* MS-DOS port of libee, using <conio.h>.

configure.ac

@@ -18,10 +18,17 @@ AC_ARG_ENABLE(slang,
   [  --enable-slang          slang graphics support (default enabled)])
 AC_ARG_ENABLE(ncurses,
   [  --enable-ncurses        ncurses graphics support (default disabled)])
+AC_ARG_ENABLE(conio,
+  [  --enable-conio          DOS conio.h graphics support (default disabled)])
 
 USE_SLANG=false
 USE_NCURSES=false
-if test "${enable_ncurses}" = "yes"; then
+USE_CONIO=false
+if test "${enable_conio}" = "yes"; then
+  AC_CHECK_HEADER(conio.h,:,AC_MSG_ERROR([cannot find conio.h header]))
+  AC_DEFINE(USE_CONIO, 1, Define if the backend driver is conio.h)
+  USE_CONIO=:
+elif test "${enable_ncurses}" = "yes"; then
   AC_CHECK_HEADER(ncurses.h,:,AC_MSG_ERROR([cannot find ncurses headers]))
   AC_CHECK_LIB(ncurses,initscr,:,AC_MSG_ERROR([cannot find ncurses library]))
   AC_DEFINE(USE_NCURSES, 1, Define if the backend driver is ncurses)

libee/conic.c

@@ -28,8 +28,13 @@
 #   include <curses.h>
 #endif
 
+#ifdef HAVE_INTTYPES_H
+#   include <inttypes.h>
+#else
+typedef unsigned char uint8_t;
+#endif
+
 #include <stdlib.h>
-#include <inttypes.h>
 
 #include "ee.h"
 

libee/ee.c

@@ -26,6 +26,10 @@
 #   include <slang.h>
 #elif USE_NCURSES
 #   include <curses.h>
+#elif USE_CONIO
+#   include <conio.h>
+#else
+#   error "no graphics library detected"
 #endif
 
 #include <stdlib.h>
@@ -37,6 +41,9 @@
 #include "ee.h"
 
 static int _ee_delay;
+#ifdef USE_CONIO
+static struct text_info ti;
+#endif
 
 int ee_init(void)
 {
@@ -97,8 +104,12 @@ int ee_init(void)
     init_pair(EE_CYAN, COLOR_CYAN, COLOR_BLACK);
     init_pair(EE_MAGENTA, COLOR_MAGENTA, COLOR_BLACK);
 
-#else
-    /* Dummy driver */
+#elif USE_CONIO
+    _wscroll = 0;
+    _setcursortype(_NOCURSOR);
+    clrscr();
+    gettextinfo(&ti);
+//window(2, 2, 20, 20);
 
 #endif
     _ee_delay = 0;
@@ -117,8 +128,8 @@ int ee_get_width(void)
     return SLtt_Screen_Cols;
 #elif USE_NCURSES
     return COLS;
-#else
-    return 80;
+#elif USE_CONIO
+    return ti.screenwidth;
 #endif
 }
 
@@ -129,10 +140,11 @@ int ee_get_height(void)
 #elif USE_NCURSES
     return LINES;
 #else
-    return 25;
+    return ti.screenheight;
 #endif
 }
 
+#ifndef USE_CONIO
 static int64_t local_time(void)
 {
     struct timeval tv;
@@ -144,9 +156,11 @@ static int64_t local_time(void)
     now += tv.tv_usec;
     return now;
 }
+#endif
 
 void ee_refresh(void)
 {
+#ifndef USE_CONIO
     static int64_t local_clock = 0;
     int64_t now;
 
@@ -160,15 +174,17 @@ void ee_refresh(void)
     {
         /* If we are late, we shouldn't display anything */
     }
+#endif
 
 #ifdef USE_SLANG
     SLsmg_refresh();
 #elif USE_NCURSES
     refresh();
-#else
-    /* Use dummy driver */
+#elif USE_CONIO
+    /* Do nothing? */
 #endif
 
+#ifndef USE_CONIO
     now = local_time();
 
     if(now < local_clock + _ee_delay - 10000)
@@ -177,6 +193,7 @@ void ee_refresh(void)
     }
 
     local_clock += _ee_delay;
+#endif
 }
 
 void ee_end(void)
@@ -188,8 +205,11 @@ void ee_end(void)
 #elif USE_NCURSES
     curs_set(1);
     endwin();
-#else
-    /* Use dummy driver */
+#elif USE_CONIO
+    _wscroll = 1;
+    ee_set_color(EE_WHITE);
+    ee_putstr(ee_get_width(), ee_get_height()-1, "\r\n");
+    _setcursortype(_NORMALCURSOR);
 #endif
 }
 

libee/graphics.c

@@ -26,6 +26,10 @@
 #   include <slang.h>
 #elif USE_NCURSES
 #   include <curses.h>
+#elif USE_CONIO
+#   include <conio.h>
+#else
+#   error "no graphics library detected"
 #endif
 
 #include <string.h>
@@ -34,6 +38,21 @@
 #include "ee.h"
 
 static int ee_color = 0;
+#ifdef USE_CONIO
+static enum COLORS dos_colors[] = {
+    0,
+    BLACK,
+    GREEN,
+    YELLOW,
+    WHITE,
+    RED,
+    DARKGRAY,
+    LIGHTGRAY,
+    BLUE,
+    CYAN,
+    MAGENTA
+};
+#endif
 
 void ee_set_color(int color)
 {
@@ -42,8 +61,9 @@ void ee_set_color(int color)
     SLsmg_set_color(color);
 #elif USE_NCURSES
     attrset(COLOR_PAIR(color));
-#else
-    /* Use dummy driver */
+#elif USE_CONIO
+    if(color >= 1 && color <= 10)
+        textcolor(dos_colors[color]);
 #endif
 }
 
@@ -60,8 +80,9 @@ void ee_putchar(int x, int y, char c)
 #elif USE_NCURSES
     move(y,x);
     addch(c);
-#else
-    /* Use dummy driver */
+#elif USE_CONIO
+    gotoxy(x+1,y+1);
+    putch(c);
 #endif
 }
 
@@ -73,15 +94,15 @@ void ee_putstr(int x, int y, char *s)
 #elif USE_NCURSES
     move(y,x);
     addstr(s);
-#else
-    /* Use dummy driver */
+#elif USE_CONIO
+    gotoxy(x+1,y+1);
+    cputs(s);
 #endif
 }
 
 void ee_clear(void)
 {
-#if defined(USE_SLANG) || defined(USE_NCURSES)
-    /* We could use SLsmg_cls(), but drawing empty lines is much faster */
+    /* We could use SLsmg_cls() etc., but drawing empty lines is much faster */
     int x = ee_get_width(), y = ee_get_height();
     char *empty_line = malloc((x + 1) * sizeof(char));
 
@@ -94,8 +115,5 @@ void ee_clear(void)
     }
 
     free(empty_line);
-#else
-    /* Use dummy driver */
-#endif
 }
 

libee/io.c

@@ -26,6 +26,10 @@
 #   include <slang.h>
 #elif USE_NCURSES
 #   include <curses.h>
+#elif USE_CONIO
+#   include <conio.h>
+#else
+#   error "no graphics library detected"
 #endif
 
 #include "ee.h"
@@ -44,8 +48,8 @@ char ee_get_key(void)
     {
         return key;
     }
-#else
-    return 0;
+#elif USE_CONIO
+    return _conio_kbhit() ? getch() : 0;
 
 #endif
 

libee/line.c

@@ -28,7 +28,12 @@
 #   include <curses.h>
 #endif
 
-#include <inttypes.h>
+#ifdef HAVE_INTTYPES_H
+#   include <inttypes.h>
+#else
+typedef unsigned char uint8_t;
+#endif
+
 #include <stdlib.h>
 
 #include "ee.h"