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package ansi
import (
"bytes"
"github.com/charmbracelet/x/ansi/parser"
)
// Sequence represents an ANSI sequence. This can be a control sequence, escape
// sequence, a printable character, etc.
type Sequence interface {
// String returns the string representation of the sequence.
String() string
// Bytes returns the byte representation of the sequence.
Bytes() []byte
// Clone returns a copy of the sequence.
Clone() Sequence
}
// Rune represents a printable character.
type Rune rune
var _ Sequence = Rune(0)
// Bytes implements Sequence.
func (r Rune) Bytes() []byte {
return []byte(string(r))
}
// String implements Sequence.
func (r Rune) String() string {
return string(r)
}
// Clone implements Sequence.
func (r Rune) Clone() Sequence {
return r
}
// ControlCode represents a control code character. This is a character that
// is not printable and is used to control the terminal. This would be a
// character in the C0 or C1 set in the range of 0x00-0x1F and 0x80-0x9F.
type ControlCode byte
var _ Sequence = ControlCode(0)
// Bytes implements Sequence.
func (c ControlCode) Bytes() []byte {
return []byte{byte(c)}
}
// String implements Sequence.
func (c ControlCode) String() string {
return string(c)
}
// Clone implements Sequence.
func (c ControlCode) Clone() Sequence {
return c
}
// EscSequence represents an escape sequence.
type EscSequence int
var _ Sequence = EscSequence(0)
// buffer returns the buffer of the escape sequence.
func (e EscSequence) buffer() *bytes.Buffer {
var b bytes.Buffer
b.WriteByte('\x1b')
if i := parser.Intermediate(int(e)); i != 0 {
b.WriteByte(byte(i))
}
b.WriteByte(byte(e.Command()))
return &b
}
// Bytes implements Sequence.
func (e EscSequence) Bytes() []byte {
return e.buffer().Bytes()
}
// String implements Sequence.
func (e EscSequence) String() string {
return e.buffer().String()
}
// Clone implements Sequence.
func (e EscSequence) Clone() Sequence {
return e
}
// Command returns the command byte of the escape sequence.
func (e EscSequence) Command() int {
return parser.Command(int(e))
}
// Intermediate returns the intermediate byte of the escape sequence.
func (e EscSequence) Intermediate() int {
return parser.Intermediate(int(e))
}
// SosSequence represents a SOS sequence.
type SosSequence struct {
// Data contains the raw data of the sequence.
Data []byte
}
var _ Sequence = &SosSequence{}
// Clone implements Sequence.
func (s SosSequence) Clone() Sequence {
return SosSequence{Data: append([]byte(nil), s.Data...)}
}
// Bytes implements Sequence.
func (s SosSequence) Bytes() []byte {
return s.buffer().Bytes()
}
// String implements Sequence.
func (s SosSequence) String() string {
return s.buffer().String()
}
func (s SosSequence) buffer() *bytes.Buffer {
var b bytes.Buffer
b.WriteByte('\x1b')
b.WriteByte('X')
b.Write(s.Data)
b.WriteString("\x1b\\")
return &b
}
// PmSequence represents a PM sequence.
type PmSequence struct {
// Data contains the raw data of the sequence.
Data []byte
}
var _ Sequence = &PmSequence{}
// Clone implements Sequence.
func (s PmSequence) Clone() Sequence {
return PmSequence{Data: append([]byte(nil), s.Data...)}
}
// Bytes implements Sequence.
func (s PmSequence) Bytes() []byte {
return s.buffer().Bytes()
}
// String implements Sequence.
func (s PmSequence) String() string {
return s.buffer().String()
}
// buffer returns the buffer of the PM sequence.
func (s PmSequence) buffer() *bytes.Buffer {
var b bytes.Buffer
b.WriteByte('\x1b')
b.WriteByte('^')
b.Write(s.Data)
b.WriteString("\x1b\\")
return &b
}
// ApcSequence represents an APC sequence.
type ApcSequence struct {
// Data contains the raw data of the sequence.
Data []byte
}
var _ Sequence = &ApcSequence{}
// Clone implements Sequence.
func (s ApcSequence) Clone() Sequence {
return ApcSequence{Data: append([]byte(nil), s.Data...)}
}
// Bytes implements Sequence.
func (s ApcSequence) Bytes() []byte {
return s.buffer().Bytes()
}
// String implements Sequence.
func (s ApcSequence) String() string {
return s.buffer().String()
}
// buffer returns the buffer of the APC sequence.
func (s ApcSequence) buffer() *bytes.Buffer {
var b bytes.Buffer
b.WriteByte('\x1b')
b.WriteByte('_')
b.Write(s.Data)
b.WriteString("\x1b\\")
return &b
}
|
