feat: render template context

render.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"text/template"
+)
+
+func sh(ctx TemplateContext) func(string) string {
+	return func(command string) string {
+		cmd := exec.Command("sh", "-c", command)
+		for k, v := range ctx {
+			cmd.Env = append(cmd.Env, k+"="+v)
+		}
+		fmt.Println(cmd.Environ())
+		out, err := cmd.Output()
+		if err != nil {
+			return fmt.Sprintf("> Failed to execute the command: %s\n> %s\n", cmd.Args, err.Error())
+		}
+		return fmt.Sprintf("\n```\n%s\n```\n", string(out))
+	}
+}
+
+func render(tmpl string, ctx TemplateContext) {
+	funcMap := template.FuncMap{
+		"sh": sh(ctx),
+	}
+	t, err := template.New("foo").Funcs(funcMap).Parse(tmpl)
+	if err != nil {
+		panic(err)
+	}
+	t.Execute(os.Stdout, ctx)
+}