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showkey: make showkey -a work on any stdin
function old new delta showkey_main 496 513 +17 Signed-off-by: Harald Becker <ralda@gmx.de> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -56,37 +56,45 @@ int showkey_main(int argc UNUSED_PARAM, char **argv)
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// FIXME: aks are all mutually exclusive
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// FIXME: aks are all mutually exclusive
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getopt32(argv, "aks");
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getopt32(argv, "aks");
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// get keyboard settings
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xioctl(STDIN_FILENO, KDGKBMODE, &kbmode);
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printf("kb mode was %s\n\nPress any keys. Program terminates %s\n\n",
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kbmode == K_RAW ? "RAW" :
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(kbmode == K_XLATE ? "XLATE" :
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(kbmode == K_MEDIUMRAW ? "MEDIUMRAW" :
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(kbmode == K_UNICODE ? "UNICODE" : "UNKNOWN")))
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, (option_mask32 & OPT_a) ? "on EOF (ctrl-D)" : "10s after last keypress"
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);
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// prepare for raw mode
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// prepare for raw mode
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xget1(&tio, &tio0);
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xget1(&tio, &tio0);
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// put stdin in raw mode
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// put stdin in raw mode
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xset1(&tio);
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xset1(&tio);
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#define press_keys "Press any keys, program terminates %s:\r\n\n"
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if (option_mask32 & OPT_a) {
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if (option_mask32 & OPT_a) {
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// just read stdin char by char
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unsigned char c;
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unsigned char c;
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// just read stdin char by char
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printf(press_keys, "on EOF (ctrl-D)");
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// read and show byte values
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while (1 == read(STDIN_FILENO, &c, 1)) {
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while (1 == read(STDIN_FILENO, &c, 1)) {
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printf("%3u 0%03o 0x%02x\r\n", c, c, c);
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printf("%3u 0%03o 0x%02x\r\n", c, c, c);
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if (04 /*CTRL-D*/ == c)
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if (04 /*CTRL-D*/ == c)
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break;
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break;
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}
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}
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} else {
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} else {
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// we assume a PC keyboard
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xioctl(STDIN_FILENO, KDGKBMODE, &kbmode);
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printf("Keyboard mode was %s.\r\n\n",
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kbmode == K_RAW ? "RAW" :
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(kbmode == K_XLATE ? "XLATE" :
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(kbmode == K_MEDIUMRAW ? "MEDIUMRAW" :
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(kbmode == K_UNICODE ? "UNICODE" : "UNKNOWN")))
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);
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// set raw keyboard mode
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// set raw keyboard mode
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xioctl(STDIN_FILENO, KDSKBMODE, (void *)(ptrdiff_t)((option_mask32 & OPT_k) ? K_MEDIUMRAW : K_RAW));
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xioctl(STDIN_FILENO, KDSKBMODE, (void *)(ptrdiff_t)((option_mask32 & OPT_k) ? K_MEDIUMRAW : K_RAW));
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// we should exit on any signal; signals should interrupt read
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// we should exit on any signal; signals should interrupt read
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bb_signals_recursive_norestart(BB_FATAL_SIGS, record_signo);
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bb_signals_recursive_norestart(BB_FATAL_SIGS, record_signo);
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// inform user that program ends after time of inactivity
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printf(press_keys, "10s after last keypress");
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// read and show scancodes
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// read and show scancodes
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while (!bb_got_signal) {
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while (!bb_got_signal) {
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char buf[18];
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char buf[18];
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@ -94,6 +102,7 @@ int showkey_main(int argc UNUSED_PARAM, char **argv)
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// setup 10s watchdog
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// setup 10s watchdog
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alarm(10);
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alarm(10);
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// read scancodes
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// read scancodes
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n = read(STDIN_FILENO, buf, sizeof(buf));
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n = read(STDIN_FILENO, buf, sizeof(buf));
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i = 0;
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i = 0;
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@ -121,11 +130,13 @@ int showkey_main(int argc UNUSED_PARAM, char **argv)
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}
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}
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puts("\r");
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puts("\r");
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}
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}
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// restore keyboard mode
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xioctl(STDIN_FILENO, KDSKBMODE, (void *)(ptrdiff_t)kbmode);
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}
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}
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// restore keyboard and console settings
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// restore console settings
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xset1(&tio0);
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xset1(&tio0);
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xioctl(STDIN_FILENO, KDSKBMODE, (void *)(ptrdiff_t)kbmode);
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return EXIT_SUCCESS;
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return EXIT_SUCCESS;
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}
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}
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