forked from mirror/readline
115 lines
2.2 KiB
Go
115 lines
2.2 KiB
Go
package readline
|
|
|
|
import "io"
|
|
|
|
type Instance struct {
|
|
Config *Config
|
|
Terminal *Terminal
|
|
Operation *Operation
|
|
}
|
|
|
|
type Config struct {
|
|
// prompt supports ANSI escape sequence, so we can color some characters even in windows
|
|
Prompt string
|
|
|
|
// readline will persist historys to file where HistoryFile specified
|
|
HistoryFile string
|
|
// specify the max length of historys, it's 500 by default
|
|
HistoryLimit int
|
|
|
|
// AutoCompleter will called once user press TAB
|
|
AutoComplete AutoCompleter
|
|
|
|
// If VimMode is true, readline will in vim.insert mode by default
|
|
VimMode bool
|
|
|
|
Stdout io.Writer
|
|
Stderr io.Writer
|
|
|
|
inited bool
|
|
}
|
|
|
|
func (c *Config) Init() error {
|
|
if c.inited {
|
|
return nil
|
|
}
|
|
c.inited = true
|
|
if c.Stdout == nil {
|
|
c.Stdout = Stdout
|
|
}
|
|
if c.Stderr == nil {
|
|
c.Stderr = Stderr
|
|
}
|
|
if c.HistoryLimit < 0 {
|
|
c.HistoryLimit = 500
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func NewEx(cfg *Config) (*Instance, error) {
|
|
t, err := NewTerminal(cfg)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
rl := t.Readline()
|
|
return &Instance{
|
|
Config: cfg,
|
|
Terminal: t,
|
|
Operation: rl,
|
|
}, nil
|
|
}
|
|
|
|
func New(prompt string) (*Instance, error) {
|
|
return NewEx(&Config{Prompt: prompt})
|
|
}
|
|
|
|
func (i *Instance) SetPrompt(s string) {
|
|
i.Operation.SetPrompt(s)
|
|
}
|
|
|
|
// change hisotry persistence in runtime
|
|
func (i *Instance) SetHistoryPath(p string) {
|
|
i.Operation.SetHistoryPath(p)
|
|
}
|
|
|
|
// readline will refresh automatic when write through Stdout()
|
|
func (i *Instance) Stdout() io.Writer {
|
|
return i.Operation.Stdout()
|
|
}
|
|
|
|
// readline will refresh automatic when write through Stdout()
|
|
func (i *Instance) Stderr() io.Writer {
|
|
return i.Operation.Stderr()
|
|
}
|
|
|
|
// switch VimMode in runtime
|
|
func (i *Instance) SetVimMode(on bool) {
|
|
i.Operation.SetVimMode(on)
|
|
}
|
|
|
|
func (i *Instance) IsVimMode() bool {
|
|
return i.Operation.IsEnableVimMode()
|
|
}
|
|
|
|
func (i *Instance) ReadPassword(prompt string) ([]byte, error) {
|
|
return i.Operation.Password(prompt)
|
|
}
|
|
|
|
func (i *Instance) Readline() (string, error) {
|
|
return i.Operation.String()
|
|
}
|
|
|
|
// same as readline
|
|
func (i *Instance) ReadSlice() ([]byte, error) {
|
|
return i.Operation.Slice()
|
|
}
|
|
|
|
// we must make sure that call Close() before process exit.
|
|
func (i *Instance) Close() error {
|
|
if err := i.Terminal.Close(); err != nil {
|
|
return err
|
|
}
|
|
i.Operation.Close()
|
|
return nil
|
|
}
|