| 1 | /*
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| 2 | * Copyright (C) 2006 Ondrej Palkovsky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #include <async.h>
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| 30 | #include <ipc/fb.h>
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| 31 | #include <ipc/ipc.h>
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| 32 | #include <libc.h>
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| 33 | #include <errno.h>
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| 34 | #include <string.h>
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| 35 | #include <libc.h>
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| 36 | #include <stdio.h>
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| 37 |
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| 38 | #include "sysio.h"
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| 39 |
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| 40 | /* Allow only 1 connection */
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| 41 | static int client_connected = 0;
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| 42 |
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| 43 | static void sysput(char c)
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| 44 | {
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| 45 | __SYSCALL3(SYS_IO, 1, (sysarg_t)&c, (sysarg_t) 1);
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| 46 | }
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| 47 |
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| 48 | static void sysputs(char *s)
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| 49 | {
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| 50 | __SYSCALL3(SYS_IO, 1, (sysarg_t)s, strlen(s));
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| 51 | }
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| 52 |
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| 53 | /** Send clearscreen sequence to console */
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| 54 | static void clrscr(void)
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| 55 | {
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| 56 | sysputs("\033[2J");
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| 57 | }
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| 58 |
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| 59 | /** Send ansi sequence to console to change cursor position */
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| 60 | static void curs_goto(unsigned int row, unsigned int col)
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| 61 | {
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| 62 | char control[20];
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| 63 |
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| 64 | if (row > 200 || col > 200)
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| 65 | return;
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| 66 |
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| 67 | snprintf(control, 20, "\033[%d;%df",row+1, col+1);
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| 68 | sysputs(control);
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| 69 | }
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| 70 |
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| 71 | /** ANSI terminal emulation main thread */
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| 72 | static void sysio_client_connection(ipc_callid_t iid, ipc_call_t *icall)
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| 73 | {
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| 74 | int retval;
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| 75 | ipc_callid_t callid;
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| 76 | ipc_call_t call;
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| 77 | char c;
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| 78 | int lastcol=0;
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| 79 | int lastrow=0;
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| 80 | int newcol,newrow;
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| 81 |
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| 82 | if (client_connected) {
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| 83 | ipc_answer_fast(iid, ELIMIT, 0,0);
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| 84 | return;
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| 85 | }
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| 86 | client_connected = 1;
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| 87 | ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
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| 88 | while (1) {
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| 89 | callid = async_get_call(&call);
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| 90 | switch (IPC_GET_METHOD(call)) {
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| 91 | case IPC_M_PHONE_HUNGUP:
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| 92 | client_connected = 0;
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| 93 | ipc_answer_fast(callid,0,0,0);
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| 94 | return; /* Exit thread */
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| 95 | case FB_PUTCHAR:
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| 96 | c = IPC_GET_ARG1(call);
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| 97 | newrow = IPC_GET_ARG2(call);
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| 98 | newcol = IPC_GET_ARG3(call);
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| 99 | if (lastcol != newcol || lastrow!=newrow)
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| 100 | curs_goto(newrow, newcol);
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| 101 | lastcol = newcol + 1;
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| 102 | lastrow = newrow;
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| 103 | sysput(c);
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| 104 | retval = 0;
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| 105 | break;
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| 106 | case FB_CURSOR_GOTO:
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| 107 | newrow = IPC_GET_ARG1(call);
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| 108 | newcol = IPC_GET_ARG2(call);
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| 109 | curs_goto(newrow, newcol);
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| 110 | break;
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| 111 | case FB_GET_CSIZE:
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| 112 | ipc_answer_fast(callid, 0, 25, 80);
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| 113 | continue;
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| 114 | case FB_CLEAR:
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| 115 | clrscr();
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| 116 | retval = 0;
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| 117 | break;
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| 118 | default:
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| 119 | retval = ENOENT;
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| 120 | }
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| 121 | ipc_answer_fast(callid,retval,0,0);
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| 122 | }
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| 123 | }
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| 124 |
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| 125 | /** ANSI terminal emulation initialization */
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| 126 | void sysio_init(void)
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| 127 | {
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| 128 | async_set_client_connection(sysio_client_connection);
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| 129 | clrscr();
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| 130 | curs_goto(0,0);
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| 131 | }
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