libgo/go/cmd/go/internal/base/flag.go

   1 // Copyright 2017 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package base
   6
   7 import (
   8         "flag"
   9
  10         "cmd/go/internal/cfg"
  11         "cmd/go/internal/str"
  12 )
  13
  14 // A StringsFlag is a command-line flag that interprets its argument
  15 // as a space-separated list of possibly-quoted strings.
  16 type StringsFlag []string
  17
  18 func (v *StringsFlag) Set(s string) error {
  19         var err error
  20         *v, err = str.SplitQuotedFields(s)
  21         if *v == nil {
  22                 *v = []string{}
  23         }
  24         return err
  25 }
  26
  27 func (v *StringsFlag) String() string {
  28         return "<StringsFlag>"
  29 }
  30
  31 // AddBuildFlagsNX adds the -n and -x build flags to the flag set.
  32 func AddBuildFlagsNX(flags *flag.FlagSet) {
  33         flags.BoolVar(&cfg.BuildN, "n", false, "")
  34         flags.BoolVar(&cfg.BuildX, "x", false, "")
  35 }