Mukan Erkin Törük
c32551b6f7
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110 lines
2.5 KiB
Go
110 lines
2.5 KiB
Go
package url
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import (
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"fmt"
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"net/url"
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"regexp"
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"strings"
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"git.cw.tr/mukan-network/mukan-ignite/ignite/pkg/errors"
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)
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// URL represents a Git URL in any supported protocol.
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type URL struct {
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// Protocol is the protocol of the endpoint (e.g. ssh, https).
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Protocol string
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// Host is the host.
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Host string
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// Path is the repository path.
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Path string
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}
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var (
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scpLikeUrlRegExp = regexp.MustCompile(`^[^@]+@[^:]+:.+`)
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scpSubMatchRegExp = regexp.MustCompile(`^(?:(?P<user>[^@]+)@)?(?P<host>[^:\s]+):(?:(?P<port>[0-9]{1,5}):)?(?P<path>[^\\].*)$`)
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)
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// New creates a new URL object.
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func New(endpoint string) (URL, error) {
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if scpLikeUrlRegExp.MatchString(endpoint) {
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return parseSCPLike(endpoint), nil
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}
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u, err := url.Parse(endpoint)
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if err == nil && u.Scheme == "ssh" {
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return parseSCPLike(endpoint), nil
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}
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return parseURL(endpoint)
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}
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func (u URL) Compare(cp URL) error {
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switch {
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case u.Host != cp.Host:
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return errors.Errorf("host mismatch for %s != %s", u.Host, cp.Host)
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case u.Path != cp.Path:
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return errors.Errorf("path mismatch for %s != %s", u.Path, cp.Path)
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default:
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return nil
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}
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}
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func (u URL) String() string {
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if u.Protocol == "ssh" {
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return fmt.Sprintf("git@%s:%s.git", u.Host, u.Path)
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}
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return fmt.Sprintf("%s://%s/%s.git", u.Protocol, u.Host, u.Path)
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}
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// parseSCPLike returns an URL object from SCP git URL.
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func parseSCPLike(endpoint string) URL {
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_, host, _, path := findScpLikeComponents(endpoint)
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return URL{
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Protocol: "ssh",
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Host: host,
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Path: strings.TrimSuffix(path, ".git"),
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}
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}
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// parseURL returns an URL object from an endpoint.
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func parseURL(endpoint string) (URL, error) {
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u, err := url.Parse(endpoint)
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if err != nil {
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return URL{}, errors.Errorf("failed to parse URL: %v", err)
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}
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if !u.IsAbs() {
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return URL{}, errors.Errorf("URL must be absolute with scheme and host: %s", endpoint)
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}
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return URL{
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Protocol: u.Scheme,
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Host: u.Hostname(),
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Path: getPath(u),
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}, nil
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}
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// findScpLikeComponents returns the user, host, port and path of the given SCP-like URL.
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func findScpLikeComponents(url string) (user, host, port, path string) {
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m := scpSubMatchRegExp.FindStringSubmatch(url)
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user = m[1]
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host = m[2]
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port = m[3]
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path = m[4]
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return m[1], m[2], m[3], m[4]
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}
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// getPath returns the path from an *url.URL.
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func getPath(u *url.URL) string {
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res := u.Path
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if u.RawQuery != "" {
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res += "?" + u.RawQuery
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}
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if u.Fragment != "" {
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res += "#" + u.Fragment
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}
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res = strings.Trim(res, "/")
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res = strings.TrimSuffix(res, ".git")
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return strings.Split(res, ":")[0]
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}
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