2 files changed, 16 insertions, 0 deletions

diff --git a/cgit.h b/cgit.h
index bef6e5f..df42312 100644
--- a/cgit.h
+++ b/cgit.h
@@ -334,6 +334,7 @@ extern int chk_non_negative(int result, char *msg);
 extern char *trim_end(const char *str, char c);
 extern char *ensure_end(const char *str, char c);
 extern char *strlpart(char *txt, int maxlen);
+extern char *strrpart(char *txt, int maxlen);
 
 extern void strbuf_ensure_end(struct strbuf *sb, char c);
 
diff --git a/shared.c b/shared.c
index 8d08435..571fbba 100644
--- a/shared.c
+++ b/shared.c
@@ -158,6 +158,21 @@ char *strlpart(char *txt, int maxlen)
 	return result;
 }
 
+char *strrpart(char *txt, int maxlen)
+{
+	char *result;
+
+	if (!txt)
+		return txt;
+
+	if (strlen(txt) <= maxlen)
+		return txt;
+	result = xmalloc(maxlen + 1);
+	memcpy(result + 3, txt + strlen(txt) - maxlen + 4, maxlen - 3);
+	result[0] = result[1] = result[2] = '.';
+	return result;
+}
+
 void cgit_add_ref(struct reflist *list, struct refinfo *ref)
 {
 	size_t size;