Re: [PATCH v5 1/2] sha1_file.c: support reading from a loose object of unknown type

> +static int unpack_sha1_header_to_strbuf(git_zstream *stream, unsigned char *map,
> +					unsigned long mapsize,
> +					struct strbuf *header)
> +{
> +	unsigned char buffer[32], *cp;
> +	unsigned long bufsiz = sizeof(buffer);
> +	int status;
> +
> +	status = unpack_sha1_header(stream, map, mapsize, buffer, bufsiz);
> +
> +	if (status) {
> +		strbuf_add(header, buffer, stream->next_out - buffer);
> +		return status;
> +	}
> +
> +	do {
> +		status = git_inflate(stream, 0);
> +		strbuf_add(header, buffer, stream->next_out - buffer);
> +		for (cp = buffer; cp < stream->next_out; cp++)
> +			if (!*cp)
> +				/* Found the NUL at the end of the header */
> +				return 0;
> +		stream->next_out = buffer;
> +		stream->avail_out = bufsiz;
> +	} while (status == Z_OK);
> +	return -1;