/* 
 * Copyright (C) 2026 Peter Mikkelsen <petermikkelsen10@gmail.com>
 *
 * This file is part of aplwc.
 *
 * Aplwc is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Aplwc 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with aplwc.  If not, see <https://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <aplwc.h>

static void *
my_alloc(size_t size, size_t *actual)
{
	if(actual)
		*actual = size;
	return malloc(size);
}

static void
my_dealloc(void *p)
{
	free(p);
}

int
main(int argc, char *argv[])
{
	struct aplwc_fns fns;
	char *input;
	struct aplwc *aplwc;
	AplwcLine line;
	enum aplwc_rc ret;
	FILE *f;
	long input_size;

	memset(&fns, 0, sizeof(fns));
	fns.alloc = my_alloc;
	fns.dealloc = my_dealloc;

	if(argc != 2)
		return 1;

	f = fopen(argv[1], "r");
	if(f == NULL)
		return 1;
	if(fseek(f, 0, SEEK_END))
		return 1;
	input_size = ftell(f);
	if(input_size < 0)
		return 1;
	rewind(f);

	input = malloc(input_size+1);
	if(input == NULL)
		return 1;
	if(fread(input, 1, input_size, f) < (size_t)input_size)
		return 1;
	input[input_size] = 0;
	
	aplwc = aplwc_new(fns, &ret);
	if(ret)
		return 1;

	aplwc_read(aplwc, input, &line);
	if((!aplwc_valid_line(&line)) && (aplwc_last_error(aplwc) != APLWC_OUT_OF_MEMORY))
		return 1;
	aplwc_free_line(&line);
	aplwc_destroy(aplwc);
	free(input);

	return 0;
}