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authorDmitry Vyukov <dvyukov@google.com>2020-07-04 11:12:55 +0200
committerDmitry Vyukov <dvyukov@google.com>2020-07-04 15:05:30 +0200
commitc7d7f10bdff703e4a3c0414e8a33d4e45c91eb35 (patch)
tree0dff0ee1f98dbfa3ad8776112053a450d176592b /vendor/github.com/sourcegraph/go-diff/diff/diff.go
parent9573094ce235bd9afe88f5da27a47dd6bcc1e13b (diff)
go.mod: vendor golangci-lint
Diffstat (limited to 'vendor/github.com/sourcegraph/go-diff/diff/diff.go')
-rw-r--r--vendor/github.com/sourcegraph/go-diff/diff/diff.go76
1 files changed, 76 insertions, 0 deletions
diff --git a/vendor/github.com/sourcegraph/go-diff/diff/diff.go b/vendor/github.com/sourcegraph/go-diff/diff/diff.go
new file mode 100644
index 000000000..646602a6c
--- /dev/null
+++ b/vendor/github.com/sourcegraph/go-diff/diff/diff.go
@@ -0,0 +1,76 @@
+package diff
+
+import "bytes"
+
+// NOTE: types are code-generated in diff.pb.go.
+
+//go:generate protoc -I../../../.. -I ../../../../github.com/gogo/protobuf/protobuf -I. --gogo_out=. diff.proto
+
+// Stat computes the number of lines added/changed/deleted in all
+// hunks in this file's diff.
+func (d *FileDiff) Stat() Stat {
+ total := Stat{}
+ for _, h := range d.Hunks {
+ total.add(h.Stat())
+ }
+ return total
+}
+
+// Stat computes the number of lines added/changed/deleted in this
+// hunk.
+func (h *Hunk) Stat() Stat {
+ lines := bytes.Split(h.Body, []byte{'\n'})
+ var last byte
+ st := Stat{}
+ for _, line := range lines {
+ if len(line) == 0 {
+ last = 0
+ continue
+ }
+ switch line[0] {
+ case '-':
+ if last == '+' {
+ st.Added--
+ st.Changed++
+ last = 0 // next line can't change this one since this is already a change
+ } else {
+ st.Deleted++
+ last = line[0]
+ }
+ case '+':
+ if last == '-' {
+ st.Deleted--
+ st.Changed++
+ last = 0 // next line can't change this one since this is already a change
+ } else {
+ st.Added++
+ last = line[0]
+ }
+ default:
+ last = 0
+ }
+ }
+ return st
+}
+
+var (
+ hunkPrefix = []byte("@@ ")
+)
+
+const hunkHeader = "@@ -%d,%d +%d,%d @@"
+
+// diffTimeParseLayout is the layout used to parse the time in unified diff file
+// header timestamps.
+// See https://www.gnu.org/software/diffutils/manual/html_node/Detailed-Unified.html.
+const diffTimeParseLayout = "2006-01-02 15:04:05 -0700"
+
+// diffTimeFormatLayout is the layout used to format (i.e., print) the time in unified diff file
+// header timestamps.
+// See https://www.gnu.org/software/diffutils/manual/html_node/Detailed-Unified.html.
+const diffTimeFormatLayout = "2006-01-02 15:04:05.000000000 -0700"
+
+func (s *Stat) add(o Stat) {
+ s.Added += o.Added
+ s.Changed += o.Changed
+ s.Deleted += o.Deleted
+}