#include <stdio.h>

int cgatolinux( int col )
{
	switch ( col )
	{
	case 0:
		return 0;
	case 1:
		return 4;
	case 2:
		return 2;
	case 3:
		return 6;
	case 4:
		return 1;
	case 5:
		return 5;
	case 6:
		return 3;
	case 7:
		return 7;
	}
	return 0;
}

char cp437[256][8] =
{
	// note: treat 0x00 and 0xFF as spaces, at least for the sake of printing
	//  _0        _1        _2        _3        _4        _5        _6        _7        _8        _9        _A        _B        _C        _D        _E        _F
	" "     , "\u263A", "\u263B", "\u2665", "\u2666", "\u2663", "\u2660", "\u2022", "\u25CB", "\u25CB", "\u25D9", "\u2642", "\u2640", "\u266A", "\u266B", "\u263C", // 0_
	"\u25BA", "\u25C4", "\u2195", "\u203C", "\u00B6", "\u00A7", "\u25AC", "\u21A8", "\u2191", "\u2193", "\u2192", "\u2190", "\u221F", "\u2194", "\u25B2", "\u25BC", // 1_
	" "     , "!"     , "\""    , "#"     , "$"     , "%"     , "&"     , "'"     , "("     , ")"     , "*"     , "+"     , ","     , "-"     , "·"     , "/"     , // 2_
	"0"     , "1"     , "2"     , "3"     , "4"     , "5"     , "6"     , "7"     , "8"     , "9"     , ":"     , ";"     , "<"     , "="     , ">"     , "?"     , // 3_
	"@"     , "A"     , "B"     , "C"     , "D"     , "E"     , "F"     , "G"     , "H"     , "I"     , "J"     , "K"     , "L"     , "M"     , "N"     , "O"     , // 4_
	"P"     , "Q"     , "R"     , "S"     , "T"     , "U"     , "V"     , "W"     , "X"     , "Y"     , "Z"     , "["     , "\\"    , "]"     , "^"     , "_"     , // 5_
	"`"     , "a"     , "b"     , "c"     , "d"     , "e"     , "f"     , "g"     , "h"     , "i"     , "j"     , "k"     , "l"     , "m"     , "n"     , "o"     , // 6_
	"p"     , "q"     , "r"     , "s"     , "t"     , "u"     , "v"     , "w"     , "x"     , "y"     , "z"     , "{"     , "|"     , "}"     , "~"     , "\u2302", // 7_
	"\u00C7", "\u00FC", "\u00E9", "\u00E2", "\u00E4", "\u00E0", "\u00E5", "\u00E7", "\u00EA", "\u00EB", "\u00E8", "\u00EF", "\u00EE", "\u00EC", "\u00C4", "\u00C5", // 8_
	"\u00C9", "\u00E6", "\u00C6", "\u00F4", "\u00F6", "\u00F2", "\u00FB", "\u00F9", "\u00FF", "\u00D6", "\u00DC", "\u00A2", "\u00A3", "\u00A5", "\u20A7", "\u0192", // 9_
	"\u00E1", "\u00ED", "\u00F3", "\u00FA", "\u00F1", "\u00D1", "\u00AA", "\u00BA", "\u00BF", "\u2310", "\u00AC", "\u00BD", "\u00BC", "\u00A1", "\u00AB", "\u00BB", // A_
	"\u2591", "\u2592", "\u2593", "\u2502", "\u2524", "\u2561", "\u2562", "\u2556", "\u2555", "\u2563", "\u2551", "\u2557", "\u255D", "\u255C", "\u255B", "\u2510", // B_
	"\u2514", "\u2534", "\u252C", "\u251C", "\u2500", "\u253C", "\u255E", "\u255F", "\u255A", "\u2554", "\u2569", "\u2566", "\u2560", "\u2550", "\u256C", "\u2567", // C_
	"\u2568", "\u2564", "\u2565", "\u2559", "\u2558", "\u2552", "\u2553", "\u256B", "\u256A", "\u2518", "\u250C", "\u2588", "\u2584", "\u258C", "\u2590", "\u2580", // D_
	"\u03B1", "\u00DF", "\u0393", "\u03C0", "\u03A3", "\u03C3", "\u00B5", "\u03C4", "\u03A6", "\u0398", "\u03A9", "\u03B4", "\u221E", "\u03C6", "\u03B5", "\u2229", // E_
	"\u2261", "\u00B1", "\u2265", "\u2264", "\u2320", "\u2321", "\u00F7", "\u2248", "\u00B0", "\u2219", "\u00B7", "\u221A", "\u207F", "\u00B2", "\u25A0", " "     , // F_
};

int main( int argc, char **argv )
{
	if ( argc < 2 )
	{
		fprintf(stderr,"usage: endoomview <file>\n");
		return 1;
	}
	FILE *f = fopen(argv[1],"rb");
	fseek(f,0,SEEK_END);
	long sz = ftell(f);
	if ( sz != 4000 )
	{
		fprintf(stderr,"4000 bytes expected, got %ld.\n",sz);
		fclose(f);
		return 2;
	}
	fseek(f,0,SEEK_SET);
	for ( int i=0; i<2000; i++ )
	{
		int chr = fgetc(f);
		int col = fgetc(f);
		int fg = 30+cgatolinux(col&0x07);
		int bold = !!(col&0x08);
		int bg = 40+cgatolinux((col&0x70)>>4);
		int blink = !!(col&0x80);
		printf("\033[%d;%d;%d;%dm%s",bold?1:22,blink?5:25,fg,bg,cp437[chr]);
		if ( !((i+1)%80) ) printf("\033[0m\n");
	}
	fclose(f);
	return 0;
}