63 lines
2.0 KiB
Groovy
63 lines
2.0 KiB
Groovy
package com.jdbernard.util
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/**
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* Controls a console-based progress bar.
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* This bar has two totals, an overall process total and an individual file
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* total. The overall total is 0-based because the current value is incomplete
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* (the file counter is the partial completion of the current step). The file
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* counter is 1-based because the current step is complete for this counter.
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* @author Jonathan Bernard (jonathan.bernard@gemalto.com)
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*/
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class ConsoleProgressBar {
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int MAX_STEP = 30
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int max = 10
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def out = System.out
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private int lastStepAmount = -1
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private String lastLinePrinted = ""
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private String lastInfo = ""
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private long startTime
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void update(int value, String info) {
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if (value == 0) startTime = System.currentTimeMillis()
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def curStep
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def curPercent
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def curTime
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def remTime
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value = Math.min(value, max)
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curStep = Math.floor((value/max) * MAX_STEP)
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curPercent = ((double) value / (double) max)
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if (info != lastInfo || curStep != lastStepAmount) {
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// time so far
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curTime = System.currentTimeMillis() - startTime
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// estimate total time based on how far we are
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remTime = (curTime / curPercent) - curTime
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remTime /= 1000
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def numEq = Math.max(curStep - 1, 0)
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def remMin = curPercent < 0.05 ? '?' : (int) (remTime / 60)
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def remSec = curPercent < 0.05 ? '?' : (int) (((remTime / 60.0) - remMin) * 60)
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out.print '\b' * lastLinePrinted.length()
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lastLinePrinted = '=' * numEq + (curStep > 0 ? "0" : "") + '-' * (MAX_STEP - curStep)
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lastLinePrinted += " ${info.padRight(16)} -- (" +
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"${String.format('%5.2f', curPercent * 100)}%, ${remMin ? remMin + 'm ' : ''}${remSec}s) "
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out.print lastLinePrinted
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lastStepAmount = curStep;
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lastInfo = info
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}
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out.flush()
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}
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void erase() {
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out.print '\b' * lastLinePrinted.length()
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out.print ' ' * lastLinePrinted.length()
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out.print '\b' * lastLinePrinted.length()
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lastLinePrinted = ""
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}
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}
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