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73 lines
1.7 KiB
Go

package download
import (
"fmt"
"io"
"io/fs"
"io/ioutil"
"net/http"
"os"
"time"
"github.com/forget-the-bright/j/internal/pkg/errs"
"github.com/k0kubun/go-ansi"
"github.com/schollz/progressbar/v3"
)
// Download 下载资源并另存为
func Download(srcURL string, filename string, flag int, perm fs.FileMode, withProgress bool) (size int64, err error) {
resp, err := http.Get(srcURL)
if err != nil {
return 0, errs.NewDownloadError(srcURL, err)
}
defer resp.Body.Close()
f, err := os.OpenFile(filename, flag, perm)
if err != nil {
return 0, errs.NewDownloadError(srcURL, err)
}
defer f.Close()
var dst io.Writer
if withProgress {
bar := progressbar.NewOptions64(
resp.ContentLength,
progressbar.OptionEnableColorCodes(true),
progressbar.OptionSetTheme(progressbar.Theme{
Saucer: "=",
SaucerHead: ">",
SaucerPadding: " ",
BarStart: "[",
BarEnd: "]",
}),
progressbar.OptionSetWidth(15),
progressbar.OptionSetDescription("Downloading"),
progressbar.OptionSetWriter(ansi.NewAnsiStdout()),
progressbar.OptionShowBytes(true),
progressbar.OptionThrottle(65*time.Millisecond),
progressbar.OptionShowCount(),
progressbar.OptionOnCompletion(func() {
_, _ = fmt.Fprint(ansi.NewAnsiStdout(), "\n")
}),
// progressbar.OptionSpinnerType(35),
// progressbar.OptionFullWidth(),
)
_ = bar.RenderBlank()
dst = io.MultiWriter(f, bar)
} else {
dst = f
}
return io.Copy(dst, resp.Body)
}
// DownloadAsBytes 返回下载资源的原始字节切片
func DownloadAsBytes(srcURL string) (data []byte, err error) {
resp, err := http.Get(srcURL)
if err != nil {
return nil, err
}
defer resp.Body.Close()
return ioutil.ReadAll(resp.Body)
}