This adds an additional method to RepositoriesService to download a file

github/repos_contents.go

@@ -13,8 +13,10 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"io"
 	"net/http"
 	"net/url"
+	"path"
 )
 
 // RepositoryContent represents a file or directory in a github repository.
@@ -91,6 +93,32 @@ func (s *RepositoriesService) GetReadme(owner, repo string, opt *RepositoryConte
 	return readme, resp, err
 }
 
+// DownloadContents returns an io.ReadCloser that reads the contents of the
+// specified file. This function will work with files of any size, as opposed
+// to GetContents which is limited to 1 Mb files. It is the caller's
+// responsibility to close the ReadCloser.
+func (s *RepositoriesService) DownloadContents(owner, repo, filepath string, opt *RepositoryContentGetOptions) (io.ReadCloser, error) {
+	dir := path.Dir(filepath)
+	filename := path.Base(filepath)
+	_, dirContents, _, err := s.GetContents(owner, repo, dir, opt)
+	if err != nil {
+		return nil, err
+	}
+	for _, contents := range dirContents {
+		if *contents.Name == filename {
+			if contents.DownloadURL == nil || *contents.DownloadURL == "" {
+				return nil, fmt.Errorf("No download link found for %s", filepath)
+			}
+			resp, err := s.client.client.Get(*contents.DownloadURL)
+			if err != nil {
+				return nil, err
+			}
+			return resp.Body, nil
+		}
+	}
+	return nil, fmt.Errorf("No file named %s found in %s", filename, dir)
+}
+
 // GetContents can return either the metadata and content of a single file
 // (when path references a file) or the metadata of all the files and/or
 // subdirectories of a directory (when path references a directory). To make it