From 921818bca208f0c70e85ec670074cb3905cbbc82 Mon Sep 17 00:00:00 2001
From: Niall Sheridan <nsheridan@gmail.com>
Date: Sat, 27 Aug 2016 01:32:30 +0100
Subject: Update dependencies

---
 .../pmezard/go-difflib/difflib/difflib.go          | 54 ++++++++++++++--------
 1 file changed, 34 insertions(+), 20 deletions(-)

(limited to 'vendor/github.com/pmezard/go-difflib/difflib/difflib.go')

diff --git a/vendor/github.com/pmezard/go-difflib/difflib/difflib.go b/vendor/github.com/pmezard/go-difflib/difflib/difflib.go
index 64cc40f..003e99f 100644
--- a/vendor/github.com/pmezard/go-difflib/difflib/difflib.go
+++ b/vendor/github.com/pmezard/go-difflib/difflib/difflib.go
@@ -559,10 +559,14 @@ type UnifiedDiff struct {
 func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
 	buf := bufio.NewWriter(writer)
 	defer buf.Flush()
-	w := func(format string, args ...interface{}) error {
+	wf := func(format string, args ...interface{}) error {
 		_, err := buf.WriteString(fmt.Sprintf(format, args...))
 		return err
 	}
+	ws := func(s string) error {
+		_, err := buf.WriteString(s)
+		return err
+	}
 
 	if len(diff.Eol) == 0 {
 		diff.Eol = "\n"
@@ -581,26 +585,28 @@ func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
 			if len(diff.ToDate) > 0 {
 				toDate = "\t" + diff.ToDate
 			}
-			err := w("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
-			if err != nil {
-				return err
-			}
-			err = w("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
-			if err != nil {
-				return err
+			if diff.FromFile != "" || diff.ToFile != "" {
+				err := wf("--- %s%s%s", diff.FromFile, fromDate, diff.Eol)
+				if err != nil {
+					return err
+				}
+				err = wf("+++ %s%s%s", diff.ToFile, toDate, diff.Eol)
+				if err != nil {
+					return err
+				}
 			}
 		}
 		first, last := g[0], g[len(g)-1]
 		range1 := formatRangeUnified(first.I1, last.I2)
 		range2 := formatRangeUnified(first.J1, last.J2)
-		if err := w("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
+		if err := wf("@@ -%s +%s @@%s", range1, range2, diff.Eol); err != nil {
 			return err
 		}
 		for _, c := range g {
 			i1, i2, j1, j2 := c.I1, c.I2, c.J1, c.J2
 			if c.Tag == 'e' {
 				for _, line := range diff.A[i1:i2] {
-					if err := w(" " + line); err != nil {
+					if err := ws(" " + line); err != nil {
 						return err
 					}
 				}
@@ -608,14 +614,14 @@ func WriteUnifiedDiff(writer io.Writer, diff UnifiedDiff) error {
 			}
 			if c.Tag == 'r' || c.Tag == 'd' {
 				for _, line := range diff.A[i1:i2] {
-					if err := w("-" + line); err != nil {
+					if err := ws("-" + line); err != nil {
 						return err
 					}
 				}
 			}
 			if c.Tag == 'r' || c.Tag == 'i' {
 				for _, line := range diff.B[j1:j2] {
-					if err := w("+" + line); err != nil {
+					if err := ws("+" + line); err != nil {
 						return err
 					}
 				}
@@ -669,12 +675,18 @@ func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
 	buf := bufio.NewWriter(writer)
 	defer buf.Flush()
 	var diffErr error
-	w := func(format string, args ...interface{}) {
+	wf := func(format string, args ...interface{}) {
 		_, err := buf.WriteString(fmt.Sprintf(format, args...))
 		if diffErr == nil && err != nil {
 			diffErr = err
 		}
 	}
+	ws := func(s string) {
+		_, err := buf.WriteString(s)
+		if diffErr == nil && err != nil {
+			diffErr = err
+		}
+	}
 
 	if len(diff.Eol) == 0 {
 		diff.Eol = "\n"
@@ -700,15 +712,17 @@ func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
 			if len(diff.ToDate) > 0 {
 				toDate = "\t" + diff.ToDate
 			}
-			w("*** %s%s%s", diff.FromFile, fromDate, diff.Eol)
-			w("--- %s%s%s", diff.ToFile, toDate, diff.Eol)
+			if diff.FromFile != "" || diff.ToFile != "" {
+				wf("*** %s%s%s", diff.FromFile, fromDate, diff.Eol)
+				wf("--- %s%s%s", diff.ToFile, toDate, diff.Eol)
+			}
 		}
 
 		first, last := g[0], g[len(g)-1]
-		w("***************" + diff.Eol)
+		ws("***************" + diff.Eol)
 
 		range1 := formatRangeContext(first.I1, last.I2)
-		w("*** %s ****%s", range1, diff.Eol)
+		wf("*** %s ****%s", range1, diff.Eol)
 		for _, c := range g {
 			if c.Tag == 'r' || c.Tag == 'd' {
 				for _, cc := range g {
@@ -716,7 +730,7 @@ func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
 						continue
 					}
 					for _, line := range diff.A[cc.I1:cc.I2] {
-						w(prefix[cc.Tag] + line)
+						ws(prefix[cc.Tag] + line)
 					}
 				}
 				break
@@ -724,7 +738,7 @@ func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
 		}
 
 		range2 := formatRangeContext(first.J1, last.J2)
-		w("--- %s ----%s", range2, diff.Eol)
+		wf("--- %s ----%s", range2, diff.Eol)
 		for _, c := range g {
 			if c.Tag == 'r' || c.Tag == 'i' {
 				for _, cc := range g {
@@ -732,7 +746,7 @@ func WriteContextDiff(writer io.Writer, diff ContextDiff) error {
 						continue
 					}
 					for _, line := range diff.B[cc.J1:cc.J2] {
-						w(prefix[cc.Tag] + line)
+						ws(prefix[cc.Tag] + line)
 					}
 				}
 				break
-- 
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