update git vendor (#4059) (#4075)

* update git vendor (#4059)

* fix errors resulting from git vendor update

* fmt

models/git_diff.go

@@ -14,6 +14,7 @@ import (
 	"io/ioutil"
 	"os"
 	"os/exec"
+	"strconv"
 	"strings"
 
 	"code.gitea.io/git"
@@ -368,8 +369,15 @@ func ParsePatch(maxLines, maxLineCharacters, maxFiles int, reader io.Reader) (*D
 			a := line[beg+2 : middle]
 			b := line[middle+3:]
 			if hasQuote {
-				a = string(git.UnescapeChars([]byte(a[1 : len(a)-1])))
-				b = string(git.UnescapeChars([]byte(b[1 : len(b)-1])))
+				var err error
+				a, err = strconv.Unquote(a)
+				if err != nil {
+					return nil, fmt.Errorf("Unquote: %v", err)
+				}
+				b, err = strconv.Unquote(b)
+				if err != nil {
+					return nil, fmt.Errorf("Unquote: %v", err)
+				}
 			}
 
 			curFile = &DiffFile{

vendor/code.gitea.io/git/Gopkg.lock

@@ -0,0 +1,38 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  branch = "master"
+  name = "github.com/Unknwon/com"
+  packages = ["."]
+  revision = "7677a1d7c1137cd3dd5ba7a076d0c898a1ef4520"
+
+[[projects]]
+  name = "github.com/davecgh/go-spew"
+  packages = ["spew"]
+  revision = "6d212800a42e8ab5c146b8ace3490ee17e5225f9"
+
+[[projects]]
+  name = "github.com/mcuadros/go-version"
+  packages = ["."]
+  revision = "257f7b9a7d87427c8d7f89469a5958d57f8abd7c"
+
+[[projects]]
+  name = "github.com/pmezard/go-difflib"
+  packages = ["difflib"]
+  revision = "d8ed2627bdf02c080bf22230dbb337003b7aba2d"
+
+[[projects]]
+  name = "github.com/stretchr/testify"
+  packages = [
+    "assert",
+    "require"
+  ]
+  revision = "976c720a22c8eb4eb6a0b4348ad85ad12491a506"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  inputs-digest = "d37e90051cd58dd1f99f808626e82d64eac47f2b2334c6fcb9179bfcf2814622"
+  solver-name = "gps-cdcl"
+  solver-version = 1

vendor/code.gitea.io/git/Gopkg.toml

@@ -0,0 +1,34 @@
+# Gopkg.toml
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  name = "github.com/Unknwon/com"
+  branch = "master"
+
+[prune]
+  go-tests = true
+  unused-packages = true

vendor/code.gitea.io/git/MAINTAINERS

@@ -18,3 +18,4 @@ Antoine Girard <sapk@sapk.fr> (@sapk)
 Jonas Östanbäck <jonas.ostanback@gmail.com> (@cez81)
 David Schneiderbauer <dschneiderbauer@gmail.com> (@daviian)
 Peter Žeby <morlinest@gmail.com> (@morlinest)
+Jonas Franz <info@jonasfranz.software> (@JonasFranzDEV)

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

@@ -40,6 +40,16 @@ func (err ErrNotExist) Error() string {
 	return fmt.Sprintf("object does not exist [id: %s, rel_path: %s]", err.ID, err.RelPath)
 }
 
+// ErrBadLink entry.FollowLink error
+type ErrBadLink struct {
+	Name    string
+	Message string
+}
+
+func (err ErrBadLink) Error() string {
+	return fmt.Sprintf("%s: %s", err.Name, err.Message)
+}
+
 // ErrUnsupportedVersion error when required git version not matched
 type ErrUnsupportedVersion struct {
 	Required string

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

@@ -0,0 +1,81 @@
+// 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.
+
+package git
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+)
+
+// ParseTreeEntries parses the output of a `git ls-tree` command.
+func ParseTreeEntries(data []byte) ([]*TreeEntry, error) {
+	return parseTreeEntries(data, nil)
+}
+
+func parseTreeEntries(data []byte, ptree *Tree) ([]*TreeEntry, error) {
+	entries := make([]*TreeEntry, 0, 10)
+	for pos := 0; pos < len(data); {
+		// expect line to be of the form "<mode> <type> <sha>\t<filename>"
+		entry := new(TreeEntry)
+		entry.ptree = ptree
+		if pos+6 > len(data) {
+			return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
+		}
+		switch string(data[pos : pos+6]) {
+		case "100644":
+			entry.mode = EntryModeBlob
+			entry.Type = ObjectBlob
+			pos += 12 // skip over "100644 blob "
+		case "100755":
+			entry.mode = EntryModeExec
+			entry.Type = ObjectBlob
+			pos += 12 // skip over "100755 blob "
+		case "120000":
+			entry.mode = EntryModeSymlink
+			entry.Type = ObjectBlob
+			pos += 12 // skip over "120000 blob "
+		case "160000":
+			entry.mode = EntryModeCommit
+			entry.Type = ObjectCommit
+			pos += 14 // skip over "160000 object "
+		case "040000":
+			entry.mode = EntryModeTree
+			entry.Type = ObjectTree
+			pos += 12 // skip over "040000 tree "
+		default:
+			return nil, fmt.Errorf("unknown type: %v", string(data[pos:pos+6]))
+		}
+
+		if pos+40 > len(data) {
+			return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
+		}
+		id, err := NewIDFromString(string(data[pos : pos+40]))
+		if err != nil {
+			return nil, fmt.Errorf("Invalid ls-tree output: %v", err)
+		}
+		entry.ID = id
+		pos += 41 // skip over sha and trailing space
+
+		end := pos + bytes.IndexByte(data[pos:], '\n')
+		if end < pos {
+			return nil, fmt.Errorf("Invalid ls-tree output: %s", string(data))
+		}
+
+		// In case entry name is surrounded by double quotes(it happens only in git-shell).
+		if data[pos] == '"' {
+			entry.name, err = strconv.Unquote(string(data[pos:end]))
+			if err != nil {
+				return nil, fmt.Errorf("Invalid ls-tree output: %v", err)
+			}
+		} else {
+			entry.name = string(data[pos:end])
+		}
+
+		pos = end + 1
+		entries = append(entries, entry)
+	}
+	return entries, nil
+}

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

@@ -4,7 +4,21 @@
 
 package git
 
+import "fmt"
+
 // FileBlame return the Blame object of file
 func (repo *Repository) FileBlame(revision, path, file string) ([]byte, error) {
-	return NewCommand("blame", "--root", file).RunInDirBytes(path)
+	return NewCommand("blame", "--root", "--", file).RunInDirBytes(path)
+}
+
+// LineBlame returns the latest commit at the given line
+func (repo *Repository) LineBlame(revision, path, file string, line uint) (*Commit, error) {
+	res, err := NewCommand("blame", fmt.Sprintf("-L %d,%d", line, line), "-p", revision, "--", file).RunInDir(path)
+	if err != nil {
+		return nil, err
+	}
+	if len(res) < 40 {
+		return nil, fmt.Errorf("invalid result of blame: %s", res)
+	}
+	return repo.GetCommit(string(res[:40]))
 }

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

@@ -9,6 +9,8 @@ import (
 	"container/list"
 	"strconv"
 	"strings"
+
+	"github.com/mcuadros/go-version"
 )
 
 // GetRefCommitID returns the last commit ID string of given reference (branch or tag).
@@ -316,15 +318,35 @@ func (repo *Repository) getCommitsBeforeLimit(id SHA1, num int) (*list.List, err
 }
 
 func (repo *Repository) getBranches(commit *Commit, limit int) ([]string, error) {
-	stdout, err := NewCommand("for-each-ref", "--count="+ strconv.Itoa(limit), "--format=%(refname)", "--contains", commit.ID.String(), BranchPrefix).RunInDir(repo.Path)
+	if version.Compare(gitVersion, "2.7.0", ">=") {
+		stdout, err := NewCommand("for-each-ref", "--count="+strconv.Itoa(limit), "--format=%(refname:strip=2)", "--contains", commit.ID.String(), BranchPrefix).RunInDir(repo.Path)
+		if err != nil {
+			return nil, err
+		}
+
+		branches := strings.Fields(stdout)
+		return branches, nil
+	}
+
+	stdout, err := NewCommand("branch", "--contains", commit.ID.String()).RunInDir(repo.Path)
 	if err != nil {
 		return nil, err
 	}
 
 	refs := strings.Split(stdout, "\n")
-	branches := make([]string, len(refs)-1)
-	for i, ref := range refs[:len(refs)-1] {
-		branches[i] = strings.TrimPrefix(ref, BranchPrefix)
+
+	var max int
+	if len(refs) > limit {
+		max = limit
+	} else {
+		max = len(refs) - 1
+	}
+
+	branches := make([]string, max)
+	for i, ref := range refs[:max] {
+		parts := strings.Fields(ref)
+
+		branches[i] = parts[len(parts)-1]
 	}
 	return branches, nil
 }

vendor/code.gitea.io/git/sha1.go

@@ -5,6 +5,7 @@
 package git
 
 import (
+	"bytes"
 	"encoding/hex"
 	"fmt"
 	"strings"
@@ -26,43 +27,23 @@ func (id SHA1) Equal(s2 interface{}) bool {
 		}
 		return v == id.String()
 	case []byte:
-		if len(v) != 20 {
-			return false
-		}
-		for i, v := range v {
-			if id[i] != v {
-				return false
-			}
-		}
+		return bytes.Equal(v, id[:])
 	case SHA1:
-		for i, v := range v {
-			if id[i] != v {
-				return false
-			}
-		}
+		return v == id
 	default:
 		return false
 	}
-	return true
 }
 
 // String returns string (hex) representation of the Oid.
 func (id SHA1) String() string {
-	result := make([]byte, 0, 40)
-	hexvalues := []byte("0123456789abcdef")
-	for i := 0; i < 20; i++ {
-		result = append(result, hexvalues[id[i]>>4])
-		result = append(result, hexvalues[id[i]&0xf])
-	}
-	return string(result)
+	return hex.EncodeToString(id[:])
 }
 
 // MustID always creates a new SHA1 from a [20]byte array with no validation of input.
 func MustID(b []byte) SHA1 {
 	var id SHA1
-	for i := 0; i < 20; i++ {
-		id[i] = b[i]
-	}
+	copy(id[:], b)
 	return id
 }
 

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

@@ -5,8 +5,6 @@
 package git
 
 import (
-	"bytes"
-	"fmt"
 	"strings"
 )
 
@@ -30,84 +28,6 @@ func NewTree(repo *Repository, id SHA1) *Tree {
 	}
 }
 
-var escapeChar = []byte("\\")
-
-// UnescapeChars reverses escaped characters.
-func UnescapeChars(in []byte) []byte {
-	if bytes.Index(in, escapeChar) == -1 {
-		return in
-	}
-
-	endIdx := len(in) - 1
-	isEscape := false
-	out := make([]byte, 0, endIdx+1)
-	for i := range in {
-		if in[i] == '\\' && !isEscape {
-			isEscape = true
-			continue
-		}
-		isEscape = false
-		out = append(out, in[i])
-	}
-	return out
-}
-
-// parseTreeData parses tree information from the (uncompressed) raw
-// data from the tree object.
-func parseTreeData(tree *Tree, data []byte) ([]*TreeEntry, error) {
-	entries := make([]*TreeEntry, 0, 10)
-	l := len(data)
-	pos := 0
-	for pos < l {
-		entry := new(TreeEntry)
-		entry.ptree = tree
-		step := 6
-		switch string(data[pos : pos+step]) {
-		case "100644":
-			entry.mode = EntryModeBlob
-			entry.Type = ObjectBlob
-		case "100755":
-			entry.mode = EntryModeExec
-			entry.Type = ObjectBlob
-		case "120000":
-			entry.mode = EntryModeSymlink
-			entry.Type = ObjectBlob
-		case "160000":
-			entry.mode = EntryModeCommit
-			entry.Type = ObjectCommit
-
-			step = 8
-		case "040000":
-			entry.mode = EntryModeTree
-			entry.Type = ObjectTree
-		default:
-			return nil, fmt.Errorf("unknown type: %v", string(data[pos:pos+step]))
-		}
-		pos += step + 6 // Skip string type of entry type.
-
-		step = 40
-		id, err := NewIDFromString(string(data[pos : pos+step]))
-		if err != nil {
-			return nil, err
-		}
-		entry.ID = id
-		pos += step + 1 // Skip half of SHA1.
-
-		step = bytes.IndexByte(data[pos:], '\n')
-
-		// In case entry name is surrounded by double quotes(it happens only in git-shell).
-		if data[pos] == '"' {
-			entry.name = string(UnescapeChars(data[pos+1 : pos+step-1]))
-		} else {
-			entry.name = string(data[pos : pos+step])
-		}
-
-		pos += step + 1
-		entries = append(entries, entry)
-	}
-	return entries, nil
-}
-
 // SubTree get a sub tree by the sub dir path
 func (t *Tree) SubTree(rpath string) (*Tree, error) {
 	if len(rpath) == 0 {
@@ -142,12 +62,11 @@ func (t *Tree) ListEntries() (Entries, error) {
 	if t.entriesParsed {
 		return t.entries, nil
 	}
-	t.entriesParsed = true
 
 	stdout, err := NewCommand("ls-tree", t.ID.String()).RunInDirBytes(t.repo.Path)
 	if err != nil {
 		return nil, err
 	}
-	t.entries, err = parseTreeData(t, stdout)
+	t.entries, err = parseTreeEntries(stdout, t)
 	return t.entries, err
 }

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

@@ -5,6 +5,7 @@
 package git
 
 import (
+	"io"
 	"sort"
 	"strconv"
 	"strings"
@@ -90,6 +91,45 @@ func (te *TreeEntry) Blob() *Blob {
 	}
 }
 
+// FollowLink returns the entry pointed to by a symlink
+func (te *TreeEntry) FollowLink() (*TreeEntry, error) {
+	if !te.IsLink() {
+		return nil, ErrBadLink{te.Name(), "not a symlink"}
+	}
+
+	// read the link
+	r, err := te.Blob().Data()
+	if err != nil {
+		return nil, err
+	}
+	buf := make([]byte, te.Size())
+	_, err = io.ReadFull(r, buf)
+	if err != nil {
+		return nil, err
+	}
+
+	lnk := string(buf)
+	t := te.ptree
+
+	// traverse up directories
+	for ; t != nil && strings.HasPrefix(lnk, "../"); lnk = lnk[3:] {
+		t = t.ptree
+	}
+
+	if t == nil {
+		return nil, ErrBadLink{te.Name(), "points outside of repo"}
+	}
+
+	target, err := t.GetTreeEntryByPath(lnk)
+	if err != nil {
+		if IsErrNotExist(err) {
+			return nil, ErrBadLink{te.Name(), "broken link"}
+		}
+		return nil, err
+	}
+	return target, nil
+}
+
 // GetSubJumpablePathName return the full path of subdirectory jumpable ( contains only one directory )
 func (te *TreeEntry) GetSubJumpablePathName() string {
 	if te.IsSubModule() || !te.IsDir() {

vendor/vendor.json

@@ -3,10 +3,10 @@
 	"ignore": "test appengine",
 	"package": [
 		{
-			"checksumSHA1": "Gz+a5Qo4PCiB/Gf2f02v8HEAxDM=",
+			"checksumSHA1": "xwQNnA5geMAdbiBjBABtsjqZZMw=",
 			"path": "code.gitea.io/git",
-			"revision": "6798d0f202cdc7187c00a467b586a4bdee27e8c9",
-			"revisionTime": "2018-01-14T14:37:32Z"
+			"revision": "31f4b8e8c805438ac6d8914b38accb1d8aaf695e",
+			"revisionTime": "2018-05-26T05:17:21Z"
 		},
 		{
 			"checksumSHA1": "Qtq0kW+BnpYMOriaoCjMa86WGG8=",