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Update:OPF metadata parser supports namespaces on creator and identifier tags #3201

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advplyr 2024-07-28 14:54:17 -05:00
parent b524cbd1b3
commit e342b07cd0
1 changed files with 45 additions and 14 deletions
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59
server/utils/parsers/parseOpfMetadata.js
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@ -1,16 +1,31 @@
const { xmlToJSON } = require('../index') const { xmlToJSON } = require('../index')
const htmlSanitizer = require('../htmlSanitizer') const htmlSanitizer = require('../htmlSanitizer')
/**
* @typedef MetadataCreatorObject
* @property {string} value
* @property {string} role
* @property {string} fileAs
*
* @example
* <dc:creator xmlns:ns0="http://www.idpf.org/2007/opf" ns0:role="aut" ns0:file-as="Steinbeck, John">John Steinbeck</dc:creator>
* <dc:creator opf:role="aut" opf:file-as="Orwell, George">George Orwell</dc:creator>
*
* @param {Object} metadata
* @returns {MetadataCreatorObject[]}
*/
function parseCreators(metadata) { function parseCreators(metadata) {
if (!metadata['dc:creator']) return null if (!metadata['dc:creator']?.length) return null
const creators = metadata['dc:creator'] return metadata['dc:creator'].map((c) => {
if (!creators.length) return null
return creators.map((c) => {
if (typeof c !== 'object' || !c['$'] || !c['_']) return false if (typeof c !== 'object' || !c['$'] || !c['_']) return false
const namespace =
Object.keys(c['$'])
.find((key) => key.startsWith('xmlns:'))
?.split(':')[1] || 'opf'
return { return {
value: c['_'], value: c['_'],
role: c['$']['opf:role'] || null, role: c['$'][`${namespace}:role`] || null,
fileAs: c['$']['opf:file-as'] || null fileAs: c['$'][`${namespace}:file-as`] || null
} }
}) })
} }
@ -59,18 +74,34 @@ function fetchPublisher(metadata) {
return fetchTagString(metadata, 'dc:publisher') return fetchTagString(metadata, 'dc:publisher')
} }
/**
* @example
* <dc:identifier xmlns:ns4="http://www.idpf.org/2007/opf" ns4:scheme="ISBN">9781440633904</dc:identifier>
* <dc:identifier opf:scheme="ISBN">9780141187761</dc:identifier>
*
* @param {Object} metadata
* @param {string} scheme
* @returns {string}
*/
function fetchIdentifier(metadata, scheme) {
if (!metadata['dc:identifier']?.length) return null
const identifierObj = metadata['dc:identifier'].find((i) => {
if (!i['$']) return false
const namespace =
Object.keys(i['$'])
.find((key) => key.startsWith('xmlns:'))
?.split(':')[1] || 'opf'
return i['$'][`${namespace}:scheme`] === scheme
})
return identifierObj?.['_'] || null
}
function fetchISBN(metadata) { function fetchISBN(metadata) {
if (!metadata['dc:identifier'] || !metadata['dc:identifier'].length) return null return fetchIdentifier(metadata, 'ISBN')
const identifiers = metadata['dc:identifier']
const isbnObj = identifiers.find((i) => i['$'] && i['$']['opf:scheme'] === 'ISBN')
return isbnObj ? isbnObj['_'] || null : null
} }
function fetchASIN(metadata) { function fetchASIN(metadata) {
if (!metadata['dc:identifier'] || !metadata['dc:identifier'].length) return null return fetchIdentifier(metadata, 'ASIN')
const identifiers = metadata['dc:identifier']
const asinObj = identifiers.find((i) => i['$'] && i['$']['opf:scheme'] === 'ASIN')
return asinObj ? asinObj['_'] || null : null
} }
function fetchTitle(metadata) { function fetchTitle(metadata) {