - def read_str(self, name): return self._zip_file.read(name).decode("utf8") + + +def update_zip(fileobj, files): + source = ZipFile(fileobj, "r") + try: + destination_fileobj = io.BytesIO() + destination = ZipFile(destination_fileobj, "w") + try: + names = set(source.namelist()) | set(files.keys()) + for name in names: + if name in files: + contents = files[name] + else: + contents = source.read(name) + destination.writestr(name, contents) + finally: + destination.close() + finally: + source.close() + + fileobj.seek(0) + destination_fileobj.seek(0) + shutil.copyfileobj(destination_fileobj, fileobj) |