$code:
    names = {
        "marc_baclac": "Library and Archives Canada",
        "marc_dnb_202006": "Deutsche Nationalbibliothek",
        "marc_loc_updates": "Library of Congress",
        "marc_loc_2016": "Library of Congress",
        "marc_loc_2019": "Library of Congress",
        "marc_records_scriblio_net": "Scriblio",
        "talis_openlibrary_contribution": "Talis",
        "unc_catalog_marc": "University of North Carolina",
        "marc_oregon_summit_records": "Oregon Libraries",
        "marc_western_washington_univ": "Western Washington University",
        "marc_university_of_toronto": "University of Toronto",
        "bpl_marc": "Boston Public Library",
        "marc_boston_college": "Boston College",
        "marc_miami_univ_ohio": "Miami University of Ohio",
        "marc_laurentian": "The Laurentian Library",
        "wfm_bk_marc": "Buffalo State College",
        "CollingswoodLibraryMarcDump10-27-2008": "Collingswood Public Library",
        "hollis_marc": "Harvard's HOLLIS catalog",
        "marc_ithaca_college": "Ithaca College Library",
        "marc_binghamton_univ": "Binghamton University",
        "marc_upei": "University of Prince Edward Island",
        "marc_marygrove": "Marygrove College",
    }
    for i in range(1, 17):
        names["SanFranPL%02d" % i] = "San Francisco Public Library"

    def get_source_record(record_id):
        if '/' not in record_id and '_meta.mrc:' in record_id:
            record_id = 'ia:' + record_id.split('_')[0]
        item = record_id.split("/")[0]
        url = "/show-records/" + record_id

        if item.startswith("ia:"):
            source_name = "Internet Archive"
            source_url = "//archive.org/details/" + item[3:]
        elif item.startswith("promise:"):
            source_name = "Promise Item"
            source_url = "https://archive.org/details/" + item[8:]
        elif item.startswith("amazon:"):
            source_name = "amazon.com"
            source_url = "https://www.amazon.com/?tag=" + affiliate_id('amazon')
        elif item.startswith("bwb:"):
            source_name = "Better World Books"
            source_url = "https://www.betterworldbooks.com/"
        elif item.startswith("google_books:"):
            source_name = "Google Books"
            source_url = "https://books.google.com/"
        elif item.startswith("idb:") or item.startswith("osp:"):
            source_name = "ISBNdb"
            source_url = "https://isbndb.com/"
        elif item.startswith("openalex:"):
            source_name = "OpenAlex"
            source_url = "https://openalex.org/" + item[9:]
        else:
            source_name = names.get(item, item)
            source_url = "//archive.org/details/" + item
        return storage(id=record_id, url=url, source_name=source_name, source_url=source_url)

    def link(url, label):
        return '<a href="' + url + '">' + label + '</a>' if url else label

    def get_source_html(record_id):
        record_type = _('record')
        if record_id.startswith('marc:'):
	    record_id = record_id[5:]
        if record_id.startswith('marc'):
	    record_type = _('MARC record')
        record = get_source_record(record_id)
	if record.source_name == 'Internet Archive':
	    record_type = _('item record')
	if record.source_name in ('Promise Item', 'ISBNdb', 'OpenAlex'):
            return link(record.source_url, record.source_name)
	else:
            return link(record.source_url, record.source_name) + ' ' + link(record.url, record_type)

$var get_source_record = get_source_record
$var get_source_html = get_source_html