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	slightly improve ascii output for colored squares and highlighted squares - che…
	git clone git://git.codemadness.org/chess-puzzles
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	---
	commit b55e73ad95fbbe333cdac344ca25a84dc61151b0
	parent 64c4e3aaecf348c2cb7c61f5569cae1a820d20db
	Author: Hiltjo Posthuma <[email protected]>
	Date: Wed, 20 Dec 2023 21:07:30 +0100

	slightly improve ascii output for colored squares and highlighted squares

	Diffstat:
	M fen_to_svg.c \| 29 +++++++++++++++++++++--------

	1 file changed, 21 insertions(+), 8 deletions(-)
	---
	diff --git a/fen_to_svg.c b/fen_to_svg.c
	@@ -5,6 +5,7 @@
	#include <stdlib.h>
	#include <string.h>

	+/* macro for truecolor RGB output to tty */
	#define SETFGCOLOR(r,g,b) printf("\x1b[38;2;%d;%d;%dm", r, g, b)
	#define SETBGCOLOR(r,g,b) printf("\x1b[48;2;%d;%d;%dm", r, g, b)

	@@ -352,12 +353,13 @@ fen_showboard(void)
	}

	/* show board */
	-/* TODO: show fancier, unicode and background square color */
	-/* TODO: use the output format similar to stockfish "d" command */
	void
	ascii_showboard(void)
	{
	- int x, y, piece;
	+ int hi[3] = { '>', ' ', '<' };
	+ int dark[3] = { '.', '.', '.' };
	+ int light[3] = { ' ', ' ', ' ' };
	+ int *color, x, y, piece;

	printf("Board FEN:\n");
	showboardfen();
	@@ -366,15 +368,28 @@ ascii_showboard(void)
	for (y = 0; y < 8; y++) {
	fputs("+---+---+---+---+---+---+---+---+\n", stdout);
	for (x = 0; x < 8; x++) {
	+ if (x % 2 == 0) {
	+ if (y % 2 == 0)
	+ color = highlight[y][x] ? hi : light;
	+ else
	+ color = highlight[y][x] ? hi : dark;
	+ } else {
	+ if (y % 2 == 0)
	+ color = highlight[y][x] ? hi : dark;
	+ else
	+ color = highlight[y][x] ? hi : light;
	+ }
	+
	if (x == 0)
	putchar('\|');
	- fputs(" ", stdout);
	+ putchar(color[0]);
	piece = getpiece(x, y);
	if (piece)
	ascii_showpiece(piece);
	else
	- fputs(" ", stdout);
	- fputs(" \|", stdout);
	+ putchar(color[1]);
	+ putchar(color[2]);
	+ putchar('\|');
	}
	if (showcoords) {
	putchar(' ');
	@@ -496,8 +511,6 @@ main(int argc, char *argv[])
	if (!*s)
	break;

	- /* TODO: parse which side to move, en-passant, etc */
	-
	/* next field, fields are: piece placement data, active color,
	Castling availability, En passant target square,
	Halfmove clock, Fullmove number */