be4cd8edd0
We sometimes need to test what keys a client receives when specific keys are pressed. This small helper simply runs in a terminal and receives raw keyboard input and prints it to stdout with debugging information. This can definitely be improved with the help of the TSM state-machine to print more useful information and directly parse the input. However, this is better than nothing. Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/*
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* test_key - Test client key-input
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*
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* Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <string.h>
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#include <termios.h>
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int main()
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{
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int res;
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unsigned char buf;
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struct termios omode, nmode;
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bool reset = false;
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fprintf(stderr, "Quit with 'q' (maybe followed by 'enter'/'return')\r\n");
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fprintf(stderr, "Maybe your terminal may be unusable after this, use 'reset' to fix it\r\n");
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if (tcgetattr(0, &omode) < 0) {
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fprintf(stderr, "cannot retrieve terminal attributes (%d): %m\r\n",
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errno);
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} else {
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memcpy(&nmode, &omode, sizeof(nmode));
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cfmakeraw(&nmode);
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if (tcsetattr(0, TCSANOW, &nmode) < 0)
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fprintf(stderr, "cannot set terminal attributes (%d): %m\r\n",
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errno);
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else
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reset = true;
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}
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while (1) {
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res = fread(&buf, 1, 1, stdin);
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if (res != 1) {
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fprintf(stderr, "error on stdin: %d %d: %m\r\n",
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res, errno);
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break;
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}
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if (buf == '\n')
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fprintf(stderr, "key: <newline>\r\n");
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else
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fprintf(stderr, "key: %x %u %o '%c'\r\n",
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(int)buf, buf, buf, buf);
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if (buf == 'q')
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break;
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}
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if (reset && tcsetattr(0, TCSANOW, &omode) < 0)
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fprintf(stderr, "cannot reset terminal attributes (%d): %m\r\n",
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errno);
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return 0;
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}
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