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package main
import (
"bufio"
"fmt"
"os"
"os/signal"
"strings"
"gosh/cmds"
"gosh/global"
)
// TODO: iterate through args ahead of time to make things run better
func main() {
r := bufio.NewReader(os.Stdin)
ch := make(chan os.Signal, 1)
go func() {
signal.Notify(ch)
signal.Ignore(<-ch)
}()
for {
d, _ := os.Getwd()
fmt.Printf("gosh-0.1:%s$ ", abbr(d))
cmd, err := r.ReadString('\n')
if err != nil && err.Error() == "EOF" {
fmt.Println()
continue
}
cmd = strings.TrimSuffix(cmd, "\n")
args := strings.Split(cmd, " ")
switch args[0] {
case "cd":
if global.ReturnCode, err = cmds.ChDir(args); err != nil {
fmt.Fprintln(os.Stderr, err.Error())
}
break
case "export":
if global.ReturnCode, err = cmds.Export(args); err != nil {
fmt.Fprintln(os.Stderr, err.Error())
}
break
case "unset":
if global.ReturnCode, err = cmds.Unset(args); err != nil {
fmt.Fprintln(os.Stderr, err.Error())
}
break
case "set":
if len(args) == 1 {
cmds.PrintEnv()
} else {
cmds.Set(args)
}
break
case "test", "[":
if global.ReturnCode, err = cmds.Test(args); err != nil {
fmt.Fprintln(os.Stderr, err.Error())
}
break
case "trap":
if global.ReturnCode, err = cmds.Trap(args); err != nil {
fmt.Fprintln(os.Stderr, err.Error())
}
break
case ":":
global.ReturnCode = 0
err = nil
break
case "exit":
if err = cmds.Exit(args); err != nil {
fmt.Fprintln(os.Stderr, err.Error())
}
break
default:
global.ReturnCode = cmds.External(args)
break
}
}
}
func abbr(dir string) string {
home, _ := os.UserHomeDir()
if dir == home {
return "~"
}
dirs := strings.Split(dir, "/")
return dirs[len(dirs)-1]
}
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