353 lines
9.1 KiB
C
353 lines
9.1 KiB
C
/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2015 Giacomo Tesio <giacomo@tesio.it>
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*
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* Jehanne is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License.
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*
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* Jehanne is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <u.h>
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#include <lib9.h>
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#include "console.h"
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enum {
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Spec = 0xF800, /* Unicode private space */
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PF = Spec|0x20, /* num pad function key */
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View = Spec|0x00, /* view (shift window up) */
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Shift = Spec|0x60,
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Break = Spec|0x61,
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Ctrl = Spec|0x62,
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kbAlt = Spec|0x63,
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Caps = Spec|0x64,
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Num = Spec|0x65,
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Middle = Spec|0x66,
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Altgr = Spec|0x67,
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Kmouse = Spec|0x100,
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No = 0x00, /* peter */
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KF = 0xF000, /* function key (begin Unicode private space) */
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Home = KF|13,
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Up = KF|14,
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Pgup = KF|15,
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Print = KF|16,
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Left = KF|17,
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Right = KF|18,
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End = KF|24,
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Down = View,
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Pgdown = KF|19,
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Ins = KF|20,
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Del = 0x7F,
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Scroll = KF|21,
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};
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typedef struct Keybscan Keybscan;
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struct Keybscan {
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int esc1;
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int esc2;
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int alt;
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int altgr;
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int caps;
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int ctl;
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int num;
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int shift;
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int collecting;
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int nk;
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Rune kc[5];
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int buttons;
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};
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static Keybscan kbscan;
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static Rune kbtab[256] =
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{
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[0x00] No, '\x1b', '1', '2', '3', '4', '5', '6',
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[0x08] '7', '8', '9', '0', '-', '=', '\b', '\t',
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[0x10] 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i',
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[0x18] 'o', 'p', '[', ']', '\n', Ctrl, 'a', 's',
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[0x20] 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',
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[0x28] '\'', '`', Shift, '\\', 'z', 'x', 'c', 'v',
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[0x30] 'b', 'n', 'm', ',', '.', '/', Shift, '*',
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[0x38] kbAlt, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
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[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, Scroll, '7',
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[0x48] '8', '9', '-', '4', '5', '6', '+', '1',
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[0x50] '2', '3', '0', '.', No, No, No, KF|11,
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[0x58] KF|12, No, No, No, No, No, No, No,
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[0x60] No, No, No, No, No, No, No, No,
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[0x68] No, No, No, No, No, No, No, No,
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[0x70] No, No, No, No, No, No, No, No,
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[0x78] No, View, No, Up, No, No, No, No,
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};
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static Rune kbtabshift[256] =
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{
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[0x00] No, '\x1b', '!', '@', '#', '$', '%', '^',
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[0x08] '&', '*', '(', ')', '_', '+', '\b', '\t',
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[0x10] 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I',
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[0x18] 'O', 'P', '{', '}', '\n', Ctrl, 'A', 'S',
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[0x20] 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':',
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[0x28] '"', '~', Shift, '|', 'Z', 'X', 'C', 'V',
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[0x30] 'B', 'N', 'M', '<', '>', '?', Shift, '*',
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[0x38] kbAlt, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
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[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, Scroll, '7',
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[0x48] '8', '9', '-', '4', '5', '6', '+', '1',
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[0x50] '2', '3', '0', '.', No, No, No, KF|11,
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[0x58] KF|12, No, No, No, No, No, No, No,
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[0x60] No, No, No, No, No, No, No, No,
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[0x68] No, No, No, No, No, No, No, No,
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[0x70] No, No, No, No, No, No, No, No,
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[0x78] No, Up, No, Up, No, No, No, No,
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};
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static Rune kbtabesc1[256] =
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{
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[0x00] No, No, No, No, No, No, No, No,
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[0x08] No, No, No, No, No, No, No, No,
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[0x10] No, No, No, No, No, No, No, No,
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[0x18] No, No, No, No, '\n', Ctrl, No, No,
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[0x20] No, No, No, No, No, No, No, No,
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[0x28] No, No, Shift, No, No, No, No, No,
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[0x30] No, No, No, No, No, '/', No, Print,
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[0x38] Altgr, No, No, No, No, No, No, No,
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[0x40] No, No, No, No, No, No, Break, Home,
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[0x48] Up, Pgup, No, Left, No, Right, No, End,
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[0x50] Down, Pgdown, Ins, Del, No, No, No, No,
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[0x58] No, No, No, No, No, No, No, No,
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[0x60] No, No, No, No, No, No, No, No,
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[0x68] No, No, No, No, No, No, No, No,
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[0x70] No, No, No, No, No, No, No, No,
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[0x78] No, Up, No, No, No, No, No, No,
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};
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static Rune kbtabaltgr[256] =
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{
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[0x00] No, No, No, No, No, No, No, No,
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[0x08] No, No, No, No, No, No, No, No,
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[0x10] No, No, No, No, No, No, No, No,
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[0x18] No, No, No, No, '\n', Ctrl, No, No,
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[0x20] No, No, No, No, No, No, No, No,
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[0x28] No, No, Shift, No, No, No, No, No,
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[0x30] No, No, No, No, No, '/', No, Print,
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[0x38] Altgr, No, No, No, No, No, No, No,
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[0x40] No, No, No, No, No, No, Break, Home,
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[0x48] Up, Pgup, No, Left, No, Right, No, End,
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[0x50] Down, Pgdown, Ins, Del, No, No, No, No,
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[0x58] No, No, No, No, No, No, No, No,
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[0x60] No, No, No, No, No, No, No, No,
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[0x68] No, No, No, No, No, No, No, No,
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[0x70] No, No, No, No, No, No, No, No,
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[0x78] No, Up, No, No, No, No, No, No,
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};
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static Rune kbtabctrl[256] =
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{
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[0x00] No, '\x1b', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16',
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[0x08] '\x17', '\x18', '\x19', '\x10', '\n', '\x1d', '\b', '\t',
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[0x10] '\x11', '\x17', '\x05', '\x12', '\x14', '\x19', '\x15', '\t',
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[0x18] '\x0f', '\x10', '\x1b', '\x1d', '\n', Ctrl, '\x01', '\x13',
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[0x20] '\x04', '\x06', '\x07', '\b', '\n', '\x0b', '\x0c', '\x1b',
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[0x28] '\x07', No, Shift, '\x1c', '\x1a', '\x18', '\x03', '\x16',
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[0x30] '\x02', '\x0e', '\n', '\x0c', '\x0e', '\x0f', Shift, '\n',
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[0x38] kbAlt, No, Ctrl, '\x05', '\x06', '\x07', '\x04', '\x05',
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[0x40] '\x06', '\x07', '\x0c', '\n', '\x0e', '\x05', '\x06', '\x17',
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[0x48] '\x18', '\x19', '\n', '\x14', '\x15', '\x16', '\x0b', '\x11',
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[0x50] '\x12', '\x13', '\x10', '\x0e', No, No, No, '\x0f',
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[0x58] '\x0c', No, No, No, No, No, No, No,
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[0x60] No, No, No, No, No, No, No, No,
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[0x68] No, No, No, No, No, No, No, No,
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[0x70] No, No, No, No, No, No, No, No,
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[0x78] No, '\x07', No, '\b', No, No, No, No,
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};
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int
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keybscan(uint8_t code, uint8_t *out, int len)
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{
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Rune c;
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int keyup;
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int off;
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if(len < 16){
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debug("keybscan: out buffer too short to be safe\n");
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return -1;
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}
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//debug("kbscan: code 0x%x out %p len %d\n", code, out, len);
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c = code;
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off = 0;
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if(c == 0xe0){
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kbscan.esc1 = 1;
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return off;
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} else if(c == 0xe1){
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kbscan.esc2 = 2;
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return off;
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}
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keyup = c&0x80;
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c &= 0x7f;
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if(c > sizeof kbtab){
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c |= keyup;
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if(c != 0xFF) /* these come fairly often: CAPSLOCK U Y */
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debug("unknown key %ux\n", c);
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return off;
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}
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if(kbscan.esc1){
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c = kbtabesc1[c];
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kbscan.esc1 = 0;
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} else if(kbscan.esc2){
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kbscan.esc2--;
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return off;
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} else if(kbscan.shift)
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c = kbtabshift[c];
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else if(kbscan.altgr)
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c = kbtabaltgr[c];
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else if(kbscan.ctl)
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c = kbtabctrl[c];
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else
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c = kbtab[c];
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if(kbscan.caps && c<='z' && c>='a')
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c += 'A' - 'a';
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/*
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* keyup only important for shifts
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*/
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if(keyup){
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switch(c){
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case kbAlt:
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kbscan.alt = 0;
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break;
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case Shift:
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kbscan.shift = 0;
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/*mouseshifted = 0;*/
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break;
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case Ctrl:
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kbscan.ctl = 0;
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break;
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case Altgr:
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kbscan.altgr = 0;
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break;
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case Kmouse|1:
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case Kmouse|2:
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case Kmouse|3:
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case Kmouse|4:
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case Kmouse|5:
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kbscan.buttons &= ~(1<<(c-Kmouse-1));
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/*if(kbdmouse)kbdmouse(kbscan.buttons);*/
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break;
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}
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return off;
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}
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/*
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* normal character
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*/
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if(!(c & (Spec|KF))){
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off += runetochar((char*)out+off, &c);
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return off;
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} else {
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switch(c){
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case Caps:
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kbscan.caps ^= 1;
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return off;
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case Num:
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kbscan.num ^= 1;
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return off;
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case Shift:
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kbscan.shift = 1;
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/*mouseshifted = 1;*/
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return off;
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case kbAlt:
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kbscan.alt = 1;
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/*
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* VMware and Qemu use Ctl-Alt as the key combination
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* to make the VM give up keyboard and mouse focus.
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* This has the unfortunate side effect that when you
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* come back into focus, Plan 9 thinks you want to type
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* a compose sequence (you just typed alt).
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*
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* As a clumsy hack around this, we look for ctl-alt
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* and don't treat it as the start of a compose sequence.
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*/
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return off;
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case Ctrl:
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kbscan.ctl = 1;
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return off;
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case Altgr:
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kbscan.altgr = 1;
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return off;
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case Kmouse|1:
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case Kmouse|2:
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case Kmouse|3:
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case Kmouse|4:
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case Kmouse|5:
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kbscan.buttons |= 1<<(c-Kmouse-1);
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/*if(kbdmouse)kbdmouse(kbscan.buttons);*/
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return off;
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}
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}
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off += runetochar((char*)out+off, &c);
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return off;
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}
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/* read from src, write to consreads */
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void
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readkeyboard(int src, int consreads)
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{
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int32_t pid, i, r, w, scan, produced;
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static uint8_t ibuf[KeyboardBufferSize];
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static uint8_t obuf[ScreenBufferSize];
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pid = getpid();
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debug("readkeyboard %d: started\n", pid);
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do
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{
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produced = 0;
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w = 0;
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r = jehanne_read(src, ibuf, KeyboardBufferSize);
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debug("readkeyboard %d: jehanne_read(%d) returns %d\n", pid, src, r);
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for(i = 0; i < r; ++i){
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scan = keybscan(ibuf[i], obuf+produced, ScreenBufferSize-produced);
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if(scan == -1){
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debug("readkeyboard %d: keybscan(0x%x) returns -1, interrupt %s\n", pid, ibuf[i], argv0);
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if(postnote(PNGROUP, getpid(), "keybscan") == -1)
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debug("readkeyboard %d: postnote(PNGROUP, getpid(), 'keybscan') returns -1, %r\n", pid);
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exits("keybscan");
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} else {
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produced += scan;
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}
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}
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if(produced){
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w = jehanne_write(consreads, obuf, produced);
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debug("readkeyboard %d: jehanne_write(consreads) returns %d\n", pid, w);
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}
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}
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while(r > 0 && w == produced);
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debug("readkeyboard %d: shut down (r = %d, w = %d)\n", pid, r, w);
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sys_close(src);
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debug("readkeyboard %d: sys_close(%d)\n", pid, src);
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sys_close(consreads);
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debug("readkeyboard %d: sys_close(%d)\n", pid, consreads);
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if(r < 0)
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exits("read");
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if(w < 0)
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exits("write");
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if(w < produced)
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exits("i/o error");
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exits(nil);
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}
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