add support for editors that need arguments

cmd/agedit/cli.go

@@ -66,6 +66,14 @@ var (
 				return nil
 			},
 		},
+		&cli.StringSliceFlag{
+			Name:  "editor-args",
+			Usage: "`arg`uments to send to the editor",
+			Action: func(ctx *cli.Context, args []string) error {
+				cfg.EditorArgs = args
+				return nil
+			},
+		},
 		&cli.BoolFlag{
 			Name:    "force",
 			Usage:   "Re-encrypt the file even if no changes have been made.",
@@ -134,6 +142,9 @@ func before(ctx *cli.Context) error {
 		}
 	}
 
+	// setup editor with loaded config options
+	edt = editor.New(cfg.Editor, cfg.EditorArgs, cfg.Prefix, cfg.Suffix, cfg.RandomLength)
+
 	return nil
 }
 
@@ -165,7 +176,8 @@ func action(ctx *cli.Context) error {
 	}
 	logger.Debug("decrypted " + input_file + " sucessfully")
 
-	edited, err := editor.EditTempFile(cfg.Editor, string(decrypted), cfg.Prefix, cfg.Suffix, cfg.RandomLength)
+	// open decrypted data in the editor
+	edited, err := edt.EditTempFile(string(decrypted))
 	if err != nil {
 		return err
 	}

cmd/agedit/main.go

@@ -16,6 +16,7 @@ var (
 	cfg        config.Config
 	configFile string
 
+	edt                     editor.Editor
 	input_file, output_file string
 	force_overwrite         bool
 )

internal/config/config.go

@@ -1,11 +1,13 @@
 package config
 
 type Config struct {
-	IdentityFile string `json:"identityfile" yaml:"identityfile" toml:"identityfile"`
-	Editor       string `json:"editor" yaml:"editor" toml:"editor"`
-	Prefix       string `json:"randomfileprefix" yaml:"randomfileprefix" toml:"randomfileprefix"`
-	Suffix       string `json:"randomfilesuffix" yaml:"randomfilesuffix" toml:"randomfilesuffix"`
-	RandomLength int    `json:"randomfilenamelength" yaml:"randomfilenamelength" toml:"randomfilenamelength"`
+	IdentityFile  string   `json:"identityfile" yaml:"identityfile" toml:"identityfile"`
+	RecipientFile string   `json:"recipientfile" yaml:"recipientfile" toml:"recipientfile"`
+	Editor        string   `json:"editor" yaml:"editor" toml:"editor"`
+	EditorArgs    []string `json:"editorargs" yaml:"editorargs" toml:"editorargs"`
+	Prefix        string   `json:"randomfileprefix" yaml:"randomfileprefix" toml:"randomfileprefix"`
+	Suffix        string   `json:"randomfilesuffix" yaml:"randomfilesuffix" toml:"randomfilesuffix"`
+	RandomLength  int      `json:"randomfilenamelength" yaml:"randomfilenamelength" toml:"randomfilenamelength"`
 }
 
 var Defaults = Config{

pkg/editor/editor.go

@@ -1,7 +1,6 @@
 package editor
 
 import (
-	"errors"
 	"io/fs"
 	"os"
 	"os/exec"
@@ -9,14 +8,17 @@ import (
 	"git.burning.moe/celediel/agedit/pkg/tmpfile"
 )
 
-// EditFile opens the specified file in the configured editor
-func EditFile(editor, filename string) error {
-	if editor == "" {
-		return errors.New("editor not set")
-	}
+type Editor struct {
+	Command   string
+	Args      []string
+	generator tmpfile.Generator
+}
 
-	// TODO: handle editors that require arguments
-	cmd := exec.Command(editor, filename)
+// EditFile opens the specified file in the configured editor
+func (e *Editor) EditFile(filename string) error {
+	args := append(e.Args, filename)
+
+	cmd := exec.Command(e.Command, args...)
 	cmd.Stdin = os.Stdin
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
@@ -30,7 +32,7 @@ func EditFile(editor, filename string) error {
 
 // EditTempFile creates a temporary file with a random name, opens it in the
 // editor, and returns the byte slice of its contents.
-func EditTempFile(editor, start, prefix, suffix string, filename_length int) ([]byte, error) {
+func (e *Editor) EditTempFile(start string) ([]byte, error) {
 	var (
 		filename string
 		bytes    []byte
@@ -38,10 +40,7 @@ func EditTempFile(editor, start, prefix, suffix string, filename_length int) ([]
 		file     *os.File
 	)
 
-	// generator := tmpfile.NewGenerator("agedit_", ".txt", 13)
-	generator := tmpfile.NewGenerator(prefix, suffix, filename_length)
-
-	filename = generator.GenerateFullPath()
+	filename = e.generator.GenerateFullPath()
 	if file, err = os.Create(filename); err != nil {
 		return nil, err
 	}
@@ -50,7 +49,7 @@ func EditTempFile(editor, start, prefix, suffix string, filename_length int) ([]
 		return nil, err
 	}
 
-	if err = EditFile(editor, filename); err != nil {
+	if err = e.EditFile(filename); err != nil {
 		return nil, err
 	}
 
@@ -68,3 +67,14 @@ func EditTempFile(editor, start, prefix, suffix string, filename_length int) ([]
 
 	return bytes, nil
 }
+
+// New returns an Editor configured to open files with `command` + `args`.
+// The prefix and suffix will be added to the randomly generated
+// filename of `length` characters.
+func New(command string, args []string, prefix, suffix string, length int) Editor {
+	return Editor{
+		Command:   command,
+		Args:      args,
+		generator: tmpfile.NewGenerator(prefix, suffix, length),
+	}
+}