kvargs: fix processing a null list

[dpdk.git] / lib / librte_kvargs / rte_kvargs.c

diff --git a/lib/librte_kvargs/rte_kvargs.c b/lib/librte_kvargs/rte_kvargs.c
index 747f149..7ec1ea5 100644 (file)
--- a/lib/librte_kvargs/rte_kvargs.c
+++ b/lib/librte_kvargs/rte_kvargs.c
@@ -120,6 +120,9 @@ rte_kvargs_process(const struct rte_kvargs *kvlist,
        const struct rte_kvargs_pair *pair;
        unsigned i;
 
+       if (kvlist == NULL)
+               return 0;
+
        for (i = 0; i < kvlist->count; i++) {
                pair = &kvlist->pairs[i];
                if (key_match == NULL || strcmp(pair->key, key_match) == 0) {
@@ -168,3 +171,38 @@ rte_kvargs_parse(const char *args, const char * const valid_keys[])
 
        return kvlist;
 }
+
+__rte_experimental
+struct rte_kvargs *
+rte_kvargs_parse_delim(const char *args, const char * const valid_keys[],
+                      const char *valid_ends)
+{
+       struct rte_kvargs *kvlist = NULL;
+       char *copy;
+       size_t len;
+
+       if (valid_ends == NULL)
+               return rte_kvargs_parse(args, valid_keys);
+
+       copy = strdup(args);
+       if (copy == NULL)
+               return NULL;
+
+       len = strcspn(copy, valid_ends);
+       copy[len] = '\0';
+
+       kvlist = rte_kvargs_parse(copy, valid_keys);
+
+       free(copy);
+       return kvlist;
+}
+
+__rte_experimental
+int
+rte_kvargs_strcmp(const char *key __rte_unused,
+                 const char *value, void *opaque)
+{
+       const char *str = opaque;
+
+       return -abs(strcmp(str, value));
+}