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