add config parser

src/utils/config.c

@@ -1,5 +1,42 @@
 #include "utils/config.h"
 
-int nothing() {
-    return 0;
-}
+#include <cyaml/cyaml.h>
+
+static const cyaml_config_t cyaml_config = {
+	.log_fn = cyaml_log,
+	.mem_fn = cyaml_mem,
+	.log_level = CYAML_LOG_WARNING,
+};
+
+static const cyaml_schema_field_t top_mapping_schema[] = {
+	CYAML_FIELD_STRING_PTR("host", CYAML_FLAG_POINTER, cws_config, host, 0, CYAML_UNLIMITED),
+	CYAML_FIELD_STRING_PTR("port", CYAML_FLAG_POINTER, cws_config, port, 0, CYAML_UNLIMITED),
+	CYAML_FIELD_STRING_PTR("cert", CYAML_FLAG_POINTER, cws_config, cert, 0, CYAML_UNLIMITED),
+	CYAML_FIELD_STRING_PTR("key", CYAML_FLAG_POINTER, cws_config, key, 0, CYAML_UNLIMITED), CYAML_FIELD_END};
+
+static const cyaml_schema_value_t top_schema = {
+	CYAML_VALUE_MAPPING(CYAML_FLAG_POINTER, cws_config, top_mapping_schema),
+};
+
+cws_config *cws_config_init(void) {
+	char *path = "config.yaml";
+	cws_config *config;
+
+	cyaml_err_t err = cyaml_load_file(path, &cyaml_config, &top_schema, (cyaml_data_t **)&config, NULL);
+	if (err != CYAML_OK) {
+		return NULL;
+	}
+
+	return config;
+}
+
+void cws_config_free(cws_config *config) {
+	cyaml_err_t err = cyaml_free(&cyaml_config, &top_schema, config, 0);
+	if (err != CYAML_OK) {
+		/* Handle */
+	}
+}
+
+/*
+	https://github.com/tlsa/libcyaml/blob/main/docs/guide.md
+*/