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

static void *
my_alloc(size_t min, size_t max, size_t *actual)
{
	(void)max;

	*actual = min;
	return malloc(min);
}

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

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

	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;


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

	ret = aplwc_new(&aplwc, fns);
	if(ret)
		return 1;

	i = j = 0;
	do{
		for(i = j; (input[i] != '\n') && (input[i] != 0); i++);

		input[i] = 0;
		line = aplwc_read(aplwc, &input[j]);
		if(line == NULL)
			return 1;

		value = aplwc_eval(line);
		if((value == NULL) && (aplwc_last_error(aplwc) != APLWC_OUT_OF_MEMORY))
			return 1;

		aplwc_free_value(value);
		aplwc_free_line(line);

		j = i+1;
	}while(j < input_size);

	aplwc_destroy(aplwc);
	free(input);

	return 0;
}