Add GetFileReader() & GetFile() support git-lfs (#595)

Reviewed-on: https://gitea.com/gitea/go-sdk/pulls/595
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-by: KN4CK3R <kn4ck3r@noreply.gitea.io>

gitea/client.go

@@ -341,10 +341,25 @@ func statusCodeToErr(resp *Response) (body []byte, err error) {
 	return data, fmt.Errorf("%s: %s", resp.Status, string(data))
 }
 
+func (c *Client) getResponseReader(method, path string, header http.Header, body io.Reader) (io.ReadCloser, *Response, error) {
+	resp, err := c.doRequest(method, path, header, body)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	// check for errors
+	data, err := statusCodeToErr(resp)
+	if err != nil {
+		return io.NopCloser(bytes.NewReader(data)), resp, err
+	}
+
+	return resp.Body, resp, nil
+}
+
 func (c *Client) getResponse(method, path string, header http.Header, body io.Reader) ([]byte, *Response, error) {
 	resp, err := c.doRequest(method, path, header, body)
 	if err != nil {
-		return nil, nil, err
+		return nil, resp, err
 	}
 	defer resp.Body.Close()
 

gitea/repo_file.go

@@ -9,6 +9,8 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"io"
+	"io/ioutil"
 	"net/url"
 	"strings"
 )
@@ -117,17 +119,46 @@ type FileDeleteResponse struct {
 }
 
 // GetFile downloads a file of repository, ref can be branch/tag/commit.
+// it optional can resolve lfs pointers and server the file instead
 // e.g.: ref -> master, filepath -> README.md (no leading slash)
-func (c *Client) GetFile(owner, repo, ref, filepath string) ([]byte, *Response, error) {
+func (c *Client) GetFile(owner, repo, ref, filepath string, resolveLFS ...bool) ([]byte, *Response, error) {
+	reader, resp, err := c.GetFileReader(owner, repo, ref, filepath, resolveLFS...)
+	if reader == nil {
+		return nil, resp, err
+	}
+	defer reader.Close()
+
+	data, err2 := ioutil.ReadAll(reader)
+	if err2 != nil {
+		return nil, resp, err2
+	}
+
+	return data, resp, err
+}
+
+// GetFileReader return reader for download a file of repository, ref can be branch/tag/commit.
+// it optional can resolve lfs pointers and server the file instead
+// e.g.: ref -> master, filepath -> README.md (no leading slash)
+func (c *Client) GetFileReader(owner, repo, ref, filepath string, resolveLFS ...bool) (io.ReadCloser, *Response, error) {
 	if err := escapeValidatePathSegments(&owner, &repo); err != nil {
 		return nil, nil, err
 	}
+
+	// resolve lfs
+	if len(resolveLFS) != 0 && resolveLFS[0] {
+		if err := c.checkServerVersionGreaterThanOrEqual(version1_17_0); err != nil {
+			return nil, nil, err
+		}
+		return c.getResponseReader("GET", fmt.Sprintf("/repos/%s/%s/media/%s?ref=%s", owner, repo, filepath, url.QueryEscape(ref)), nil, nil)
+	}
+
+	// normal get
 	filepath = pathEscapeSegments(filepath)
 	if c.checkServerVersionGreaterThanOrEqual(version1_14_0) != nil {
 		ref = pathEscapeSegments(ref)
-		return c.getResponse("GET", fmt.Sprintf("/repos/%s/%s/raw/%s/%s", owner, repo, ref, filepath), nil, nil)
+		return c.getResponseReader("GET", fmt.Sprintf("/repos/%s/%s/raw/%s/%s", owner, repo, ref, filepath), nil, nil)
 	}
-	return c.getResponse("GET", fmt.Sprintf("/repos/%s/%s/raw/%s?ref=%s", owner, repo, filepath, url.QueryEscape(ref)), nil, nil)
+	return c.getResponseReader("GET", fmt.Sprintf("/repos/%s/%s/raw/%s?ref=%s", owner, repo, filepath, url.QueryEscape(ref)), nil, nil)
 }
 
 // GetContents get the metadata and contents of a file in a repository

gitea/repo_file_test.go

@@ -60,6 +60,7 @@ func TestFileCreateUpdateGet(t *testing.T) {
 	assert.NoError(t, err)
 	_, resp, err := c.GetFile(repo.Owner.UserName, repo.Name, "main", testFileName)
 	assert.Error(t, err)
+	assert.EqualValues(t, "The target couldn't be found.", err.Error())
 	assert.EqualValues(t, 404, resp.StatusCode)
 
 	licence, _, err := c.GetContents(repo.Owner.UserName, repo.Name, "", "LICENSE")

gitea/settings_test.go

@@ -39,10 +39,12 @@ func TestGetGlobalSettings(t *testing.T) {
 
 	attachSettings, _, err := c.GetGlobalAttachmentSettings()
 	assert.NoError(t, err)
+	if assert.NotEmpty(t, attachSettings.AllowedTypes) {
+		attachSettings.AllowedTypes = ""
+	}
 	assert.EqualValues(t, &GlobalAttachmentSettings{
-		Enabled:      true,
-		AllowedTypes: ".docx,.gif,.gz,.jpeg,.jpg,.mp4,.log,.pdf,.png,.pptx,.txt,.xlsx,.zip",
-		MaxSize:      4,
-		MaxFiles:     5,
+		Enabled:  true,
+		MaxSize:  4,
+		MaxFiles: 5,
 	}, attachSettings)
 }