Add single commit API support (#5843)

* add single commit API support

vendor/code.gitea.io/git/commit.go

@@ -1,4 +1,5 @@
 // Copyright 2015 The Gogs Authors. All rights reserved.
+// Copyright 2018 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
@@ -9,6 +10,7 @@ import (
 	"bytes"
 	"container/list"
 	"fmt"
+	"io"
 	"net/http"
 	"strconv"
 	"strings"
@@ -279,6 +281,56 @@ func (c *Commit) GetSubModule(entryname string) (*SubModule, error) {
 	return nil, nil
 }
 
+// CommitFileStatus represents status of files in a commit.
+type CommitFileStatus struct {
+	Added    []string
+	Removed  []string
+	Modified []string
+}
+
+// NewCommitFileStatus creates a CommitFileStatus
+func NewCommitFileStatus() *CommitFileStatus {
+	return &CommitFileStatus{
+		[]string{}, []string{}, []string{},
+	}
+}
+
+// GetCommitFileStatus returns file status of commit in given repository.
+func GetCommitFileStatus(repoPath, commitID string) (*CommitFileStatus, error) {
+	stdout, w := io.Pipe()
+	done := make(chan struct{})
+	fileStatus := NewCommitFileStatus()
+	go func() {
+		scanner := bufio.NewScanner(stdout)
+		for scanner.Scan() {
+			fields := strings.Fields(scanner.Text())
+			if len(fields) < 2 {
+				continue
+			}
+
+			switch fields[0][0] {
+			case 'A':
+				fileStatus.Added = append(fileStatus.Added, fields[1])
+			case 'D':
+				fileStatus.Removed = append(fileStatus.Removed, fields[1])
+			case 'M':
+				fileStatus.Modified = append(fileStatus.Modified, fields[1])
+			}
+		}
+		done <- struct{}{}
+	}()
+
+	stderr := new(bytes.Buffer)
+	err := NewCommand("show", "--name-status", "--pretty=format:''", commitID).RunInDirPipeline(repoPath, w, stderr)
+	w.Close() // Close writer to exit parsing goroutine
+	if err != nil {
+		return nil, concatenateError(err, stderr.String())
+	}
+
+	<-done
+	return fileStatus, nil
+}
+
 // GetFullCommitID returns full length (40) of commit ID by given short SHA in a repository.
 func GetFullCommitID(repoPath, shortID string) (string, error) {
 	if len(shortID) >= 40 {

vendor/code.gitea.io/git/repo_commit.go

@@ -140,6 +140,9 @@ func (repo *Repository) GetCommit(commitID string) (*Commit, error) {
 		var err error
 		commitID, err = NewCommand("rev-parse", commitID).RunInDir(repo.Path)
 		if err != nil {
+			if strings.Contains(err.Error(), "unknown revision or path") {
+				return nil, ErrNotExist{commitID, ""}
+			}
 			return nil, err
 		}
 	}

vendor/code.gitea.io/git/submodule.go

@@ -29,13 +29,12 @@ func NewSubModuleFile(c *Commit, refURL, refID string) *SubModuleFile {
 	}
 }
 
-// RefURL guesses and returns reference URL.
-func (sf *SubModuleFile) RefURL(urlPrefix string, parentPath string) string {
-	if sf.refURL == "" {
+func getRefURL(refURL, urlPrefix, parentPath string) string {
+	if refURL == "" {
 		return ""
 	}
 
-	url := strings.TrimSuffix(sf.refURL, ".git")
+	url := strings.TrimSuffix(refURL, ".git")
 
 	// git://xxx/user/repo
 	if strings.HasPrefix(url, "git://") {
@@ -67,12 +66,21 @@ func (sf *SubModuleFile) RefURL(urlPrefix string, parentPath string) string {
 		if strings.Contains(urlPrefix, url[i+1:j]) {
 			return urlPrefix + url[j+1:]
 		}
+		if strings.HasPrefix(url, "ssh://") || strings.HasPrefix(url, "git+ssh://") {
+			k := strings.Index(url[j+1:], "/")
+			return "http://" + url[i+1:j] + "/" + url[j+1:][k+1:]
+		}
 		return "http://" + url[i+1:j] + "/" + url[j+1:]
 	}
 
 	return url
 }
 
+// RefURL guesses and returns reference URL.
+func (sf *SubModuleFile) RefURL(urlPrefix string, parentPath string) string {
+	return getRefURL(sf.refURL, urlPrefix, parentPath)
+}
+
 // RefID returns reference ID.
 func (sf *SubModuleFile) RefID() string {
 	return sf.refID

vendor/code.gitea.io/git/tree.go

@@ -18,6 +18,9 @@ type Tree struct {
 
 	entries       Entries
 	entriesParsed bool
+
+	entriesRecursive 	Entries
+	entriesRecursiveParsed 	bool
 }
 
 // NewTree create a new tree according the repository and commit id
@@ -67,20 +70,29 @@ func (t *Tree) ListEntries() (Entries, error) {
 	if err != nil {
 		return nil, err
 	}
+
 	t.entries, err = parseTreeEntries(stdout, t)
+	if err == nil {
+		t.entriesParsed = true
+	}
+
 	return t.entries, err
 }
 
 // ListEntriesRecursive returns all entries of current tree recursively including all subtrees
 func (t *Tree) ListEntriesRecursive() (Entries, error) {
-	if t.entriesParsed {
-		return t.entries, nil
+	if t.entriesRecursiveParsed {
+		return t.entriesRecursive, nil
 	}
 	stdout, err := NewCommand("ls-tree", "-t", "-r", t.ID.String()).RunInDirBytes(t.repo.Path)
-
 	if err != nil {
 		return nil, err
 	}
-	t.entries, err = parseTreeEntries(stdout, t)
-	return t.entries, err
+
+	t.entriesRecursive, err = parseTreeEntries(stdout, t)
+	if err == nil {
+		t.entriesRecursiveParsed = true
+	}
+
+	return t.entriesRecursive, err
 }