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var Ignore = require("fstream-ignore")
, inherits = require("inherits")
, path = require("path")
, fs = require("fs")
module.exports = Packer
inherits(Packer, Ignore)
function Packer (props) {
if (!(this instanceof Packer)) {
return new Packer(props)
}
if (typeof props === "string") {
props = { path: props }
}
props.ignoreFiles = props.ignoreFiles || [ ".npmignore",
".gitignore",
"package.json" ]
Ignore.call(this, props)
this.bundled = props.bundled
this.bundleLinks = props.bundleLinks
this.package = props.package
// only do the magic bundling stuff for the node_modules folder that
// lives right next to a package.json file.
this.bundleMagic = this.parent &&
this.parent.packageRoot &&
this.basename === "node_modules"
// in a node_modules folder, resolve symbolic links to
// bundled dependencies when creating the package.
props.follow = this.follow = this.bundleMagic
// console.error("follow?", this.path, props.follow)
if (this === this.root ||
this.parent &&
this.parent.bundleMagic &&
this.basename.charAt(0) !== ".") {
this.readBundledLinks()
}
this.on("entryStat", function (entry, props) {
// files should *always* get into tarballs
// in a user-writable state, even if they're
// being installed from some wackey vm-mounted
// read-only filesystem.
entry.mode = props.mode = props.mode | 0200
})
}
Packer.prototype.readBundledLinks = function () {
if (this._paused) {
this.once("resume", this.addIgnoreFiles)
return
}
this.pause()
fs.readdir(this.path + "/node_modules", function (er, list) {
// no harm if there's no bundle
var l = list && list.length
if (er || l === 0) return this.resume()
var errState = null
, then = function then (er) {
if (errState) return
if (er) return errState = er, this.resume()
if (-- l === 0) return this.resume()
}.bind(this)
list.forEach(function (pkg) {
if (pkg.charAt(0) === ".") return then()
var pd = this.path + "/node_modules/" + pkg
fs.realpath(pd, function (er, rp) {
if (er) return then()
this.bundleLinks = this.bundleLinks || {}
this.bundleLinks[pkg] = rp
then()
}.bind(this))
}, this)
}.bind(this))
}
Packer.prototype.applyIgnores = function (entry, partial, entryObj) {
// package.json files can never be ignored.
if (entry === "package.json") return true
// readme files should never be ignored.
if (entry.match(/^readme(\.[^\.]*)$/i)) return true
// special rules. see below.
if (entry === "node_modules" && this.packageRoot) return true
// some files are *never* allowed under any circumstances
if (entry === ".git" ||
entry === ".lock-wscript" ||
entry.match(/^\.wafpickle-[0-9]+$/) ||
entry === "CVS" ||
entry === ".svn" ||
entry === ".hg" ||
entry.match(/^\..*\.swp$/) ||
entry === ".DS_Store" ||
entry.match(/^\._/) ||
entry === "npm-debug.log"
) {
return false
}
// in a node_modules folder, we only include bundled dependencies
// also, prevent packages in node_modules from being affected
// by rules set in the containing package, so that
// bundles don't get busted.
// Also, once in a bundle, everything is installed as-is
// To prevent infinite cycles in the case of cyclic deps that are
// linked with npm link, even in a bundle, deps are only bundled
// if they're not already present at a higher level.
if (this.bundleMagic) {
// bubbling up. stop here and allow anything the bundled pkg allows
if (entry.indexOf("/") !== -1) return true
// never include the .bin. It's typically full of platform-specific
// stuff like symlinks and .cmd files anyway.
if (entry === ".bin") return false
var shouldBundle = false
// the package root.
var p = this.parent
// the package before this one.
var pp = p && p.parent
// if this entry has already been bundled, and is a symlink,
// and it is the *same* symlink as this one, then exclude it.
if (pp && pp.bundleLinks && this.bundleLinks &&
pp.bundleLinks[entry] &&
pp.bundleLinks[entry] === this.bundleLinks[entry]) {
return false
}
// since it's *not* a symbolic link, if we're *already* in a bundle,
// then we should include everything.
if (pp && pp.package && pp.basename === "node_modules") {
return true
}
// only include it at this point if it's a bundleDependency
var bd = this.package && this.package.bundleDependencies
var shouldBundle = bd && bd.indexOf(entry) !== -1
// if we're not going to bundle it, then it doesn't count as a bundleLink
// if (this.bundleLinks && !shouldBundle) delete this.bundleLinks[entry]
return shouldBundle
}
// if (this.bundled) return true
return Ignore.prototype.applyIgnores.call(this, entry, partial, entryObj)
}
Packer.prototype.addIgnoreFiles = function () {
var entries = this.entries
// if there's a .npmignore, then we do *not* want to
// read the .gitignore.
if (-1 !== entries.indexOf(".npmignore")) {
var i = entries.indexOf(".gitignore")
if (i !== -1) {
entries.splice(i, 1)
}
}
this.entries = entries
Ignore.prototype.addIgnoreFiles.call(this)
}
Packer.prototype.readRules = function (buf, e) {
if (e !== "package.json") {
return Ignore.prototype.readRules.call(this, buf, e)
}
buf = buf.toString().trim()
if (buf.length === 0) return []
try {
var p = this.package = JSON.parse(buf)
} catch (er) {
// just pretend it's a normal old file, not magic at all.
return []
}
if (this === this.root) {
this.bundleLinks = this.bundleLinks || {}
this.bundleLinks[p.name] = this._path
}
this.packageRoot = true
this.emit("package", p)
// make bundle deps predictable
if (p.bundledDependencies && !p.bundleDependencies) {
p.bundleDependencies = p.bundledDependencies
delete p.bundledDependencies
}
if (!p.files || !Array.isArray(p.files)) return []
// ignore everything except what's in the files array.
return ["*"].concat(p.files.map(function (f) {
return "!" + f
})).concat(p.files.map(function (f) {
return "!" + f.replace(/\/+$/, "") + "/**"
}))
}
Packer.prototype.getChildProps = function (stat) {
var props = Ignore.prototype.getChildProps.call(this, stat)
props.package = this.package
props.bundled = this.bundled && this.bundled.slice(0)
props.bundleLinks = this.bundleLinks &&
Object.create(this.bundleLinks)
// Directories have to be read as Packers
// otherwise fstream.Reader will create a DirReader instead.
if (stat.isDirectory()) {
props.type = this.constructor
}
// only follow symbolic links directly in the node_modules folder.
props.follow = false
return props
}
var order =
[ "package.json"
, ".npmignore"
, ".gitignore"
, /^README(\.md)?$/
, "LICENCE"
, "LICENSE"
, /\.js$/ ]
Packer.prototype.sort = function (a, b) {
for (var i = 0, l = order.length; i < l; i ++) {
var o = order[i]
if (typeof o === "string") {
if (a === o) return -1
if (b === o) return 1
} else {
if (a.match(o)) return -1
if (b.match(o)) return 1
}
}
// deps go in the back
if (a === "node_modules") return 1
if (b === "node_modules") return -1
return Ignore.prototype.sort.call(this, a, b)
}
Packer.prototype.emitEntry = function (entry) {
if (this._paused) {
this.once("resume", this.emitEntry.bind(this, entry))
return
}
// if there is a .gitignore, then we're going to
// rename it to .npmignore in the output.
if (entry.basename === ".gitignore") {
entry.basename = ".npmignore"
entry.path = path.resolve(entry.dirname, entry.basename)
}
// all *.gyp files are renamed to binding.gyp for node-gyp
// but only when they are in the same folder as a package.json file.
if (entry.basename.match(/\.gyp$/) &&
this.entries.indexOf("package.json") !== -1) {
entry.basename = "binding.gyp"
entry.path = path.resolve(entry.dirname, entry.basename)
}
// skip over symbolic links
if (entry.type === "SymbolicLink") {
entry.abort()
return
}
if (entry.type !== "Directory") {
// make it so that the folder in the tarball is named "package"
var h = path.dirname((entry.root || entry).path)
, t = entry.path.substr(h.length + 1).replace(/^[^\/\\]+/, "package")
, p = h + "/" + t
entry.path = p
entry.dirname = path.dirname(p)
return Ignore.prototype.emitEntry.call(this, entry)
}
// we don't want empty directories to show up in package
// tarballs.
// don't emit entry events for dirs, but still walk through
// and read them. This means that we need to proxy up their
// entry events so that those entries won't be missed, since
// .pipe() doesn't do anythign special with "child" events, on
// with "entry" events.
var me = this
entry.on("entry", function (e) {
if (e.parent === entry) {
e.parent = me
me.emit("entry", e)
}
})
entry.on("package", this.emit.bind(this, "package"))
}