feat: throw cd hook when chanding directory

TODO.md

@@ -6,3 +6,4 @@
 - [ ] Readme badges
 - [x] Hooks
 - [x] Aliases
+- [ ] hlua (hilbish lua) - 100% lua in the hilbish interactive shell, cuz why not

golibs/fs/fs.go

@@ -13,6 +13,12 @@ func Loader(L *lua.LState) int {
     return 1
 }
 
+
+func LuaErr(L *lua.LState, code int) {
+	// TODO: Error with a table, with path and error code
+	L.Error(lua.LNumber(code), 1)
+}
+
 var exports = map[string]lua.LGFunction{
     "cd": cd,
 }
@@ -20,7 +26,13 @@ var exports = map[string]lua.LGFunction{
 func cd(L *lua.LState) int {
 	path := L.ToString(1)
 
-	os.Chdir(path)
+	err := os.Chdir(path)
+	if err != nil {
+		switch err.(*os.PathError).Err.Error() {
+		case "no such file or directory":
+			LuaErr(L, 2)
+		}
+	}
 
 	return 0
 }

lua.go

@@ -1,9 +1,63 @@
 package main
 
 import (
+	"fmt"
+	"os"
+	lfs "hilbish/golibs/fs"
+	cmds "hilbish/golibs/commander"
+	hooks "hilbish/golibs/bait"
+
 	"github.com/yuin/gopher-lua"
 )
 
+func LuaInit() {
+	l = lua.NewState()
+
+	l.OpenLibs()
+
+	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
+		l.SetField(
+			l.GetTable(l.GetGlobal("commanding"),
+			lua.LString("__commands")),
+			cmdName,
+			cmd)
+	})
+
+	l.PreloadModule("commander", commander.Loader)
+
+	bait = hooks.New()
+	l.PreloadModule("bait", bait.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")
+	if err != nil {
+		err = l.DoFile("preload.lua")
+		if err != nil {
+			fmt.Fprintln(os.Stderr,
+			"Missing preload file, builtins may be missing.")
+		}
+	}
+
+	homedir, _ := os.UserHomeDir()
+	// Run config
+	err = l.DoFile(homedir + "/.hilbishrc.lua")
+	if err != nil {
+		panic(err)
+	}
+}
+
 func hshprompt(L *lua.LState) int {
 	prompt = L.ToString(1)
 

main.go

@@ -10,8 +10,6 @@ import (
 	"strings"
 	"io"
 	"context"
-	lfs "hilbish/golibs/fs"
-	cmds "hilbish/golibs/commander"
 	hooks "hilbish/golibs/bait"
 
 	"github.com/akamensky/argparse"
@@ -304,51 +302,3 @@ func HandleSignals() {
 	}()
 }
 
-func LuaInit() {
-	// TODO: Move to lua.go
-	l = lua.NewState()
-
-	l.OpenLibs()
-
-	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
-		l.SetField(
-			l.GetTable(l.GetGlobal("commanding"),
-			lua.LString("__commands")),
-			cmdName,
-			cmd)
-	})
-
-	l.PreloadModule("commander", commander.Loader)
-
-	bait = hooks.New()
-	l.PreloadModule("bait", bait.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")
-	if err != nil {
-		err = l.DoFile("preload.lua")
-		if err != nil {
-			fmt.Fprintln(os.Stderr,
-			"Missing preload file, builtins may be missing.")
-		}
-	}
-
-	homedir, _ := os.UserHomeDir()
-	// Run config
-	err = l.DoFile(homedir + "/.hilbishrc.lua")
-	if err != nil {
-		panic(err)
-	}
-}

preload.lua

@@ -3,9 +3,19 @@
 
 local fs = require 'fs'
 local commander = require 'commander'
+local bait = require 'bait'
 
 commander.register('cd', function (path)
 	if #path == 1 then
-		fs.cd(path[1])
+		local ok, err = pcall(function() fs.cd(path[1]) end)
+		if not ok then
+			if err == 1 then
+				print('directory does not exist')
+			end
+		end
+		bait.throw('cd', path)
+		return
 	end
+	fs.cd(os.getenv 'HOME')
+	bait.throw('cd', path)
 end)