start autocomplete

1 files changed, 35 insertions, 0 deletions

diff --git a/command.c b/command.c
index 727b2c6..f0dd1ec 100644
--- a/command.c
+++ b/command.c
@@ -204,6 +204,39 @@ void command_execute(Ted *ted, Command c, i64 argument) {
 			}
 		}
 		break;
+		
+	case CMD_AUTOCOMPLETE: {
+		if (buffer && !buffer->view_only && !buffer->is_line_buffer) {
+			buffer->selection = false;
+			if (is_word(buffer_char_after_cursor(buffer)))
+				buffer_cursor_move_right_words(buffer, 1);
+			else
+				buffer_scroll_to_cursor(buffer);
+			char *start = str32_to_utf8_cstr(buffer_word_at_cursor(buffer));
+			char *completions[2] = {0};
+			size_t ncompletions = tags_beginning_with(ted, start, completions, 2);
+			switch (ncompletions) {
+			case 0:
+				ted->cursor_error_time = time_get_seconds();
+				break;
+			case 1: {
+				char *str = completions[0] + strlen(start);
+				buffer_start_edit_chain(buffer); // don't merge with other edits
+				buffer_insert_utf8_at_cursor(buffer, str);
+				buffer_end_edit_chain(buffer);
+			} break;
+			case 2:
+				// open autocomplete selection menu
+				ted->autocomplete = true;
+				break;
+			default: assert(0); break;
+			}
+			free(completions[0]);
+			free(completions[1]);
+			free(start);
+		}
+	} break;
+		
 	case CMD_UNDO:
 		if (buffer) buffer_undo(buffer, argument);
 		break;
@@ -301,6 +334,8 @@ void command_execute(Ted *ted, Command c, i64 argument) {
 		if (*ted->error_shown) {
 			// dismiss error box
 			*ted->error_shown = '\0';
+		} else if (ted->autocomplete) {
+			ted->autocomplete = false;
 		} else if (ted->menu) {
 			menu_escape(ted);
 		} else if (ted->find) {