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// remove a package. if it has dependents, then fail, and demand that they be
// uninstalled first. If activee, then fail, and depand that it be deactivated
// first.
module.exports = uninstall
var rm = require("./utils/rm-rf")
, fs = require("fs")
, log = require("./utils/log")
, readJson = require("./utils/read-json")
, path = require("path")
, npm = require("../npm")
, chain = require("./utils/chain")
, lifecycle = require("./utils/lifecycle")
, semver = require("./utils/semver")
, readInstalled = require("./utils/read-installed")
, mkdir = require("./utils/mkdir-p")
function uninstall (args, cb) {
// TODO: remove this when it's more commonplace.
if (args.length === 2 && !semver.valid(args[0]) && semver.valid(args[1])
|| args.length === 0) {
log("http://github.com/isaacs/npm/issues/issue/91", "See:")
return cb(new Error("Usage: npm uninstall <pkg>[@<version>] [pkg[@<version>] ...]"))
}
// for each arg:
// unpack if no version found
unpackArgs(args, function (er, args) {
if (er) return cb(er)
if (!args || !args.length) return cb()
chain
( [firstPart, args]
, [secondPart, args]
, cb
)
})
}
function unpackArgs (rawArgs, cb) {
readInstalled([], function (er, installed) {
if (er) return cb(er)
var args = []
, argData = []
rawArgs.forEach(function (arg) {
arg = arg.split("@")
var ver = arg[1] || ""
, pkg = arg[0] || ""
arg = arg.join("@")
if (!installed.hasOwnProperty(pkg)) return log(arg, "not installed")
log(Object.keys(installed[pkg]), "installed "+pkg)
Object.keys(installed[pkg]).forEach(function (v) {
if (semver.satisfies(v, ver)) args.push([pkg, v])
})
})
;(function R (arg) {
if (!arg) return cb(null, argData)
var jsonFile = path.join(npm.dir,arg[0],arg[1],"package","package.json")
readJson( jsonFile
, arg[1]
, function (er, data) {
if (er) return cb(er)
data.version = arg[1]
data._id = data.name+"-"+data.version
argData.push(data)
argData[data._id] = data
R(args.pop())
}
)
})(args.pop())
})
}
function firstPart (args, cb) {
chain(args.map(function (arg) { return function (cb) {
var pkgdir = path.join(npm.dir, arg.name, arg.version)
chain
( [lifecycle, arg, "preuninstall"]
, [lifecycle, arg, "uninstall"]
, [checkActive, arg]
, [checkDependents, arg, args]
, [log, "safe to uninstall: "+arg._id, "uninstall"]
, cb
)
}}).concat(log.er(cb, "Failed safety check")))
}
// if this package is active, and auto-deactivate isn't true, then fail
function checkActive (pkg, cb) {
var version = pkg.version
, name = pkg.name
, active = path.join(npm.dir, name, "active")
fs.readlink(active, function (er, active) {
if (er) return cb() // nothing active
if (path.basename(active||"") !== version) return cb() // not active
if (!npm.config.get("auto-deactivate")) return cb(new Error(
"cannot remove active package.\n"+
" npm deactivate "+name+"\n"+
"and then retry."))
pkg._active = true
cb()
})
}
// if anything depends on this package, which isn't already in the "others" list,
// then fail horribly.
function checkDependents (pkg, others, cb) {
var depDir = path.join(npm.dir, pkg.name, pkg.version, "dependents")
fs.readdir(depDir, function (er, deps) {
if (er) return cb() // no dependents
for (var i = 0, l = deps.length; i < l; i ++) {
var dep = deps[i]
// if this dependent is on the list, then it's ok,
// because it'll be removed, too.
if (!others[dep]) return cb(new Error(
pkg.name+"@"+pkg.version+" depended upon by "+deps.join(",")+".\n"
+"Cannot remove"))
}
cb()
})
}
function secondPart (args, cb) {
var c = args.map(function (arg) { return function (cb) {
var name = arg.name
chain
( function (cb) {
if (!arg._active) return cb()
log("auto-deactivate", "uninstall "+arg._id)
npm.commands.deactivate([name], log.er(cb,
"Failed to deactivate"))
}
, [ log, "remove links", "uninstall "+arg._id]
, [ removeDependentLinks, arg ]
, [ removeLinkedDeps, arg ]
, [ log, "remove bins", "uninstall "+arg._id]
, [ removeBins, arg ]
, [ log, "remove public modules", "uninstall "+arg._id]
, [ removePublic, arg ]
, [ lifecycle, arg, "postuninstall" ]
, [ log, "remove package dir", "uninstall "+arg._id]
, [ rm, path.join(npm.dir, arg.name, arg.version) ]
, function (cb) {
fs.readdir(path.join(npm.dir, arg.name), function (er, vers) {
if (er) return cb()
if (vers.length > 0) return cb()
// remove the root of this package.
rm(path.join(npm.dir, arg.name), cb)
})
}
, [log, "complete", "uninstall "+arg._id]
, cb
)
}})
c.push(cb)
chain(c)
}
// remove the linked package lib folder.
function removePublic (data, cb) {
chain
( [ rm, path.join(npm.root, data.name+"-"+data.version) ]
, [ rm, path.join(npm.root, data.name+"-"+data.version+".js") ]
, cb
)
}
function removeBins (data, cb) {
if (!data.bin) return cb()
log(data.bin, "remove bins")
var binroot = npm.config.get("binroot")
, bins = Object.getOwnPropertyNames(data.bin)
;(function R (bin) {
if (!bin) return cb()
chain
( [rm, binroot + "/" + bin+"-"+data.version]
, function (er) {
if (er) return cb(er)
R(bins.pop())
}
)
})(bins.pop)
}
function removeDependentLinks (data, cb) {
var dependsOn = path.join(npm.dir, data.name, data.version, "dependson")
// TODO: remove this mkdir kludge
// A workaround for the fact that this dir didn't exist prior to 0.1.20
mkdir(dependsOn, function (er) {
if (er) return cb() // meh
fs.readdir(dependsOn, function (er, deps) {
if (er) return cb(er)
;(function R (er) {
if (er) return cb(er)
var dep = deps.pop()
if (!dep) return cb()
// <3 symlinks
rm(path.join( dependsOn
, dep
, "dependents"
, data.name+"-"+data.version
), R)
})()
})
})
}
function removeLinkedDeps (data, cb) {
if (!data.link) return cb()
var depLinks = []
, pkgdir = path.join(npm.dir, data.name, data.version)
for (var i in data.link) {
depLinks.push(path.join(pkgdir, "package", data.link[i]))
}
;(function R (er) {
if (er) return cb(er)
var dep = depLinks.pop()
if (!dep) return cb()
chain
( [rm, dep]
, [rm, dep+".js"]
, R
)
})()
}
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