config-parser: Add section iterator API
The X backend needs to iterate through all outputs.
diff --git a/shared/config-parser.c b/shared/config-parser.c
index 9772c12..7a19ea5 100644
--- a/shared/config-parser.c
+++ b/shared/config-parser.c
@@ -36,6 +36,10 @@
#include <wayland-util.h>
#include "config-parser.h"
+#define container_of(ptr, type, member) ({ \
+ const __typeof__( ((type *)0)->member ) *__mptr = (ptr); \
+ (type *)( (char *)__mptr - offsetof(type,member) );})
+
static int
handle_key(const struct config_key *key, const char *value)
{
@@ -472,6 +476,26 @@
return config;
}
+int
+weston_config_next_section(struct weston_config *config,
+ struct weston_config_section **section,
+ const char **name)
+{
+ if (*section == NULL)
+ *section = container_of(config->section_list.next,
+ struct weston_config_section, link);
+ else
+ *section = container_of((*section)->link.next,
+ struct weston_config_section, link);
+
+ if (&(*section)->link == &config->section_list)
+ return 0;
+
+ *name = (*section)->name;
+
+ return 1;
+}
+
void
weston_config_destroy(struct weston_config *config)
{