Return rels item XML for source with `source_uri`, or None if the item has no rels item.
(self, source_uri)
| 59 | return self.blob_for(CONTENT_TYPES_URI) |
| 60 | |
| 61 | def rels_xml_for(self, source_uri): |
| 62 | """Return rels item XML for source with `source_uri`, or None if the item has no |
| 63 | rels item.""" |
| 64 | try: |
| 65 | rels_xml = self.blob_for(source_uri.rels_uri) |
| 66 | except IOError: |
| 67 | rels_xml = None |
| 68 | return rels_xml |
| 69 | |
| 70 | |
| 71 | class _ZipPkgReader(PhysPkgReader): |