argconfig: add argconfig_get_value()

This is to get the option value by name.

Signed-off-by: Tokunori Ikegami <[email protected]>

Author: ikegami-t

util/argconfig.c

@@ -429,3 +429,16 @@ bool argconfig_parse_seen(struct argconfig_commandline_options *s,
 
 	return false;
 }
+
+void *argconfig_get_value(struct argconfig_commandline_options *s, const char *option)
+{
+	for (; s && s->option; s++) {
+		if (!strcmp(s->option, option)) {
+			if (s->seen)
+				return s->default_value;
+			break;
+		}
+	}
+
+	return NULL;
+}

util/argconfig.h

@@ -190,4 +190,5 @@ int argconfig_parse_comma_sep_array_u64(char *string, __u64 *val,
 void print_word_wrapped(const char *s, int indent, int start, FILE *stream);
 bool argconfig_parse_seen(struct argconfig_commandline_options *options,
 			  const char *option);
+void *argconfig_get_value(struct argconfig_commandline_options *s, const char *option);
 #endif