69 lines
1.5 KiB
JavaScript
69 lines
1.5 KiB
JavaScript
import { castStringToSingleString, escapeFormat, quoteUrl } from './utils'
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import { getFirstAuthors, getIssuedDate } from './helpers'
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function getRobustTitle (title, volume) {
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if (volume) {
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if (title) {
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title = `${title} ${volume}`
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} else {
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title = volume
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}
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}
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return escapeFormat(title)
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}
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export function getFilename (authors, title, doi, issuedDate, md5, extension) {
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const limit = 55
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const processedAuthor = castStringToSingleString((getFirstAuthors(authors, false, 1)).toLowerCase())
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const processedTitle = castStringToSingleString(getRobustTitle(title)).toLowerCase()
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const parts = []
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if (processedAuthor) {
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parts.push(processedAuthor)
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}
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if (processedTitle) {
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parts.push(processedTitle)
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}
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let filename = parts.join('-')
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const chars = []
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let size = 0
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let hitLimit = false
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for (const c of filename) {
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const currentSize = size + c.length
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if (currentSize > limit) {
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hitLimit = true
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break
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}
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chars.push(c)
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size = currentSize
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}
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filename = chars.join('')
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if (hitLimit) {
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const glyph = filename.lastIndexOf('-')
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if (glyph !== -1) {
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filename = filename.substr(0, glyph)
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}
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}
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if (!filename) {
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if (doi) {
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filename = quoteUrl(doi, '')
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} else {
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filename = md5
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}
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}
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const year = getIssuedDate(issuedDate)
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if (year) {
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filename = `${filename}-${year}`
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}
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filename = filename.replace(/-+/g, '-')
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return `${filename}.${extension}`
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}
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