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Refactor: remove Bun fallback

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SukkaW
2024-07-24 11:36:14 +08:00
parent bb65a4180c
commit 46ae8e8cd8
5 changed files with 59 additions and 112 deletions
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45
Build/lib/fetch-text-by-line.ts
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@@ -8,47 +8,16 @@ import type { ReadableStream } from 'stream/web';
import { TextDecoderStream } from 'stream/web';
import { processLine } from './process-line';
const enableTextLineStream = !!process.env.ENABLE_TEXT_LINE_STREAM;
const decoder = new TextDecoder('utf-8');
async function *createTextLineAsyncIterableFromStreamSource(stream: ReadableStream<Uint8Array>): AsyncIterable<string> {
let buf = '';
const reader = stream.getReader();
while (true) {
const res = await reader.read();
if (res.done) {
break;
}
const chunkStr = decoder.decode(res.value).replaceAll('\r\n', '\n');
for (let i = 0, len = chunkStr.length; i < len; i++) {
const char = chunkStr[i];
if (char === '\n') {
yield buf;
buf = '';
} else {
buf += char;
}
}
}
if (buf) {
yield buf;
}
}
const getReadableStream = (file: string | FileHandle): ReadableStream => {
if (typeof file === 'string') {
return Readable.toWeb(fs.createReadStream(file /* { encoding: 'utf-8' } */));
return Readable.toWeb(fs.createReadStream(file/* , { encoding: 'utf-8' } */));
}
return file.readableWebStream();
};
// TODO: use FileHandle.readLine()
export const readFileByLine: ((file: string | FileHandle) => AsyncIterable<string>) = enableTextLineStream
? (file: string | FileHandle) => getReadableStream(file).pipeThrough(new TextDecoderStream()).pipeThrough(new TextLineStream())
: (file: string | FileHandle) => createTextLineAsyncIterableFromStreamSource(getReadableStream(file));
export const readFileByLine: ((file: string | FileHandle) => AsyncIterable<string>) = (file: string | FileHandle) => getReadableStream(file)
.pipeThrough(new TextDecoderStream())
.pipeThrough(new TextLineStream());
const ensureResponseBody = (resp: Response) => {
if (!resp.body) {
@@ -60,9 +29,9 @@ const ensureResponseBody = (resp: Response) => {
return resp.body;
};
export const createReadlineInterfaceFromResponse: ((resp: Response) => AsyncIterable<string>) = enableTextLineStream
? (resp) => ensureResponseBody(resp).pipeThrough(new TextDecoderStream()).pipeThrough(new TextLineStream())
: (resp) => createTextLineAsyncIterableFromStreamSource(ensureResponseBody(resp));
export const createReadlineInterfaceFromResponse: ((resp: Response) => AsyncIterable<string>) = (resp) => ensureResponseBody(resp)
.pipeThrough(new TextDecoderStream())
.pipeThrough(new TextLineStream());
export function fetchRemoteTextByLine(url: string | URL) {
return fetchWithRetry(url, defaultRequestInit).then(createReadlineInterfaceFromResponse);