chore: vendor

vendor/github.com/charmbracelet/x/ansi/sequence.go

@@ -0,0 +1,199 @@
+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
+}