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module.exports = completion
completion.usage = "npm completion >> ~/.bashrc\n"
+ "npm completion >> ~/.zshrc\n"
+ "source <(npm completion)"
var npm = require("./npm.js")
, npmconf = require("npmconf")
, configDefs = npmconf.defs
, configTypes = configDefs.types
, shorthands = configDefs.shorthands
, nopt = require("nopt")
, configNames = Object.keys(configTypes).filter(function (e) {
return e.charAt(0) !== "_"
})
, shorthandNames = Object.keys(shorthands)
, allConfs = configNames.concat(shorthandNames)
, once = require("once")
completion.completion = function (opts, cb) {
if (opts.w > 3) return cb()
var fs = require("graceful-fs")
, path = require("path")
, bashExists = null
, zshExists = null
, bashProfExists = null
fs.stat(path.resolve(process.env.HOME, ".bashrc"), function (er, b) {
bashExists = !er
next()
})
fs.stat(path.resolve(process.env.HOME, ".zshrc"), function (er, b) {
zshExists = !er
next()
})
function next () {
if (zshExists === null || bashExists === null) return
var out = []
if (zshExists) out.push("~/.zshrc")
if (bashExists) out.push("~/.bashrc")
if (opts.w === 2) out = out.map(function (m) {
return [">>", m]
})
cb(null, out)
}
}
function completion (args, cb) {
if (process.platform === "win32") {
var e = new Error("npm completion not supported on windows")
e.code = "ENOTSUP"
e.errno = require("constants").ENOTSUP
return cb(e)
}
// if the COMP_* isn't in the env, then just dump the script.
if (process.env.COMP_CWORD === undefined
||process.env.COMP_LINE === undefined
||process.env.COMP_POINT === undefined
) return dumpScript(cb)
console.error(process.env.COMP_CWORD)
console.error(process.env.COMP_LINE)
console.error(process.env.COMP_POINT)
//console.log("abracadabrasauce\nabracad cat monger")
//if (Math.random() * 3 < 1) console.log("man\\ bear\\ pig")
//else if (Math.random() * 3 < 1)
// console.log("porkchop\\ sandwiches\nporkman")
//else console.log("encephylophagy")
// get the partial line and partial word,
// if the point isn't at the end.
// ie, tabbing at: npm foo b|ar
var w = +process.env.COMP_CWORD
, words = args.map(unescape)
, word = words[w]
, line = process.env.COMP_LINE
, point = +process.env.COMP_POINT
, lineLength = line.length
, partialLine = line.substr(0, point)
, partialWords = words.slice(0, w)
// figure out where in that last word the point is.
var partialWord = args[w]
, i = partialWord.length
while (partialWord.substr(0, i) !== partialLine.substr(-1*i) && i > 0) {
i --
}
partialWord = unescape(partialWord.substr(0, i))
partialWords.push(partialWord)
var opts = { words : words
, w : w
, word : word
, line : line
, lineLength : line.length
, point : point
, partialLine : partialLine
, partialWords : partialWords
, partialWord : partialWord
, raw: args
}
cb = wrapCb(cb, opts)
console.error(opts)
if (partialWords.slice(0, -1).indexOf("--") === -1) {
if (word.charAt(0) === "-") return configCompl(opts, cb)
if (words[w - 1]
&& words[w - 1].charAt(0) === "-"
&& !isFlag(words[w - 1])) {
// awaiting a value for a non-bool config.
// don't even try to do this for now
console.error("configValueCompl")
return configValueCompl(opts, cb)
}
}
// try to find the npm command.
// it's the first thing after all the configs.
// take a little shortcut and use npm's arg parsing logic.
// don't have to worry about the last arg being implicitly
// boolean'ed, since the last block will catch that.
var parsed = opts.conf =
nopt(configTypes, shorthands, partialWords.slice(0, -1), 0)
// check if there's a command already.
console.error(parsed)
var cmd = parsed.argv.remain[1]
if (!cmd) return cmdCompl(opts, cb)
Object.keys(parsed).forEach(function (k) {
npm.config.set(k, parsed[k])
})
// at this point, if words[1] is some kind of npm command,
// then complete on it.
// otherwise, do nothing
cmd = npm.commands[cmd]
if (cmd && cmd.completion) return cmd.completion(opts, cb)
// nothing to do.
cb()
}
function dumpScript (cb) {
var fs = require("graceful-fs")
, path = require("path")
, p = path.resolve(__dirname, "utils/completion.sh")
// The Darwin patch below results in callbacks first for the write and then
// for the error handler, so make sure we only call our callback once.
cb = once(cb)
fs.readFile(p, "utf8", function (er, d) {
if (er) return cb(er)
d = d.replace(/^\#\!.*?\n/, "")
process.stdout.write(d, function (n) { cb() })
process.stdout.on("error", function (er) {
// Darwin is a real dick sometimes.
//
// This is necessary because the "source" or "." program in
// bash on OS X closes its file argument before reading
// from it, meaning that you get exactly 1 write, which will
// work most of the time, and will always raise an EPIPE.
//
// Really, one should not be tossing away EPIPE errors, or any
// errors, so casually. But, without this, `. <(npm completion)`
// can never ever work on OS X.
if (er.errno === "EPIPE") er = null
cb(er)
})
})
}
function unescape (w) {
if (w.charAt(0) === "\"") return w.replace(/^"|"$/g, "")
else return w.replace(/\\ /g, " ")
}
function escape (w) {
if (!w.match(/\s+/)) return w
return "\"" + w + "\""
}
// The command should respond with an array. Loop over that,
// wrapping quotes around any that have spaces, and writing
// them to stdout. Use console.log, not the outfd config.
// If any of the items are arrays, then join them with a space.
// Ie, returning ["a", "b c", ["d", "e"]] would allow it to expand
// to: "a", "b c", or "d" "e"
function wrapCb (cb, opts) { return function (er, compls) {
if (!Array.isArray(compls)) compls = compls ? [compls] : []
compls = compls.map(function (c) {
if (Array.isArray(c)) c = c.map(escape).join(" ")
else c = escape(c)
return c
})
if (opts.partialWord) compls = compls.filter(function (c) {
return c.indexOf(opts.partialWord) === 0
})
console.error([er && er.stack, compls, opts.partialWord])
if (er || compls.length === 0) return cb(er)
console.log(compls.join("\n"))
cb()
}}
// the current word has a dash. Return the config names,
// with the same number of dashes as the current word has.
function configCompl (opts, cb) {
var word = opts.word
, split = word.match(/^(-+)((?:no-)*)(.*)$/)
, dashes = split[1]
, no = split[2]
, conf = split[3]
, confs = allConfs
, flags = configNames.filter(isFlag)
console.error(flags)
return cb(null, allConfs.map(function (c) {
return dashes + c
}).concat(flags.map(function (f) {
return dashes + (no || "no-") + f
})))
}
// expand with the valid values of various config values.
// not yet implemented.
function configValueCompl (opts, cb) {
console.error('configValue', opts)
return cb(null, [])
}
// check if the thing is a flag or not.
function isFlag (word) {
// shorthands never take args.
var split = word.match(/^(-*)((?:no-)+)?(.*)$/)
, dashes = split[1]
, no = split[2]
, conf = split[3]
return no || configTypes[conf] === Boolean || shorthands[conf]
}
// complete against the npm commands
function cmdCompl (opts, cb) {
return cb(null, npm.fullList)
}