Add args and url loading

examples/input.gpt

@@ -0,0 +1 @@
+echo "${input}"

pkg/assemble/assemble.go

@@ -0,0 +1,18 @@
+package assemble
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+
+	"github.com/acorn-io/gptscript/pkg/types"
+)
+
+var Header = []byte("GPTSCRIPT\x00")
+
+func Assemble(ctx context.Context, tool types.Tool, output io.Writer) error {
+	if _, err := output.Write(Header); err != nil {
+		return err
+	}
+	return json.NewEncoder(output).Encode(tool)
+}

pkg/cli/root.go

@@ -2,10 +2,13 @@ package cli
 
 import (
 	"fmt"
+	"io"
 	"os"
 	"strings"
 
 	"github.com/acorn-io/cmd"
+	"github.com/acorn-io/gptscript/pkg/assemble"
+	"github.com/acorn-io/gptscript/pkg/input"
 	"github.com/acorn-io/gptscript/pkg/loader"
 	"github.com/acorn-io/gptscript/pkg/runner"
 	"github.com/acorn-io/gptscript/pkg/version"
@@ -15,8 +18,10 @@ import (
 
 type GPTScript struct {
 	runner.Options
-	Output  string `usage:"Save output to a file" short:"o"`
-	SubTool string `usage:"Target tool name in file to run"`
+	Output   string `usage:"Save output to a file" short:"o"`
+	Input    string `usage:"Read input from a file (\"-\" for stdin)" short:"f"`
+	SubTool  string `usage:"Target tool name in file to run"`
+	Assemble bool   `usage:"Assemble tool to a single artifact and saved to --output"`
 }
 
 func New() *cobra.Command {
@@ -26,6 +31,7 @@ func New() *cobra.Command {
 func (r *GPTScript) Customize(cmd *cobra.Command) {
 	cmd.Use = version.ProgramName
 	cmd.Args = cobra.MinimumNArgs(1)
+	cmd.Flags().SetInterspersed(false)
 }
 
 func (r *GPTScript) Run(cmd *cobra.Command, args []string) error {
@@ -34,6 +40,20 @@ func (r *GPTScript) Run(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
+	if r.Assemble {
+		var out io.Writer = os.Stdout
+		if r.Output != "" {
+			f, err := os.Create(r.Output)
+			if err != nil {
+				return fmt.Errorf("opening %s: %w", r.Output, err)
+			}
+			defer f.Close()
+			out = f
+		}
+
+		return assemble.Assemble(cmd.Context(), *tool, out)
+	}
+
 	if !r.Quiet {
 		if !term.IsTerminal(int(os.Stdout.Fd())) {
 			r.Quiet = true
@@ -45,7 +65,16 @@ func (r *GPTScript) Run(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	s, err := runner.Run(cmd.Context(), *tool, "")
+	toolInput, err := input.FromFile(r.Input)
+	if err != nil {
+		return err
+	}
+
+	if toolInput == "" {
+		toolInput = input.FromArgs(args[1:])
+	}
+
+	s, err := runner.Run(cmd.Context(), *tool, toolInput)
 	if err != nil {
 		return err
 	}

pkg/input/input.go

@@ -0,0 +1,32 @@
+package input
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+)
+
+func FromArgs(args []string) string {
+	return strings.Join(args, " ")
+}
+
+func FromFile(file string) (string, error) {
+	if file == "-" {
+		log.Debugf("reading stdin")
+		data, err := io.ReadAll(os.Stdin)
+		if err != nil {
+			return "", fmt.Errorf("reading stdin: %w", err)
+		}
+		return string(data), nil
+	} else if file != "" {
+		log.Debugf("reading file %s", file)
+		data, err := os.ReadFile(file)
+		if err != nil {
+			return "", fmt.Errorf("reading %s: %w", file, err)
+		}
+		return string(data), nil
+	}
+
+	return "", nil
+}

pkg/input/log.go

@@ -0,0 +1,5 @@
+package input
+
+import "github.com/acorn-io/gptscript/pkg/mvl"
+
+var log = mvl.Package()