1 files changed, 18 insertions, 0 deletions
diff --git a/common.go b/common.go
new file mode 100644
index 0000000..51486b8
--- /dev/null
+++ b/common.go
@@ -0,0 +1,18 @@
+package git
+
+import "strings"
+
+// CountLines returns the number of lines in a string à la git, this is
+// The newline character is assumed to be '\n'.  The empty string
+// contains 0 lines.  If the last line of the string doesn't end with a
+// newline, it will still be considered a line.
+func CountLines(s string) int {
+	if s == "" {
+		return 0
+	}
+	nEol := strings.Count(s, "\n")
+	if strings.HasSuffix(s, "\n") {
+		return nEol
+	}
+	return nEol + 1
+}