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boilerplate.go
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/
boilerplate.go
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package boilerplate
import (
"archive/zip"
"errors"
"io"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"github.com/aisk/logp"
"github.com/cheggaaa/pb"
"github.com/fatih/color"
"github.com/leancloud/lean-cli/utils"
"github.com/leancloud/lean-cli/version"
"github.com/levigross/grequests"
"github.com/mattn/go-colorable"
)
// don't know why archive/zip.Reader.File[0].FileInfo().IsDir() always return true,
// this is a trick hack to void this.
func isDir(path string) bool {
return os.IsPathSeparator(path[len(path)-1])
}
func extractAndWriteFile(f *zip.File, dest string) error {
rc, err := f.Open()
if err != nil {
return err
}
defer rc.Close()
path := filepath.Join(dest, f.Name)
if isDir(f.Name) {
if err := os.MkdirAll(path, f.Mode()); err != nil {
return err
}
} else {
// Use os.Create() since Zip don't store file permissions.
f, err := os.Create(path)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, rc)
if err != nil {
return err
}
}
return nil
}
// FetchRepo will download the boilerplate from remote and extract to ${dest}/folder
func FetchRepo(boil *Boilerplate, dest string, appID string) error {
if err := os.Mkdir(dest, 0775); err != nil {
return err
}
repoURL := "https://lcinternal-cloud-code-update.leanapp.cn" + boil.URL
dir, err := ioutil.TempDir("", "leanengine")
if err != nil {
return err
}
defer os.RemoveAll(dir)
resp, err := grequests.Get(repoURL, &grequests.RequestOptions{
UserAgent: "LeanCloud-CLI/" + version.Version,
})
if err != nil {
return err
}
defer resp.Close()
if resp.StatusCode != 200 {
return errors.New(utils.FormatServerErrorResult(resp.String()))
}
zipFilePath := filepath.Join(dir, "getting-started.zip")
err = DownloadToFile(resp, zipFilePath)
if err != nil {
return err
}
logp.Info("Creating project...")
zipFile, err := zip.OpenReader(zipFilePath)
if err != nil {
return err
}
defer zipFile.Close()
for _, f := range zipFile.File {
err := extractAndWriteFile(f, dest)
if err != nil {
return err
}
}
// TODO: Change value of boil.Homepage for English site.
logp.Info("Creating ", boil.Name, " succeeded. Please refer to our website ", boil.Homepage, " for documentation about ", boil.Name)
return nil
}
type Category struct {
Name string `json:"name"`
Boilerplates []Boilerplate `json:"boilerplates"`
}
type Boilerplate struct {
Name string `json:"name"`
Homepage string `json:"homepage"`
URL string `json:"url"`
}
// GetBoilerplates returns all the boilerplate with name and url
func GetBoilerplates() ([]Category, error) {
resp, err := grequests.Get("https://lcinternal-cloud-code-update.leanapp.cn/boilerplates.json", &grequests.RequestOptions{
UserAgent: "LeanCloud-CLI/" + version.Version,
})
if err != nil {
return nil, err
}
var result []Category
err = resp.JSON(&result)
return result, err
}
// DownloadToFile allows you to download the contents of the response to a file
func DownloadToFile(r *grequests.Response, fileName string) error {
if r.Error != nil {
return r.Error
}
fd, err := os.Create(fileName)
if err != nil {
return err
}
defer r.Close() // This is a noop if we use the internal ByteBuffer
defer fd.Close()
if length, err := strconv.Atoi(r.Header.Get("Content-Length")); err == nil {
bar := pb.New(length).SetUnits(pb.U_BYTES).SetMaxWidth(80)
bar.Output = colorable.NewColorableStderr()
bar.Prefix(color.GreenString("[INFO]") + " Downloading templates")
bar.Start()
defer bar.Finish()
reader := bar.NewProxyReader(r)
if _, err := io.Copy(fd, reader); err != nil && err != io.EOF {
return err
}
} else {
if _, err := io.Copy(fd, r); err != nil && err != io.EOF {
return err
}
}
return nil
}