vis: add basic infrastructure to store selections in registers

1 files changed, 35 insertions, 0 deletions

diff --git a/vis-registers.c b/vis-registers.c
index aae7fdc..3e69b13 100644
--- a/vis-registers.c
+++ b/vis-registers.c
@@ -29,6 +29,7 @@ static ssize_t read_buffer(void *context, char *data, size_t len) {
 bool register_init(Register *reg) {
 	Buffer buf;
 	buffer_init(&buf);
+	array_init_sized(&reg->selections, sizeof(SelectionRegion));
 	array_init_sized(&reg->values, sizeof(Buffer));
 	return array_add(&reg->values, &buf);
 }
@@ -36,6 +37,7 @@ bool register_init(Register *reg) {
 void register_release(Register *reg) {
 	if (!reg)
 		return;
+	array_release(&reg->selections);
 	size_t n = array_capacity(&reg->values);
 	for (size_t i = 0; i < n; i++)
 		buffer_release(array_get(&reg->values, i));
@@ -239,6 +241,39 @@ const char *vis_register_slot_get(Vis *vis, enum VisRegister id, size_t slot, si
 	return NULL;
 }
 
+Array vis_register_selections_get(Vis *vis, enum VisRegister id) {
+	Array sel;
+	array_init_sized(&sel, sizeof(Filerange));
+	Register *reg = register_from(vis, id);
+	if (!reg)
+		return sel;
+	View *view = vis->win->view;
+	size_t len = array_length(&reg->selections);
+	array_reserve(&sel, len);
+	for (size_t i = 0; i < len; i++) {
+		SelectionRegion *sr = array_get(&reg->selections, i);
+		Filerange r = view_regions_restore(view, sr);
+		if (text_range_valid(&r))
+			array_add(&sel, &r);
+	}
+	//selections_normalize(&sel);
+	return sel;
+}
+
+void vis_register_selections_set(Vis *vis, enum VisRegister id, Array *sel) {
+	Register *reg = register_from(vis, id);
+	if (!reg)
+		return;
+	array_clear(&reg->selections);
+	View *view = vis->win->view;
+	for (size_t i = 0, len = array_length(sel); i < len; i++) {
+		SelectionRegion ss;
+		Filerange *r = array_get(sel, i);
+		if (view_regions_save(view, r, &ss))
+			array_add(&reg->selections, &ss);
+	}
+}
+
 const RegisterDef vis_registers[] = {
 	[VIS_REG_DEFAULT]    = { '"', VIS_HELP("Unnamed register")                                 },
 	[VIS_REG_ZERO]       = { '0', VIS_HELP("Yank register")                                    },