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🚧 ppn2ocr: Extract a function to contain the IIIF hack
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parent
c7c8934e89
commit
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1 changed files with 20 additions and 6 deletions
26
ppn2ocr
26
ppn2ocr
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@ -50,6 +50,25 @@ def oai_mets(ppn):
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return mets
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def iiif_url_for_dms_url(dms_url, ppn, size):
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"""
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Construct an IIIF URL from a dms URL.
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This function exists to contain the hack of rewriting the URL to get IIIF.
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"""
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if ppn not in dms_url:
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raise ValueError(f"Unexpected URL {dms_url}")
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m = re.search(r'/dms/.*/([0-9]+)\.jpg$', dms_url)
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if m:
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page_num = m.group(1)
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else:
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raise ValueError(f"Unexpected URL {dms_url}")
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iiif_identifier = f'{ppn}-{page_num}'
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iiif_url = f'https://content.staatsbibliothek-berlin.de/dc/{iiif_identifier}/full/{size}/0/default.jpg'
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return iiif_url
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def make_workspace(ppn, workspace):
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# Make workspace directory
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os.mkdir(workspace)
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@ -82,12 +101,7 @@ def make_workspace(ppn, workspace):
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# XXX Need to fumble around with the URL for now
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flocat = f.find(f".//{{{XMLNS['mets']}}}FLocat")
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old_url = flocat.attrib[f"{{{XMLNS['xlink']}}}href"]
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m = re.search(r'/dms/.*/([0-9]+)\.jpg$', old_url)
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if m:
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page_num = m.group(1)
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else:
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raise ValueError(f"Unexpected DEFAULT URL {old_url}")
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url_iiif_full = f'https://content.staatsbibliothek-berlin.de/dc/{ppn}-{page_num}/full/full/0/default.jpg'
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url_iiif_full = iiif_url_for_dms_url(old_url, ppn, 'full')
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flocat.attrib[f"{{{XMLNS['xlink']}}}href"] = url_iiif_full
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mets.find('//mets:fileSec', namespaces=XMLNS).append(file_grp_best)
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