1 /*-
2  * Copyright (c) 2013-2018 Devin Teske <dteske@FreeBSD.org>
80  * changes in terminal size in-between calls.
97 		maxsize->ws_row = TTY_DEFAULT_ROWS;  in tty_maxsize_update()
98 		maxsize->ws_col = TTY_DEFAULT_COLS;  in tty_maxsize_update()
107  * the active video resolution of the X11 environment.
110  * `maxsize'. Since video resolution changes are less common and more obtrusive
131 	snprintf(cmdbuf, LINE_MAX, "%s --print-maxsize 2>&1", dialog);  in x11_maxsize_update()
145 	/* Check for X11-related errors */  in x11_maxsize_update()
160 	maxsize->ws_row = (unsigned short)strtonum(  in x11_maxsize_update()
162 	maxsize->ws_col = (unsigned short)strtonum(  in x11_maxsize_update()
177 	return (maxsize->ws_row);  in dialog_maxrows()
194 			return (maxsize->ws_col - 2);  in dialog_maxcols()
196 			return (maxsize->ws_col);  in dialog_maxcols()
198 		return (maxsize->ws_col);  in dialog_maxcols()
213 	return (maxsize->ws_col);  in tty_maxcols()
217  * Spawn an [X]dialog(1) `--gauge' box with a `--prompt' value of init_prompt.
220  * (data written to the file descriptor is seen as standard-in by the spawned
236 	int stdin_pipe[2] = { -1, -1 };  in dialog_spawn_gauge()
248 		height -= use_shadow ? 5 : 4;  in dialog_spawn_gauge()
260 		sprintf(dargv[n++], "--title");  in dialog_spawn_gauge()
265 		sprintf(dargv[n++], "--title");  in dialog_spawn_gauge()
273 		sprintf(dargv[n++], "--backtitle");  in dialog_spawn_gauge()
279 		sprintf(dargv[n++], "--colors");  in dialog_spawn_gauge()
284 		sprintf(dargv[n++], "--left");  in dialog_spawn_gauge()
287 		 * NOTE: Xdialog(1)'s `--wrap' appears to be broken for the  in dialog_spawn_gauge()
288 		 * `--gauge' widget prompt-updates. Add it anyway (in-case it  in dialog_spawn_gauge()
293 		sprintf(dargv[n++], "--wrap");  in dialog_spawn_gauge()
297 	sprintf(dargv[n++], "--gauge");  in dialog_spawn_gauge()
317 		else if (*dargv[i] == '-' && *(dargv[i] + 1) == '-')  in dialog_spawn_gauge()
338  * newlines and escaped-newlines into account.
414 			/* If second backslash, count as a single-char */  in dialog_prompt_longestline()
489  * dwidth - 4). Also discounts dialog(1) color escape codes if enabled (via
521 			/* If second backslash, count as a single-char */  in dialog_prompt_wrappedlines()
544 			 * Work backward to find the first whitespace on-which  in dialog_prompt_wrappedlines()
550 				cp--;  in dialog_prompt_wrappedlines()
551 				n--;  in dialog_prompt_wrappedlines()
587  * if you plan to combine multiple strings into a single prompt text. In lead-
610 	while (--cp >= prompt) {  in dialog_prompt_nlstate()
614 		 * get to an escaped newline first, this prompt ends in an un-  in dialog_prompt_nlstate()
619 		else if (*cp == 'n' && --cp > prompt && *cp == '\\')  in dialog_prompt_nlstate()