Add list command

list.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/urfave/cli/v2"
+	"go.arsenm.dev/lure/distro"
+	"go.arsenm.dev/lure/internal/shutils"
+	"go.arsenm.dev/lure/internal/shutils/decoder"
+	"mvdan.cc/sh/v3/expand"
+	"mvdan.cc/sh/v3/interp"
+	"mvdan.cc/sh/v3/syntax"
+)
+
+func listCmd(c *cli.Context) error {
+	info, err := distro.ParseOSRelease(c.Context)
+	if err != nil {
+		log.Fatal("Error parsing os-release").Err(err).Send()
+	}
+
+	pkgs, err := findPkg("*")
+	if err != nil {
+		log.Fatal("Error finding packages").Err(err).Send()
+	}
+
+	for _, script := range pkgs {
+		fl, err := os.Open(script)
+		if err != nil {
+			log.Fatal("Error opening script").Err(err).Send()
+		}
+
+		file, err := syntax.NewParser().Parse(fl, "lure.sh")
+		if err != nil {
+			log.Fatal("Error parsing script").Err(err).Send()
+		}
+
+		fl.Close()
+
+		runner, err := interp.New(
+			interp.Env(expand.ListEnviron()),
+			interp.ExecHandler(shutils.NopExec),
+			interp.StatHandler(shutils.NopStat),
+			interp.OpenHandler(shutils.NopOpen),
+			interp.ReadDirHandler(shutils.NopReadDir),
+		)
+		if err != nil {
+			log.Fatal("Error creating runner").Err(err).Send()
+		}
+
+		err = runner.Run(c.Context, file)
+		if err != nil {
+			log.Fatal("Error running script").Err(err).Send()
+		}
+
+		dec := decoder.New(info, runner)
+
+		var vars BuildVars
+		err = dec.DecodeVars(&vars)
+		if err != nil {
+			log.Fatal("Error decoding script variables").Err(err).Send()
+		}
+
+		fmt.Println(vars.Name, vars.Version)
+	}
+
+	return nil
+}

main.go

@@ -67,9 +67,14 @@ func main() {
 			{
 				Name:    "info",
 				Usage:   "Print information about a package",
-				Aliases: []string{"up"},
 				Action:  infoCmd,
 			},
+			{
+				Name:    "list",
+				Usage:   "List LURE repo packages",
+				Aliases: []string{"ls"},
+				Action:  listCmd,
+			},
 			{
 				Flags: []cli.Flag{
 					&cli.StringFlag{