From 15c0b25d011f37e7c20aeca9eaf461f78285b8d9 Mon Sep 17 00:00:00 2001
From: Alex Pilon <apilon@hashicorp.com>
Date: Fri, 22 Feb 2019 18:24:37 -0500
Subject: deps: github.com/hashicorp/terraform@sdk-v0.11-with-go-modules
 Updated via: go get github.com/hashicorp/terraform@sdk-v0.11-with-go-modules
 and go mod tidy

---
 vendor/github.com/mitchellh/cli/ui.go | 187 ++++++++++++++++++++++++++++++++++
 1 file changed, 187 insertions(+)
 create mode 100644 vendor/github.com/mitchellh/cli/ui.go

(limited to 'vendor/github.com/mitchellh/cli/ui.go')

diff --git a/vendor/github.com/mitchellh/cli/ui.go b/vendor/github.com/mitchellh/cli/ui.go
new file mode 100644
index 0000000..a2d6f94
--- /dev/null
+++ b/vendor/github.com/mitchellh/cli/ui.go
@@ -0,0 +1,187 @@
+package cli
+
+import (
+	"bufio"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"os/signal"
+	"strings"
+
+	"github.com/bgentry/speakeasy"
+	"github.com/mattn/go-isatty"
+)
+
+// Ui is an interface for interacting with the terminal, or "interface"
+// of a CLI. This abstraction doesn't have to be used, but helps provide
+// a simple, layerable way to manage user interactions.
+type Ui interface {
+	// Ask asks the user for input using the given query. The response is
+	// returned as the given string, or an error.
+	Ask(string) (string, error)
+
+	// AskSecret asks the user for input using the given query, but does not echo
+	// the keystrokes to the terminal.
+	AskSecret(string) (string, error)
+
+	// Output is called for normal standard output.
+	Output(string)
+
+	// Info is called for information related to the previous output.
+	// In general this may be the exact same as Output, but this gives
+	// Ui implementors some flexibility with output formats.
+	Info(string)
+
+	// Error is used for any error messages that might appear on standard
+	// error.
+	Error(string)
+
+	// Warn is used for any warning messages that might appear on standard
+	// error.
+	Warn(string)
+}
+
+// BasicUi is an implementation of Ui that just outputs to the given
+// writer. This UI is not threadsafe by default, but you can wrap it
+// in a ConcurrentUi to make it safe.
+type BasicUi struct {
+	Reader      io.Reader
+	Writer      io.Writer
+	ErrorWriter io.Writer
+}
+
+func (u *BasicUi) Ask(query string) (string, error) {
+	return u.ask(query, false)
+}
+
+func (u *BasicUi) AskSecret(query string) (string, error) {
+	return u.ask(query, true)
+}
+
+func (u *BasicUi) ask(query string, secret bool) (string, error) {
+	if _, err := fmt.Fprint(u.Writer, query+" "); err != nil {
+		return "", err
+	}
+
+	// Register for interrupts so that we can catch it and immediately
+	// return...
+	sigCh := make(chan os.Signal, 1)
+	signal.Notify(sigCh, os.Interrupt)
+	defer signal.Stop(sigCh)
+
+	// Ask for input in a go-routine so that we can ignore it.
+	errCh := make(chan error, 1)
+	lineCh := make(chan string, 1)
+	go func() {
+		var line string
+		var err error
+		if secret && isatty.IsTerminal(os.Stdin.Fd()) {
+			line, err = speakeasy.Ask("")
+		} else {
+			r := bufio.NewReader(u.Reader)
+			line, err = r.ReadString('\n')
+		}
+		if err != nil {
+			errCh <- err
+			return
+		}
+
+		lineCh <- strings.TrimRight(line, "\r\n")
+	}()
+
+	select {
+	case err := <-errCh:
+		return "", err
+	case line := <-lineCh:
+		return line, nil
+	case <-sigCh:
+		// Print a newline so that any further output starts properly
+		// on a new line.
+		fmt.Fprintln(u.Writer)
+
+		return "", errors.New("interrupted")
+	}
+}
+
+func (u *BasicUi) Error(message string) {
+	w := u.Writer
+	if u.ErrorWriter != nil {
+		w = u.ErrorWriter
+	}
+
+	fmt.Fprint(w, message)
+	fmt.Fprint(w, "\n")
+}
+
+func (u *BasicUi) Info(message string) {
+	u.Output(message)
+}
+
+func (u *BasicUi) Output(message string) {
+	fmt.Fprint(u.Writer, message)
+	fmt.Fprint(u.Writer, "\n")
+}
+
+func (u *BasicUi) Warn(message string) {
+	u.Error(message)
+}
+
+// PrefixedUi is an implementation of Ui that prefixes messages.
+type PrefixedUi struct {
+	AskPrefix       string
+	AskSecretPrefix string
+	OutputPrefix    string
+	InfoPrefix      string
+	ErrorPrefix     string
+	WarnPrefix      string
+	Ui              Ui
+}
+
+func (u *PrefixedUi) Ask(query string) (string, error) {
+	if query != "" {
+		query = fmt.Sprintf("%s%s", u.AskPrefix, query)
+	}
+
+	return u.Ui.Ask(query)
+}
+
+func (u *PrefixedUi) AskSecret(query string) (string, error) {
+	if query != "" {
+		query = fmt.Sprintf("%s%s", u.AskSecretPrefix, query)
+	}
+
+	return u.Ui.AskSecret(query)
+}
+
+func (u *PrefixedUi) Error(message string) {
+	if message != "" {
+		message = fmt.Sprintf("%s%s", u.ErrorPrefix, message)
+	}
+
+	u.Ui.Error(message)
+}
+
+func (u *PrefixedUi) Info(message string) {
+	if message != "" {
+		message = fmt.Sprintf("%s%s", u.InfoPrefix, message)
+	}
+
+	u.Ui.Info(message)
+}
+
+func (u *PrefixedUi) Output(message string) {
+	if message != "" {
+		message = fmt.Sprintf("%s%s", u.OutputPrefix, message)
+	}
+
+	u.Ui.Output(message)
+}
+
+func (u *PrefixedUi) Warn(message string) {
+	if message != "" {
+		message = fmt.Sprintf("%s%s", u.WarnPrefix, message)
+	}
+
+	u.Ui.Warn(message)
+}
-- 
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