build: Add some required modules for node

1 files changed, 426 insertions, 0 deletions

diff --git a/node_modules/yargs/lib/command.js b/node_modules/yargs/lib/command.js
new file mode 100644
index 0000000..65322db
--- /dev/null
+++ b/node_modules/yargs/lib/command.js
@@ -0,0 +1,426 @@
+'use strict'
+
+const inspect = require('util').inspect
+const path = require('path')
+const Parser = require('yargs-parser')
+
+const DEFAULT_MARKER = /(^\*)|(^\$0)/
+
+// handles parsing positional arguments,
+// and populating argv with said positional
+// arguments.
+module.exports = function command (yargs, usage, validation) {
+  const self = {}
+  let handlers = {}
+  let aliasMap = {}
+  let defaultCommand
+  self.addHandler = function addHandler (cmd, description, builder, handler, middlewares) {
+    let aliases = []
+    handler = handler || (() => {})
+    middlewares = middlewares || []
+    if (Array.isArray(cmd)) {
+      aliases = cmd.slice(1)
+      cmd = cmd[0]
+    } else if (typeof cmd === 'object') {
+      let command = (Array.isArray(cmd.command) || typeof cmd.command === 'string') ? cmd.command : moduleName(cmd)
+      if (cmd.aliases) command = [].concat(command).concat(cmd.aliases)
+      self.addHandler(command, extractDesc(cmd), cmd.builder, cmd.handler, cmd.middlewares)
+      return
+    }
+
+    // allow a module to be provided instead of separate builder and handler
+    if (typeof builder === 'object' && builder.builder && typeof builder.handler === 'function') {
+      self.addHandler([cmd].concat(aliases), description, builder.builder, builder.handler, builder.middlewares)
+      return
+    }
+
+    // parse positionals out of cmd string
+    const parsedCommand = self.parseCommand(cmd)
+
+    // remove positional args from aliases only
+    aliases = aliases.map(alias => self.parseCommand(alias).cmd)
+
+    // check for default and filter out '*''
+    let isDefault = false
+    const parsedAliases = [parsedCommand.cmd].concat(aliases).filter((c) => {
+      if (DEFAULT_MARKER.test(c)) {
+        isDefault = true
+        return false
+      }
+      return true
+    })
+
+    // standardize on $0 for default command.
+    if (parsedAliases.length === 0 && isDefault) parsedAliases.push('$0')
+
+    // shift cmd and aliases after filtering out '*'
+    if (isDefault) {
+      parsedCommand.cmd = parsedAliases[0]
+      aliases = parsedAliases.slice(1)
+      cmd = cmd.replace(DEFAULT_MARKER, parsedCommand.cmd)
+    }
+
+    // populate aliasMap
+    aliases.forEach((alias) => {
+      aliasMap[alias] = parsedCommand.cmd
+    })
+
+    if (description !== false) {
+      usage.command(cmd, description, isDefault, aliases)
+    }
+
+    handlers[parsedCommand.cmd] = {
+      original: cmd,
+      description: description,
+      handler,
+      builder: builder || {},
+      middlewares: middlewares || [],
+      demanded: parsedCommand.demanded,
+      optional: parsedCommand.optional
+    }
+
+    if (isDefault) defaultCommand = handlers[parsedCommand.cmd]
+  }
+
+  self.addDirectory = function addDirectory (dir, context, req, callerFile, opts) {
+    opts = opts || {}
+    // disable recursion to support nested directories of subcommands
+    if (typeof opts.recurse !== 'boolean') opts.recurse = false
+    // exclude 'json', 'coffee' from require-directory defaults
+    if (!Array.isArray(opts.extensions)) opts.extensions = ['js']
+    // allow consumer to define their own visitor function
+    const parentVisit = typeof opts.visit === 'function' ? opts.visit : o => o
+    // call addHandler via visitor function
+    opts.visit = function visit (obj, joined, filename) {
+      const visited = parentVisit(obj, joined, filename)
+      // allow consumer to skip modules with their own visitor
+      if (visited) {
+        // check for cyclic reference
+        // each command file path should only be seen once per execution
+        if (~context.files.indexOf(joined)) return visited
+        // keep track of visited files in context.files
+        context.files.push(joined)
+        self.addHandler(visited)
+      }
+      return visited
+    }
+    require('require-directory')({ require: req, filename: callerFile }, dir, opts)
+  }
+
+  // lookup module object from require()d command and derive name
+  // if module was not require()d and no name given, throw error
+  function moduleName (obj) {
+    const mod = require('which-module')(obj)
+    if (!mod) throw new Error(`No command name given for module: ${inspect(obj)}`)
+    return commandFromFilename(mod.filename)
+  }
+
+  // derive command name from filename
+  function commandFromFilename (filename) {
+    return path.basename(filename, path.extname(filename))
+  }
+
+  function extractDesc (obj) {
+    for (let keys = ['describe', 'description', 'desc'], i = 0, l = keys.length, test; i < l; i++) {
+      test = obj[keys[i]]
+      if (typeof test === 'string' || typeof test === 'boolean') return test
+    }
+    return false
+  }
+
+  self.parseCommand = function parseCommand (cmd) {
+    const extraSpacesStrippedCommand = cmd.replace(/\s{2,}/g, ' ')
+    const splitCommand = extraSpacesStrippedCommand.split(/\s+(?![^[]*]|[^<]*>)/)
+    const bregex = /\.*[\][<>]/g
+    const parsedCommand = {
+      cmd: (splitCommand.shift()).replace(bregex, ''),
+      demanded: [],
+      optional: []
+    }
+    splitCommand.forEach((cmd, i) => {
+      let variadic = false
+      cmd = cmd.replace(/\s/g, '')
+      if (/\.+[\]>]/.test(cmd) && i === splitCommand.length - 1) variadic = true
+      if (/^\[/.test(cmd)) {
+        parsedCommand.optional.push({
+          cmd: cmd.replace(bregex, '').split('|'),
+          variadic
+        })
+      } else {
+        parsedCommand.demanded.push({
+          cmd: cmd.replace(bregex, '').split('|'),
+          variadic
+        })
+      }
+    })
+    return parsedCommand
+  }
+
+  self.getCommands = () => Object.keys(handlers).concat(Object.keys(aliasMap))
+
+  self.getCommandHandlers = () => handlers
+
+  self.hasDefaultCommand = () => !!defaultCommand
+
+  self.runCommand = function runCommand (command, yargs, parsed, commandIndex) {
+    let aliases = parsed.aliases
+    const commandHandler = handlers[command] || handlers[aliasMap[command]] || defaultCommand
+    const currentContext = yargs.getContext()
+    let numFiles = currentContext.files.length
+    const parentCommands = currentContext.commands.slice()
+
+    // what does yargs look like after the buidler is run?
+    let innerArgv = parsed.argv
+    let innerYargs = null
+    let positionalMap = {}
+    if (command) {
+      currentContext.commands.push(command)
+      currentContext.fullCommands.push(commandHandler.original)
+    }
+    if (typeof commandHandler.builder === 'function') {
+      // a function can be provided, which builds
+      // up a yargs chain and possibly returns it.
+      innerYargs = commandHandler.builder(yargs.reset(parsed.aliases))
+      // if the builder function did not yet parse argv with reset yargs
+      // and did not explicitly set a usage() string, then apply the
+      // original command string as usage() for consistent behavior with
+      // options object below.
+      if (yargs.parsed === false) {
+        if (shouldUpdateUsage(yargs)) {
+          yargs.getUsageInstance().usage(
+            usageFromParentCommandsCommandHandler(parentCommands, commandHandler),
+            commandHandler.description
+          )
+        }
+        innerArgv = innerYargs ? innerYargs._parseArgs(null, null, true, commandIndex) : yargs._parseArgs(null, null, true, commandIndex)
+      } else {
+        innerArgv = yargs.parsed.argv
+      }
+
+      if (innerYargs && yargs.parsed === false) aliases = innerYargs.parsed.aliases
+      else aliases = yargs.parsed.aliases
+    } else if (typeof commandHandler.builder === 'object') {
+      // as a short hand, an object can instead be provided, specifying
+      // the options that a command takes.
+      innerYargs = yargs.reset(parsed.aliases)
+      if (shouldUpdateUsage(innerYargs)) {
+        innerYargs.getUsageInstance().usage(
+          usageFromParentCommandsCommandHandler(parentCommands, commandHandler),
+          commandHandler.description
+        )
+      }
+      Object.keys(commandHandler.builder).forEach((key) => {
+        innerYargs.option(key, commandHandler.builder[key])
+      })
+      innerArgv = innerYargs._parseArgs(null, null, true, commandIndex)
+      aliases = innerYargs.parsed.aliases
+    }
+
+    if (!yargs._hasOutput()) {
+      positionalMap = populatePositionals(commandHandler, innerArgv, currentContext, yargs)
+    }
+
+    // we apply validation post-hoc, so that custom
+    // checks get passed populated positional arguments.
+    if (!yargs._hasOutput()) yargs._runValidation(innerArgv, aliases, positionalMap, yargs.parsed.error)
+
+    if (commandHandler.handler && !yargs._hasOutput()) {
+      yargs._setHasOutput()
+      if (commandHandler.middlewares.length > 0) {
+        const middlewareArgs = commandHandler.middlewares.reduce(function (initialObj, middleware) {
+          return Object.assign(initialObj, middleware(innerArgv))
+        }, {})
+        Object.assign(innerArgv, middlewareArgs)
+      }
+      const handlerResult = commandHandler.handler(innerArgv)
+      if (handlerResult && typeof handlerResult.then === 'function') {
+        handlerResult.then(
+          null,
+          (error) => yargs.getUsageInstance().fail(null, error)
+        )
+      }
+    }
+
+    if (command) {
+      currentContext.commands.pop()
+      currentContext.fullCommands.pop()
+    }
+    numFiles = currentContext.files.length - numFiles
+    if (numFiles > 0) currentContext.files.splice(numFiles * -1, numFiles)
+
+    return innerArgv
+  }
+
+  function shouldUpdateUsage (yargs) {
+    return !yargs.getUsageInstance().getUsageDisabled() &&
+      yargs.getUsageInstance().getUsage().length === 0
+  }
+
+  function usageFromParentCommandsCommandHandler (parentCommands, commandHandler) {
+    const c = DEFAULT_MARKER.test(commandHandler.original) ? commandHandler.original.replace(DEFAULT_MARKER, '').trim() : commandHandler.original
+    const pc = parentCommands.filter((c) => { return !DEFAULT_MARKER.test(c) })
+    pc.push(c)
+    return `$0 ${pc.join(' ')}`
+  }
+
+  self.runDefaultBuilderOn = function (yargs) {
+    if (shouldUpdateUsage(yargs)) {
+      // build the root-level command string from the default string.
+      const commandString = DEFAULT_MARKER.test(defaultCommand.original)
+        ? defaultCommand.original : defaultCommand.original.replace(/^[^[\]<>]*/, '$0 ')
+      yargs.getUsageInstance().usage(
+        commandString,
+        defaultCommand.description
+      )
+    }
+    const builder = defaultCommand.builder
+    if (typeof builder === 'function') {
+      builder(yargs)
+    } else {
+      Object.keys(builder).forEach((key) => {
+        yargs.option(key, builder[key])
+      })
+    }
+  }
+
+  // transcribe all positional arguments "command <foo> <bar> [apple]"
+  // onto argv.
+  function populatePositionals (commandHandler, argv, context, yargs) {
+    argv._ = argv._.slice(context.commands.length) // nuke the current commands
+    const demanded = commandHandler.demanded.slice(0)
+    const optional = commandHandler.optional.slice(0)
+    const positionalMap = {}
+
+    validation.positionalCount(demanded.length, argv._.length)
+
+    while (demanded.length) {
+      const demand = demanded.shift()
+      populatePositional(demand, argv, positionalMap)
+    }
+
+    while (optional.length) {
+      const maybe = optional.shift()
+      populatePositional(maybe, argv, positionalMap)
+    }
+
+    argv._ = context.commands.concat(argv._)
+
+    postProcessPositionals(argv, positionalMap, self.cmdToParseOptions(commandHandler.original))
+
+    return positionalMap
+  }
+
+  function populatePositional (positional, argv, positionalMap, parseOptions) {
+    const cmd = positional.cmd[0]
+    if (positional.variadic) {
+      positionalMap[cmd] = argv._.splice(0).map(String)
+    } else {
+      if (argv._.length) positionalMap[cmd] = [String(argv._.shift())]
+    }
+  }
+
+  // we run yargs-parser against the positional arguments
+  // applying the same parsing logic used for flags.
+  function postProcessPositionals (argv, positionalMap, parseOptions) {
+    // combine the parsing hints we've inferred from the command
+    // string with explicitly configured parsing hints.
+    const options = Object.assign({}, yargs.getOptions())
+    options.default = Object.assign(parseOptions.default, options.default)
+    options.alias = Object.assign(parseOptions.alias, options.alias)
+    options.array = options.array.concat(parseOptions.array)
+
+    const unparsed = []
+    Object.keys(positionalMap).forEach((key) => {
+      positionalMap[key].map((value) => {
+        unparsed.push(`--${key}`)
+        unparsed.push(value)
+      })
+    })
+
+    // short-circuit parse.
+    if (!unparsed.length) return
+
+    const parsed = Parser.detailed(unparsed, options)
+
+    if (parsed.error) {
+      yargs.getUsageInstance().fail(parsed.error.message, parsed.error)
+    } else {
+      // only copy over positional keys (don't overwrite
+      // flag arguments that were already parsed).
+      const positionalKeys = Object.keys(positionalMap)
+      Object.keys(positionalMap).forEach((key) => {
+        [].push.apply(positionalKeys, parsed.aliases[key])
+      })
+
+      Object.keys(parsed.argv).forEach((key) => {
+        if (positionalKeys.indexOf(key) !== -1) {
+          argv[key] = parsed.argv[key]
+        }
+      })
+    }
+  }
+
+  self.cmdToParseOptions = function (cmdString) {
+    const parseOptions = {
+      array: [],
+      default: {},
+      alias: {},
+      demand: {}
+    }
+
+    const parsed = self.parseCommand(cmdString)
+    parsed.demanded.forEach((d) => {
+      const cmds = d.cmd.slice(0)
+      const cmd = cmds.shift()
+      if (d.variadic) {
+        parseOptions.array.push(cmd)
+        parseOptions.default[cmd] = []
+      }
+      cmds.forEach((c) => {
+        parseOptions.alias[cmd] = c
+      })
+      parseOptions.demand[cmd] = true
+    })
+
+    parsed.optional.forEach((o) => {
+      const cmds = o.cmd.slice(0)
+      const cmd = cmds.shift()
+      if (o.variadic) {
+        parseOptions.array.push(cmd)
+        parseOptions.default[cmd] = []
+      }
+      cmds.forEach((c) => {
+        parseOptions.alias[cmd] = c
+      })
+    })
+
+    return parseOptions
+  }
+
+  self.reset = () => {
+    handlers = {}
+    aliasMap = {}
+    defaultCommand = undefined
+    return self
+  }
+
+  // used by yargs.parse() to freeze
+  // the state of commands such that
+  // we can apply .parse() multiple times
+  // with the same yargs instance.
+  let frozen
+  self.freeze = () => {
+    frozen = {}
+    frozen.handlers = handlers
+    frozen.aliasMap = aliasMap
+    frozen.defaultCommand = defaultCommand
+  }
+  self.unfreeze = () => {
+    handlers = frozen.handlers
+    aliasMap = frozen.aliasMap
+    defaultCommand = frozen.defaultCommand
+    frozen = undefined
+  }
+
+  return self
+}