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// Copyright 2020 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package gitutil
import (
"fmt"
"net/url"
"strings"
"github.com/gogs/git-module"
"gogs.io/gogs/internal/lazyregexp"
)
var scpSyntax = lazyregexp.New(`^([a-zA-Z0-9_]+@)?([a-zA-Z0-9._-]+):(.*)$`)
// InferSubmoduleURL returns the inferred external URL of the submodule at best effort.
// The `baseURL` should be the URL of the current repository. If the submodule URL looks
// like a relative path, it assumes that the submodule is another repository on the same
// Gogs instance by appending it to the `baseURL` with the commit.
func InferSubmoduleURL(baseURL string, mod *git.Submodule) string {
if !strings.HasSuffix(baseURL, "/") {
baseURL += "/"
}
raw := strings.TrimSuffix(mod.URL, "/")
raw = strings.TrimSuffix(raw, ".git")
if strings.HasPrefix(raw, "../") {
return fmt.Sprintf("%s%s/commit/%s", baseURL, raw, mod.Commit)
}
parsed, err := url.Parse(raw)
if err != nil {
// Try parse as SCP syntax again
match := scpSyntax.FindAllStringSubmatch(raw, -1)
if len(match) == 0 {
return mod.URL
}
parsed = &url.URL{
Scheme: "http",
Host: match[0][2],
Path: match[0][3],
}
}
switch parsed.Scheme {
case "http", "https":
raw = parsed.String()
case "ssh":
raw = fmt.Sprintf("http://%s%s", parsed.Hostname(), parsed.Path)
default:
return raw
}
return fmt.Sprintf("%s/commit/%s", raw, mod.Commit)
}
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