Hilbish/lua.go

111 lines
2.2 KiB
Go

package main
import (
"fmt"
"hilbish/golibs/bait"
"hilbish/golibs/commander"
lfs "hilbish/golibs/fs"
"os"
"github.com/yuin/gopher-lua"
)
var minimalconf = `
ansikit = require 'ansikit'
prompt(ansikit.format(
'{blue}%u {cyan}%d {green}∆{reset} '
))
`
func LuaInit(confpath string) {
l = lua.NewState()
l.OpenLibs()
l.SetGlobal("_ver", lua.LString(version))
l.SetGlobal("prompt", l.NewFunction(hshprompt))
l.SetGlobal("multiprompt", l.NewFunction(hshmlprompt))
l.SetGlobal("alias", l.NewFunction(hshalias))
l.SetGlobal("appendPath", l.NewFunction(hshappendPath))
// Add fs module to Lua
l.PreloadModule("fs", lfs.Loader)
cmds := commander.New()
// When a command from Lua is added, register it for use
cmds.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", cmds.Loader)
hooks = bait.New()
l.PreloadModule("bait", hooks.Loader)
// Add more paths that Lua can require from
l.DoString(`package.path = package.path
.. ';./libs/?/init.lua;./?/init.lua;./?/?.lua'
.. ';/usr/share/hilbish/libs/?/init.lua;'
.. os.getenv 'HOME' .. '/.local/share/hilbish/libs/?/init.lua;'
.. os.getenv 'HOME' .. '/.local/share/hilbish/libs/?/?.lua;'
.. os.getenv 'HOME' .. '/.local/share/hilbish/libs/?.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.")
}
}
// Run config
if !interactive {
return
}
err = l.DoFile(confpath)
if err != nil {
fmt.Fprintln(os.Stderr, err,
"\nAn error has occured while loading your config! Falling back to minimal default config.\n")
l.DoString(minimalconf)
}
}
func hshprompt(L *lua.LState) int {
prompt = L.ToString(1)
return 0
}
func hshmlprompt(L *lua.LState) int {
multilinePrompt = L.ToString(1)
return 0
}
func hshalias(L *lua.LState) int {
alias := L.ToString(1)
source := L.ToString(2)
aliases[alias] = source
return 1
}
func hshappendPath(L *lua.LState) int {
path := L.ToString(1)
os.Setenv("PATH", os.Getenv("PATH") + ":" + path)
return 0
}