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111 lines
3.2 KiB
TypeScript
111 lines
3.2 KiB
TypeScript
// Loaded from https://deno.land/std@0.92.0/io/util.ts
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import { Buffer } from "./buffer.ts";
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/** Read Reader `r` until EOF (`null`) and resolve to the content as
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* Uint8Array`.
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*
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* ```ts
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*
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* // Example from stdin
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* const stdinContent = await readAll(Deno.stdin);
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*
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* // Example from file
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* const file = await Deno.open("my_file.txt", {read: true});
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* const myFileContent = await readAll(file);
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* Deno.close(file.rid);
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*
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* // Example from buffer
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* const myData = new Uint8Array(100);
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* // ... fill myData array with data
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* const reader = new Buffer(myData.buffer as ArrayBuffer);
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* const bufferContent = await readAll(reader);
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* ```
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*/
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export async function readAll(r: Deno.Reader): Promise<Uint8Array> {
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const buf = new Buffer();
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await buf.readFrom(r);
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return buf.bytes();
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}
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/** Synchronously reads Reader `r` until EOF (`null`) and returns the content
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* as `Uint8Array`.
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*
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* ```ts
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* // Example from stdin
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* const stdinContent = readAllSync(Deno.stdin);
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*
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* // Example from file
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* const file = Deno.openSync("my_file.txt", {read: true});
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* const myFileContent = readAllSync(file);
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* Deno.close(file.rid);
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*
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* // Example from buffer
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* const myData = new Uint8Array(100);
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* // ... fill myData array with data
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* const reader = new Buffer(myData.buffer as ArrayBuffer);
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* const bufferContent = readAllSync(reader);
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* ```
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*/
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export function readAllSync(r: Deno.ReaderSync): Uint8Array {
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const buf = new Buffer();
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buf.readFromSync(r);
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return buf.bytes();
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}
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/** Write all the content of the array buffer (`arr`) to the writer (`w`).
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*
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* ```ts
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* // Example writing to stdout
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* const contentBytes = new TextEncoder().encode("Hello World");
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* await writeAll(Deno.stdout, contentBytes);
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*
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* // Example writing to file
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* const contentBytes = new TextEncoder().encode("Hello World");
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* const file = await Deno.open('test.file', {write: true});
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* await writeAll(file, contentBytes);
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* Deno.close(file.rid);
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*
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* // Example writing to buffer
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* const contentBytes = new TextEncoder().encode("Hello World");
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* const writer = new Buffer();
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* await writeAll(writer, contentBytes);
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* console.log(writer.bytes().length); // 11
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* ```
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*/
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export async function writeAll(w: Deno.Writer, arr: Uint8Array): Promise<void> {
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let nwritten = 0;
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while (nwritten < arr.length) {
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nwritten += await w.write(arr.subarray(nwritten));
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}
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}
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/** Synchronously write all the content of the array buffer (`arr`) to the
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* writer (`w`).
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*
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* ```ts
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* // Example writing to stdout
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* const contentBytes = new TextEncoder().encode("Hello World");
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* writeAllSync(Deno.stdout, contentBytes);
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*
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* // Example writing to file
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* const contentBytes = new TextEncoder().encode("Hello World");
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* const file = Deno.openSync('test.file', {write: true});
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* writeAllSync(file, contentBytes);
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* Deno.close(file.rid);
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*
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* // Example writing to buffer
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* const contentBytes = new TextEncoder().encode("Hello World");
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* const writer = new Buffer();
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* writeAllSync(writer, contentBytes);
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* console.log(writer.bytes().length); // 11
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* ```
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*/
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export function writeAllSync(w: Deno.WriterSync, arr: Uint8Array): void {
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let nwritten = 0;
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while (nwritten < arr.length) {
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nwritten += w.writeSync(arr.subarray(nwritten));
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}
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}
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