Merge pull request #1 from canack/improvement

Feature: Add flag to open in browser

.gitignore

@@ -23,3 +23,10 @@ go.work.sum
 
 # env file
 .env
+
+# ide
+.idea
+.vscode
+
+# generated files
+dependency_tree.html

README.md

@@ -55,6 +55,11 @@ your module's dependency graph.
 
 <img src="modview-opt.gif" alt="modview go mod graph dependency tree" style="width: 100%; max-width: 100%;" />
 
+To automatically open the dependency graph in your default web browser, use the `--open` flag:
+```
+modview --open
+```
+
 ## Contributing
 Contributions are welcome! Please feel free to submit a Pull Request.
 

internal/app.go

@@ -85,7 +85,7 @@ func Convert(r io.Reader) (*Graph, error) {
 	return &g, nil
 }
 
-func GenerateHTML(graph *Graph) string {
+func GenerateHTML(graph *Graph) (string, error) {
 	data := struct {
 		Nodes       []string
 		MvsPicked   []string
@@ -111,15 +111,15 @@ func GenerateHTML(graph *Graph) string {
 		},
 	}).Parse(Template)
 	if err != nil {
-		panic(err)
+		return "", err
 	}
 
 	var buf bytes.Buffer
 	if err := tmplObj.Execute(&buf, data); err != nil {
 		panic(err)
 	}
 
-	return buf.String()
+	return buf.String(), nil
 }
 
 func getAllNodes(graph *Graph) []string {

internal/browser.go

@@ -0,0 +1,28 @@
+package internal
+
+import (
+	"fmt"
+	"os/exec"
+	"runtime"
+)
+
+func OpenInBrowser(path string) error {
+	var cmd string
+	var args []string
+
+	switch runtime.GOOS {
+	case "linux":
+		cmd = "xdg-open"
+		args = []string{path}
+	case "windows":
+		cmd = "cmd"
+		args = []string{"/c", "start", path}
+	case "darwin":
+		cmd = "open"
+		args = []string{path}
+	default:
+		return fmt.Errorf("unsupported platform")
+	}
+
+	return exec.Command(cmd, args...).Start()
+}