| /**************************************************************************** |
| * Copyright 2022 Thomas E. Dickey * |
| * * |
| * 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. * |
| ****************************************************************************/ |
| /* |
| * $Id: test_unget_wch.c,v 1.4 2022/12/10 23:31:31 tom Exp $ |
| * |
| * Demonstrate the unget_wch and unget functions. |
| */ |
| |
| #include <test.priv.h> |
| |
| #if USE_WIDEC_SUPPORT && HAVE_UNGET_WCH |
| static void |
| usage(int ok) |
| { |
| static const char *msg[] = |
| { |
| "Usage: test_unget_wch [options]" |
| ,"" |
| ,USAGE_COMMON |
| }; |
| size_t n; |
| |
| for (n = 0; n < SIZEOF(msg); n++) |
| fprintf(stderr, "%s\n", msg[n]); |
| |
| ExitProgram(ok ? EXIT_SUCCESS : EXIT_FAILURE); |
| } |
| /* *INDENT-OFF* */ |
| VERSION_COMMON() |
| /* *INDENT-ON* */ |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| int step = 0; |
| int ch; |
| |
| while ((ch = getopt(argc, argv, OPTS_COMMON)) != -1) { |
| switch (ch) { |
| case OPTS_VERSION: |
| show_version(argv); |
| ExitProgram(EXIT_SUCCESS); |
| default: |
| usage(ch == OPTS_USAGE); |
| /* NOTREACHED */ |
| } |
| } |
| if (optind < argc) |
| usage(FALSE); |
| |
| setlocale(LC_ALL, ""); |
| initscr(); |
| keypad(stdscr, TRUE); |
| cbreak(); |
| noecho(); |
| scrollok(stdscr, TRUE); |
| |
| for (;;) { |
| wint_t widechar; |
| int rc = get_wch(&widechar); |
| if (rc == KEY_CODE_YES) { |
| printw("KEY[%d] %s\n", ++step, keyname((int) widechar)); |
| ungetch((int) widechar); |
| printw("...[%d] %s\n", step, keyname(getch())); |
| } else if (widechar == QUIT || widechar == ESCAPE) { |
| break; |
| } else { |
| printw("CHR[%d] %s\n", ++step, key_name((wchar_t) widechar)); |
| unget_wch((wchar_t) widechar); |
| rc = get_wch(&widechar); |
| printw("%s[%d] %s\n", |
| ((rc == KEY_CODE_YES) |
| ? "???" |
| : "..."), |
| step, key_name((wchar_t) widechar)); |
| } |
| } |
| |
| endwin(); |
| |
| ExitProgram(EXIT_SUCCESS); |
| } |
| |
| #else |
| int |
| main(void) |
| { |
| printf("This program requires the wide-ncurses library\n"); |
| ExitProgram(EXIT_FAILURE); |
| } |
| #endif |