chore: merge from master

* Fixes #7 and adds `-i` to sed cmd

* Removed build dep

* Update README.md

* improve sed cmd

Makefile

@@ -1,4 +1,5 @@
 PREFIX ?= /usr
+DESTDIR ?=
 BINDIR ?= $(PREFIX)/bin
 LIBDIR ?= $(PREFIX)/share/hilbish
 
@@ -6,17 +7,17 @@ build:
 	@go build
 
 install:
-	@install -v -d "$(BINDIR)/" && install -m 0755 -v hilbish "$(BINDIR)/hilbish"
-	@mkdir -p "$(LIBDIR)"
-	@cp libs preload.lua .hilbishrc.lua "$(LIBDIR)" -r
-	@echo /usr/bin/hilbish >> /etc/shells
+	@install -v -d "$(DESTDIR)$(BINDIR)/" && install -m 0755 -v hilbish "$(DESTDIR)$(BINDIR)/hilbish"
+	@mkdir -p "$(DESTDIR)$(LIBDIR)"
+	@cp libs preload.lua .hilbishrc.lua "$(DESTDIR)$(LIBDIR)" -r
+	@echo "$(DESTDIR)$(BINDIR)/hilbish" >> /etc/shells
 	@echo "Hilbish Installed"
 
 uninstall:
 	@rm -vrf \
-			"$(BINDIR)/hilbish" \
-			"$(LIBDIR)"
-	@sed '/\/usr\/bin\/hilbish/d' /etc/shells
+			"$(DESTDIR)$(BINDIR)/hilbish" \
+			"$(DESTDIR)$(LIBDIR)"
+	@sed -i '/hilbish/d' /etc/shells
 	@echo "Hilbish Uninstalled"
 
 clean:

README.md

@@ -22,7 +22,7 @@ cd Hilbish
 make build
 sudo make install
 # Or 
-sudo make
+sudo make all
 ```
 
 Alternativly, if you use Arch Linux, you can install Hilbish with an **(unofficial)** AUR package

main.go

@@ -4,8 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
-	_ "os/exec"
-	_ "os/user"
+	"os/user"
 	"syscall"
 	"os/signal"
 	"strings"
@@ -25,8 +24,11 @@ import (
 
 const version = "0.2.0-dev"
 var l *lua.LState
+// User's prompt, this will get set when lua side is initialized
 var prompt string
+// Map of builtin/custom commands defined in the commander lua module
 var commands = map[string]bool{}
+// Command aliases
 var aliases = map[string]string{}
 
 func main() {
@@ -41,7 +43,9 @@ func main() {
 	})
 
 	err := parser.Parse(os.Args)
+	// If invalid flags or --help/-h,
 	if err != nil {
+		// Print usage
 		fmt.Print(parser.Usage(err))
 		os.Exit(0)
 	}
@@ -51,10 +55,14 @@ func main() {
 		os.Exit(0)
 	}
 
+	// Set $SHELL if the user wants to
 	if *setshflag { os.Setenv("SHELL", os.Args[0]) }
 
+	// Read config from current directory
+	// (this is assuming the current dir is Hilbish's git)
 	input, err := os.ReadFile(".hilbishrc.lua")
 	if err != nil {
+		// If it wasnt found, go to "real default"
 		input, err = os.ReadFile("/usr/share/hilbish/.hilbishrc.lua")
 		if err != nil {
 			fmt.Println("could not find .hilbishrc.lua or /usr/share/hilbish/.hilbishrc.lua")
@@ -63,9 +71,12 @@ func main() {
 	}
 
 	homedir, _ := os.UserHomeDir()
+	// If user's config doesn't exixt,
 	if _, err := os.Stat(homedir + "/.hilbishrc.lua"); os.IsNotExist(err) {
+		// Create it using either default config we found
 		err = os.WriteFile(homedir + "/.hilbishrc.lua", input, 0644)
 		if err != nil {
+			// If that fails, bail
 			fmt.Println("Error creating config file")
 			fmt.Println(err)
 			return
@@ -76,41 +87,43 @@ func main() {
 	LuaInit()
 
 	readline.Completer = readline.FilenameCompleter
+
 	for {
-		//user, _ := user.Current()
-		//dir, _ := os.Getwd()
-		//host, _ := os.Hostname()
-
-		//reader := bufio.NewReader(os.Stdin)
-
-		//fmt.Printf(prompt)
-
 		cmdString, err := readline.String(fmtPrompt())
 		if err == io.EOF {
+			// Exit if user presses ^D (ctrl + d)
 			fmt.Println("")
 			break
 		}
 		if err != nil {
+			// If we get a completely random error, print
 			fmt.Fprintln(os.Stderr, err)
 		}
+
+		// I have no idea if we need this anymore
 		cmdString = strings.TrimSuffix(cmdString, "\n")
+		// First try to run user input in Lua
 		err = l.DoString(cmdString)
 
 		if err == nil {
+			// If it succeeds, add to history and prompt again
 			readline.AddHistory(cmdString)
 			continue
 		}
 
-		cmdArgs := splitInput(cmdString)
+		// Split up the input
+		cmdArgs, cmdString := splitInput(cmdString)
+		// If there's actually no input, prompt again
 		if len(cmdArgs) == 0 { continue }
 
+		// If alias was found, use command alias
 		if aliases[cmdArgs[0]] != "" {
 			cmdString = aliases[cmdArgs[0]] + strings.Trim(cmdString, cmdArgs[0])
-			//cmdArgs := splitInput(cmdString)
 			execCommand(cmdString)
 			continue
 		}
 
+		// If command is defined in Lua then run it
 		if commands[cmdArgs[0]] {
 			err := l.CallByParam(lua.P{
 				Fn: l.GetField(
@@ -128,12 +141,15 @@ func main() {
 			readline.AddHistory(cmdString)
 			continue
 		}
+
+		// Last option: use sh interpreter
 		switch cmdArgs[0] {
 		case "exit":
 			os.Exit(0)
 		default:
 			err := execCommand(cmdString)
 			if err != nil {
+				// If input is incomplete, start multiline prompting
 				if syntax.IsIncomplete(err) {
 					sb := &strings.Builder{}
 					for {
@@ -150,11 +166,35 @@ func main() {
 	}
 }
 
+// This semi cursed function formats our prompt (obviously)
 func fmtPrompt() string {
-	return prompt
+	user, _ := user.Current()
+	host, _ := os.Hostname()
+	cwd, _ := os.Getwd()
+
+	cwd = strings.Replace(cwd, user.HomeDir, "~", 1)
+
+	args := []string{
+		"d", cwd,
+		"h", host,
+		"u", user.Name,
+	}
+
+	for i, v := range args {
+		if i % 2 == 0 {
+			args[i] = "%" + v
+		}
+	}
+
+	r := strings.NewReplacer(args...)
+	nprompt := r.Replace(prompt)
+
+	return nprompt
 }
 
 func StartMultiline(prev string, sb *strings.Builder) bool {
+	// sb fromt outside is passed so we can
+	// save input from previous prompts
 	if sb.String() == "" { sb.WriteString(prev + "\n") }
 
 	fmt.Printf("... ")
@@ -163,6 +203,7 @@ func StartMultiline(prev string, sb *strings.Builder) bool {
 
 	cont, err := reader.ReadString('\n')
 	if err == io.EOF {
+		// Exit when ^D
 		fmt.Println("")
 		return true
 	}
@@ -177,33 +218,61 @@ func StartMultiline(prev string, sb *strings.Builder) bool {
 	return true 
 }
 
-func splitInput(input string) []string {
+func splitInput(input string) ([]string, string) {
+	// end my suffering
+	// TODO: refactor this garbage
 	quoted := false
+	startlastcmd := false
+	lastcmddone := false
 	cmdArgs := []string{}
 	sb := &strings.Builder{}
+	cmdstr := &strings.Builder{}
+	lastcmd := readline.GetHistory(readline.HistorySize() - 1)
 
 	for _, r := range input {
 		if r == '"' {
+			// start quoted input
+			// this determines if other runes are replaced
 			quoted = !quoted
 			// dont add back quotes
 			//sb.WriteRune(r)
 		} else if !quoted && r == '~' {
+			// if not in quotes and ~ is found then make it $HOME
 			sb.WriteString(os.Getenv("HOME"))
 		} else if !quoted && r == ' ' {
+			// if not quoted and there's a space then add to cmdargs
 			cmdArgs = append(cmdArgs, sb.String())
 			sb.Reset()
+		} else if !quoted && r == '^' && startlastcmd && !lastcmddone {
+			// if ^ is found, isnt in quotes and is
+			// the second occurence of the character and is
+			// the first time "^^" has been used
+			cmdstr.WriteString(lastcmd)
+			sb.WriteString(lastcmd)
+
+			startlastcmd = !startlastcmd
+			lastcmddone = !lastcmddone
+
+			continue
+		} else if !quoted && r == '^' && !lastcmddone {
+			// if ^ is found, isnt in quotes and is the
+			// first time of starting "^^"
+			startlastcmd = !startlastcmd
+			continue
 		} else {
 			sb.WriteRune(r)
 		}
+		cmdstr.WriteRune(r)
 	}
 	if sb.Len() > 0 {
 		cmdArgs = append(cmdArgs, sb.String())
 	}
 
 	readline.AddHistory(input)
-	return cmdArgs
+	return cmdArgs, cmdstr.String()
 }
 
+// Run command in sh interpreter
 func execCommand(cmd string) error {
 	file, err := syntax.NewParser().Parse(strings.NewReader(cmd), "")
 	if err != nil {
@@ -217,6 +286,7 @@ func execCommand(cmd string) error {
 	return nil
 }
 
+// do i even have to say
 func HandleSignals() {
 	c := make(chan os.Signal)
 	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
@@ -226,6 +296,7 @@ func HandleSignals() {
 }
 
 func LuaInit() {
+	// TODO: Move to lua.go
 	l = lua.NewState()
 
 	l.OpenLibs()
@@ -233,9 +304,11 @@ func LuaInit() {
 	l.SetGlobal("prompt", l.NewFunction(hshprompt))
 	l.SetGlobal("alias", l.NewFunction(hshalias))
 
+	// Add fs module to Lua
 	l.PreloadModule("fs", lfs.Loader)
 
 	commander := cmds.New()
+	// When a command from Lua is added, register it for use
 	commander.Events.On("commandRegister",
 	func (cmdName string, cmd *lua.LFunction) {
 		commands[cmdName] = true
@@ -248,6 +321,7 @@ func LuaInit() {
 
 	l.PreloadModule("commander", commander.Loader)
 
+	// Add more paths that Lua can require from
 	l.DoString("package.path = package.path .. ';./libs/?/init.lua;/usr/share/hilbish/libs/?/init.lua'")
 
 	err := l.DoFile("/usr/share/hilbish/preload.lua")
@@ -260,6 +334,7 @@ func LuaInit() {
 	}
 
 	homedir, _ := os.UserHomeDir()
+	// Run config
 	err = l.DoFile(homedir + "/.hilbishrc.lua")
 	if err != nil {
 		panic(err)