From 6599869f2881a7ae690a68e5a08e2c2a0703aaf2 Mon Sep 17 00:00:00 2001
From: Unknwon <u@gogs.io>
Date: Sat, 17 Oct 2015 17:25:45 -0400
Subject: [PATCH] #1790 fast return for too large diff

---
 gogs.go            |  2 +-
 models/git_diff.go | 14 +++-----------
 templates/.VERSION |  2 +-
 3 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/gogs.go b/gogs.go
index f1e83532f0..a7d44a2aa6 100644
--- a/gogs.go
+++ b/gogs.go
@@ -17,7 +17,7 @@ import (
 	"github.com/gogits/gogs/modules/setting"
 )
 
-const APP_VER = "0.6.16.1015 Beta"
+const APP_VER = "0.6.16.1017 Beta"
 
 func init() {
 	runtime.GOMAXPROCS(runtime.NumCPU())
diff --git a/models/git_diff.go b/models/git_diff.go
index 6698565001..2335e46808 100644
--- a/models/git_diff.go
+++ b/models/git_diff.go
@@ -86,7 +86,6 @@ func ParsePatch(pid int64, maxlines int, cmd *exec.Cmd, reader io.Reader) (*Diff
 		}
 
 		leftLine, rightLine int
-		isTooLong           bool
 		// FIXME: Should use cache in the future.
 		buf bytes.Buffer
 	)
@@ -107,9 +106,10 @@ func ParsePatch(pid int64, maxlines int, cmd *exec.Cmd, reader io.Reader) (*Diff
 		i = i + 1
 
 		// Diff data too large, we only show the first about maxlines lines
-		if i == maxlines {
-			isTooLong = true
+		if i >= maxlines {
 			log.Warn("Diff data too large")
+			diff.Files = nil
+			return diff, nil
 		}
 
 		switch {
@@ -120,10 +120,6 @@ func ParsePatch(pid int64, maxlines int, cmd *exec.Cmd, reader io.Reader) (*Diff
 			curSection.Lines = append(curSection.Lines, diffLine)
 			continue
 		case line[0] == '@':
-			if isTooLong {
-				break
-			}
-
 			curSection = &DiffSection{}
 			curFile.Sections = append(curFile.Sections, curSection)
 			ss := strings.Split(line, "@@")
@@ -162,10 +158,6 @@ func ParsePatch(pid int64, maxlines int, cmd *exec.Cmd, reader io.Reader) (*Diff
 
 		// Get new file.
 		if strings.HasPrefix(line, DIFF_HEAD) {
-			if isTooLong {
-				break
-			}
-
 			beg := len(DIFF_HEAD)
 			a := line[beg : (len(line)-beg)/2+beg]
 
diff --git a/templates/.VERSION b/templates/.VERSION
index 581883e0ca..ddb56b4d0b 100644
--- a/templates/.VERSION
+++ b/templates/.VERSION
@@ -1 +1 @@
-0.6.16.1015 Beta
\ No newline at end of file
+0.6.16.1017 Beta
\ No newline at end of file