chore: remove unused code

job.go

@@ -1,15 +1,16 @@
 package main
 
 import (
+	"errors"
 	"io"
 	"os"
 	"os/exec"
 	"sync"
+	"syscall"
 
 	"hilbish/util"
 
 	rt "github.com/arnodel/golua/runtime"
-	"github.com/arnodel/golua/lib/iolib"
 )
 
 var jobs *jobHandler
@@ -73,6 +74,10 @@ func (j *job) finish() {
 	hooks.Em.Emit("job.done", j.lua())
 }
 
+func (j *job) wait() {
+	j.handle.Wait()
+}
+
 func (j *job) setHandle(handle *exec.Cmd) {
 	j.handle = handle
 	j.args = handle.Args
@@ -91,14 +96,6 @@ func (j *job) getProc() *os.Process {
 	return nil
 }
 
-func (j *job) setStdio(typ string, f *iolib.File) {
-	switch typ {
-		case "in": j.stdin = f.File
-		case "out": j.stdout = f.File
-		case "err": j.stderr = f.File
-	}
-}
-
 func (j *job) lua() rt.Value {
 	jobFuncs := map[string]util.LuaExport{
 		"stop": {j.luaStop, 0, false},
@@ -178,11 +175,41 @@ func (j *jobHandler) getLatest() *job {
 	return j.jobs[j.latestID]
 }
 
+func (j *jobHandler) disown(id int) error {
+	j.mu.RLock()
+	if j.jobs[id] == nil {
+		return errors.New("job doesnt exist")
+	}
+	j.mu.RUnlock()
+
+	j.mu.Lock()
+	delete(j.jobs, id)
+	j.mu.Unlock()
+
+	return nil
+}
+
+func (j *jobHandler) stopAll() {
+	j.mu.RLock()
+	defer j.mu.RUnlock()
+
+	for _, jb := range j.jobs {
+		// on exit, unix shell should send sighup to all jobs
+		if jb.running {
+			proc := jb.getProc()
+			proc.Signal(syscall.SIGHUP)
+			jb.wait() // waits for program to exit due to sighup
+		}
+	}
+}
+
 func (j *jobHandler) loader(rtm *rt.Runtime) *rt.Table {
 	jobFuncs := map[string]util.LuaExport{
 		"all": {j.luaAllJobs, 0, false},
+		"last": {j.luaLastJob, 0, false},
 		"get": {j.luaGetJob, 1, false},
 		"add": {j.luaAddJob, 2, false},
+		"disown": {j.luaDisownJob, 1, false},
 	}
 
 	luaJob := rt.NewTable()
@@ -247,3 +274,33 @@ func (j *jobHandler) luaAllJobs(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
 
 	return c.PushingNext1(t.Runtime, rt.TableValue(jobTbl)), nil
 }
+
+func (j *jobHandler) luaDisownJob(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
+	if err := c.Check1Arg(); err != nil {
+		return nil, err
+	}
+	jobID, err := c.IntArg(0)
+	if err != nil {
+		return nil, err
+	}
+
+	err = j.disown(int(jobID))
+	if err != nil {
+		return nil, err
+	}
+
+	return c.Next(), nil
+}
+
+func (j *jobHandler) luaLastJob(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
+	j.mu.RLock()
+	defer j.mu.RUnlock()
+
+	job := j.jobs[j.latestID]
+	if job == nil { // incase we dont have any jobs yet
+		return c.Next(), nil
+	}
+
+	return c.PushingNext1(t.Runtime, job.lua()), nil
+}
+

main.go

@@ -221,6 +221,8 @@ input:
 		}
 		fmt.Printf("\u001b[7m∆\u001b[0m" + strings.Repeat(" ", termwidth - 1) + "\r")
 	}
+
+	exit(0)
 }
 
 func continuePrompt(prev string) (string, error) {
@@ -296,10 +298,17 @@ func contains(s []string, e string) bool {
 }
 
 func exit(code int) {
-	// wait for all timers to finish before exiting
+	jobs.stopAll()
+
+	// wait for all timers to finish before exiting.
+	// only do that when not interactive
+	if !interactive {
 		for {
 			if timers.running == 0 {
 				os.Exit(code)
 			}
 		}
 	}
+
+	os.Exit(code)
+}

nature/commands/disown.lua

@@ -0,0 +1,25 @@
+local commander = require 'commander'
+
+commander.register('disown', function(args)
+	if #hilbish.jobs.all() == 0 then
+		print 'disown: no current job'
+		return 1
+	end
+
+	local id
+	if #args < 0 then
+		id = tonumber(args[1])
+		if not id then
+			print 'disown: invalid id for job'
+			return 1
+		end
+	else
+		id = hilbish.jobs.last().id
+	end
+
+	local ok = pcall(hilbish.jobs.disown, id)
+	if not ok then
+		print 'disown: job does not exist'
+		return 2
+	end
+end)

nature/commands/init.lua

@@ -4,3 +4,4 @@ require 'nature.commands.cdr'
 require 'nature.commands.doc'
 require 'nature.commands.exit'
 require 'nature.commands.guide'
+require 'nature.commands.disown'