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[tools] Extract unicode progress bar to library 

Change-Id: Ia0710777e7a133b3e335de917364858dd887618d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132640
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
This commit is contained in:
Ben Clayton 2023-05-14 01:41:43 +00:00 committed by Dawn LUCI CQ
parent 1a8bc1df7f
commit 89a3dac882
2 changed files with 247 additions and 60 deletions
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85
tools/src/cmd/run-cts/main.go
View File

@ -24,7 +24,6 @@ import (
"fmt"
"io"
"io/ioutil"
"math"
"net/http"
"os"
"os/exec"
@ -42,6 +41,7 @@ import (
"dawn.googlesource.com/dawn/tools/src/cov"
"dawn.googlesource.com/dawn/tools/src/fileutils"
"dawn.googlesource.com/dawn/tools/src/git"
"dawn.googlesource.com/dawn/tools/src/progressbar"
"github.com/mattn/go-colorable"
"github.com/mattn/go-isatty"
)
@ -911,7 +911,7 @@ func (r *runner) streamResults(ctx context.Context, wg *sync.WaitGroup, results
// Helper function for printing a progress bar.
lastStatusUpdate, animFrame := time.Now(), 0
updateProgress := func() {
fmt.Fprint(r.stdout, ansiProgressBar(animFrame, numTests, numByExpectedStatus))
drawProgressBar(r.stdout, animFrame, numTests, numByExpectedStatus)
animFrame++
lastStatusUpdate = time.Now()
}
@ -971,7 +971,7 @@ func (r *runner) streamResults(ctx context.Context, wg *sync.WaitGroup, results
covTree.Add(SplitCTSQuery(res.testcase), res.coverage)
}
}
fmt.Fprint(r.stdout, ansiProgressBar(animFrame, numTests, numByExpectedStatus))
drawProgressBar(r.stdout, animFrame, numTests, numByExpectedStatus)
// All done. Print final stats.
fmt.Fprintf(r.stdout, "\nCompleted in %v\n", timeTaken)
@ -1101,6 +1101,14 @@ var statusColor = map[status]string{
fail: red,
}
var pbStatusColor = map[status]progressbar.Color{
pass: progressbar.Green,
warn: progressbar.Yellow,
skip: progressbar.Cyan,
timeout: progressbar.Yellow,
fail: progressbar.Red,
}
// expectedStatus is a test status, along with a boolean to indicate whether the
// status matches the test expectations
type expectedStatus struct {
@ -1274,69 +1282,26 @@ func alignRight(val interface{}, width int) string {
return strings.Repeat(" ", padding) + s
}
// ansiProgressBar returns a string with an ANSI-colored progress bar, providing
// realtime information about the status of the CTS run.
// drawProgressBar draws an ANSI-colored progress bar, providing realtime
// information about the status of the CTS run.
// Note: We'll want to skip this if !isatty or if we're running on windows.
func ansiProgressBar(animFrame int, numTests int, numByExpectedStatus map[expectedStatus]int) string {
const barWidth = 50
animSymbols := []rune{'⣾', '⣽', '⣻', '⢿', '⡿', '⣟', '⣯', '⣷'}
blockSymbols := []rune{'▏', '▎', '▍', '▌', '▋', '▊', '▉'}
numBlocksPrinted := 0
buf := &strings.Builder{}
fmt.Fprint(buf, string(animSymbols[animFrame%len(animSymbols)]), " [")
animFrame++
numFinished := 0
func drawProgressBar(out io.Writer, animFrame int, numTests int, numByExpectedStatus map[expectedStatus]int) {
bar := progressbar.Status{Total: numTests}
for _, status := range statuses {
for _, expected := range []bool{true, false} {
color := statusColor[status]
if expected {
color += bold
if num := numByExpectedStatus[expectedStatus{status, expected}]; num > 0 {
bar.Segments = append(bar.Segments,
progressbar.Segment{
Count: num,
Color: pbStatusColor[status],
Bold: expected,
Transparent: expected,
})
}
num := numByExpectedStatus[expectedStatus{status, expected}]
numFinished += num
statusFrac := float64(num) / float64(numTests)
fNumBlocks := barWidth * statusFrac
fmt.Fprint(buf, color)
numBlocks := int(math.Ceil(fNumBlocks))
if expected {
if numBlocks > 1 {
fmt.Fprint(buf, strings.Repeat(string("░"), numBlocks))
}
} else {
if numBlocks > 1 {
fmt.Fprint(buf, strings.Repeat(string("▉"), numBlocks))
}
if numBlocks > 0 {
frac := fNumBlocks - math.Floor(fNumBlocks)
symbol := blockSymbols[int(math.Round(frac*float64(len(blockSymbols)-1)))]
fmt.Fprint(buf, string(symbol))
}
}
numBlocksPrinted += numBlocks
}
}
if barWidth > numBlocksPrinted {
fmt.Fprint(buf, strings.Repeat(string(" "), barWidth-numBlocksPrinted))
}
fmt.Fprint(buf, ansiReset)
fmt.Fprint(buf, "] ", percentage(numFinished, numTests))
if colors {
// move cursor to start of line so the bar is overridden
fmt.Fprint(buf, positionLeft)
} else {
// cannot move cursor, so newline
fmt.Fprintln(buf)
}
return buf.String()
const width = 50
bar.Draw(out, width, colors, animFrame)
}
// testcaseStatus is a pair of testcase name and result status

222
tools/src/progressbar/progressbar.go Normal file
View File

@ -0,0 +1,222 @@
// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package progressbar provides functions for drawing unicode progress bars to
// the terminal
package progressbar
import (
"bytes"
"fmt"
"io"
"math"
"strings"
"time"
)
// Defaults for the Config
const (
DefaultRefreshRate = time.Millisecond * 100
DefaultWidth = 50
DefaultANSIColors = true
)
// Config holds configuration options for a ProgressBar
type Config struct {
RefreshRate time.Duration
Width int
ANSIColors bool
}
// Color is an enumerator of colors
type Color int
// Color enumerators
const (
White Color = iota
Red
Green
Yellow
Blue
Magenta
Cyan
)
// Segment describes a single segment of the ProgressBar
type Segment struct {
Count int
Color Color
Transparent bool
Bold bool
}
// Status holds the updated data of the ProgressBar
type Status struct {
Total int
Segments []Segment
}
// ProgressBar returns a string with an ANSI-colored progress bar, providing
// realtime information about the status of the CTS run.
// Note: We'll want to skip this if !isatty or if we're running on windows.
type ProgressBar struct {
Config
out io.Writer
c chan Status
}
// New returns a new ProgressBar that streams output to out.
// Call ProgressBar.Stop() once finished.
func New(out io.Writer, cfg *Config) *ProgressBar {
p := &ProgressBar{out: out, c: make(chan Status)}
if cfg != nil {
p.Config = *cfg
} else {
p.ANSIColors = DefaultANSIColors
}
if p.RefreshRate == 0 {
p.RefreshRate = DefaultRefreshRate
}
if p.Width == 0 {
p.Width = DefaultWidth
}
go func() {
var status *Status
t := time.NewTicker(p.RefreshRate)
defer t.Stop()
for frame := 0; ; frame++ {
select {
case s, ok := <-p.c:
if !ok {
return
}
status = &s
case <-t.C:
if status != nil {
status.Draw(out, p.Width, p.ANSIColors, frame)
}
}
}
}()
return p
}
// Update updates the ProgressBar with the given status
func (p *ProgressBar) Update(s Status) {
p.c <- s
}
// Stop stops drawing the progress bar.
// Once called, the ProgressBar must not be used.
func (p *ProgressBar) Stop() {
close(p.c)
}
// Draw draws the ProgressBar status to out
func (s Status) Draw(out io.Writer, width int, ansiColors bool, animFrame int) {
// ANSI escape sequences
const (
escape = "\u001B["
positionLeft = escape + "0G"
ansiReset = escape + "0m"
bold = escape + "1m"
red = escape + "31m"
green = escape + "32m"
yellow = escape + "33m"
blue = escape + "34m"
magenta = escape + "35m"
cyan = escape + "36m"
white = escape + "37m"
)
animSymbols := []rune{'⣾', '⣽', '⣻', '⢿', '⡿', '⣟', '⣯', '⣷'}
blockSymbols := []rune{'▏', '▎', '▍', '▌', '▋', '▊', '▉'}
numBlocksPrinted := 0
buf := &bytes.Buffer{}
fmt.Fprint(buf, " ", string(animSymbols[animFrame%len(animSymbols)]), " [")
numFinished := 0
for _, seg := range s.Segments {
if ansiColors {
switch seg.Color {
case Red:
buf.WriteString(red)
case Green:
buf.WriteString(green)
case Yellow:
buf.WriteString(yellow)
case Blue:
buf.WriteString(blue)
case Magenta:
buf.WriteString(magenta)
case Cyan:
buf.WriteString(cyan)
default:
buf.WriteString(white)
}
if seg.Bold {
buf.WriteString(bold)
}
}
numFinished += seg.Count
statusFrac := float64(seg.Count) / float64(s.Total)
fNumBlocks := float64(width) * statusFrac
numBlocks := int(math.Ceil(fNumBlocks))
if seg.Transparent {
if numBlocks > 0 {
fmt.Fprint(buf, strings.Repeat(string("░"), numBlocks))
}
} else {
if numBlocks > 1 {
fmt.Fprint(buf, strings.Repeat(string("▉"), numBlocks-1))
}
if numBlocks > 0 {
frac := fNumBlocks - math.Floor(fNumBlocks)
symbol := blockSymbols[int(math.Round(frac*float64(len(blockSymbols)-1)))]
fmt.Fprint(buf, string(symbol))
}
}
numBlocksPrinted += numBlocks
}
if width > numBlocksPrinted {
fmt.Fprint(buf, strings.Repeat(string(" "), width-numBlocksPrinted))
}
fmt.Fprint(buf, ansiReset)
fmt.Fprint(buf, "] ", percentage(numFinished, s.Total))
if ansiColors {
// move cursor to start of line so the bar is overridden next print
fmt.Fprint(buf, positionLeft)
} else {
// cannot move cursor, so newline
fmt.Fprintln(buf)
}
out.Write(buf.Bytes())
}
// percentage returns the percentage of n out of total as a string
func percentage(n, total int) string {
if total == 0 {
return "-"
}
f := float64(n) / float64(total)
return fmt.Sprintf("%.1f%c", f*100.0, '%')
}