Golang Template Parse Directory

There are ParseFiles and ParseGlob in Go text/template and html/template package, but sometimes we want to parse all files in a directory tree, so I write a ParseDirectory function to do this.

The code consists of two part:

Use filepath.Walk to walk the file tree in the directory, and return all file paths in the directory.

// Recursively get all file paths in directory, including sub-directories.
func GetAllFilePathsInDirectory(dirpath string) ([]string, error) {
      var paths []string
      err := filepath.Walk(dirpath, func(path string, info os.FileInfo, err error) error {
              if err != nil {
                      return err
              }
              if !info.IsDir() {
                      paths = append(paths, path)
              }
              return nil
      })
      if err != nil {
              return nil, err
      }

      return paths, nil
}

Pass the file paths to ParseFiles function in template package, and the parsed template will be returned.

// Recursively parse all files in directory, including sub-directories.
func ParseDirectory(dirpath string) (*template.Template, error) {
      paths, err := GetAllFilePathsInDirectory(dirpath)
      if err != nil {
              return nil, err
      }
      return template.ParseFiles(paths...)
}

Combine the above code, now we have ParseDirectory function, which takes directory path as argument and returns the parsed template.

Tested on:

Ubuntu Linux 16.10
Go 1.7.5

References:

[1]	[Golang] Walk All Files in Directory

[2]	golang arguments dot - Google search golang arguments dot - DuckDuckGo search golang arguments dot - Ecosia search golang arguments dot - Bing search golang arguments dot - Yahoo search golang arguments dot - Baidu search golang arguments dot - Yandex search

[3]	GitHub - siongui/gotemplateutil: utility for Go template