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// npm submodule <pkg>
// Check the package contents for a git repository url.
// If there is one, then create a git submodule in the node_modules folder.
module.exports = submodule
var npm = require("./npm.js")
, readJson = require("./utils/read-json.js")
, exec = require("./utils/exec.js")
, output = require("./utils/output.js")
, cache = require("./cache.js")
, asyncMap = require("slide").asyncMap
, chain = require("slide").chain
submodule.usage = "npm submodule <pkg>"
submodule.completion = require("./docs.js").completion
function submodule (args, cb) {
if (npm.config.get("global")) {
return cb(new Error("Cannot use submodule command in global mode."))
}
if (args.length === 0) return cb(submodule.usage)
asyncMap(args, function (arg, cb) {
cache.add(arg, cb)
}, function (er, pkgs) {
if (er) return cb(er)
chain(pkgs.map(function (pkg) { return function (cb) {
submodule_(pkg, cb)
}}), cb)
})
}
function submodule_ (pkg, cb) {
if (!pkg.repository
|| pkg.repository.type !== "git"
|| !pkg.repository.url) {
return cb(new Error(pkg._id + ": No git repository listed"))
}
// prefer https:// github urls
pkg.repository.url = pkg.repository.url
.replace(/^(git:\/\/)?(git@)?github.com[:\/]/, "https://github.com/")
// first get the list of submodules, and update if it's already there.
getSubmodules(function (er, modules) {
if (er) return cb(er)
// if there's already a submodule, then just update it.
if (modules.indexOf(pkg.name) !== -1) {
return updateSubmodule(pkg.name, cb)
}
addSubmodule(pkg.name, pkg.repository.url, cb)
})
}
function updateSubmodule (name, cb) {
exec( npm.config.get("git"), [ "submodule", "update", "--init"
, "node_modules/" + name ]
, null, true, npm.prefix, cb)
}
function addSubmodule (name, url, cb) {
exec( npm.config.get("git"), [ "submodule", "add", url
, "node_modules/" + name ]
, null, true, npm.prefix, function (er) {
if (er) return cb(er)
updateSubmodule(name, cb)
})
}
var getSubmodules = function getSubmodules (cb) {
exec( npm.config.get("git"), ["submodule", "status"], null, false
, npm.prefix, function (er, code, stdout, stderr) {
if (er) return cb(er)
res = stdout.trim().split(/\n/).map(function (line) {
return line.trim().split(/\s+/)[1]
}).filter(function (line) {
// only care about submodules in the node_modules folder.
return line && line.match(/^node_modules\//)
}).map(function (line) {
return line.replace(/^node_modules\//g, "")
})
// memoize.
getSubmodules = function (cb) { return cb(null, res) }
cb(null, res)
})
}
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