aboutsummaryrefslogtreecommitdiffstats
path: root/cmd/utils/input.go
diff options
context:
space:
mode:
Diffstat (limited to 'cmd/utils/input.go')
-rw-r--r--cmd/utils/input.go98
1 files changed, 0 insertions, 98 deletions
diff --git a/cmd/utils/input.go b/cmd/utils/input.go
deleted file mode 100644
index 523d5a587..000000000
--- a/cmd/utils/input.go
+++ /dev/null
@@ -1,98 +0,0 @@
-// Copyright 2016 The go-ethereum Authors
-// This file is part of go-ethereum.
-//
-// go-ethereum is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// go-ethereum is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
-
-package utils
-
-import (
- "fmt"
- "strings"
-
- "github.com/peterh/liner"
-)
-
-// Holds the stdin line reader.
-// Only this reader may be used for input because it keeps
-// an internal buffer.
-var Stdin = newUserInputReader()
-
-type userInputReader struct {
- *liner.State
- warned bool
- supported bool
- normalMode liner.ModeApplier
- rawMode liner.ModeApplier
-}
-
-func newUserInputReader() *userInputReader {
- r := new(userInputReader)
- // Get the original mode before calling NewLiner.
- // This is usually regular "cooked" mode where characters echo.
- normalMode, _ := liner.TerminalMode()
- // Turn on liner. It switches to raw mode.
- r.State = liner.NewLiner()
- rawMode, err := liner.TerminalMode()
- if err != nil || !liner.TerminalSupported() {
- r.supported = false
- } else {
- r.supported = true
- r.normalMode = normalMode
- r.rawMode = rawMode
- // Switch back to normal mode while we're not prompting.
- normalMode.ApplyMode()
- }
- return r
-}
-
-func (r *userInputReader) Prompt(prompt string) (string, error) {
- if r.supported {
- r.rawMode.ApplyMode()
- defer r.normalMode.ApplyMode()
- } else {
- // liner tries to be smart about printing the prompt
- // and doesn't print anything if input is redirected.
- // Un-smart it by printing the prompt always.
- fmt.Print(prompt)
- prompt = ""
- defer fmt.Println()
- }
- return r.State.Prompt(prompt)
-}
-
-func (r *userInputReader) PasswordPrompt(prompt string) (passwd string, err error) {
- if r.supported {
- r.rawMode.ApplyMode()
- defer r.normalMode.ApplyMode()
- return r.State.PasswordPrompt(prompt)
- }
- if !r.warned {
- fmt.Println("!! Unsupported terminal, password will be echoed.")
- r.warned = true
- }
- // Just as in Prompt, handle printing the prompt here instead of relying on liner.
- fmt.Print(prompt)
- passwd, err = r.State.Prompt("")
- fmt.Println()
- return passwd, err
-}
-
-func (r *userInputReader) ConfirmPrompt(prompt string) (bool, error) {
- prompt = prompt + " [y/N] "
- input, err := r.Prompt(prompt)
- if len(input) > 0 && strings.ToUpper(input[:1]) == "Y" {
- return true, nil
- }
- return false, err
-}