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feat: improve gitlab/github readme url (#456)

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* Use GitHub API to find readme filename

* Fix lint errors and typos

* Bring back "tries to find" instead of "finds"

* Rename `readmeURL` to `apiURL`

* Don't close body

* Use GitLab API to find readme filename

* feat: improve gitlab/github readme url

Signed-off-by: Carlos A Becker <caarlos0@users.noreply.github.com>

---------

Signed-off-by: Carlos A Becker <caarlos0@users.noreply.github.com>
Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>
Co-authored-by: danielwerg <35052399+danielwerg@users.noreply.github.com>
This commit is contained in:
Carlos Alexandro Becker 2024-07-09 16:07:39 -03:00 • committed by GitHub
commit 9ebe39cd09
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5 changed files with 183 additions and 69 deletions
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57
github.go
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@ -1,50 +1,55 @@
package main
import (
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"strings"
)
// isGitHubURL tests a string to determine if it is a well-structured GitHub URL.
func isGitHubURL(s string) (string, bool) {
if strings.HasPrefix(s, "github.com/") {
s = "https://" + s
// findGitHubREADME tries to find the correct README filename in a repository using GitHub API.
func findGitHubREADME(u *url.URL) (*source, error) {
owner, repo, ok := strings.Cut(strings.TrimPrefix(u.Path, "/"), "/")
if !ok {
return nil, fmt.Errorf("invalid url: %s", u.String())
}
u, err := url.ParseRequestURI(s)
if err != nil {
return "", false
type readme struct {
DownloadURL string `json:"download_url"`
}
return u.String(), strings.ToLower(u.Host) == "github.com"
}
apiURL := fmt.Sprintf("https://api.%s/repos/%s/%s/readme", u.Hostname(), owner, repo)
// findGitHubREADME tries to find the correct README filename in a repository.
func findGitHubREADME(s string) (*source, error) {
u, err := url.ParseRequestURI(s)
// nolint:bodyclose
// it is closed on the caller
res, err := http.Get(apiURL) // nolint: gosec
if err != nil {
return nil, err
}
u.Host = "raw.githubusercontent.com"
for _, b := range readmeBranches {
for _, r := range readmeNames {
v := *u
v.Path += fmt.Sprintf("/%s/%s", b, r)
body, err := io.ReadAll(res.Body)
if err != nil {
return nil, err
}
// nolint:bodyclose
// it is closed on the caller
resp, err := http.Get(v.String())
if err != nil {
return nil, err
}
var result readme
if err := json.Unmarshal(body, &result); err != nil {
return nil, err
}
if resp.StatusCode == http.StatusOK {
return &source{resp.Body, v.String()}, nil
}
if res.StatusCode == http.StatusOK {
// nolint:bodyclose
// it is closed on the caller
resp, err := http.Get(result.DownloadURL)
if err != nil {
return nil, err
}
if resp.StatusCode == http.StatusOK {
return &source{resp.Body, result.DownloadURL}, nil
}
}