#include <stdio.h>
#include <stdlib.h>
#include "talk.h"

char *readupto(FILE *f, char end){
	char c;
	char *out = malloc(128);
	int counter = 0;
	while ((c = fgetc(f)) != EOF){
		out[counter] = c;
		if (c == end) break;
		counter++;
		if (counter > 128) out = realloc(out, counter + 128);
	}
	if (c == EOF && end != EOF) return NULL;

	out[counter] = 0;
	out = realloc(out, counter);

	return out;
}

char *readnchars(FILE *f, int n){
	char c;
	char *out = malloc(128);
	int counter = 0;
	while ((c = fgetc(f)) != EOF && counter < n){
		out[counter] = c;
		counter++;
		if (counter > 128) out = realloc(out, counter + 128);
	}
	if (c == EOF) return NULL;

	out[counter] = 0;
	out = realloc(out, counter);

	return out;
}