vis-lua: add cursor.selection property

2 files changed, 17 insertions, 0 deletions

diff --git a/README.md b/README.md
index 9273dfc..0ad5141 100644
--- a/README.md
+++ b/README.md
@@ -605,6 +605,7 @@ At this time there exists no API stability guarantees.
      - `to(line, col)`
      - `pos` bytes from start of file (0 based)
      - `number` zero based index of cursor
+     - `selection` either `nil` or a table `{start, finish}`
 
 Most of the exposed objects are managed by the C core. Allthough there
 is a simple object life time management mechanism in place, it is still
diff --git a/vis-lua.c b/vis-lua.c
index 3533681..4b484b2 100644
--- a/vis-lua.c
+++ b/vis-lua.c
@@ -645,6 +645,22 @@ static int window_cursor_index(lua_State *L) {
 			lua_pushunsigned(L, view_cursors_number(cur)+1);
 			return 1;
 		}
+
+		if (strcmp(key, "selection") == 0) {
+			Filerange sel = view_cursors_selection_get(cur);
+			if (text_range_valid(&sel)) {
+				lua_createtable(L, 0, 2);
+				lua_pushstring(L, "start");
+				lua_pushunsigned(L, sel.start);
+				lua_settable(L, -3);
+				lua_pushstring(L, "finish");
+				lua_pushunsigned(L, sel.end);
+				lua_settable(L, -3);
+			} else {
+				lua_pushnil(L);
+			}
+			return 1;
+		}
 	}
 
 	return index_common(L);