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activate.js
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activate.js
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// activate a version of a package
// this presumes that it's been installed
// no need to worry about dependencies, because they were
// installed into the child package anyhow.
var npm = require("../npm")
, fs = require("./utils/graceful-fs")
, log = require("./utils/log")
, path = require("path")
, rm = require("./utils/rm-rf")
, chain = require("./utils/chain")
, lifecycle = require("./utils/lifecycle")
, readJson = require("./utils/read-json")
, link = require("./utils/link")
, linkIfExists = link.ifExists
, semver = require("semver")
, asyncMap = require("./utils/async-map")
, loadPackageDefaults = require("./utils/load-package-defaults")
module.exports = activate
activate.usage =
"npm activate <name>@<version> [<name>@<version> ...]"
activate.completion = function (args, index, cb) {
var installedPkgs = require("./utils/completion/installed-packages")
installedPkgs(args, index, true, true, cb)
}
function activate (args, cb) {
// make sure package and version exists.
// If there's already an active version, then deactivate it.
// first, link .npm/{pkg}/{version} to .npm/{pkg}/{active}
// then, link the things in the root without a version to the active one.
if (!args.length) return cb(new Error(activate.usage))
asyncMap(args, preActivate, function (er, data) {
log.silly(args, "preActivate over")
if (er) return cb(er)
asyncMap
( data
, function (d, cb) {
var from = path.join(npm.dir, d.name, d.version)
, to = path.join(npm.dir, d.name, "active")
link(from, to, cb)
}
, function (d, cb) {
var fromMain = path.join(npm.dir, d.name, "active", "main.js")
, toMain = path.join(npm.root, d.name+".js")
linkIfExists(fromMain, toMain, cb)
}
// todo: remove this step. 0.1.28
// required because old deps will be linked with - rather than @
, function (d, cb) {
var fromLib = path.join(npm.root, d.name + "-" + d.version)
, toLib = path.join(npm.root, d.name)
linkIfExists(fromLib, toLib, cb)
}
// if both @ and - exist, then this will overwrite the kludge one.
, function (d, cb) {
var fromLib = path.join(npm.root, d.name + "@" + d.version)
, toLib = path.join(npm.root, d.name)
linkIfExists(fromLib, toLib, cb)
}
, linkBins
, linkMans
, function (er) {
if (er) return cb(er)
asyncMap(data, postActivate, cb)
}
)
})
}
function postActivate (data, cb) {
chain
( [lifecycle, data, "activate"]
, [lifecycle, data, "postactivate"]
, cb
)
}
function preActivate (arg, cb) {
var args = arg.split("@")
, pkg = args.shift()
, version = args.join("@")
, to = path.join(npm.dir, pkg, "active")
, jsonFile = path.join(npm.dir, pkg, version, "package", "package.json")
if (!version) cb(new Error("Please specify a version to activate: "+pkg))
chain
( function (cb) { npm.commands.deactivate([pkg], function () { cb() }) }
, function (cb) {
fs.lstat(to, function (er, stat) {
if (!er) return fs.readlink(to, function (er, active) {
cb(new Error("Implicit deactivate failed.\n"+
pkg+"@"+path.dirname(active)+" still active."))
})
else cb()
})
}
, function (er) {
if (er) return cb(er)
readJson(jsonFile, function (er, data) {
if (er) return cb(er)
data.version = version
data._id = data.name + "@" + data.version
npm.set(data)
loadPackageDefaults(data, function (er, data) {
if (er) return cb(er)
log.silly(data._id, "defaults loaded")
lifecycle(data, "preactivate", function (er) { cb(er, data) })
})
})
}
)
}
function linkMans (pkg, cb) {
log.verbose(pkg._id, "activate linkMans")
log.silly(pkg.man, "activate linkMans")
var manroot = npm.config.get("manroot")
if (!pkg.man || !manroot) return cb()
asyncMap(pkg.man, function (man, cb) {
var parseMan = man.match(/(.*)\.([0-9]+)(\.gz)?$/)
, stem = parseMan[1]
, sxn = parseMan[2]
, gz = parseMan[3] || ""
, bn = path.basename(stem)
, manStem = path.join( manroot
, "man"+sxn
, (bn.indexOf(pkg.name) === 0 ? bn
: pkg.name + "-" + bn)
)
, suff = pkg.version + "." + sxn + gz
, manDest = manStem + "." + sxn + gz
log.silly(manDest, "manDest")
linkIfExists(manStem+"-"+suff, manDest, function (er) {
if (er) return cb(er)
linkIfExists(manStem+"@"+suff, manDest, cb)
})
}, cb)
}
function linkBins (pkg, cb) {
log.verbose(pkg._id, "activate linkBins")
log.silly(pkg.bin, "activate linkBins")
var binroot = npm.config.get("binroot")
if (!pkg.bin || !binroot) return cb()
asyncMap(Object.keys(pkg.bin), function (i, cb) {
var to = path.join(binroot, i)
, v = pkg.version
linkIfExists(to+"-"+v, to, function (er) {
if (er) return cb(er)
linkIfExists(to+"@"+v, to, cb)
})
}, cb)
}