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| 1 | #include <u.h> | ||
| 2 | #include <libc.h> | ||
| 3 | #include <bio.h> | ||
| 4 | #include <keyboard.h> | ||
| 5 | |||
| 6 | typedef struct { | ||
| 7 | int e; | ||
| 8 | int c; | ||
| 9 | int r; | ||
| 10 | }K; | ||
| 11 | |||
| 12 | static K k[1280]; | ||
| 13 | static int nk, kbmap, kbd; | ||
| 14 | static int k0, ke; | ||
| 15 | static int ak0, ake; | ||
| 16 | static int nohits, left; | ||
| 17 | |||
| 18 | enum { | ||
| 19 | Kunmapped = 0xf789, | ||
| 20 | }; | ||
| 21 | |||
| 22 | static void | ||
| 23 | mapto(Rune r) | ||
| 24 | { | ||
| 25 | int i; | ||
| 26 | |||
| 27 | /* disable the range */ | ||
| 28 | for(i = k0; i <= ke; i++) | ||
| 29 | fprint(kbmap, "%d\t%d\t%d\n", k[i].e, k[i].c, r); | ||
| 30 | } | ||
| 31 | |||
| 32 | static void | ||
| 33 | revert(void) | ||
| 34 | { | ||
| 35 | mapto(0); | ||
| 36 | } | ||
| 37 | |||
| 38 | static void | ||
| 39 | hit(int unmapped) | ||
| 40 | { | ||
| 41 | char kbup[32]; | ||
| 42 | |||
| 43 | /* disable mapping */ | ||
| 44 | mapto(0); | ||
| 45 | |||
| 46 | if(unmapped){ | ||
| 47 | nohits = 0; | ||
| 48 | /* got a hit */ | ||
| 49 | if(k0 == ke){ | ||
| 50 | /* only one left */ | ||
| 51 | print("%d\t%d\t0\n", k[k0].e, k[k0].c); | ||
| 52 | /* skip key up so there isn't garbage printed out */ | ||
| 53 | read(kbd, kbup, sizeof(kbup)); | ||
| 54 | exits(nil); | ||
| 55 | } | ||
| 56 | /* reduce */ | ||
| 57 | ake = ke; | ||
| 58 | ke = k0 + (ke-k0)/2; | ||
| 59 | ak0 = ke+1; | ||
| 60 | }else if(++nohits > 1){ | ||
| 61 | nohits = 0; | ||
| 62 | if(k0 == ak0 && ke == ake){ | ||
| 63 | /* give up */ | ||
| 64 | fprint(2, "key doesn't work\n"); | ||
| 65 | exits(nil); | ||
| 66 | } | ||
| 67 | /* try a different half */ | ||
| 68 | k0 = ak0; | ||
| 69 | ke = ake; | ||
| 70 | } | ||
| 71 | if(left != ke-k0+1){ | ||
| 72 | left = ke-k0+1; | ||
| 73 | fprint(2, "%d possible left\n", left); | ||
| 74 | } | ||
| 75 | |||
| 76 | /* enable the new range */ | ||
| 77 | mapto(Kunmapped); | ||
| 78 | } | ||
| 79 | |||
| 80 | void | ||
| 81 | main(int argc, char **argv) | ||
| 82 | { | ||
| 83 | Biobuf *b; | ||
| 84 | char *s, buf[128], buf2[128]; | ||
| 85 | int n; | ||
| 86 | Rune r; | ||
| 87 | |||
| 88 | USED(argc); USED(argv); | ||
| 89 | |||
| 90 | if((b = Bopen("/dev/kbmap", OREAD)) == nil) | ||
| 91 | sysfatal("%r"); | ||
| 92 | for(nk = 0; nk < nelem(k);){ | ||
| 93 | if((s = Brdline(b, '\n')) == nil) | ||
| 94 | break; | ||
| 95 | k[nk].e = strtol(s, &s, 10); | ||
| 96 | k[nk].c = strtol(s, &s, 10); | ||
| 97 | k[nk].r = strtol(s, &s, 10); | ||
| 98 | if(k[nk].r == 0) | ||
| 99 | nk++; | ||
| 100 | } | ||
| 101 | if(nk < 1) | ||
| 102 | sysfatal("no keys to map"); | ||
| 103 | Bterm(b); | ||
| 104 | fprint(2, "there are %d unmapped keys\n", nk); | ||
| 105 | ke = nk-1; | ||
| 106 | |||
| 107 | kbd = -1; | ||
| 108 | if((kbmap = open("/dev/kbmap", OWRITE)) < 0 || (kbd = open("/dev/kbd", OREAD)) < 0) | ||
| 109 | sysfatal("%r"); | ||
| 110 | mapto(Kunmapped); | ||
| 111 | |||
| 112 | buf2[0] = 0; | ||
| 113 | buf2[1] = 0; | ||
| 114 | buf[0] = 0; | ||
| 115 | for(;;){ | ||
| 116 | if(buf[0] != 0){ | ||
| 117 | n = strlen(buf)+1; | ||
| 118 | memmove(buf, buf+n, sizeof(buf)-n); | ||
| 119 | } | ||
| 120 | if(buf[0] == 0){ | ||
| 121 | n = read(kbd, buf, sizeof(buf)-1); | ||
| 122 | if(n <= 0) | ||
| 123 | break; | ||
| 124 | buf[n-1] = 0; | ||
| 125 | } | ||
| 126 | |||
| 127 | switch(buf[0]){ | ||
| 128 | case 'k': | ||
| 129 | s = buf+1; | ||
| 130 | while(*s){ | ||
| 131 | s += chartorune(&r, s); | ||
| 132 | if(utfrune(buf2+1, r) == nil){ | ||
| 133 | if(r == Kdel) | ||
| 134 | goto end; | ||
| 135 | if(r == Kshift || r == Kalt || r == Kctl){ | ||
| 136 | fprint(2, "please don't press shift/alt/ctl\n"); | ||
| 137 | continue; | ||
| 138 | } | ||
| 139 | hit(r == Kunmapped); | ||
| 140 | } | ||
| 141 | } | ||
| 142 | break; | ||
| 143 | |||
| 144 | case 'K': | ||
| 145 | s = buf2+1; | ||
| 146 | while(*s) | ||
| 147 | s += chartorune(&r, s); | ||
| 148 | break; | ||
| 149 | |||
| 150 | default: | ||
| 151 | continue; | ||
| 152 | } | ||
| 153 | |||
| 154 | strcpy(buf2, buf); | ||
| 155 | } | ||
| 156 | |||
| 157 | end: | ||
| 158 | exits(nil); | ||
| 159 | } | ||