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package clipper
import "bytes"
type Multi struct {
Clip Clipboard
data map[string][][]byte
}
func (m *Multi) Init() {
m.data = map[string][][]byte{
"clipboard": [][]byte{},
"primary": [][]byte{},
}
}
func (m *Multi) full(reg string) []byte {
content := m.data[reg]
buf := &bytes.Buffer{}
for _, s := range content {
buf.Write(s)
}
return buf.Bytes()
}
func (m *Multi) text(reg string, num int) []byte {
content := m.data[reg]
if len(content) <= num {
return nil
}
return content[num]
}
func (m *Multi) ReadCursor(reg string, num, ncursors int) ([]byte, error) {
clip, err := m.Clip.ReadAll(reg)
if err != nil {
return nil, err
}
if m.IsValid(reg, clip, ncursors) {
return m.text(reg, num), nil
}
return clip, nil
}
func (m *Multi) WriteCursor(reg string, p []byte, num, ncursors int) error {
if len(m.data[reg]) != ncursors {
m.data[reg] = make([][]byte, ncursors)
}
if num >= ncursors {
return nil
}
m.data[reg][num] = p
return m.Clip.WriteAll(reg, m.full(reg))
}
func (m *Multi) IsValid(reg string, system []byte, ncursors int) bool {
if len(m.data[reg]) != ncursors {
return false
}
return bytes.Equal(system, m.full(reg))
}
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