From c5936b5e28c8f81e974bd8d9eb901832921c2b78 Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Mon, 6 Feb 2023 00:30:41 -0600
Subject: add kai_read_vertices()

---
 src/geometry/geometry.c      | 53 ++++++++++++++++++++++++++++++++++++++++
 src/geometry/geometry.h      |  3 +++
 src/geometry/geometry.test.c | 57 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 113 insertions(+)

(limited to 'src')

diff --git a/src/geometry/geometry.c b/src/geometry/geometry.c
index 0bc8602..ea04fd3 100644
--- a/src/geometry/geometry.c
+++ b/src/geometry/geometry.c
@@ -205,3 +205,56 @@ void kai_release_input(struct ka_input_t i)
 	free(i.source);
 }
 
+
+int kai_read_vertices(struct ka_vertices_t *dest, struct kai_tag_t *src)
+{
+	CHECK_TAG_TYPE("vertices");
+
+	char *id = kai_tag_attr_to_dup(src, "id");
+	if (id == NULL) { return -1; }
+
+	dest->id = id;
+	dest->name = kai_tag_attr_to_dup(src, "name");
+
+	/* count input children */
+	int count = 0;
+	struct kai_tag_t *child;
+	for (child = src->children; child != NULL; child = child->next) {
+		if (strcmp(child->type, "input") == 0) { count += 1; }
+	}
+
+	dest->input_count = count;
+	dest->input = malloc(count * sizeof(struct ka_input_t));
+	if (dest->input == NULL) {
+		kai_release_vertices(*dest);
+		return -1;
+	}
+
+	int i=0;
+	for (child = src->children; child != NULL; child = child->next) {
+		if (strcmp(child->type, "input") == 0) {
+			int result = kai_read_input_unshared(dest->input + i, child);
+			if (result != 0) {
+				dest->input_count = i;
+				kai_release_vertices(*dest);
+				return -1;
+			}
+			i += 1;
+		}
+	}
+
+	return 0;
+}
+
+void kai_release_vertices(struct ka_vertices_t v)
+{
+	free(v.id);
+	free(v.name);
+	int i;
+	for (i=0; i<v.input_count; i++) {
+		kai_release_input(v.input[i]);
+	}
+	free(v.input);
+}
+
+
diff --git a/src/geometry/geometry.h b/src/geometry/geometry.h
index 4e260fa..a5ebab7 100644
--- a/src/geometry/geometry.h
+++ b/src/geometry/geometry.h
@@ -20,4 +20,7 @@ int kai_read_input_unshared(struct ka_input_t *dest, struct kai_tag_t *src);
 int kai_read_input_shared(struct ka_input_t *dest, struct kai_tag_t *src);
 void kai_release_input(struct ka_input_t i);
 
+int kai_read_vertices(struct ka_vertices_t *dest, struct kai_tag_t *src);
+void kai_release_vertices(struct ka_vertices_t v);
+
 #endif
diff --git a/src/geometry/geometry.test.c b/src/geometry/geometry.test.c
index f9dc3de..968060d 100644
--- a/src/geometry/geometry.test.c
+++ b/src/geometry/geometry.test.c
@@ -353,5 +353,62 @@ LILY_TEST("read input (shared)")
 #include LILY_PUSH_TEST()
 
 
+LILY_TEST("fail to read non-vertices tag")
+{
+	struct kai_tag_t *t = kai_parse_string(
+		"<tag />"
+	);
+
+	struct ka_vertices_t vertices;
+	int result = kai_read_vertices(&vertices, t);
+	CHECK_EQ(result, -1, "%d");
+
+	kai_tag_destroy(t);
+}
+#include LILY_PUSH_TEST()
+
+
+LILY_TEST("fail to read vertices tag with no specified id")
+{
+	struct kai_tag_t *t = kai_parse_string(
+		"<vertices />"
+	);
+
+	struct ka_vertices_t vertices;
+	int result = kai_read_vertices(&vertices, t);
+	CHECK_EQ(result, -1, "%d");
+	kai_tag_destroy(t);
+}
+#include LILY_PUSH_TEST()
+
+
+LILY_TEST("read vertices tag")
+{
+	struct kai_tag_t *t = kai_parse_string(
+		"<vertices id=\"xxx\" name=\"yyy\" >"
+		"	<input semantic=\"zzz\" source=\"xxx\" />"
+		"	<input semantic=\"www\" source=\"xxx\" />"
+		"</vertices>"
+	);
+
+	struct ka_vertices_t vertices;
+	vertices.input = NULL;
+
+	int result = kai_read_vertices(&vertices, t);
+	kai_tag_destroy(t);
+
+	REQUIRE_EQ(result, 0, "%d");
+	CHECK_EQS(vertices.id, "xxx");
+	CHECK_EQS(vertices.name, "yyy");
+	CHECK_EQ(vertices.input_count, 2, "%d");
+	CHECK_NEQ(vertices.input, NULL, "%p");
+
+	kai_release_vertices(vertices);
+}
+#include LILY_PUSH_TEST()
+
+
+
+
 #define LILY_FILE_END
 #include LILY_REGISTER_TESTS()
-- 
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