feat: add command line flags and set SHELL, make commands exit on ctrl c

go.mod

@@ -2,4 +2,12 @@ module hilbish
 
 go 1.16
 
-require github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da // indirect
+require (
+	github.com/Nerdmaster/terminal v0.12.1 // indirect
+	github.com/akamensky/argparse v1.2.2 // indirect
+	github.com/bobappleyard/readline v0.0.0-20150707195538-7e300e02d38e // indirect
+	github.com/eiannone/keyboard v0.0.0-20200508000154-caf4b762e807 // indirect
+	github.com/gdamore/tcell v1.4.0 // indirect
+	github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da // indirect
+	golang.org/x/sys v0.0.0-20210319071255-635bc2c9138d // indirect
+)

go.sum

@@ -1,6 +1,27 @@
+github.com/Nerdmaster/terminal v0.12.1 h1:DGb3ya55nZdqdBMjWQHNF5mHYHS2eJgYLqmw3KnE1cQ=
+github.com/Nerdmaster/terminal v0.12.1/go.mod h1:Dg6++m3aF+P/l8RdYb/2N6zK3CqvUfzhBreUNEWuQ8M=
+github.com/akamensky/argparse v1.2.2 h1:P17T0ZjlUNJuWTPPJ2A5dM1wxarHgHqfYH+AZTo2xQA=
+github.com/akamensky/argparse v1.2.2/go.mod h1:S5kwC7IuDcEr5VeXtGPRVZ5o/FdhcMlQz4IZQuw64xA=
+github.com/bobappleyard/readline v0.0.0-20150707195538-7e300e02d38e h1:4G8AYOOwZdDWOiJR6D6JXaFmj5BDS7c5D5PyqsG/+Hg=
+github.com/bobappleyard/readline v0.0.0-20150707195538-7e300e02d38e/go.mod h1:fmqtV+Wqx0uFYLN1F4VhjZdtT56Dr8c3yA7nALFsw/Q=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/eiannone/keyboard v0.0.0-20200508000154-caf4b762e807 h1:jdjd5e68T4R/j4PWxfZqcKY8KtT9oo8IPNVuV4bSXDQ=
+github.com/eiannone/keyboard v0.0.0-20200508000154-caf4b762e807/go.mod h1:Xoiu5VdKMvbRgHuY7+z64lhu/7lvax/22nzASF6GrO8=
+github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
+github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
+github.com/gdamore/tcell v1.4.0 h1:vUnHwJRvcPQa3tzi+0QI4U9JINXYJlOz9yiaiPQ2wMU=
+github.com/gdamore/tcell v1.4.0/go.mod h1:vxEiSDZdW3L+Uhjii9c3375IlDmR05bzxY404ZVSMo0=
+github.com/lucasb-eyer/go-colorful v1.0.3 h1:QIbQXiugsb+q10B+MI+7DI1oQLdmnep86tWFlaaUAac=
+github.com/lucasb-eyer/go-colorful v1.0.3/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/mattn/go-runewidth v0.0.7 h1:Ei8KR0497xHyKJPAv59M1dkC+rOZCMBJ+t3fZ+twI54=
+github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da h1:NimzV1aGyq29m5ukMK0AMWEhFaL/lrEOaephfuoiARg=
 github.com/yuin/gopher-lua v0.0.0-20200816102855-ee81675732da/go.mod h1:E1AXubJBdNmFERAOucpDIxNzeGfLzg0mYh+UfMWdChA=
 golang.org/x/sys v0.0.0-20190204203706-41f3e6584952/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190626150813-e07cf5db2756/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210319071255-635bc2c9138d h1:jbzgAvDZn8aEnytae+4ou0J0GwFZoHR0hOrTg4qH8GA=
+golang.org/x/sys v0.0.0-20210319071255-635bc2c9138d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=

main.go

@@ -1,20 +1,43 @@
 package main
 
 import (
-	"bufio"
+	_ "bufio"
 	"fmt"
 	"os"
 	"os/exec"
 	_ "os/user"
+	"syscall"
 	"os/signal"
 	"strings"
+
+	"github.com/akamensky/argparse"
+	"github.com/bobappleyard/readline"
 	"github.com/yuin/gopher-lua"
 )
 
+const version = "0.0.4"
 var l *lua.LState
 var prompt string
 
 func main() {
+	parser := argparse.NewParser("hilbish", "A shell for lua and flower lovers")
+	verflag := parser.Flag("v", "version", &argparse.Options{
+		Required: false,
+		Help: "color palette to use",
+	})
+
+	err := parser.Parse(os.Args)
+	if err != nil {
+		fmt.Print(parser.Usage(err))
+		os.Exit(0)
+	}
+
+	if *verflag {
+		fmt.Printf("Hilbish v%s\n", version)
+		os.Exit(0)
+	}
+
+	os.Setenv("SHELL", os.Args[0])
 	HandleSignals()
 	LuaInit()
 
@@ -23,11 +46,11 @@ func main() {
 		//dir, _ := os.Getwd()
 		//host, _ := os.Hostname()
 
-		reader := bufio.NewReader(os.Stdin)
+		//reader := bufio.NewReader(os.Stdin)
 
-		fmt.Printf(prompt)
+		//fmt.Printf(prompt)
 
-		cmdString, err := reader.ReadString('\n')
+		cmdString, err := readline.String(prompt)
 		if err != nil {
 			fmt.Fprintln(os.Stderr, err)
 		}
@@ -52,11 +75,16 @@ func main() {
 		if err := cmd.Run(); err != nil {
 			fmt.Fprintln(os.Stderr, err)
 		}
+		readline.AddHistory(cmdString)
 	}
 }
 
 func HandleSignals() {
-	signal.Ignore(os.Interrupt)
+	c := make(chan os.Signal)
+	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
+	go func() {
+		<-c
+	}()
 }
 
 func LuaInit() {