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Code Issues Packages 1 Wiki Activity

Add console.clear() (#1562)

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binaryta 2019-01-25 03:24:39 +09:00 committed by Ryan Dahl
parent 6904628aaa
commit 4a0a47dcde
2 changed files with 44 additions and 2 deletions
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22
js/console.ts
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@ -1,5 +1,7 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { isTypedArray } from "./util";
import { TextEncoder } from "./text_encoding";
import { File, stdout } from "./files";
// tslint:disable-next-line:no-any
type ConsoleContext = Set<any>;
@ -23,6 +25,20 @@ const CHAR_LOWERCASE_F = 102; /* f */
const CHAR_LOWERCASE_O = 111; /* o */
const CHAR_UPPERCASE_O = 79; /* O */
const CHAR_LOWERCASE_C = 99; /* c */
export class CSI {
static kClear = "\x1b[1;1H";
static kClearScreenDown = "\x1b[0J";
}
function cursorTo(stream: File, x: number, y?: number) {
const uint8 = new TextEncoder().encode(CSI.kClear);
stream.write(uint8);
}
function clearScreenDown(stream: File) {
const uint8 = new TextEncoder().encode(CSI.kClearScreenDown);
stream.write(uint8);
}
// tslint:disable-next-line:no-any
function getClassInstanceName(instance: any): string {
@ -639,6 +655,12 @@ export class Console {
this.log(); // When the collapsed state ended, outputs a sinle new line.
}
};
clear = (): void => {
this.indentLevel = 0;
cursorTo(stdout, 0, 0);
clearScreenDown(stdout);
};
}
/**

24
js/console_test.ts
View file

@ -1,5 +1,5 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { Console, libdeno, stringifyArgs, inspect } from "deno";
import { Console, libdeno, stringifyArgs, inspect, write, stdout } from "deno";
import { test, assertEqual } from "./test_util.ts";
const console = new Console(libdeno.print);
@ -116,7 +116,7 @@ test(function consoleTestStringifyCircular() {
assertEqual(
stringify(console),
// tslint:disable-next-line:max-line-length
"Console { printFunc: [Function], log: [Function], debug: [Function], info: [Function], dir: [Function], warn: [Function], error: [Function], assert: [Function], count: [Function], countReset: [Function], time: [Function], timeLog: [Function], timeEnd: [Function], group: [Function], groupCollapsed: [Function], groupEnd: [Function], indentLevel: 0, collapsedAt: null }"
"Console { printFunc: [Function], log: [Function], debug: [Function], info: [Function], dir: [Function], warn: [Function], error: [Function], assert: [Function], count: [Function], countReset: [Function], time: [Function], timeLog: [Function], timeEnd: [Function], group: [Function], groupCollapsed: [Function], groupEnd: [Function], clear: [Function], indentLevel: 0, collapsedAt: null }"
);
// test inspect is working the same
assertEqual(inspect(nestedObj), nestedObjExpected);
@ -249,6 +249,24 @@ test(function consoleTestError() {
}
});
test(function consoleTestClear() {
const stdoutWrite = stdout.write;
const uint8 = new TextEncoder().encode("\x1b[1;1H" + "\x1b[0J");
let buffer = new Uint8Array(0);
stdout.write = async u8 => {
const tmp = new Uint8Array(buffer.length + u8.length);
tmp.set(buffer, 0);
tmp.set(u8, buffer.length);
buffer = tmp;
return await write(stdout.rid, u8);
};
console.clear();
stdout.write = stdoutWrite;
assertEqual(buffer, uint8);
});
// Test bound this issue
test(function consoleDetachedLog() {
const log = console.log;
@ -265,6 +283,7 @@ test(function consoleDetachedLog() {
const consoleTimeEnd = console.timeEnd;
const consoleGroup = console.group;
const consoleGroupEnd = console.groupEnd;
const consoleClear = console.clear;
log("Hello world");
dir("Hello world");
debug("Hello world");
@ -279,4 +298,5 @@ test(function consoleDetachedLog() {
consoleTimeEnd("Hello world");
consoleGroup("Hello world");
consoleGroupEnd();
console.clear();
});