mirror of
https://github.com/joshuarubin/go-sway
synced 2024-11-22 12:02:00 +01:00
starting to work
This commit is contained in:
Joshua Rubin
commit
66e28f3069
142
client.go
Normal file
142
client.go
Normal file
@ -0,0 +1,142 @@
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package sway
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import (
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"context"
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"encoding/binary"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net"
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"os"
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"strings"
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"go.uber.org/multierr"
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)
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type client struct {
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conn net.Conn
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path string
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}
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type Client interface {
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GetTree(context.Context) (*Node, error)
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RunCommand(context.Context, string) ([]RunCommandReply, error)
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Close() error
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}
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func New(ctx context.Context) (_ Client, err error) {
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c := &client{}
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if c.path = strings.TrimSpace(os.Getenv("SWAYSOCK")); c.path == "" {
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return nil, fmt.Errorf("$SWAYSOCK is empty")
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}
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c.conn, err = (&net.Dialer{}).DialContext(ctx, "unix", c.path)
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return c, err
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}
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func (c *client) Close() error {
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return c.conn.Close()
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}
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type payloadReader struct {
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io.Reader
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}
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func (r payloadReader) Close() error {
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_, err := ioutil.ReadAll(r)
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return err
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}
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func (c *client) recvMsg(ctx context.Context) (*message, error) {
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var h header
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err := do(ctx, func() error {
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return binary.Read(c.conn, binary.LittleEndian, &h)
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})
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if err != nil {
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return nil, err
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}
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return &message{
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Type: h.Type,
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Payload: payloadReader{io.LimitReader(c.conn, int64(h.Length))},
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}, nil
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}
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func (c *client) roundTrip(ctx context.Context, t messageType, payload []byte) (*message, error) {
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if c == nil {
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return nil, fmt.Errorf("not connected")
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}
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err := do(ctx, func() error {
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err := binary.Write(c.conn, binary.LittleEndian, &header{magic, uint32(len(payload)), t})
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if err != nil {
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return nil
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}
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_, err = c.conn.Write(payload)
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return err
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})
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if err != nil {
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return nil, err
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}
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return c.recvMsg(ctx)
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}
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func (c *client) GetTree(ctx context.Context) (*Node, error) {
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b, err := c.roundTrip(ctx, messageTypeGetTree, nil)
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if err != nil {
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return nil, err
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}
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var n Node
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return &n, b.Decode(&n)
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}
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func (c *client) subscribe(ctx context.Context, events ...EventType) error {
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payload, err := json.Marshal(events)
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if err != nil {
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return err
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}
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msg, err := c.roundTrip(ctx, messageTypeSubscribe, payload)
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if err != nil {
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return err
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}
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var reply struct {
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Success bool `json:"success"`
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}
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if err = msg.Decode(&reply); err != nil {
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return err
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}
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if !reply.Success {
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return fmt.Errorf("subscribe unsuccessful")
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}
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return nil
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}
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func (c *client) RunCommand(ctx context.Context, command string) ([]RunCommandReply, error) {
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msg, err := c.roundTrip(ctx, messageTypeRunCommand, []byte(command))
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if err != nil {
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return nil, err
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}
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var replies []RunCommandReply
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if err = msg.Decode(&replies); err != nil {
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return nil, err
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}
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for _, reply := range replies {
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if !reply.Success {
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err = multierr.Append(err, fmt.Errorf("command %q unsuccessful: %v", command, reply.Error))
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}
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}
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return replies, err
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}
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9
go.mod
Normal file
9
go.mod
Normal file
@ -0,0 +1,9 @@
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module github.com/joshuarubin/go-sway
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go 1.12
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require (
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github.com/stretchr/testify v1.3.0 // indirect
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go.uber.org/atomic v1.3.2 // indirect
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go.uber.org/multierr v1.1.0
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)
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11
go.sum
Normal file
11
go.sum
Normal file
@ -0,0 +1,11 @@
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github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
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github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
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go.uber.org/atomic v1.3.2 h1:2Oa65PReHzfn29GpvgsYwloV9AVFHPDk8tYxt2c2tr4=
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go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
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go.uber.org/multierr v1.1.0 h1:HoEmRHQPVSqub6w2z2d2EOVs2fjyFRGyofhKuyDq0QI=
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go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
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69
internal.go
Normal file
69
internal.go
Normal file
@ -0,0 +1,69 @@
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package sway
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import (
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"context"
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"encoding/json"
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"io"
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)
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type header struct {
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Magic [6]byte
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Length uint32
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Type messageType
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}
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type message struct {
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Type messageType
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Payload io.ReadCloser
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}
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func (m message) Decode(v interface{}) error {
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defer m.Payload.Close()
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return json.NewDecoder(m.Payload).Decode(v)
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}
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type messageType uint32
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const (
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messageTypeRunCommand messageType = iota
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messageTypeGetWorkspaces
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messageTypeSubscribe
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messageTypeGetOutputs
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messageTypeGetTree
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messageTypeGetMarks
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messageTypeGetBarConfig
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messageTypeGetVersion
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messageTypeGetBindingModes
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messageTypeGetConfig
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messageTypeSendTick
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messageTypeSync
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)
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const (
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eventReplyTypeWorkspace messageType = 0x80000000
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eventReplyTypeMode messageType = 0x80000002
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eventReplyTypeWindow messageType = 0x80000003
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eventReplyTypeBarConfigUpdate messageType = 0x80000004
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eventReplyTypeBinding messageType = 0x80000005
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eventReplyTypeShutdown messageType = 0x80000006
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eventReplyTypeTick messageType = 0x80000007
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eventReplyTypeBarStatusUpdate messageType = 0x80000014
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)
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var magic = [6]byte{'i', '3', '-', 'i', 'p', 'c'}
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func do(ctx context.Context, fn func() error) error {
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done := make(chan struct{})
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var err error
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go func() {
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err = fn()
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close(done)
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}()
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select {
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case <-done:
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return err
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case <-ctx.Done():
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return ctx.Err()
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}
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}
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61
socket_test.go
Normal file
61
socket_test.go
Normal file
@ -0,0 +1,61 @@
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package sway_test
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import (
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"context"
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"log"
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"testing"
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"time"
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sway "github.com/joshuarubin/go-sway"
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)
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func TestSocket(t *testing.T) {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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client, err := sway.New(ctx)
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if err != nil {
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t.Fatal(err)
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}
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defer client.Close()
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n, err := client.GetTree(ctx)
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if err != nil {
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t.Fatal(err)
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}
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fh := focusHandler(client)
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fh(ctx, n.FocusedNode())
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h := sway.EventHandler{
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Window: func(ctx context.Context, e sway.WindowEvent) {
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if e.Change != sway.WindowChangeFocus {
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return
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}
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fh(ctx, e.Container.FocusedNode())
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},
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}
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err = sway.Subscribe(ctx, h, sway.EventTypeWindow, sway.EventTypeShutdown)
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if err != context.DeadlineExceeded && err != nil {
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t.Fatal(err)
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}
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}
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func focusHandler(client sway.Client) func(context.Context, *sway.Node) {
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return func(ctx context.Context, node *sway.Node) {
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if node == nil {
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return
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}
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opt := "none"
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if node.AppID == nil || *node.AppID != "kitty" {
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opt = "altwin:ctrl_win"
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}
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if _, err := client.RunCommand(ctx, `input '*' xkb_options `+opt); err != nil {
|
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log.Println(err)
|
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}
|
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}
|
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}
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90
subscribe.go
Normal file
90
subscribe.go
Normal file
@ -0,0 +1,90 @@
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package sway
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import (
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"context"
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)
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type EventType string
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const (
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||||
EventTypeWorkspace EventType = "workspace"
|
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EventTypeMode EventType = "mode"
|
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EventTypeWindow EventType = "window"
|
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EventTypeBarConfigUpdate EventType = "barconfig_update"
|
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EventTypeBinding EventType = "binding"
|
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EventTypeShutdown EventType = "shutdown"
|
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EventTypeTick EventType = "tick"
|
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EventTypeBarStatusUpdate EventType = "bar_status_update"
|
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)
|
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|
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type EventHandler struct {
|
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Workspace func(context.Context, WorkspaceEvent)
|
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Window func(context.Context, WindowEvent)
|
||||
Shutdown func(context.Context, ShutdownEvent)
|
||||
}
|
||||
|
||||
func Subscribe(ctx context.Context, handler EventHandler, events ...EventType) error {
|
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n, err := New(ctx)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer n.Close()
|
||||
|
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c := n.(*client)
|
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|
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if err = c.subscribe(ctx, events...); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for {
|
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reply, err := c.recvMsg(ctx)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
handler.process(ctx, reply)
|
||||
}
|
||||
}
|
||||
|
||||
func (h EventHandler) process(ctx context.Context, reply *message) {
|
||||
switch reply.Type {
|
||||
case eventReplyTypeWorkspace:
|
||||
if h.Workspace == nil {
|
||||
return
|
||||
}
|
||||
|
||||
var e WorkspaceEvent
|
||||
if err := reply.Decode(&e); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
h.Workspace(ctx, e)
|
||||
case eventReplyTypeMode:
|
||||
case eventReplyTypeWindow:
|
||||
if h.Window == nil {
|
||||
return
|
||||
}
|
||||
|
||||
var e WindowEvent
|
||||
if err := reply.Decode(&e); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
h.Window(ctx, e)
|
||||
case eventReplyTypeBarConfigUpdate:
|
||||
case eventReplyTypeBinding:
|
||||
case eventReplyTypeShutdown:
|
||||
if h.Shutdown == nil {
|
||||
return
|
||||
}
|
||||
|
||||
var e ShutdownEvent
|
||||
if err := reply.Decode(&e); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
h.Shutdown(ctx, e)
|
||||
case eventReplyTypeTick:
|
||||
case eventReplyTypeBarStatusUpdate:
|
||||
}
|
||||
}
|
||||
143
types.go
Normal file
143
types.go
Normal file
@ -0,0 +1,143 @@
|
||||
package sway
|
||||
|
||||
type NodeID int64
|
||||
|
||||
type NodeType string
|
||||
|
||||
const (
|
||||
NodeTypeRoot NodeType = "root"
|
||||
NodeTypeOutput NodeType = "output"
|
||||
NodeTypeCon NodeType = "con"
|
||||
NodeTypeFloatingCon NodeType = "floating_con"
|
||||
NodeTypeWorkspace NodeType = "workspace"
|
||||
)
|
||||
|
||||
type BorderStyle string
|
||||
|
||||
const (
|
||||
BorderStyleNormal BorderStyle = "normal"
|
||||
BorderStyleNone BorderStyle = "none"
|
||||
BorderStylePixel BorderStyle = "pixel"
|
||||
BorderStyleCSD BorderStyle = "csd"
|
||||
)
|
||||
|
||||
type Layout string
|
||||
|
||||
const (
|
||||
LayoutSplitH Layout = "splith"
|
||||
LayoutSplitV Layout = "splitv"
|
||||
LayoutStacked Layout = "stacked"
|
||||
LayoutTabbed Layout = "tabbed"
|
||||
LayoutOutput Layout = "output"
|
||||
)
|
||||
|
||||
type Rect struct {
|
||||
X int64 `json:"x"`
|
||||
Y int64 `json:"y"`
|
||||
Width int64 `json:"width"`
|
||||
Height int64 `json:"height"`
|
||||
}
|
||||
|
||||
type WindowProperties struct {
|
||||
Title string `json:"title"`
|
||||
Instance string `json:"instance"`
|
||||
Class string `json:"class"`
|
||||
Role string `json:"window_role"`
|
||||
TransientFor NodeID `json:"transient_for"`
|
||||
}
|
||||
|
||||
type Node struct {
|
||||
ID NodeID `json:"id"`
|
||||
Name string `json:"name"`
|
||||
Type NodeType `json:"type"`
|
||||
Border BorderStyle `json:"border"`
|
||||
CurrentBorderWidth int64 `json:"current_border_width"`
|
||||
Layout Layout `json:"layout"`
|
||||
Percent *float64 `json:"percent"`
|
||||
Rect Rect `json:"rect"`
|
||||
WindowRect Rect `json:"window_rect"`
|
||||
DecoRect Rect `json:"deco_rect"`
|
||||
Geometry Rect `json:"geometry"`
|
||||
Urgent *bool `json:"urgent"`
|
||||
Focused bool `json:"focused"`
|
||||
Focus []NodeID `json:"focus"`
|
||||
Nodes []*Node `json:"nodes"`
|
||||
FloatingNodes []*Node `json:"floating_nodes"`
|
||||
Representation *string `json:"representation"`
|
||||
AppID *string `json:"app_id"`
|
||||
PID *uint32 `json:"pid"`
|
||||
Window *int64 `json:"window"`
|
||||
WindowProperties *WindowProperties `json:"window_properties"`
|
||||
}
|
||||
|
||||
func (n *Node) FocusedNode() *Node {
|
||||
queue := []*Node{n}
|
||||
for len(queue) > 0 {
|
||||
n = queue[0]
|
||||
queue = queue[1:]
|
||||
|
||||
if n == nil {
|
||||
continue
|
||||
}
|
||||
|
||||
if n.Focused {
|
||||
return n
|
||||
}
|
||||
|
||||
queue = append(queue, n.Nodes...)
|
||||
queue = append(queue, n.FloatingNodes...)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Event interface{}
|
||||
|
||||
type WorkspaceChange string
|
||||
|
||||
const (
|
||||
WorkspaceChangeInit WorkspaceChange = "init"
|
||||
WorkspaceChangeEmpty WorkspaceChange = "empty"
|
||||
WorkspaceChangeFocus WorkspaceChange = "focus"
|
||||
WorkspaceChangeMove WorkspaceChange = "move"
|
||||
WorkspaceChangeRename WorkspaceChange = "rename"
|
||||
WorkspaceChangeUrgent WorkspaceChange = "urgent"
|
||||
WorkspaceChangeReload WorkspaceChange = "reload"
|
||||
)
|
||||
|
||||
type WorkspaceEvent struct {
|
||||
Change WorkspaceChange `json:"change"`
|
||||
Current *Node `json:"current"`
|
||||
Old *Node `json:"old"`
|
||||
}
|
||||
|
||||
type WindowChange string
|
||||
|
||||
const (
|
||||
WindowChangeNew WindowChange = "new"
|
||||
WindowChangeClose WindowChange = "close"
|
||||
WindowChangeFocus WindowChange = "focus"
|
||||
WindowChangeTitle WindowChange = "title"
|
||||
WindowChangeFullscreenMode WindowChange = "fullscreen_mode"
|
||||
WindowChangeMove WindowChange = "move"
|
||||
WindowChangeFloating WindowChange = "floating"
|
||||
WindowChangeUrgent WindowChange = "urgent"
|
||||
WindowChangeMark WindowChange = "mark"
|
||||
)
|
||||
|
||||
type WindowEvent struct {
|
||||
Change WindowChange `json:"change"`
|
||||
Container Node `json:"container"`
|
||||
}
|
||||
|
||||
type ShutdownChange string
|
||||
|
||||
const ShutdownChangeExit ShutdownChange = "exit"
|
||||
|
||||
type ShutdownEvent struct {
|
||||
Change ShutdownChange `json:"change"`
|
||||
}
|
||||
|
||||
type RunCommandReply struct {
|
||||
Success bool `json:"success"`
|
||||
Error string `json:"error"`
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user