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authorAntonio Jesus Navarro Perez <antnavper@gmail.com>2017-05-10 16:47:15 +0200
committerAntonio Jesus Navarro Perez <antnavper@gmail.com>2017-05-23 11:05:14 +0200
commit2f293f4a5214ccba5bdf0b82ff8b62ed39144078 (patch)
tree8942869ff31dbf3aa950c1d3cddb3a0de8ca0aa3 /utils/binary/read.go
parent2ff77a8d93529cefdca922dbed89d4b1cd0ee8e5 (diff)
downloadgo-git-2f293f4a5214ccba5bdf0b82ff8b62ed39144078.tar.gz
format/diff: unified diff encoder and public API
- Added Patch interface - Added a Unified Diff encoder from Patches - Added Change method to generate Patches - Added Changes method to generate Patches - Added Tree method to generate Patches - Added Commit method to generate Patches
Diffstat (limited to 'utils/binary/read.go')
-rw-r--r--utils/binary/read.go31
1 files changed, 31 insertions, 0 deletions
diff --git a/utils/binary/read.go b/utils/binary/read.go
index 0bcf11a..c256ffe 100644
--- a/utils/binary/read.go
+++ b/utils/binary/read.go
@@ -3,6 +3,7 @@
package binary
import (
+ "bufio"
"encoding/binary"
"io"
@@ -122,3 +123,33 @@ func ReadHash(r io.Reader) (plumbing.Hash, error) {
return h, nil
}
+
+const sniffLen = 8000
+
+// IsBinary detects if data is a binary value based on:
+// http://git.kernel.org/cgit/git/git.git/tree/xdiff-interface.c?id=HEAD#n198
+func IsBinary(r io.Reader) (bool, error) {
+ reader := bufio.NewReader(r)
+ c := 0
+ for {
+ if c == sniffLen {
+ break
+ }
+
+ b, err := reader.ReadByte()
+ if err == io.EOF {
+ break
+ }
+ if err != nil {
+ return false, err
+ }
+
+ if b == byte(0) {
+ return true, nil
+ }
+
+ c++
+ }
+
+ return false, nil
+}