--- /dev/null
+'use strict'
+var url = require('url')
+var gitHosts = require('./git-host-info.js')
+var GitHost = module.exports = require('./git-host.js')
+
+var protocolToRepresentationMap = {
+ 'git+ssh': 'sshurl',
+ 'git+https': 'https',
+ 'ssh': 'sshurl',
+ 'git': 'git'
+}
+
+function protocolToRepresentation (protocol) {
+ if (protocol.substr(-1) === ':') protocol = protocol.slice(0, -1)
+ return protocolToRepresentationMap[protocol] || protocol
+}
+
+var authProtocols = {
+ 'git:': true,
+ 'https:': true,
+ 'git+https:': true,
+ 'http:': true,
+ 'git+http:': true
+}
+
+module.exports.fromUrl = function (giturl) {
+ if (giturl == null || giturl === '') return
+ var url = fixupUnqualifiedGist(
+ isGitHubShorthand(giturl) ? 'github:' + giturl : giturl
+ )
+ var parsed = parseGitUrl(url)
+ var matches = Object.keys(gitHosts).map(function (gitHostName) {
+ var gitHostInfo = gitHosts[gitHostName]
+ var auth = null
+ if (parsed.auth && authProtocols[parsed.protocol]) {
+ auth = decodeURIComponent(parsed.auth)
+ }
+ var committish = parsed.hash ? decodeURIComponent(parsed.hash.substr(1)) : null
+ var user = null
+ var project = null
+ var defaultRepresentation = null
+ if (parsed.protocol === gitHostName + ':') {
+ user = decodeURIComponent(parsed.host)
+ project = parsed.path && decodeURIComponent(parsed.path.replace(/^[/](.*?)(?:[.]git)?$/, '$1'))
+ defaultRepresentation = 'shortcut'
+ } else {
+ if (parsed.host !== gitHostInfo.domain) return
+ if (!gitHostInfo.protocols_re.test(parsed.protocol)) return
+ var pathmatch = gitHostInfo.pathmatch
+ var matched = parsed.path.match(pathmatch)
+ if (!matched) return
+ if (matched[1] != null) user = decodeURIComponent(matched[1])
+ if (matched[2] != null) project = decodeURIComponent(matched[2])
+ defaultRepresentation = protocolToRepresentation(parsed.protocol)
+ }
+ return new GitHost(gitHostName, user, auth, project, committish, defaultRepresentation)
+ }).filter(function (gitHostInfo) { return gitHostInfo })
+ if (matches.length !== 1) return
+ return matches[0]
+}
+
+function isGitHubShorthand (arg) {
+ // Note: This does not fully test the git ref format.
+ // See https://www.kernel.org/pub/software/scm/git/docs/git-check-ref-format.html
+ //
+ // The only way to do this properly would be to shell out to
+ // git-check-ref-format, and as this is a fast sync function,
+ // we don't want to do that. Just let git fail if it turns
+ // out that the commit-ish is invalid.
+ // GH usernames cannot start with . or -
+ return /^[^:@%/\s.-][^:@%/\s]*[/][^:@\s/%]+(?:#.*)?$/.test(arg)
+}
+
+function fixupUnqualifiedGist (giturl) {
+ // necessary for round-tripping gists
+ var parsed = url.parse(giturl)
+ if (parsed.protocol === 'gist:' && parsed.host && !parsed.path) {
+ return parsed.protocol + '/' + parsed.host
+ } else {
+ return giturl
+ }
+}
+
+function parseGitUrl (giturl) {
+ if (typeof giturl !== 'string') giturl = '' + giturl
+ var matched = giturl.match(/^([^@]+)@([^:]+):[/]?((?:[^/]+[/])?[^/]+?)(?:[.]git)?(#.*)?$/)
+ if (!matched) return url.parse(giturl)
+ return {
+ protocol: 'git+ssh:',
+ slashes: true,
+ auth: matched[1],
+ host: matched[2],
+ port: null,
+ hostname: matched[2],
+ hash: matched[4],
+ search: null,
+ query: null,
+ pathname: '/' + matched[3],
+ path: '/' + matched[3],
+ href: 'git+ssh://' + matched[1] + '@' + matched[2] +
+ '/' + matched[3] + (matched[4] || '')
+ }
+}