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/*
* Copyright (c) 2017, Curtis McEnroe <curtis@cmcenroe.me>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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 fileA = open(argv[1], O_RDONLY);
if (fileA < 0) err(EX_IOERR, "%s", argv[1]);
int fileB = open(argv[2], O_RDONLY);
if (fileB < 0) err(EX_IOERR, "%s", argv[2]);
int fileC = open(argv[3], O_WRONLY | O_CREAT, 0644);
if (fileC < 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);
mvhline(CELL_ROWS * 2 + 1, 0, 0, CELL_COLS);
mvvline(0, CELL_COLS, 0, CELL_ROWS * 2 + 1);
mvaddch(CELL_ROWS, CELL_COLS, ACS_RTEE);
mvaddch(CELL_ROWS * 2 + 1, CELL_COLS, ACS_LRCORNER);
struct Tile tileA, tileB;
for (;;) {
ssize_t lenA = read(fileA, &tileA, sizeof(tileA));
if (lenA < 0) err(EX_IOERR, "%s", argv[1]);
ssize_t lenB = read(fileB, &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");
const struct Tile *tileC = (tileA.access > tileB.access) ? &tileA : &tileB;
if (tileA.modify != tileB.modify) {
drawTile(0, &tileA);
drawTile(CELL_ROWS + 1, &tileB);
move(CELL_ROWS * 2 + 2, 0);
refresh();
int c;
do { c = getch(); } while (c != 'a' && c != 'b');
tileC = (c == 'a') ? &tileA : &tileB;
}
ssize_t lenC = writeAll(fileC, (char *)tileC, sizeof(*tileC));
if (lenC < 0) err(EX_IOERR, "%s", argv[3]);
}
endwin();
return EX_OK;
}
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