i3-session-manager/main.go
2021-12-21 19:43:46 +01:00

110 lines
2.4 KiB
Go

package main
import (
// Standard
"fmt"
"net"
"os"
"regexp"
"strings"
)
var (
session I3Session
sessionSubscription I3Session
workspaces []I3Workspace
outputIndices map[string]int
)
func init() {
outputIndices = make(map[string]int)
workspaces = []I3Workspace{
{ Num: 0, Name: "Development" },
{ Num: 1, Name: "Terminal" },
{ Num: 2, Name: "Browser" },
{ Num: 3, Name: "Communication" },
{ Num: 4, Name: "Multimedia" },
{ Num: 5, Name: "Graphics" },
{ Num: 6, Name: "SQL" },
{ Num: 7, Name: "Debug" },
{ Num: 8, Name: "Email" },
{ Num: 9, Name: "Virtualization" },
}
}
func main() {
var err error
// session is used for interactively communicating with i3,
// like getting workspace and output data.
if session, err = NewI3Session(); err != nil {
fmt.Printf("%s\n", err)
os.Exit(1)
}
defer session.Close()
// sessionSubscription is used for listening to subscribed events
// from i3.
if sessionSubscription, err = NewI3Session(); err != nil {
fmt.Printf("%s\n", err)
os.Exit(1)
}
sessionSubscription.Subscribe([]string{"binding", "output"})
defer sessionSubscription.Close()
go sessionSubscription.Loop()
// Socket server reading commands and acting upon them
var listener net.Listener
listener, err = net.Listen("unix", "/tmp/i3-session.sock")
if err != nil {
fmt.Printf("Socket listener: %s\n", err)
os.Exit(1)
}
// Find outputs and assign an index to them
outputs, err := session.Outputs()
if err != nil {
fmt.Printf("Output error: %s\n", err)
os.Exit(1)
}
idx := 0
for _, output := range outputs {
if output.Active {
outputIndices[output.Name] = idx
idx++
}
}
// XXX: still needed? Find the configured workspaces
if false {
var configData string
var configLines []string
configData, err = session.Config()
configLines = strings.Split(configData, "\n")
r := regexp.MustCompile(`(?i)^\s*workspace\s+["']?([^"']+?)["']?\s+output\s+["']?([^"']+?)["']?\s*$`)
for _, line := range configLines {
matches := r.FindAllStringSubmatch(line, -1)
if len(matches) > 0 && len(matches[0]) == 3 {
fmt.Printf("%#v\n", matches[0][1:])
}
}
}
// Listen for external commands
var conn net.Conn
for {
conn, err = listener.Accept()
if err != nil {
fmt.Printf("Connection accept: %s\n", err)
}
buf := make([]byte, 1024)
_, err = conn.Read(buf)
if err != nil {
fmt.Printf("Connection read: %s\n", err)
} else {
fmt.Printf("%s\n", buf)
}
conn.Close()
}
}