common: implement ident and selector manipulation

common/ident.c

@@ -0,0 +1,69 @@
+#include <ivy/ident.h>
+#include <blue/core/queue.h>
+#include <blue/object/string.h>
+#include <stdlib.h>
+#include <string.h>
+
+struct ivy_ident *ivy_ident_create(void)
+{
+	struct ivy_ident *id = malloc(sizeof *id);
+
+	if (!id) {
+		return NULL;
+	}
+
+	memset(id, 0x0, sizeof *id);
+
+	return id;
+}
+
+void ivy_ident_destroy(struct ivy_ident *ident)
+{
+	b_queue_iterator it = {0};
+	b_queue_iterator_begin(&ident->id_parts, &it);
+
+	while (b_queue_iterator_is_valid(&it)) {
+		struct ivy_ident_part *part = b_unbox(struct ivy_ident_part, it.entry, p_entry);
+		b_queue_iterator_erase(&it);
+		
+		free(part->p_str);
+		free(part);
+	}
+
+	free(ident);
+}
+
+void ivy_ident_add_part(struct ivy_ident *ident, const char *s)
+{
+	struct ivy_ident_part *part = malloc(sizeof *part);
+	if (!part) {
+		return;
+	}
+
+	memset(part, 0x0, sizeof *part);
+
+	part->p_str = b_strdup(s);
+
+	b_queue_push_back(&ident->id_parts, &part->p_entry);
+}
+
+size_t ivy_ident_to_string(const struct ivy_ident *ident, char *out, size_t max)
+{
+	b_strv_builder strv;
+	b_strv_builder_begin(&strv, out, max);
+
+	int i = 0;
+	b_queue_iterator it = {0};
+	b_queue_foreach (&it, &ident->id_parts) {
+		if (i > 0) {
+			b_strv_builder_add(&strv, ".");
+		}
+
+		struct ivy_ident_part *part = b_unbox(struct ivy_ident_part, it.entry, p_entry);
+		b_strv_builder_add(&strv, part->p_str);
+		i++;
+	}
+
+	/* TODO return string length. */
+	return 0;
+}