WebSVN – HelenOS-historic – Diff – /uspace/trunk/fb/sysio.c

 /*
  * Copyright (C) 2006 Ondrej Palkovsky
  * All rights reserved.
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
+ *
  * - Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
  * - Redistributions in binary form must reproduce the above copyright
  *   notice, this list of conditions and the following disclaimer in the
  *   documentation and/or other materials provided with the distribution.
  * - The name of the author may not be used to endorse or promote products
  *   derived from this software without specific prior written permission.
+ *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 /** @defgroup sysio SysIO
  * @brief   HelenOS framebuffer emulation via kernel.
  * @ingroup fbs
  * @{
  */
 /** @file
  */
 #include <async.h>
 #include <ipc/fb.h>
 #include <ipc/ipc.h>
 #include <libc.h>
 #include <errno.h>
 #include <string.h>
 #include <libc.h>
 #include <stdio.h>
 #include "sysio.h"
 #define WIDTH 80
 #define HEIGHT 25
 /* Allow only 1 connection */
 static int client_connected = 0;
 static void sysput(char c)
+{
     __SYSCALL3(SYS_IO, 1, (sysarg_t)&c, (sysarg_t) 1);
+}
 static void sysputs(char *s)
+{
     while (*s) {
         sysput(*(s++));
+    }
 //  __SYSCALL3(SYS_IO, 1, (sysarg_t)s, strlen(s));
+}
 /** Send clearscreen sequence to console */
 static void clrscr(void)
+{
     sysputs("\033[2J");
+}
 /** Send ansi sequence to console to change cursor position */
 static void curs_goto(unsigned int row, unsigned int col)
+{
     char control[20];
     if (row > 200 || col > 200)
         return;
     snprintf(control, 20, "\033[%d;%df",row+1, col+1);
     sysputs(control);
+}
 static void set_style(int mode)
+{
     char control[20];
     snprintf(control, 20, "\033[%dm", mode);
     sysputs(control);
+}
 static void scroll(int i)
+{
     if (i > 0) {
         curs_goto(HEIGHT-1, 0);
         while (i--)
             sysputs("\033D");
     } else if (i < 0) {
         curs_goto(0,0);
         while (i++)
             sysputs("\033M");
+    }
+}
 /** ANSI terminal emulation main thread */
 static void sysio_client_connection(ipc_callid_t iid, ipc_call_t *icall)
+{
     int retval;
     ipc_callid_t callid;
     ipc_call_t call;
     char c;
     int lastcol=0;
     int lastrow=0;
     int newcol,newrow;
     int fgcolor,bgcolor;
     int i;
     if (client_connected) {
         ipc_answer_fast(iid, ELIMIT, 0,0);
         return;
+    }
     client_connected = 1;
     ipc_answer_fast(iid, 0, 0, 0); /* Accept connection */
     while (1) {
         callid = async_get_call(&call);
         switch (IPC_GET_METHOD(call)) {
-        case IPC_M_PHONE_HUNGUP:
+            case IPC_M_PHONE_HUNGUP:
-            client_connected = 0;
+                client_connected = 0;
-            ipc_answer_fast(callid,0,0,0);
+                ipc_answer_fast(callid, 0, 0, 0);
-            return; /* Exit thread */
+                return; /* Exit thread */
-        case FB_PUTCHAR:
+            case FB_PUTCHAR:
-            c = IPC_GET_ARG1(call);
+                c = IPC_GET_ARG1(call);
-            newrow = IPC_GET_ARG2(call);
+                newrow = IPC_GET_ARG2(call);
-            newcol = IPC_GET_ARG3(call);
+                newcol = IPC_GET_ARG3(call);
-            if (lastcol != newcol || lastrow!=newrow)
+                if ((lastcol != newcol) || (lastrow != newrow))
+                    curs_goto(newrow, newcol);
+                lastcol = newcol + 1;
+                lastrow = newrow;
+                sysput(c);
+                retval = 0;
+                break;
+            case FB_CURSOR_GOTO:
+                newrow = IPC_GET_ARG1(call);
+                newcol = IPC_GET_ARG2(call);
                 curs_goto(newrow, newcol);
-            lastcol = newcol + 1;
-            lastrow = newrow;
+                lastrow = newrow;
-            sysput(c);
-            retval = 0;
-            break;
-        case FB_CURSOR_GOTO:
-            newrow = IPC_GET_ARG1(call);
-            newcol = IPC_GET_ARG2(call);
-            curs_goto(newrow, newcol);
-            lastrow = newrow;
-            lastcol = newcol;
+                lastcol = newcol;
-            break;
-        case FB_GET_CSIZE:
-            ipc_answer_fast(callid, 0, HEIGHT, WIDTH);
-            continue;
-        case FB_CLEAR:
-            clrscr();
-            retval = 0;
-            break;
-        case FB_SET_STYLE:
-            fgcolor = IPC_GET_ARG1(call);
-            bgcolor = IPC_GET_ARG2(call);
-            if (fgcolor < bgcolor)
-                set_style(0);
-            else
-                set_style(7);
-            retval = 0;
+                retval = 0;
-            break;
-        case FB_SCROLL:
-            i = IPC_GET_ARG1(call);
-            if (i > HEIGHT || i < -HEIGHT) {
-                retval = EINVAL;
                 break;
+            case FB_GET_CSIZE:
+                ipc_answer_fast(callid, 0, HEIGHT, WIDTH);
+                continue;
+            case FB_CLEAR:
+                clrscr();
+                retval = 0;
+                break;
+            case FB_SET_STYLE:
+                fgcolor = IPC_GET_ARG1(call);
+                bgcolor = IPC_GET_ARG2(call);
+                if (fgcolor < bgcolor)
+                    set_style(0);
+                else
+                    set_style(7);
+                retval = 0;
+                break;
+            case FB_SCROLL:
+                i = IPC_GET_ARG1(call);
+                if ((i > HEIGHT) || (i < -HEIGHT)) {
+                    retval = EINVAL;
+                    break;
-            }
+                }
-            scroll(i);
+                scroll(i);
-            curs_goto(lastrow, lastcol);
+                curs_goto(lastrow, lastcol);
-            retval = 0;
+                retval = 0;
-            break;
+                break;
-        default:
+            default:
-            retval = ENOENT;
+                retval = ENOENT;
+        }
-        ipc_answer_fast(callid,retval,0,0);
+        ipc_answer_fast(callid, retval, 0, 0);
+    }
+}
 /** ANSI terminal emulation initialization */
 void sysio_init(void)
+{
     async_set_client_connection(sysio_client_connection);
     clrscr();
     curs_goto(0,0);
     /* Set scrolling region to 0-25 lines */
     sysputs("\033[0;25r");
+}
 /**
  * @}
  */

Subversion Repositories HelenOS-historic

(root)/uspace/trunk/fb/sysio.c – Rev 1649 → 1719