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/* Copyright (C) 2017 June McEnroe <june@causal.agency>
*
* 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/>.
*/
#define _XOPEN_SOURCE_EXTENDED
#include <curses.h>
#include <err.h>
#include <fcntl.h>
#include <locale.h>
#include <stdio.h>
#include <sysexits.h>
#include <wchar.h>
#include "torus.h"
static void curse(void) {
setlocale(LC_CTYPE, "");
initscr();
start_color();
assume_default_colors(0, 0);
if (COLORS >= 16) {
for (short pair = 1; pair < 0x80; ++pair) {
init_pair(pair, pair & 0x0F, (pair & 0xF0) >> 4);
}
} else {
for (short pair = 1; pair < 0100; ++pair) {
init_pair(pair, pair & 007, (pair & 070) >> 3);
}
}
color_set(COLOR_WHITE, NULL);
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);
color_set(0, NULL);
cbreak();
noecho();
keypad(stdscr, true);
set_escdelay(100);
}
static attr_t colorAttr(uint8_t color) {
if (COLORS >= 16) return A_NORMAL;
return (color & COLOR_BRIGHT) ? A_BOLD : A_NORMAL;
}
static short colorPair(uint8_t color) {
if (COLORS >= 16) return color;
return (color & 0x70) >> 1 | (color & 0x07);
}
static void drawTile(int offsetY, const struct Tile *tile) {
for (uint8_t cellY = 0; cellY < CELL_ROWS; ++cellY) {
for (uint8_t cellX = 0; cellX < CELL_COLS; ++cellX) {
uint8_t color = tile->colors[cellY][cellX];
uint8_t cell = tile->cells[cellY][cellX];
cchar_t cch;
wchar_t wch[] = { CP437[cell], L'\0' };
setcchar(&cch, wch, colorAttr(color), colorPair(color), NULL);
mvadd_wch(offsetY + cellY, cellX, &cch);
}
}
}
int main(int argc, char *argv[]) {
if (argc != 4) return EX_USAGE;
FILE *fileA = fopen(argv[1], "r");
if (!fileA) err(EX_NOINPUT, "%s", argv[1]);
FILE *fileB = fopen(argv[2], "r");
if (!fileB) err(EX_NOINPUT, "%s", argv[2]);
FILE *fileC = fopen(argv[3], "w");
if (!fileC) err(EX_CANTCREAT, "%s", argv[3]);
curse();
struct Tile tileA, tileB;
for (;;) {
size_t countA = fread(&tileA, sizeof(tileA), 1, fileA);
if (ferror(fileA)) err(EX_IOERR, "%s", argv[1]);
size_t countB = fread(&tileB, sizeof(tileB), 1, fileB);
if (ferror(fileB)) err(EX_IOERR, "%s", argv[2]);
if (!countA && !countB) break;
if (!countA || !countB) errx(EX_DATAERR, "different size inputs");
const struct Tile *tileC = (tileA.meta.accessTime > tileB.meta.accessTime)
? &tileA
: &tileB;
if (tileA.meta.modifyTime != tileB.meta.modifyTime) {
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;
}
fwrite(tileC, sizeof(*tileC), 1, fileC);
if (ferror(fileC)) err(EX_IOERR, "%s", argv[3]);
}
endwin();
return EX_OK;
}
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