C++ (Cpp) sc_stream_seek Exemples

Exemple #1

Fichier : sc_link_helpers.c Projet : pivovarchyk/sc-machine

sc_bool sc_link_calculate_checksum(const sc_stream *stream, sc_check_sum *check_sum)
{
    sc_char buffer[1024];
    sc_uint32 data_read;
    const gchar *result = 0;
    GChecksum *checksum = g_checksum_new(SC_DEFAULT_CHECKSUM);

    g_assert(stream != 0);
    g_assert(check_sum != 0);
    g_checksum_reset(checksum);

    sc_stream_seek(stream, SC_STREAM_SEEK_SET, 0);

    while (sc_stream_eof(stream) == SC_FALSE)
    {
        if (sc_stream_read_data(stream, buffer, 1024, &data_read) == SC_RESULT_ERROR)
        {
            g_checksum_free(checksum);
            return SC_FALSE;
        }

        g_checksum_update(checksum, (guchar*)buffer, data_read);
    }

    // store results
    check_sum->len = g_checksum_type_get_length(SC_DEFAULT_CHECKSUM);
    result = g_checksum_get_string(checksum);
    memcpy(&(check_sum->data[0]), result, check_sum->len);

    g_checksum_free(checksum);

    sc_stream_seek(stream, SC_STREAM_SEEK_SET, 0);

    return SC_TRUE;
}

Exemple #2

Fichier : sc_fs_storage.c Projet : msifd/sc-machine

sc_result sc_fs_storage_write_content(sc_addr addr, const sc_check_sum *check_sum, const sc_stream *stream)
{
    // write content into file
    sc_char buffer[BuffSize];
    sc_uint32 data_read, data_write;
    sc_stream *out_stream = 0;

    if (sc_fm_stream_new(fm_engine, check_sum, SC_STREAM_FLAG_WRITE, &out_stream) == SC_RESULT_OK)
    {
        g_assert(out_stream != null_ptr);
        // reset input stream positon to begin
        sc_stream_seek(stream, SC_STREAM_SEEK_SET, 0);

        while (sc_stream_eof(stream) == SC_FALSE)
        {
            if (sc_stream_read_data(stream, buffer, BuffSize, &data_read) == SC_RESULT_ERROR)
            {
                sc_stream_free(out_stream);
                return SC_RESULT_ERROR;
            }

            if (sc_stream_write_data(out_stream, buffer, data_read, &data_write) == SC_RESULT_ERROR)
            {
                sc_stream_free(out_stream);
                return SC_RESULT_ERROR;
            }

            if (data_read != data_write)
            {
                sc_stream_free(out_stream);
                return SC_RESULT_ERROR;
            }
        }
        sc_stream_free(out_stream);

        // reset input stream positon to begin
        sc_stream_seek(stream, SC_STREAM_SEEK_SET, 0);

        return sc_fs_storage_add_content_addr(addr, check_sum);
    }

    return SC_RESULT_ERROR_IO;
}