lib: jsmn: add case-insensitive comparison

Users may want to do a case-insensitive comparison of tokens. Add simple
helpers for that.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20230921102426.1109289-3-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/jsmn.c b/lib/jsmn.c
index 3d2ada7b7f..9e624f7518 100644
--- a/lib/jsmn.c
+++ b/lib/jsmn.c
@@ -418,6 +418,18 @@ JSMN_API bool jsmn_str_eq(const char *str, const char *json, const jsmntok_t *to
 	return token->type == JSMN_STRING && jsmn_eq(str, json, token);
 }
 
+static bool jsmn_case_eq(const char *val, const char *json, const jsmntok_t *token)
+{
+	size_t token_size = jsmn_token_size(token);
+	return strlen(val) == token_size
+		&& strncasecmp(json + token->start, val, token_size) == 0;
+}
+
+JSMN_API bool jsmn_strcase_eq(const char *str, const char *json, const jsmntok_t *token)
+{
+	return token->type == JSMN_STRING && jsmn_case_eq(str, json, token);
+}
+
 JSMN_API const jsmntok_t *jsmn_skip_value(const jsmntok_t *tokens)
 {
 	int max_index = tokens[0].end;