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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")
, exec = require("child_process").execFile
, cache = require("./cache.js")
, asyncMap = require("slide").asyncMap
, chain = require("slide").chain
, which = require("which")
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, null, false, 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) {
var git = npm.config.get("git")
var args = [ "submodule", "update", "--init", "node_modules/", name ]
// check for git
which(git, function (err) {
if (err) {
err.code = "ENOGIT"
return cb(err)
}
exec(git, args, cb)
})
}
function addSubmodule (name, url, cb) {
var git = npm.config.get("git")
var args = [ "submodule", "add", url, "node_modules/", name ]
// check for git
which(git, function (err) {
if (err) {
err.code = "ENOGIT"
return cb(err)
}
exec(git, args, function (er) {
if (er) return cb(er)
updateSubmodule(name, cb)
})
})
}
var getSubmodules = function getSubmodules (cb) {
var git = npm.config.get("git")
var args = [ "submodule", "status" ]
// check for git
which(git, function (err) {
if (err) {
err.code = "ENOGIT"
return cb(err)
}
exec(git, args, function (er, stdout) {
if (er) return cb(er)
var 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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