/*
 * colours.c
 *
 * Display all combinations of background and foreground colours, excluding
 * the blinking ones. There are 8 background and 16 foreground colours,
 * making a total of 128. Eight of these are "invisible" (the foreground is
 * the same as the background), leaving 120 colour combinations. Some of these
 * are hard to see (particularly numbers 35 and 50), so there are fewer than
 * 118 "usable" colour combinations.
 *
 * Jason Hood, 25 August, 1997.
 * Public Domain.
 *
 * 980822: use a parameter to do the blinking colours (or bright background).
 *
 * 031014, v1.00:
 *   test for redirection.
 */


#include <stdio.h>
#include <conio.h>

#ifdef __DJGPP__
#include <unistd.h>
#else
#include <io.h>
#endif


void help( void )
{
  puts( "Colours by Jason Hood <jadoxa@yahoo.com.au>.\n"
	"Version 1.00 (14 October, 2003). Public Domain.\n"
	"http://misc.adoxa.cjb.net/\n"
	"\n"
	"Display the text-mode colours with their decimal value.\n"
	"Use any parameter to display the blinking/bright background colours."
      );
}


int main( int argc, char* argv[] )
{
  int x, y, a, b;

  if (!isatty( 1 ) || (argc > 1 && argv[1][0] == '/' && argv[1][1] == '?'))
  {
    help();
    return 0;
  }

  b = (argc > 1) << 7;

  cputs( "\r\n" );
  for (y = 0; y < 16; ++y)              // Foreground colours down the screen
  {
    for (x = 0; x < 8; ++x)		// Background colours across the screen
    {
      a = (x << 4) | y | b;		// Create the attribute byte
      textattr( a );
      cprintf( " %03d ", a );		// Use the colour number as a test
      normvideo();
      cputs( "    " );
    }
    cputs( "\r\n" );
  }
  return 0;
}