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package extension
import (
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"github.com/cli/cli/v2/api"
"github.com/cli/cli/v2/internal/ghinstance"
"github.com/cli/cli/v2/internal/ghrepo"
)
func hasScript(httpClient *http.Client, repo ghrepo.Interface) (hs bool, err error) {
path := fmt.Sprintf("repos/%s/%s/contents/%s",
repo.RepoOwner(), repo.RepoName(), repo.RepoName())
url := ghinstance.RESTPrefix(repo.RepoHost()) + path
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return
}
resp, err := httpClient.Do(req)
if err != nil {
return
}
defer resp.Body.Close()
if resp.StatusCode == 404 {
return
}
if resp.StatusCode > 299 {
err = api.HandleHTTPError(resp)
return
}
hs = true
return
}
type releaseAsset struct {
Name string
APIURL string `json:"url"`
}
type release struct {
Tag string `json:"tag_name"`
Assets []releaseAsset
}
// downloadAsset downloads a single asset to the given file path.
func downloadAsset(httpClient *http.Client, asset releaseAsset, destPath string) error {
req, err := http.NewRequest("GET", asset.APIURL, nil)
if err != nil {
return err
}
req.Header.Set("Accept", "application/octet-stream")
resp, err := httpClient.Do(req)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode > 299 {
return api.HandleHTTPError(resp)
}
f, err := os.OpenFile(destPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0755)
if err != nil {
return err
}
defer f.Close()
_, err = io.Copy(f, resp.Body)
return err
}
var releaseNotFoundErr = errors.New("release not found")
var commitNotFoundErr = errors.New("commit not found")
// fetchLatestRelease finds the latest published release for a repository.
func fetchLatestRelease(httpClient *http.Client, baseRepo ghrepo.Interface) (*release, error) {
path := fmt.Sprintf("repos/%s/%s/releases/latest", baseRepo.RepoOwner(), baseRepo.RepoName())
url := ghinstance.RESTPrefix(baseRepo.RepoHost()) + path
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
resp, err := httpClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode > 299 {
return nil, api.HandleHTTPError(resp)
}
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
var r release
err = json.Unmarshal(b, &r)
if err != nil {
return nil, err
}
return &r, nil
}
// fetchReleaseFromTag finds release by tag name for a repository
func fetchReleaseFromTag(httpClient *http.Client, baseRepo ghrepo.Interface, tagName string) (*release, error) {
fullRepoName := fmt.Sprintf("%s/%s", baseRepo.RepoOwner(), baseRepo.RepoName())
path := fmt.Sprintf("repos/%s/releases/tags/%s", fullRepoName, tagName)
url := ghinstance.RESTPrefix(baseRepo.RepoHost()) + path
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
resp, err := httpClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode == 404 {
return nil, releaseNotFoundErr
}
if resp.StatusCode > 299 {
return nil, api.HandleHTTPError(resp)
}
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
var r release
err = json.Unmarshal(b, &r)
if err != nil {
return nil, err
}
return &r, nil
}
// fetchCommitSHA finds full commit SHA from a target ref in a repo
func fetchCommitSHA(httpClient *http.Client, baseRepo ghrepo.Interface, targetRef string) (string, error) {
path := fmt.Sprintf("repos/%s/%s/commits/%s", baseRepo.RepoOwner(), baseRepo.RepoName(), targetRef)
url := ghinstance.RESTPrefix(baseRepo.RepoHost()) + path
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return "", err
}
req.Header.Set("Accept", "application/vnd.github.VERSION.sha")
resp, err := httpClient.Do(req)
if err != nil {
return "", err
}
defer resp.Body.Close()
if resp.StatusCode == 422 {
return "", commitNotFoundErr
}
if resp.StatusCode > 299 {
return "", api.HandleHTTPError(resp)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return "", err
}
return string(body), nil
}