Parse all templates in the current directory and all sub directories, then executes the given template name. Run as `ttest <template name>`.

ttest.go

package main

import (
	"fmt"
	"html/template"
	"os"
	"path/filepath"
	"strings"
)

func main() {
	t := template.New("template")
	err := filepath.Walk("./",
		func(path string, info os.FileInfo, err error) error {
			if err != nil {
				return err
			}

			if info.IsDir() || !strings.HasSuffix(path, ".html") {
				return nil // Ignore directories and other files
			}

			_, err = t.ParseFiles(path) // Parse the template
			return err
		})
	var useTemplate string
	if len(os.Args) < 2 {
		fmt.Println("No template specified, running 'index' by default")
		useTemplate = "index"
	} else {
		for i := 1; i < len(os.Args); i++ {
			useTemplate += os.Args[i]
			if i < len(os.Args)-1 {
				useTemplate += " "
			}
		}
	}

	// Print out the completed template
	err = t.ExecuteTemplate(os.Stdout, useTemplate, nil)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
}