ollama/progress/bar.go
2023-11-19 13:43:21 -05:00

119 lines
2.2 KiB
Go

package progress
import (
"fmt"
"math"
"os"
"strings"
"time"
"github.com/jmorganca/ollama/format"
"golang.org/x/term"
)
type Bar struct {
message string
messageWidth int
maxValue int64
initialValue int64
currentValue int64
started time.Time
stopped time.Time
}
func NewBar(message string, maxValue, initialValue int64) *Bar {
return &Bar{
message: message,
messageWidth: -1,
maxValue: maxValue,
initialValue: initialValue,
currentValue: initialValue,
started: time.Now(),
}
}
func (b *Bar) String() string {
termWidth, _, err := term.GetSize(int(os.Stderr.Fd()))
if err != nil {
panic(err)
}
var pre, mid, suf strings.Builder
if b.message != "" {
message := strings.TrimSpace(b.message)
if b.messageWidth > 0 && len(message) > b.messageWidth {
message = message[:b.messageWidth]
}
fmt.Fprintf(&pre, "%s", message)
if b.messageWidth-pre.Len() >= 0 {
pre.WriteString(strings.Repeat(" ", b.messageWidth-pre.Len()))
}
pre.WriteString(" ")
}
fmt.Fprintf(&pre, "%3.0f%% ", math.Floor(b.percent()))
fmt.Fprintf(&suf, "(%s/%s, %s/s, %s)",
format.HumanBytes(b.currentValue),
format.HumanBytes(b.maxValue),
format.HumanBytes(int64(b.rate())),
b.elapsed())
mid.WriteString("▕")
// add 3 extra spaces: 2 boundary characters and 1 space at the end
f := termWidth - pre.Len() - suf.Len() - 3
n := int(float64(f) * b.percent() / 100)
if n > 0 {
mid.WriteString(strings.Repeat("█", n))
}
if f-n > 0 {
mid.WriteString(strings.Repeat(" ", f-n))
}
mid.WriteString("▏")
return pre.String() + mid.String() + suf.String()
}
func (b *Bar) Set(value int64) {
if value >= b.maxValue {
value = b.maxValue
b.stopped = time.Now()
}
b.currentValue = value
}
func (b *Bar) percent() float64 {
if b.maxValue > 0 {
return float64(b.currentValue) / float64(b.maxValue) * 100
}
return 0
}
func (b *Bar) rate() float64 {
elapsed := b.elapsed()
if elapsed.Seconds() > 0 {
return (float64(b.currentValue) - float64(b.initialValue)) / elapsed.Seconds()
}
return 0
}
func (b *Bar) elapsed() time.Duration {
stopped := b.stopped
if stopped.IsZero() {
stopped = time.Now()
}
return stopped.Sub(b.started).Round(time.Second)
}