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import { |
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2
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fsWritePromise, |
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3
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processFileSync, |
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processFileAsync, |
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fsExistsPromise, |
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fsWriteFilePromise, |
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fsRenamePromise, |
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unlinkIfExistSync, |
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unlinkIfExist, |
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fsReadAsync, |
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makeTempFilepath |
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} from "./util-file" |
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import * as fs from 'fs' |
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import { Id3TagRemover } from "./file-stream-processor" |
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import { WriteOptions } from "./types/write" |
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export function writeId3TagToFileSync( |
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filepath: string, |
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id3Tag: Buffer, |
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options: WriteOptions |
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): void { |
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if (!fs.existsSync(filepath)) { |
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fs.writeFileSync(filepath, id3Tag) |
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return |
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} |
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const tempFilepath = makeTempFilepath(filepath) |
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processFileSync(filepath, 'r', (readFileDescriptor) => { |
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try { |
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processFileSync(tempFilepath, 'w', (writeFileDescriptor) => { |
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fs.writeSync(writeFileDescriptor, id3Tag) |
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copyFileWithoutId3TagSync( |
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readFileDescriptor, |
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writeFileDescriptor, |
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options.fileBufferSize |
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) |
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}) |
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} catch(error) { |
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unlinkIfExistSync(tempFilepath) |
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throw error |
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} |
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}) |
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fs.renameSync(tempFilepath, filepath) |
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} |
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export async function writeId3TagToFileAsync( |
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filepath: string, |
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id3Tag: Buffer, |
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options: WriteOptions |
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): Promise<void> { |
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if (!await fsExistsPromise(filepath)) { |
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await fsWriteFilePromise(filepath, id3Tag) |
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return |
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} |
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const tempFilepath = makeTempFilepath(filepath) |
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await processFileAsync(filepath, 'r', async (readFileDescriptor) => { |
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try { |
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await processFileAsync(tempFilepath, 'w', |
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async (writeFileDescriptor) => { |
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await fsWritePromise(writeFileDescriptor, id3Tag) |
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await copyFileWithoutId3TagAsync( |
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readFileDescriptor, |
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writeFileDescriptor, |
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options.fileBufferSize |
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64
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) |
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} |
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) |
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} catch(error) { |
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await unlinkIfExist(tempFilepath) |
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throw error |
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} |
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}) |
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await fsRenamePromise(tempFilepath, filepath) |
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} |
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function copyFileWithoutId3TagSync( |
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readFileDescriptor: number, |
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writeFileDescriptor: number, |
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fileBufferSize?: number |
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) { |
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const remover = new Id3TagRemover(fileBufferSize) |
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do { |
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const readBuffer = remover.getReadBuffer() |
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const sizeRead = fs.readSync(readFileDescriptor, readBuffer) |
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const { skipBuffer, writeBuffer } = remover.processReadBuffer(sizeRead) |
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fs.readSync(readFileDescriptor, skipBuffer) |
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fs.writeSync(writeFileDescriptor, writeBuffer) |
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} while(remover.continue) |
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} |
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91
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async function copyFileWithoutId3TagAsync( |
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readFileDescriptor: number, |
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93
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writeFileDescriptor: number, |
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94
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fileBufferSize?: number |
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95
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) { |
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96
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const remover = new Id3TagRemover(fileBufferSize) |
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do { |
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const readBuffer = remover.getReadBuffer() |
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const sizeRead = await fsReadAsync(readFileDescriptor, readBuffer) |
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const { skipBuffer, writeBuffer } = remover.processReadBuffer(sizeRead) |
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await fsReadAsync(readFileDescriptor, skipBuffer) |
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await fsWriteFilePromise(writeFileDescriptor, writeBuffer) |
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} while(remover.continue) |
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} |
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Zazama /
node-id3
