C++ (Cpp) SRL_RDR_UPDATE_BODY_POS Examples

Example #1

File: srl_merger.c Project: EmuxEvans/Sereal

SRL_STATIC_INLINE void
srl_set_input_buffer(pTHX_ srl_merger_t *mrg, SV *src)
{
    STRLEN len;
    UV header_len;
    U8 encoding_flags;
    U8 protocol_version;
    srl_buffer_char *tmp;
    IV proto_version_and_encoding_flags_int;

    SRL_RDR_CLEAR(&mrg->ibuf);

    tmp = (srl_buffer_char*) SvPV(src, len);
    mrg->ibuf.start = mrg->ibuf.pos = tmp;
    mrg->ibuf.end = mrg->ibuf.start + len;

    proto_version_and_encoding_flags_int = srl_validate_header_version(aTHX_ (srl_reader_char_ptr) mrg->ibuf.start, len);

    if (proto_version_and_encoding_flags_int < 1) {
        if (proto_version_and_encoding_flags_int == 0)
            SRL_RDR_ERROR(mrg->pibuf, "Bad Sereal header: It seems your document was accidentally UTF-8 encoded");
        else
            SRL_RDR_ERROR(mrg->pibuf, "Bad Sereal header: Not a valid Sereal document.");
    }

    mrg->ibuf.pos += 5;
    encoding_flags = (U8) (proto_version_and_encoding_flags_int & SRL_PROTOCOL_ENCODING_MASK);
    protocol_version = (U8) (proto_version_and_encoding_flags_int & SRL_PROTOCOL_VERSION_MASK);

    if (expect_false(protocol_version > 3 || protocol_version < 1)) {
        SRL_RDR_ERRORf1(mrg->pibuf, "Unsupported Sereal protocol version %u", (unsigned int) protocol_version);
    }

    // skip header in any case
    header_len = srl_read_varint_uv_length(aTHX_ mrg->pibuf, " while reading header");
    mrg->ibuf.pos += header_len;

    if (encoding_flags == SRL_PROTOCOL_ENCODING_RAW) {
        /* no op */
    } else if (   encoding_flags == SRL_PROTOCOL_ENCODING_SNAPPY
               || encoding_flags == SRL_PROTOCOL_ENCODING_SNAPPY_INCREMENTAL)
    {
        srl_decompress_body_snappy(aTHX_ mrg->pibuf, encoding_flags, NULL);
    } else if (encoding_flags == SRL_PROTOCOL_ENCODING_ZLIB) {
        srl_decompress_body_zlib(aTHX_ mrg->pibuf, NULL);
    } else {
        SRL_RDR_ERROR(mrg->pibuf, "Sereal document encoded in an unknown format");
    }

    /* this functions *MUST* be called after srl_decompress_body* */
    SRL_RDR_UPDATE_BODY_POS(mrg->pibuf, protocol_version);
    DEBUG_ASSERT_RDR_SANE(mrg->pibuf);
}

Example #2

File: srl_iterator.c Project: w1nk/Sereal

void
srl_iterator_set(pTHX_ srl_iterator_t *iter, SV *src)
{
    SV *sv;
    STRLEN len;
    UV header_len;
    U8 encoding_flags;
    U8 protocol_version;
    srl_reader_char_ptr tmp;
    IV proto_version_and_encoding_flags_int;
    srl_iterator_stack_ptr stack_ptr = NULL;

    if (iter->document) {
        SvREFCNT_dec(iter->document);
        iter->document = NULL;
    }

    iter->document = src;
    SvREFCNT_inc(iter->document);

    tmp = (srl_reader_char_ptr) SvPV(src, len);
    iter->buf.start = iter->buf.pos = tmp;
    iter->buf.end = iter->buf.start + len;

    proto_version_and_encoding_flags_int = srl_validate_header_version(aTHX_ iter->buf.start, len);

    if (proto_version_and_encoding_flags_int < 1) {
        if (proto_version_and_encoding_flags_int == 0)
            SRL_RDR_ERROR(iter->pbuf, "Bad Sereal header: It seems your document was accidentally UTF-8 encoded");
        else
            SRL_RDR_ERROR(iter->pbuf, "Bad Sereal header: Not a valid Sereal document.");
    }

    iter->buf.pos += 5;
    encoding_flags = (U8) (proto_version_and_encoding_flags_int & SRL_PROTOCOL_ENCODING_MASK);
    protocol_version = (U8) (proto_version_and_encoding_flags_int & SRL_PROTOCOL_VERSION_MASK);

    if (expect_false(protocol_version > 3 || protocol_version < 1)) {
        SRL_RDR_ERRORf1(iter->pbuf, "Unsupported Sereal protocol version %u", (unsigned int) protocol_version);
    }

    // skip header in any case
    header_len = srl_read_varint_uv_length(aTHX_ iter->pbuf, " while reading header");
    iter->buf.pos += header_len;

    if (encoding_flags == SRL_PROTOCOL_ENCODING_RAW) {
        /* no op */
    } else if (   encoding_flags == SRL_PROTOCOL_ENCODING_SNAPPY
               || encoding_flags == SRL_PROTOCOL_ENCODING_SNAPPY_INCREMENTAL)
    {
        srl_decompress_body_snappy(aTHX_ iter->pbuf, encoding_flags, &sv);
        SvREFCNT_dec(iter->document);
        SvREFCNT_inc(sv);
        iter->document = sv;
    } else if (encoding_flags == SRL_PROTOCOL_ENCODING_ZLIB) {
        srl_decompress_body_zlib(aTHX_ iter->pbuf, &sv);
        SvREFCNT_dec(iter->document);
        SvREFCNT_inc(sv);
        iter->document = sv;
    } else {
        SRL_RDR_ERROR(iter->pbuf, "Sereal document encoded in an unknown format");
    }

    /* this function *MUST* be called after calling srl_decompress_body* */
    SRL_RDR_UPDATE_BODY_POS(iter->pbuf, protocol_version);
    DEBUG_ASSERT_RDR_SANE(iter->pbuf);

    srl_stack_push_and_set(iter, SRL_ITER_STACK_ROOT_TAG, 1, stack_ptr);
    srl_iterator_reset(aTHX_ iter);
}