Move waiter to library

[petitboot] / discover / parser.c

diff --git a/discover/parser.c b/discover/parser.c
index 5b1a7abdab600656bc803721bef66f07bdcc9b88..87241a9cdb2e60b98913791b81eae86f371d08f3 100644 (file)
--- a/discover/parser.c
+++ b/discover/parser.c
@@ -6,25 +6,41 @@
 #include "device-handler.h"
 #include "log.h"
 #include "parser.h"
-extern struct parser kboot_parser;
+#include "parser-utils.h"
 
-/* array of parsers, ordered by priority */
-static struct parser *parsers[] = {
-       &kboot_parser,
-       NULL
-};
+extern struct parser __start_parsers[], __stop_parsers[];
 
 void iterate_parsers(struct discover_context *ctx)
 {
-       int i;
+       struct parser *parser;
 
        pb_log("trying parsers for %s\n", ctx->device_path);
 
-       for (i = 0; parsers[i]; i++) {
-               pb_log("\ttrying parser '%s'\n", parsers[i]->name);
+       for (parser = __start_parsers; parser < __stop_parsers; parser++) {
+               pb_log("\ttrying parser '%s'\n", parser->name);
                /* just use a dummy device path for now */
-               if (parsers[i]->parse(ctx))
+               if (parser->parse(ctx))
                        return;
        }
        pb_log("\tno boot_options found\n");
 }
+
+static int compare_parsers(const void *a, const void *b)
+{
+       const struct parser *parser_a = a, *parser_b = b;
+
+       if (parser_a->priority > parser_b->priority)
+               return -1;
+
+       if (parser_a->priority < parser_b->priority)
+               return 1;
+
+       return 0;
+}
+
+void parser_init(void)
+{
+       /* sort our parsers into descending priority order */
+       qsort(__start_parsers, __stop_parsers - __start_parsers,
+                       sizeof(struct parser), compare_parsers);
+}