ref: 3b0a35dd198d23c2d83a2426d61c7628ca5b82bf
parent: 4aab52143cce6e8105b4fd50311b21628c61cb3f
author: Sigrid Solveig Haflínudóttir <ftrvxmtrx@gmail.com>
date: Thu Nov 18 17:47:13 EST 2021
use unicode private use area to set all unmapped keys at once and map back
--- a/README.md
+++ b/README.md
@@ -2,27 +2,3 @@
Finds the correct `/dev/kbmap` entry for a non-working key on your
keyboard, in 9front.
-
-## Process
-
-1) after installing (`mk install`) run `aux/kbfind`.
-2) press the non-working key _once_
-3) press any other _working_ key _once_ (or Delete to exit)
-4) go to step 2
-
-If the key was not mapped before and is producing scancodes,
-eventually the program will print out the needed entry that needs to
-be put into `/dev/kbmap` for the key to work. Replace the last `0` of
-that entry to whichever Rune you want your key to produce, converted
-to a number, see `/sys/include/keyboard.h` for some of the existing
-"special" keys.
-
-## How does this work
-
-Unmapped entries in `/dev/kbmap` have the Rune (third number) set to
-0. `aux/kbfind` sets those entries to a custom Rune and awaits for
-key presses to be available on `/dev/kbd`. If the custom Rune was
-found the entries currently enabled are cut into half to see whether
-the key would still produce the rune. If not, the other half is
-enabled instead and the process is repeated, cutting the number of
-keys to test in half every time.
--- a/kbfind.c
+++ b/kbfind.c
@@ -11,78 +11,76 @@
static K k[1280];
static int nk, kbmap, kbd;
-static int k0, ke;
-static int ak0, ake;
-static int nohits, left;
enum {- Kunmapped = 0xf789,
+ Base = 0xf0000,
+ End = 0xffffd
};
-static void
-mapto(Rune r)
+static char *
+k2s(Rune r)
{- int i;
+ static char s[4];
- /* disable the range */
- for(i = k0; i <= ke; i++)
- fprint(kbmap, "%d\t%d\t%d\n", k[i].e, k[i].c, r);
-}
+ switch(r){+ case Kack: return "Kack";
+ case Kalt: return "Kalt";
+ case Kaltgr: return "Kaltgr";
+ case Kbreak: return "Kbreak";
+ case Kbs: return "Kbs";
+ case Kcaps: return "Kcaps";
+ case Kctl: return "Kctl";
+ case Kdel: return "Kdel";
+ case Kdown: return "Kdown";
+ case Kend: return "Kend";
+ case Kenq: return "Kenq";
+ case Keof: return "Keof";
+ case Kesc: return "Kesc";
+ case Ketb: return "Ketb";
+ case Ketx: return "Ketx";
+ case Khome: return "Khome";
+ case Kins: return "Kins";
+ case Kleft: return "Kleft";
+ case Kmiddle: return "Kmiddle";
+ case Kmod4: return "Kmod4";
+ case Knack: return "Knack";
+ case Knum: return "Knum";
+ case Kpgdown: return "Kpgdown";
+ case Kpgup: return "Kpgup";
+ case Kprint: return "Kprint";
+ case Kright: return "Kright";
+ case Kscroll: return "Kscroll";
+ case Kscrollonedown: return "Kscrollonedown";
+ case Kscrolloneup: return "Kscrolloneup";
+ case Kshift: return "Kshift";
+ case Ksoh: return "Ksoh";
+ case Kstx: return "Kstx";
+ case Kup: return "Kup";
+ default:
+ if(r >= (KF|1) && r <= (KF|12)){+ sprint(s, "F%d", r-KF);
+ return s;
+ }
+ }
-static void
-revert(void)
-{- mapto(0);
+ return nil;
}
static void
-hit(int unmapped)
+cleanup(void)
{- char kbup[32];
+ int i;
- /* disable mapping */
- mapto(0);
-
- if(unmapped){- nohits = 0;
- /* got a hit */
- if(k0 == ke){- /* only one left */
- print("%d\t%d\t0\n", k[k0].e, k[k0].c);- /* skip key up so there isn't garbage printed out */
- read(kbd, kbup, sizeof(kbup));
- exits(nil);
- }
- /* reduce */
- ake = ke;
- ke = k0 + (ke-k0)/2;
- ak0 = ke+1;
- }else if(++nohits > 1){- nohits = 0;
- if(k0 == ak0 && ke == ake){- /* give up */
- fprint(2, "key doesn't work\n");
- exits(nil);
- }
- /* try a different half */
- k0 = ak0;
- ke = ake;
- }
- if(left != ke-k0+1){- left = ke-k0+1;
- fprint(2, "%d possible left\n", left);
- }
-
- /* enable the new range */
- mapto(Kunmapped);
+ for(i = 0; i <= nk; i++)
+ fprint(kbmap, "%d\t%d\t%d\n", k[i].e, k[i].c, 0);
}
void
main(int argc, char **argv)
{+ char *s, *x, buf[128], buf2[128];
Biobuf *b;
- char *s, buf[128], buf2[128];
- int n;
+ int i, n;
Rune r;
USED(argc); USED(argv);
@@ -101,13 +99,14 @@
if(nk < 1)
sysfatal("no keys to map");Bterm(b);
- fprint(2, "there are %d unmapped keys\n", nk);
- ke = nk-1;
+ print("there are %d unmapped keys\n", nk);kbd = -1;
if((kbmap = open("/dev/kbmap", OWRITE)) < 0 || (kbd = open("/dev/kbd", OREAD)) < 0) sysfatal("%r");- mapto(Kunmapped);
+ atexit(cleanup);
+ for(i = 0; i <= nk; i++)
+ fprint(kbmap, "%d\t%d\t%d\n", k[i].e, k[i].c, Base+i);
buf2[0] = 0;
buf2[1] = 0;
@@ -130,13 +129,16 @@
while(*s){s += chartorune(&r, s);
if(utfrune(buf2+1, r) == nil){+ if((x = k2s(r)) != nil)
+ print("%s\n", x);+ else if(r >= Base && r <= End && (i = r-Base) < nk)
+ print("%d\t%d\t%d\n", k[i].e, k[i].c, r);+ else if(r != Runeerror)
+ print("%C\n", r);+ else
+ print("unknown key: rune 0x%x\n", r);if(r == Kdel)
goto end;
- if(r == Kshift || r == Kalt || r == Kctl){- fprint(2, "please don't press shift/alt/ctl\n");
- continue;
- }
- hit(r == Kunmapped);
}
}
break;