Class _ZipPkgReader

src/docx/opc/phys_pkg.py:71–101

Implements |PhysPkgReader| interface for a zip file OPC package.

class _ZipPkgReader(PhysPkgReader):
    """Implements |PhysPkgReader| interface for a zip file OPC package."""

    def __init__(self, pkg_file):
        super(_ZipPkgReader, self).__init__()
        self._zipf = ZipFile(pkg_file, "r")

    def blob_for(self, pack_uri):
        """Return blob corresponding to `pack_uri`.

        Raises |ValueError| if no matching member is present in zip archive.
        """
        return self._zipf.read(pack_uri.membername)

    def close(self):
        """Close the zip archive, releasing any resources it is using."""
        self._zipf.close()

    @property
    def content_types_xml(self):
        """Return the `[Content_Types].xml` blob from the zip package."""
        return self.blob_for(CONTENT_TYPES_URI)

    def rels_xml_for(self, source_uri):
        """Return rels item XML for source with `source_uri` or None if no rels item is
        present."""
        try:
            rels_xml = self.blob_for(source_uri.rels_uri)
        except KeyError:
            rels_xml = None
        return rels_xml


class _ZipPkgWriter(PhysPkgWriter):