utils: add osmo_strnchr()
When finding a char in a string, I want to be able to limit the search area by
size, not only by nul terminator.
Change-Id: I48f8ace9f51f8a06796648883afcabe3b4e8b537
diff --git a/tests/utils/utils_test.ok b/tests/utils/utils_test.ok
index d5cf491..89e0fed 100644
--- a/tests/utils/utils_test.ok
+++ b/tests/utils/utils_test.ok
@@ -403,3 +403,11 @@
NULL token_len=10 buf_size=0 -> token="unchanged" rc=0
"" token_len=10 buf_size=0 -> token="unchanged" rc=0
"foo=bar" token_len=0 buf_size=0 -> token="unchanged" rc=0
+
+osmo_strnchr_test()
+osmo_strnchr("foo=bar", 8, '=') -> 3
+osmo_strnchr("foo=bar", 4, '=') -> 3
+osmo_strnchr("foo=bar", 3, '=') -> -1
+osmo_strnchr("foo=bar", 0, '=') -> -1
+osmo_strnchr("foo", 9, '=') -> -1
+osmo_strnchr("foo", 9, '\0') -> 3