mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2024-11-08 09:04:43 +01:00
196 lines
6.1 KiB
JavaScript
196 lines
6.1 KiB
JavaScript
const { xmlToJSON } = require('../index')
|
|
const htmlSanitizer = require('../htmlSanitizer')
|
|
|
|
function parseCreators(metadata) {
|
|
if (!metadata['dc:creator']) return null
|
|
const creators = metadata['dc:creator']
|
|
if (!creators.length) return null
|
|
return creators.map(c => {
|
|
if (typeof c !== 'object' || !c['$'] || !c['_']) return false
|
|
return {
|
|
value: c['_'],
|
|
role: c['$']['opf:role'] || null,
|
|
fileAs: c['$']['opf:file-as'] || null
|
|
}
|
|
})
|
|
}
|
|
|
|
function fetchCreators(creators, role) {
|
|
if (!creators?.length) return null
|
|
return [...new Set(creators.filter(c => c.role === role && c.value).map(c => c.value))]
|
|
}
|
|
|
|
function fetchTagString(metadata, tag) {
|
|
if (!metadata[tag] || !metadata[tag].length) return null
|
|
let value = metadata[tag][0]
|
|
|
|
/*
|
|
EXAMPLES:
|
|
|
|
"dc:title": [
|
|
{
|
|
"_": "The Quest for Character",
|
|
"$": {
|
|
"opf:file-as": "Quest for Character What the Story of Socrates and Alcibiades"
|
|
}
|
|
}
|
|
]
|
|
|
|
OR
|
|
|
|
"dc:title": [
|
|
"The Quest for Character"
|
|
]
|
|
*/
|
|
if (typeof value === 'object') value = value._
|
|
if (typeof value !== 'string') return null
|
|
return value
|
|
}
|
|
|
|
function fetchDate(metadata) {
|
|
const date = fetchTagString(metadata, 'dc:date')
|
|
if (!date) return null
|
|
const dateSplit = date.split('-')
|
|
if (!dateSplit.length || dateSplit[0].length !== 4 || isNaN(dateSplit[0])) return null
|
|
return dateSplit[0]
|
|
}
|
|
|
|
function fetchPublisher(metadata) {
|
|
return fetchTagString(metadata, 'dc:publisher')
|
|
}
|
|
|
|
function fetchISBN(metadata) {
|
|
if (!metadata['dc:identifier'] || !metadata['dc:identifier'].length) return null
|
|
const identifiers = metadata['dc:identifier']
|
|
const isbnObj = identifiers.find(i => i['$'] && i['$']['opf:scheme'] === 'ISBN')
|
|
return isbnObj ? isbnObj['_'] || null : null
|
|
}
|
|
|
|
function fetchASIN(metadata) {
|
|
if (!metadata['dc:identifier'] || !metadata['dc:identifier'].length) return null
|
|
const identifiers = metadata['dc:identifier']
|
|
const asinObj = identifiers.find(i => i['$'] && i['$']['opf:scheme'] === 'ASIN')
|
|
return asinObj ? asinObj['_'] || null : null
|
|
}
|
|
|
|
function fetchTitle(metadata) {
|
|
return fetchTagString(metadata, 'dc:title')
|
|
}
|
|
|
|
function fetchSubtitle(metadata) {
|
|
return fetchTagString(metadata, 'dc:subtitle')
|
|
}
|
|
|
|
function fetchDescription(metadata) {
|
|
let description = fetchTagString(metadata, 'dc:description')
|
|
if (!description) return null
|
|
// check if description is HTML or plain text. only plain text allowed
|
|
// calibre stores < and > as < and >
|
|
description = description.replace(/</g, '<').replace(/>/g, '>')
|
|
return htmlSanitizer.stripAllTags(description)
|
|
}
|
|
|
|
function fetchGenres(metadata) {
|
|
if (!metadata['dc:subject'] || !metadata['dc:subject'].length) return []
|
|
return [...new Set(metadata['dc:subject'].filter(g => g && typeof g === 'string'))]
|
|
}
|
|
|
|
function fetchLanguage(metadata) {
|
|
return fetchTagString(metadata, 'dc:language')
|
|
}
|
|
|
|
function fetchSeries(metadataMeta) {
|
|
if (!metadataMeta) return []
|
|
const result = []
|
|
for (let i = 0; i < metadataMeta.length; i++) {
|
|
if (metadataMeta[i].$?.name === 'calibre:series' && metadataMeta[i].$.content?.trim()) {
|
|
const name = metadataMeta[i].$.content.trim()
|
|
let sequence = null
|
|
if (metadataMeta[i + 1]?.$?.name === 'calibre:series_index' && metadataMeta[i + 1].$?.content?.trim()) {
|
|
sequence = metadataMeta[i + 1].$.content.trim()
|
|
}
|
|
result.push({ name, sequence })
|
|
}
|
|
}
|
|
|
|
// If one series was found with no series_index then check if any series_index meta can be found
|
|
// this is to support when calibre:series_index is not directly underneath calibre:series
|
|
if (result.length === 1 && !result[0].sequence) {
|
|
const seriesIndexMeta = metadataMeta.find(m => m.$?.name === 'calibre:series_index' && m.$.content?.trim())
|
|
if (seriesIndexMeta) {
|
|
result[0].sequence = seriesIndexMeta.$.content.trim()
|
|
}
|
|
}
|
|
return result
|
|
}
|
|
|
|
function fetchNarrators(creators, metadata) {
|
|
const narrators = fetchCreators(creators, 'nrt')
|
|
if (narrators?.length) return narrators
|
|
try {
|
|
const narratorsJSON = JSON.parse(fetchTagString(metadata.meta, "calibre:user_metadata:#narrators").replace(/"/g, '"'))
|
|
return narratorsJSON["#value#"]
|
|
} catch {
|
|
return null
|
|
}
|
|
}
|
|
|
|
function fetchTags(metadata) {
|
|
if (!metadata['dc:tag'] || !metadata['dc:tag'].length) return []
|
|
return [...new Set(metadata['dc:tag'].filter(tag => tag && typeof tag === 'string'))]
|
|
}
|
|
|
|
function stripPrefix(str) {
|
|
if (!str) return ''
|
|
return str.split(':').pop()
|
|
}
|
|
|
|
module.exports.parseOpfMetadataJson = (json) => {
|
|
// Handle <package ...> or with prefix <ns0:package ...>
|
|
const packageKey = Object.keys(json).find(key => stripPrefix(key) === 'package')
|
|
if (!packageKey) return null
|
|
const prefix = packageKey.split(':').shift()
|
|
let metadata = prefix ? json[packageKey][`${prefix}:metadata`] || json[packageKey].metadata : json[packageKey].metadata
|
|
if (!metadata) return null
|
|
|
|
if (Array.isArray(metadata)) {
|
|
if (!metadata.length) return null
|
|
metadata = metadata[0]
|
|
}
|
|
|
|
const metadataMeta = prefix ? metadata[`${prefix}:meta`] || metadata.meta : metadata.meta
|
|
|
|
metadata.meta = {}
|
|
if (metadataMeta?.length) {
|
|
metadataMeta.forEach((meta) => {
|
|
if (meta && meta['$'] && meta['$'].name) {
|
|
metadata.meta[meta['$'].name] = [meta['$'].content || '']
|
|
}
|
|
})
|
|
}
|
|
|
|
const creators = parseCreators(metadata)
|
|
const authors = (fetchCreators(creators, 'aut') || []).map(au => au?.trim()).filter(au => au)
|
|
const narrators = (fetchNarrators(creators, metadata) || []).map(nrt => nrt?.trim()).filter(nrt => nrt)
|
|
return {
|
|
title: fetchTitle(metadata),
|
|
subtitle: fetchSubtitle(metadata),
|
|
authors,
|
|
narrators,
|
|
publishedYear: fetchDate(metadata),
|
|
publisher: fetchPublisher(metadata),
|
|
isbn: fetchISBN(metadata),
|
|
asin: fetchASIN(metadata),
|
|
description: fetchDescription(metadata),
|
|
genres: fetchGenres(metadata),
|
|
language: fetchLanguage(metadata),
|
|
series: fetchSeries(metadataMeta),
|
|
tags: fetchTags(metadata)
|
|
}
|
|
}
|
|
|
|
module.exports.parseOpfMetadataXML = async (xml) => {
|
|
const json = await xmlToJSON(xml)
|
|
if (!json) return null
|
|
return this.parseOpfMetadataJson(json)
|
|
} |