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Diffstat (limited to 'test/demo_tabs.c')
| -rw-r--r-- | test/demo_tabs.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/test/demo_tabs.c b/test/demo_tabs.c new file mode 100644 index 000000000000..51850e4cb992 --- /dev/null +++ b/test/demo_tabs.c @@ -0,0 +1,119 @@ +/**************************************************************************** + * Copyright (c) 2019 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/* + * Author: Thomas E. Dickey + * + * $Id: demo_tabs.c,v 1.4 2019/02/24 00:38:13 tom Exp $ + * + * A simple demo of tabs in curses. + */ +#define USE_TINFO +#include "test.priv.h" + +static void +usage(void) +{ + static const char *msg[] = + { + "Usage: demo_tabs [options]", + "", + "Print a grid to test tab-stops with the curses interface", + "", + "Options:", + " -l COUNT total number of lines to show", + " -t NUM set TABSIZE variable to the given value", + }; + unsigned n; + for (n = 0; n < SIZEOF(msg); ++n) { + fprintf(stderr, "%s\n", msg[n]); + } + ExitProgram(EXIT_FAILURE); +} + +int +main(int argc, char *argv[]) +{ + int tabstop; + int n, col, row, step; + int line_limit = -1; + int curses_stops = -1; + + while ((n = getopt(argc, argv, "l:t:")) != -1) { + switch (n) { + case 'l': + line_limit = atoi(optarg); + break; + case 't': + curses_stops = atoi(optarg); + break; + default: + usage(); + break; + } + } + + initscr(); + noecho(); + cbreak(); + if (curses_stops > 0) + set_tabsize(curses_stops); +#if HAVE_TIGETNUM + tabstop = tigetnum("it"); + if (tabstop <= 0) +#endif + tabstop = 8; + for (row = 0; row < LINES; ++row) { + move(row, 0); + for (col = step = 0; col < COLS - 1; ++col) { + if (row == 0) { + chtype ch = '-'; + if ((col % tabstop) == 0) + ch = '+'; + addch(ch); + } else if (col + 1 < row) { + addch('*'); + } else { + printw("%x", step); + col = (row + (tabstop * ++step)); + col /= tabstop; + col *= tabstop; + col -= 1; + if ((col + tabstop) < COLS) + addch('\t'); + refresh(); + } + } + addch('\n'); + if (line_limit > 0 && row >= line_limit) + break; + } + getch(); + endwin(); + ExitProgram(EXIT_SUCCESS); +} |