Commit 5580e6a2549e71500ea6cc7af3b4c5b5f21684fa
simple ascii progress bar
Dominic Tarr committed on 6/9/2017, 11:31:49 PMParent: 707a39608eb88fea931761a44972491e378d34b3
Files changed
| lib/progress.js | added |
| lib/progress.js | ||
|---|---|---|
| @@ -1,0 +1,42 @@ | ||
| 1 | +//poll the progress() function and report how much waiting there is... | |
| 2 | +//just whipped this up, obviously room for improvement here. | |
| 3 | +module.exports = function (progress) { | |
| 4 | + function bar (r) { | |
| 5 | + var s = '\r', M = 50 | |
| 6 | + for(var i = 0; i < M; i++) | |
| 7 | + s += i < M*r ? '*' : '.' | |
| 8 | + | |
| 9 | + return s | |
| 10 | + } | |
| 11 | + | |
| 12 | + function round (n, p) { | |
| 13 | + return Math.round(n * p) / p | |
| 14 | + } | |
| 15 | + | |
| 16 | + function percent (n) { | |
| 17 | + return (round(n, 1000)*100).toString()+'%' | |
| 18 | + } | |
| 19 | + | |
| 20 | + function rate (prog) { | |
| 21 | + if(prog.target == prog.current) return 1 | |
| 22 | + return (prog.current - prog.start) / (prog.target - prog.start) | |
| 23 | + } | |
| 24 | + | |
| 25 | + var prog = -1 | |
| 26 | + setInterval(function () { | |
| 27 | + var p = progress() | |
| 28 | + var r = 0, c = 0 | |
| 29 | + var tasks = [] | |
| 30 | + for(var k in p) { | |
| 31 | + var _r = rate(p[k]) | |
| 32 | + tasks.push(k+':'+percent(_r)) | |
| 33 | + r += _r | |
| 34 | + c++ | |
| 35 | + } | |
| 36 | + if(r != prog) { | |
| 37 | + prog = r | |
| 38 | + var msg = tasks.join(', ') | |
| 39 | + process.stdout.write(bar(prog) + ' ('+msg+')') | |
| 40 | + } | |
| 41 | + }, 333).unref() | |
| 42 | +} | |
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