thedesk/app/node_modules/electron-publish/out/progress.js
2019-09-12 23:38:13 +09:00

186 lines
5.5 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.ProgressCallback = exports.ProgressBar = void 0;
/*!
* node-progress
* Copyright(c) 2011 TJ Holowaychuk <tj@vision-media.ca>
* MIT Licensed
*/
class ProgressBar {
/**
* Initialize a `ProgressBar` with the given `fmt` string and `options` or`total`.
*
* Options:
* - `curr` current completed index
* - `total` total number of ticks to complete
* - `width` the displayed width of the progress bar defaulting to total
* - `stream` the output stream defaulting to stderr
* - `head` head character defaulting to complete character
* - `complete` completion character defaulting to "="
* - `incomplete` incomplete character defaulting to "-"
* - `renderThrottle` minimum time between updates in milliseconds defaulting to 16
* - `callback` optional function to call when the progress bar completes
* - `clear` will clear the progress bar upon termination
*
* Tokens:
* - `:bar` the progress bar itself
* - `:current` current tick number
* - `:total` total ticks
* - `:elapsed` time elapsed in seconds
* - `:percent` completion percentage
* - `:eta` eta in seconds
* - `:rate` rate of ticks per second
*/
constructor(format, options = {}) {
this.format = format;
this.current = 0;
this.total = 0;
this.tokens = null;
this.lastDraw = "";
this.start = 0;
this.complete = false;
this.stream = options.stream || process.stderr;
this.total = options.total;
this.width = options.width || this.total;
this.chars = {
complete: options.complete || "=",
incomplete: options.incomplete || "-",
head: options.head || options.complete || "="
};
}
/**
* "tick" the progress bar with optional `len` and optional `tokens`.
*/
tick(delta) {
this.currentAmount = this.current + delta;
}
set currentAmount(value) {
this.current = value;
if (this.complete) {
return;
}
this.render();
if (this.current >= this.total) {
this.complete = true;
this.terminate();
}
}
render() {
// start time for eta
if (this.start === 0) {
this.start = Date.now();
}
const ratio = Math.min(Math.max(this.current / this.total, 0), 1);
const percent = ratio * 100;
const elapsed = Date.now() - this.start;
const eta = percent === 100 ? 0 : elapsed * (this.total / this.current - 1);
const rate = this.current / (elapsed / 1000);
/* populate the bar template with percentages and timestamps */
let str = this.format.replace(":current", this.current.toString()).replace(":total", this.total.toString()).replace(":elapsed", isNaN(elapsed) ? "0.0" : (elapsed / 1000).toFixed(1)).replace(":eta", isNaN(eta) || !isFinite(eta) ? "0.0" : (eta / 1000).toFixed(1)).replace(":percent", percent.toFixed(0) + "%").replace(":rate", Math.round(rate).toString()); // compute the available space (non-zero) for the bar
let availableSpace = Math.max(0, this.stream.columns - str.replace(":bar", "").length);
if (availableSpace && process.platform === "win32") {
availableSpace -= 1;
}
const width = Math.min(this.width, availableSpace);
const completeLength = Math.round(width * ratio);
let complete = Array(Math.max(0, completeLength + 1)).join(this.chars.complete);
const incomplete = Array(Math.max(0, width - completeLength + 1)).join(this.chars.incomplete);
/* add head to the complete string */
if (completeLength > 0) {
complete = complete.slice(0, -1) + this.chars.head;
}
/* fill in the actual progress bar */
str = str.replace(":bar", complete + incomplete);
/* replace the extra tokens */
if (this.tokens != null) {
for (const key of Object.keys(this.tokens)) {
str = str.replace(`:${key}`, this.tokens[key]);
}
}
if (this.lastDraw !== str) {
this.stream.cursorTo(0);
this.stream.write(str);
this.stream.clearLine(1);
this.lastDraw = str;
}
}
/**
* "update" the progress bar to represent an exact percentage.
* The ratio (between 0 and 1) specified will be multiplied by `total` and
* floored, representing the closest available "tick." For example, if a
* progress bar has a length of 3 and `update(0.5)` is called, the progress
* will be set to 1.
*
* A ratio of 0.5 will attempt to set the progress to halfway.
*/
update(ratio) {
const goal = Math.floor(ratio * this.total);
const delta = goal - this.current;
this.tick(delta);
}
/**
* "interrupt" the progress bar and write a message above it.
*/
interrupt(message) {
// clear the current line
const stream = this.stream;
stream.clearLine(); // move the cursor to the start of the line
stream.cursorTo(0); // write the message text
stream.write(message); // terminate the line after writing the message
stream.write("\n"); // re-display the progress bar with its lastDraw
stream.write(this.lastDraw);
}
}
exports.ProgressBar = ProgressBar;
class ProgressCallback {
constructor(progressBar) {
this.progressBar = progressBar;
this.start = Date.now();
this.nextUpdate = this.start + 1000;
}
update(transferred, total) {
const now = Date.now();
if (now >= this.nextUpdate || transferred >= total) {
this.nextUpdate = now + 1000;
this.progressBar.total = total;
this.progressBar.currentAmount = transferred;
}
}
} exports.ProgressCallback = ProgressCallback;
// __ts-babel@6.0.4
//# sourceMappingURL=progress.js.map