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  1. /*
  2.  * Copyright (C) 2006 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <async.h>
  30. #include <ipc/fb.h>
  31. #include <ipc/ipc.h>
  32. #include <libc.h>
  33. #include <errno.h>
  34. #include <string.h>
  35. #include <libc.h>
  36. #include <stdio.h>
  37.  
  38. #include "sysio.h"
  39.  
  40. /* Allow only 1 connection */
  41. static int client_connected = 0;
  42.  
  43. static void sysput(char c)
  44. {
  45.     __SYSCALL3(SYS_IO, 1, (sysarg_t)&c, (sysarg_t) 1);
  46. }
  47.  
  48. static void sysputs(char *s)
  49. {
  50.     __SYSCALL3(SYS_IO, 1, (sysarg_t)s, strlen(s));
  51. }
  52.  
  53. /** Send clearscreen sequence to console */
  54. static void clrscr(void)
  55. {
  56.     sysputs("\033[2J");
  57. }
  58.  
  59. /** Send ansi sequence to console to change cursor position */
  60. static void curs_goto(unsigned int row, unsigned int col)
  61. {
  62.     char control[20];
  63.  
  64.     if (row > 200 || col > 200)
  65.         return;
  66.  
  67.     snprintf(control, 20, "\033[%d;%df",row+1, col+1);
  68.     sysputs(control);
  69. }
  70.  
  71. /** ANSI terminal emulation main thread */
  72. static void sysio_client_connection(ipc_callid_t iid, ipc_call_t *icall)
  73. {
  74.     int retval;
  75.     ipc_callid_t callid;
  76.     ipc_call_t call;
  77.     char c;
  78.     int lastcol=0;
  79.     int lastrow=0;
  80.     int newcol,newrow;
  81.  
  82.     if (client_connected) {
  83.         ipc_answer_fast(iid, ELIMIT, 0,0);
  84.         return;
  85.     }
  86.     client_connected = 1;
  87.     ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
  88.     while (1) {
  89.         callid = async_get_call(&call);
  90.         switch (IPC_GET_METHOD(call)) {
  91.         case IPC_M_PHONE_HUNGUP:
  92.             client_connected = 0;
  93.             ipc_answer_fast(callid,0,0,0);
  94.             return; /* Exit thread */
  95.         case FB_PUTCHAR:
  96.             c = IPC_GET_ARG1(call);
  97.             newrow = IPC_GET_ARG2(call);
  98.             newcol = IPC_GET_ARG3(call);
  99.             if (lastcol != newcol || lastrow!=newrow)
  100.                 curs_goto(newrow, newcol);
  101.             lastcol = newcol + 1;
  102.             lastrow = newrow;
  103.             sysput(c);
  104.             retval = 0;
  105.             break;
  106.         case FB_CURSOR_GOTO:
  107.             newrow = IPC_GET_ARG1(call);
  108.             newcol = IPC_GET_ARG2(call);
  109.             curs_goto(newrow, newcol);
  110.             break;
  111.         case FB_GET_CSIZE:
  112.             ipc_answer_fast(callid, 0, 25, 80);
  113.             continue;
  114.         case FB_CLEAR:
  115.             clrscr();
  116.             retval = 0;
  117.             break;
  118.         default:
  119.             retval = ENOENT;
  120.         }
  121.         ipc_answer_fast(callid,retval,0,0);
  122.     }
  123. }
  124.  
  125. /** ANSI terminal emulation initialization */
  126. void sysio_init(void)
  127. {
  128.     async_set_client_connection(sysio_client_connection);
  129.     clrscr();
  130.     curs_goto(0,0);
  131. }
  132.