minor tweaks

.goreleaser.yml

@@ -1,8 +1,13 @@
-build:
-  binary: hrun
-  goos:
-    - linux
-    - darwin
-    - windows
-  goarch:
-    - amd64
+before:
+  hooks:
+    - go mod tidy
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+    goarch:
+      - amd64
+      - arm64

README.md

@@ -26,7 +26,7 @@ POST(`${host}/post`, 'Accept: application/vnd.foobar.v2+json', { payload: { data
 Run the script:
 
 ```sh
-$ hrun -f examples/basic.js
+$ hrun examples/basic.js
 ```
 
 ## API

main.go

@@ -1,30 +1,54 @@
 package main
 
 import (
+	"errors"
 	"flag"
+	"fmt"
+	"os"
 
 	"github.com/speier/hrun/pkg/req"
 	"github.com/speier/hrun/pkg/utils"
 	"github.com/speier/hrun/pkg/vm"
 )
 
+const (
+	usage = `Usage: hrun [OPTIONS] <filename>
+
+Options:
+`
+)
+
 var (
 	envargs utils.ArrayFlag
 )
 
 func init() {
 	flag.Var(&envargs, "e", "env var or file (repeatable)")
+	flag.Usage = func() {
+		fmt.Fprintf(flag.CommandLine.Output(), usage)
+		flag.PrintDefaults()
+	}
 	flag.Parse()
 }
 
 func main() {
+	// just append a new line to make output more readable
+	fmt.Println()
+
+	// check if file exists
+	filename := flag.Arg(0)
+	if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
+		flag.Usage()
+		os.Exit(0)
+	}
+
 	// init vm
 	vm := vm.NewInterpreter(req.Methods)
 	vm.Set("env", utils.VMEnv(envargs))
 
 	// run script
-	_, err := vm.RunFile(flag.Arg(0))
+	_, err := vm.RunFile(filename)
 	if err != nil {
-		println(err.Error())
+		fmt.Println(err.Error())
 	}
 }

pkg/req/res.go

@@ -25,8 +25,8 @@ type Response struct {
 
 func (r *Response) String() string {
 	sb := &strings.Builder{}
-	fmt.Fprintf(sb, "\n[%d] %s\n", r.StatusCode, r.Host)
-	fmt.Fprintf(sb, "%s\n", r.Body)
+	fmt.Fprintf(sb, "[%d] %s\n", r.StatusCode, r.Host)
+	fmt.Fprintf(sb, "%s", r.Body)
 	return sb.String()
 }