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

#include "register.h"
#include "buffer.h"
#include "text.h"
#include "util.h"

void register_release(Register *reg) {
	buffer_release(&reg->buf);
}

const char *register_get(Register *reg, size_t *len) {
	*len = reg->buf.len;
	return reg->buf.data;
}

bool register_put(Register *reg, Text *txt, Filerange *range) {
	size_t len = text_range_size(range);
	if (!buffer_grow(&reg->buf, len))
		return false;
	reg->buf.len = text_bytes_get(txt, range->start, len, reg->buf.data);
	return true;
}

bool register_append(Register *reg, Text *txt, Filerange *range) {
	size_t len = text_range_size(range);
	if (!buffer_grow(&reg->buf, reg->buf.len + len))
		return false;
	reg->buf.len += text_bytes_get(txt, range->start, len, reg->buf.data + reg->buf.len);
	return true;
}