diff options
Diffstat (limited to 'contrib/syslinux/latest/com32/libutil/get_key.c')
| -rw-r--r-- | contrib/syslinux/latest/com32/libutil/get_key.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/contrib/syslinux/latest/com32/libutil/get_key.c b/contrib/syslinux/latest/com32/libutil/get_key.c deleted file mode 100644 index f277b43..0000000 --- a/contrib/syslinux/latest/com32/libutil/get_key.c +++ /dev/null @@ -1,172 +0,0 @@ -/* ----------------------------------------------------------------------- * - * - * Copyright 2004-2008 H. Peter Anvin - All Rights Reserved - * - * 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, 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 AUTHORS OR 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. - * - * ----------------------------------------------------------------------- */ - -/* - * get_key.c - * - * Get a single key, and try to pick apart function key codes. - * This doesn't decode anywhere close to all possiblities, but - * hopefully is enough to be useful. - */ - -#include <stdio.h> -#include <string.h> -#include <errno.h> -#include <unistd.h> -#include <time.h> -#include <sys/times.h> -#include <getkey.h> -#include <libutil.h> - -struct keycode { - int code; - int seqlen; - const unsigned char *seq; -}; - -#define MAXLEN 8 -#define CODE(x,y) { x, (sizeof y)-1, (const unsigned char *)(y) } - -static const struct keycode keycodes[] = { - /* First, the BIOS combined codes */ - CODE(KEY_F1, "\0\x3B"), - CODE(KEY_F2, "\0\x3C"), - CODE(KEY_F3, "\0\x3D"), - CODE(KEY_F4, "\0\x3E"), - CODE(KEY_F5, "\0\x3F"), - CODE(KEY_F6, "\0\x40"), - CODE(KEY_F7, "\0\x41"), - CODE(KEY_F8, "\0\x42"), - CODE(KEY_F9, "\0\x43"), - CODE(KEY_F10, "\0\x44"), - CODE(KEY_F11, "\0\x85"), - CODE(KEY_F12, "\0\x86"), - - CODE(KEY_UP, "\0\x48"), - CODE(KEY_DOWN, "\0\x50"), - CODE(KEY_LEFT, "\0\x4B"), - CODE(KEY_RIGHT, "\0\x4D"), - CODE(KEY_PGUP, "\0\x49"), - CODE(KEY_PGDN, "\0\x51"), - CODE(KEY_HOME, "\0\x47"), - CODE(KEY_END, "\0\x4F"), - CODE(KEY_INSERT, "\0\x52"), - CODE(KEY_DELETE, "\0\x53"), - - /* Now, VT/xterm/Linux codes */ - CODE(KEY_F1, "\033[[A"), - CODE(KEY_F1, "\033OP"), - CODE(KEY_F2, "\033[[B"), - CODE(KEY_F2, "\033OQ"), - CODE(KEY_F3, "\033[[C"), - CODE(KEY_F3, "\033OR"), - CODE(KEY_F4, "\033[[D"), - CODE(KEY_F4, "\033OS"), - CODE(KEY_F5, "\033[[E"), - CODE(KEY_F5, "\033[15~"), - CODE(KEY_F6, "\033[17~"), - CODE(KEY_F7, "\033[18~"), - CODE(KEY_F8, "\033[19~"), - CODE(KEY_F9, "\033[20~"), - CODE(KEY_F10, "\033[21~"), - CODE(KEY_F11, "\033[23~"), - CODE(KEY_F12, "\033[24~"), - - CODE(KEY_UP, "\033[A"), - CODE(KEY_DOWN, "\033[B"), - CODE(KEY_LEFT, "\033[D"), - CODE(KEY_RIGHT, "\033[C"), - CODE(KEY_PGUP, "\033[5~"), - CODE(KEY_PGUP, "\033[V"), - CODE(KEY_PGDN, "\033[6~"), - CODE(KEY_PGDN, "\033[U"), - CODE(KEY_HOME, "\033[1~"), - CODE(KEY_HOME, "\033[H"), - CODE(KEY_END, "\033[4~"), - CODE(KEY_END, "\033[F"), - CODE(KEY_END, "\033OF"), - CODE(KEY_INSERT, "\033[2~"), - CODE(KEY_INSERT, "\033[@"), - CODE(KEY_DELETE, "\033[3~"), -}; - -#define NCODES ((int)(sizeof keycodes/sizeof(struct keycode))) - -#define KEY_TIMEOUT ((CLK_TCK+9)/10) - -int get_key(FILE * f, clock_t timeout) -{ - unsigned char buffer[MAXLEN]; - int nc, i, rv; - const struct keycode *kc; - int another; - unsigned char ch; - clock_t start; - - /* We typically start in the middle of a clock tick */ - if (timeout) - timeout++; - - nc = 0; - start = times(NULL); - do { - rv = read(fileno(f), &ch, 1); - if (rv == 0 || (rv == -1 && errno == EAGAIN)) { - clock_t lateness = times(NULL) - start; - if (nc && lateness > 1 + KEY_TIMEOUT) { - if (nc == 1) - return buffer[0]; /* timeout in sequence */ - else if (timeout && lateness > timeout) - return KEY_NONE; - } else if (!nc && timeout && lateness > timeout) - return KEY_NONE; /* timeout before sequence */ - - do_idle(); - - another = 1; - continue; - } - - start = times(NULL); - - buffer[nc++] = ch; - - another = 0; - for (i = 0, kc = keycodes; i < NCODES; i++, kc++) { - if (nc == kc->seqlen && !memcmp(buffer, kc->seq, nc)) - return kc->code; - else if (nc < kc->seqlen && !memcmp(buffer, kc->seq, nc)) { - another = 1; - break; - } - } - } while (another); - - /* We got an unrecognized sequence; return the first character */ - /* We really should remember this and return subsequent characters later */ - return buffer[0]; -} |