webp_server_go/prefetch.go
2020-03-07 13:09:32 +08:00

55 lines
1.5 KiB
Go

package main
import (
"bufio"
"fmt"
"os"
"path"
"path/filepath"
"strconv"
"strings"
log "github.com/sirupsen/logrus"
)
func PrefetchImages(confImgPath string, ExhaustPath string, QUALITY string) {
fmt.Println(`Prefetch will convert all your images to webp,
it may take some time and consume a lot of CPU resource. Do you want to proceed(Y/n)`)
reader := bufio.NewReader(os.Stdin)
char, _, _ := reader.ReadRune() //y Y enter
// maximum ongoing prefetch is depending on your core of CPU
log.Infof("Prefetching using %d cores", jobs)
var finishChan = make(chan int, jobs)
for i := 0; i < jobs; i++ {
finishChan <- 0
}
if char == 121 || char == 10 || char == 89 {
//prefetch, recursive through the dir
all := FileCount(confImgPath)
count := 0
err := filepath.Walk(confImgPath,
func(picAbsPath string, info os.FileInfo, err error) error {
if err != nil {
return err
}
// RawImagePath string, ImgFilename string, reqURI string
proposedURI := strings.Replace(picAbsPath, confImgPath, "", 1)
_, p2 := GenWebpAbs(picAbsPath, ExhaustPath, info.Name(), proposedURI)
q, _ := strconv.ParseFloat(QUALITY, 32)
_ = os.MkdirAll(path.Dir(p2), 0755)
go WebpEncoder(picAbsPath, p2, float32(q), false, finishChan)
count += <-finishChan
//progress bar
_, _ = fmt.Fprintf(os.Stdout, "[Webp Server started] - convert in progress: %d/%d\r", count, all)
return nil
})
if err != nil {
log.Debug(err)
}
}
_, _ = fmt.Fprintf(os.Stdout, "Prefetch completeY(^_^)Y\n\n")
}