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var url = require("url")
var assert = require("assert")
var util = require("util")
var semver = require("semver")
var path = require("path")
var HostedGit = require("hosted-git-info")
module.exports = npa
var isWindows = process.platform === "win32" || global.FAKE_WINDOWS
var slashRe = isWindows ? /\\|[/]/ : /[/]/
var parseName = /^(?:@([^/]+?)[/])?([^/]+?)$/
var nameAt = /^(@([^/]+?)[/])?([^/]+?)@/
var debug = util.debuglog ? util.debuglog("npa")
: /\bnpa\b/i.test(process.env.NODE_DEBUG || "")
? function () {
console.error("NPA: " + util.format.apply(util, arguments).split("\n").join("\nNPA: "))
} : function () {}
function validName (name) {
if (!name) {
debug("not a name %j", name)
return false
}
var n = name.trim()
if (!n || n.charAt(0) === "."
|| !n.match(/^[a-zA-Z0-9]/)
|| n.match(/[/()&?#|<>@:%\s\\*'"!~`]/)
|| n.toLowerCase() === "node_modules"
|| n !== encodeURIComponent(n)
|| n.toLowerCase() === "favicon.ico") {
debug("not a valid name %j", name)
return false
}
return n
}
function npa (arg) {
assert.equal(typeof arg, "string")
arg = arg.trim()
var res = new Result
res.raw = arg
res.scope = null
// See if it's something like foo@...
var nameparse = arg.match(nameAt)
debug("nameparse", nameparse)
if (nameparse && validName(nameparse[3]) &&
(!nameparse[2] || validName(nameparse[2]))) {
res.name = (nameparse[1] || "") + nameparse[3]
if (nameparse[2])
res.scope = "@" + nameparse[2]
arg = arg.substr(nameparse[0].length)
} else {
res.name = null
}
res.rawSpec = arg
res.spec = arg
var urlparse = url.parse(arg)
debug("urlparse", urlparse)
// windows paths look like urls
// don't be fooled!
if (isWindows && urlparse && urlparse.protocol &&
urlparse.protocol.match(/^[a-zA-Z]:$/)) {
debug("windows url-ish local path", urlparse)
urlparse = {}
}
if (urlparse.protocol || HostedGit.fromUrl(arg)) {
return parseUrl(res, arg, urlparse)
}
// at this point, it's not a url, and not hosted
// If it's a valid name, and doesn't already have a name, then assume
// $name@"" range
//
// if it's got / chars in it, then assume that it's local.
if (res.name) {
if (arg == '') arg = 'latest'
var version = semver.valid(arg, true)
var range = semver.validRange(arg, true)
// foo@...
if (version) {
res.spec = version
res.type = "version"
} else if (range) {
res.spec = range
res.type = "range"
} else if (slashRe.test(arg)) {
parseLocal(res, arg)
} else {
res.type = "tag"
res.spec = arg
}
} else {
var p = arg.match(parseName)
if (p && validName(p[2]) &&
(!p[1] || validName(p[1]))) {
res.type = "tag"
res.spec = "latest"
res.rawSpec = ""
res.name = arg
if (p[1])
res.scope = "@" + p[1]
} else {
parseLocal(res, arg)
}
}
return res
}
function parseLocal (res, arg) {
// turns out nearly every character is allowed in fs paths
if (/\0/.test(arg)) {
throw new Error("Invalid Path: " + JSON.stringify(arg))
}
res.type = "local"
res.spec = path.resolve(arg)
}
function parseUrl (res, arg, urlparse) {
var gitHost = HostedGit.fromUrl(arg)
if (gitHost) {
res.type = "hosted"
res.spec = gitHost.toString(),
res.hosted = {
type: gitHost.type,
ssh: gitHost.ssh(),
sshUrl: gitHost.sshurl(),
httpsUrl: gitHost.https(),
gitUrl: gitHost.git(),
shortcut: gitHost.shortcut(),
directUrl: gitHost.file("package.json")
}
return res
}
// check the protocol, and then see if it's git or not
switch (urlparse.protocol) {
case "git:":
case "git+http:":
case "git+https:":
case "git+rsync:":
case "git+ftp:":
case "git+ssh:":
case "git+file:":
res.type = "git"
res.spec = arg.replace(/^git[+]/, "")
break
case "http:":
case "https:":
res.type = "remote"
res.spec = arg
break
case "file:":
res.type = "local"
res.spec = urlparse.pathname
break
default:
throw new Error("Unsupported URL Type: " + arg)
break
}
return res
}
function Result () {
if (!(this instanceof Result)) return new Result
}
Result.prototype.name = null
Result.prototype.type = null
Result.prototype.spec = null
Result.prototype.raw = null
Result.prototype.hosted = null
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