PeerTube/server/helpers/captions-utils.ts

54 lines
1.8 KiB
TypeScript
Raw Normal View History

2021-02-15 14:08:16 +01:00
import { createReadStream, createWriteStream, move, remove } from 'fs-extra'
2018-07-16 14:22:16 +02:00
import { join } from 'path'
import * as srt2vtt from 'srt-to-vtt'
2021-02-15 14:08:16 +01:00
import { MVideoCaption } from '@server/types/models'
import { CONFIG } from '../initializers/config'
2021-04-27 09:00:09 +02:00
import { pipelinePromise } from './core-utils'
import { Transform } from 'stream'
2018-07-16 14:22:16 +02:00
2021-02-15 14:08:16 +01:00
async function moveAndProcessCaptionFile (physicalFile: { filename: string, path: string }, videoCaption: MVideoCaption) {
2018-07-16 14:22:16 +02:00
const videoCaptionsDir = CONFIG.STORAGE.CAPTIONS_DIR
2021-02-15 14:08:16 +01:00
const destination = join(videoCaptionsDir, videoCaption.filename)
2018-07-16 14:22:16 +02:00
// Convert this srt file to vtt
if (physicalFile.path.endsWith('.srt')) {
await convertSrtToVtt(physicalFile.path, destination)
2018-08-27 16:23:34 +02:00
await remove(physicalFile.path)
} else if (physicalFile.path !== destination) { // Just move the vtt file
2018-12-11 15:56:35 +01:00
await move(physicalFile.path, destination, { overwrite: true })
2018-07-16 14:22:16 +02:00
}
// This is important in case if there is another attempt in the retry process
2021-02-15 14:08:16 +01:00
physicalFile.filename = videoCaption.filename
2018-07-16 14:22:16 +02:00
physicalFile.path = destination
}
// ---------------------------------------------------------------------------
export {
moveAndProcessCaptionFile
}
// ---------------------------------------------------------------------------
function convertSrtToVtt (source: string, destination: string) {
2021-04-27 09:00:09 +02:00
const fixVTT = new Transform({
transform: (chunk, _encoding, cb) => {
let block: string = chunk.toString()
2018-07-16 14:22:16 +02:00
2021-04-27 09:00:09 +02:00
block = block.replace(/(\d\d:\d\d:\d\d)(\s)/g, '$1.000$2')
.replace(/(\d\d:\d\d:\d\d),(\d)(\s)/g, '$1.00$2$3')
.replace(/(\d\d:\d\d:\d\d),(\d\d)(\s)/g, '$1.0$2$3')
2018-07-16 14:22:16 +02:00
2021-04-27 09:00:09 +02:00
return cb(undefined, block)
}
2018-07-16 14:22:16 +02:00
})
2021-04-27 09:00:09 +02:00
return pipelinePromise(
createReadStream(source),
srt2vtt(),
fixVTT,
createWriteStream(destination)
)
2018-07-16 14:22:16 +02:00
}