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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /REORG.TODO/manual/examples/termios.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.gz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.tar.xz glibc-5046dbb4a7eba5eccfd258f92f4735c9ffc8d069.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'REORG.TODO/manual/examples/termios.c')
-rw-r--r-- | REORG.TODO/manual/examples/termios.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/REORG.TODO/manual/examples/termios.c b/REORG.TODO/manual/examples/termios.c new file mode 100644 index 0000000000..8ac2f626d5 --- /dev/null +++ b/REORG.TODO/manual/examples/termios.c @@ -0,0 +1,77 @@ +/* Noncanonical Mode Example + Copyright (C) 1991-2017 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, if not, see <http://www.gnu.org/licenses/>. +*/ + +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <termios.h> + +/* Use this variable to remember original terminal attributes. */ + +struct termios saved_attributes; + +void +reset_input_mode (void) +{ + tcsetattr (STDIN_FILENO, TCSANOW, &saved_attributes); +} + +void +set_input_mode (void) +{ + struct termios tattr; + char *name; + + /* Make sure stdin is a terminal. */ + if (!isatty (STDIN_FILENO)) + { + fprintf (stderr, "Not a terminal.\n"); + exit (EXIT_FAILURE); + } + + /* Save the terminal attributes so we can restore them later. */ + tcgetattr (STDIN_FILENO, &saved_attributes); + atexit (reset_input_mode); + +/*@group*/ + /* Set the funny terminal modes. */ + tcgetattr (STDIN_FILENO, &tattr); + tattr.c_lflag &= ~(ICANON|ECHO); /* Clear ICANON and ECHO. */ + tattr.c_cc[VMIN] = 1; + tattr.c_cc[VTIME] = 0; + tcsetattr (STDIN_FILENO, TCSAFLUSH, &tattr); +} +/*@end group*/ + +int +main (void) +{ + char c; + + set_input_mode (); + + while (1) + { + read (STDIN_FILENO, &c, 1); + if (c == '\004') /* @kbd{C-d} */ + break; + else + putchar (c); + } + + return EXIT_SUCCESS; +} |