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/*
* Copyright (c) 2017, Curtis McEnroe <curtis@cmcenroe.me>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <curses.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <sysexits.h>
#include <unistd.h>
#undef COLOR_BLACK
#undef COLOR_RED
#undef COLOR_GREEN
#undef COLOR_YELLOW
#undef COLOR_BLUE
#undef COLOR_MAGENTA
#undef COLOR_CYAN
#undef COLOR_WHITE
#include "torus.h"
static ssize_t writeAll(int fd, const char *buf, size_t len) {
ssize_t writeLen;
while (0 < (writeLen = write(fd, buf, len))) {
buf += writeLen;
len -= writeLen;
}
return writeLen;
}
static void drawTile(int offsetY, const struct Tile *tile) {
for (int y = 0; y < CELL_ROWS; ++y) {
for (int x = 0; x < CELL_COLS; ++x) {
uint8_t color = tile->colors[y][x];
char cell = tile->cells[y][x];
int attrs = COLOR_PAIR(color & ~COLOR_BRIGHT);
if (color & COLOR_BRIGHT) attrs |= A_BOLD;
mvaddch(offsetY + y, x, attrs | cell);
}
}
}
int main(int argc, char *argv[]) {
if (argc != 4) return EX_USAGE;
int a = open(argv[1], O_RDONLY);
if (a < 0) err(EX_IOERR, "%s", argv[1]);
int b = open(argv[2], O_RDONLY);
if (b < 0) err(EX_IOERR, "%s", argv[2]);
int c = open(argv[3], O_WRONLY | O_CREAT, 0644);
if (c < 0) err(EX_IOERR, "%s", argv[3]);
initscr();
cbreak();
noecho();
keypad(stdscr, true);
set_escdelay(100);
start_color();
for (int bg = COLOR_BLACK; bg < COLOR_BRIGHT; ++bg) {
for (int fg = COLOR_BLACK; fg < COLOR_BRIGHT; ++fg) {
init_pair(bg << 4 | fg, fg, bg);
}
}
mvhline(CELL_ROWS, 0, 0, CELL_COLS);
struct Tile tileA, tileB;
for (;;) {
ssize_t lenA = read(a, &tileA, sizeof(tileA));
if (lenA < 0) err(EX_IOERR, "%s", argv[1]);
ssize_t lenB = read(b, &tileB, sizeof(tileB));
if (lenB < 0) err(EX_IOERR, "%s", argv[2]);
if (!lenA && !lenB) break;
if (!lenA || !lenB) errx(EX_IOERR, "different size inputs");
if (tileA.modify == tileB.modify) {
ssize_t lenC = writeAll(c, (char *)&tileB, sizeof(tileB));
if (lenC < 0) err(EX_IOERR, "%s", argv[3]);
continue;
}
drawTile(0, &tileA);
drawTile(CELL_ROWS + 1, &tileB);
refresh();
const struct Tile *choice;
int ch;
retry:
ch = getch();
if (ch == 'a') {
choice = &tileA;
} else if (ch == 'b') {
choice = &tileB;
} else {
goto retry;
}
ssize_t lenC = writeAll(c, (char *)choice, sizeof(*choice));
if (lenC < 0) err(EX_IOERR, "%s", argv[3]);
}
endwin();
return EX_OK;
}
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