Function hashwrite

csum-file.c:113–147

}

void hashwrite(struct hashfile *f, const void *buf, uint32_t count)
{
	while (count) {
		unsigned left = f->buffer_len - f->offset;
		unsigned nr = count > left ? left : count;

		if (f->do_crc)
			f->crc32 = crc32(f->crc32, buf, nr);

		if (nr == f->buffer_len) {
			/*
			 * Flush a full batch worth of data directly
			 * from the input, skipping the memcpy() to
			 * the hashfile's buffer. In this block,
			 * f->offset is necessarily zero.
			 */
			if (!f->skip_hash)
				git_hash_update(&f->ctx, buf, nr);
			flush(f, buf, nr);
		} else {
			/*
			 * Copy to the hashfile's buffer, flushing only
			 * if it became full.
			 */
			memcpy(f->buffer + f->offset, buf, nr);
			f->offset += nr;
			left -= nr;
			if (!left)
				hashflush(f);
		}

		count -= nr;
		buf = (char *) buf + nr;
	}
}

struct hashfile *hashfd_check(const struct git_hash_algo *algop,
			      const char *name)