Merge branch 'master'

.gitignore

@@ -0,0 +1 @@
+i3-wrapper*

go.mod

@@ -0,0 +1,3 @@
+module git.tordarus.net/tordarus/i3-wrapper
+
+go 1.17

main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"os/signal"
+	"path/filepath"
+	"strings"
+	"syscall"
+)
+
+var (
+	envFile = flag.String("env", "$HOME/.config/i3-wrapper/environment", "environment file with variable definitions")
+)
+
+var (
+	i3      *os.Process
+	running bool
+)
+
+func main() {
+	logFile, err := os.Create(filepath.Join(os.Getenv("HOME"), ".i3.log"))
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+	}
+	defer logFile.Close()
+
+	os.Stdout = logFile
+	os.Stderr = logFile
+
+	fmt.Println("environment file:", os.ExpandEnv(*envFile))
+
+	sigs := make(chan os.Signal, 1)
+	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
+	go func() {
+		sig := <-sigs
+		running = false
+		i3.Signal(sig)
+	}()
+
+	running = true
+	for running {
+		cmd := exec.Command("i3")
+		cmd.Stdin = os.Stdin
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+
+		cmd.Env = os.Environ()
+		if envData, err := ioutil.ReadFile(os.ExpandEnv(*envFile)); err == nil {
+			cmd.Env = append(cmd.Env, strings.Split(string(envData), "\n")...)
+		} else {
+			fmt.Println(err)
+		}
+
+		err = cmd.Start()
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+		}
+		i3 = cmd.Process
+
+		err = cmd.Wait()
+		if err != nil {
+			fmt.Fprintln(os.Stderr, err)
+		}
+
+		if _, ok := err.(*exec.ExitError); ok {
+			break
+		}
+	}
+}