# all files / __root__/ mute.js

77.03% Statements 57/74
57.14% Branches 28/49
93.33% Functions 14/15
79.1% Lines 53/67

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    1461×

    1×

    1×
    7×
    7×
    7×
    7×
    7×
    7×

    7×
    7×

    1×

    1×

    1×
    10×

    1×
    6×

    1×

    1×
    5×

    1×

    1×
    8×

    1×
    2×

    1×

    5×

    1×

    5×

    1×
    2×
    2×

    1×
    2×

    1×
    2×

    1×
    25×
    13×
    8×

    8×

    8×

    20×

    1×
    2×
    2×

    2×

    2×
    2×

    3×

    1×
    1×
    1×
     var Stream = require('stream')

    module.exports = MuteStream

    // var out = new MuteStream(process.stdout)
    // argument auto-pipes
    function MuteStream (opts) {
      Stream.apply(this)
      opts = opts || {}
      this.writable = this.readable = true
      this.muted = false
      this.on('pipe', this._onpipe)
      this.replace = opts.replace

      // For readline-type situations
      // This much at the start of a line being redrawn after a ctrl char
      // is seen (such as backspace) won't be redrawn as the replacement
      this._prompt = opts.prompt || null
      this._hadControl = false
    }

    MuteStream.prototype = Object.create(Stream.prototype)

    Object.defineProperty(MuteStream.prototype, 'constructor', {
      value: MuteStream,
      enumerable: false
    })

    MuteStream.prototype.mute = function () {
      this.muted = true
    }

    MuteStream.prototype.unmute = function () {
      this.muted = false
    }

    Object.defineProperty(MuteStream.prototype, '_onpipe', {
      value: onPipe,
      enumerable: false,
      writable: true,
      configurable: true
    })

    function onPipe (src) {
      this._src = src
    }

    Object.defineProperty(MuteStream.prototype, 'isTTY', {
      get: getIsTTY,
      set: setIsTTY,
      enumerable: true,
      configurable: true
    })

    function getIsTTY () {
      return( (this._dest) ? this._dest.isTTY
            : (this._src) ? this._src.isTTY
            : false
            )
    }

    // basically just get replace the getter/setter with a regular value
    function setIsTTY (isTTY) {
      Object.defineProperty(this, 'isTTY', {
        value: isTTY,
        enumerable: true,
        writable: true,
        configurable: true
      })
    }

    Object.defineProperty(MuteStream.prototype, 'rows', {
      get: function () {
        return( this._dest ? this._dest.rows
              : this._src ? this._src.rows
              : undefined )
      }, enumerable: true, configurable: true })

    Object.defineProperty(MuteStream.prototype, 'columns', {
      get: function () {
        return( this._dest ? this._dest.columns
              : this._src ? this._src.columns
              : undefined )
      }, enumerable: true, configurable: true })

    MuteStream.prototype.pipe = function (dest, options) {
      this._dest = dest
      return Stream.prototype.pipe.call(this, dest, options)
    }

    MuteStream.prototype.pause = function () {
      Eif (this._src) return this._src.pause()
    }

    MuteStream.prototype.resume = function () {
      Eif (this._src) return this._src.resume()
    }

    MuteStream.prototype.write = function (c) {
      if (this.muted) {
        if (!this.replace) return true
        Iif (c.match(/^\u001b/)) {
          if(c.indexOf(this._prompt) === 0) {
            c = c.substr(this._prompt.length);
            c = c.replace(/./g, this.replace);
            c = this._prompt + c;
          }
          this._hadControl = true
          return this.emit('data', c)
        } else {
          Iif (this._prompt && this._hadControl &&
              c.indexOf(this._prompt) === 0) {
            this._hadControl = false
            this.emit('data', this._prompt)
            c = c.substr(this._prompt.length)
          }
          c = c.toString().replace(/./g, this.replace)
        }
      }
      this.emit('data', c)
    }

    MuteStream.prototype.end = function (c) {
      Eif (this.muted) {
        Iif (c && this.replace) {
          c = c.toString().replace(/./g, this.replace)
        } else {
          c = null
        }
      }
      Iif (c) this.emit('data', c)
      this.emit('end')
    }

    function proxy (fn) { return function () {
      var d = this._dest
      var s = this._src
      if (d && d[fn]) d[fn].apply(d, arguments)
      if (s && s[fn]) s[fn].apply(s, arguments)
    }}

    MuteStream.prototype.destroy = proxy('destroy')
    MuteStream.prototype.destroySoon = proxy('destroySoon')
    MuteStream.prototype.close = proxy('close')