cfg_var.cpp

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#include "foobar2000.h"

cfg_var_reader * cfg_var_reader::g_list = NULL;
cfg_var_writer * cfg_var_writer::g_list = NULL;

void cfg_var_reader::config_read_file(stream_reader * p_stream,abort_callback & p_abort)
{
    pfc::map_t<GUID,cfg_var_reader*> vars;
    for(cfg_var_reader * walk = g_list; walk != NULL; walk = walk->m_next) {
        vars.set(walk->m_guid,walk);
    }
    for(;;) {
        
        GUID guid;
        t_uint32 size;

        if (p_stream->read(&guid,sizeof(guid),p_abort) != sizeof(guid)) break;
        guid = pfc::byteswap_if_be_t(guid);
        p_stream->read_lendian_t(size,p_abort);

        cfg_var_reader * var;
        if (vars.query(guid,var)) {
            stream_reader_limited_ref wrapper(p_stream,size);
            try {
                var->set_data_raw(&wrapper,size,p_abort);
            } catch(exception_io_data) {}
            wrapper.flush_remaining(p_abort);
        } else {
            p_stream->skip_object(size,p_abort);
        }
    }
}

void cfg_var_writer::config_write_file(stream_writer * p_stream,abort_callback & p_abort) {
    cfg_var_writer * ptr;
    pfc::array_t<t_uint8,pfc::alloc_fast_aggressive> temp;
    for(ptr = g_list; ptr; ptr = ptr->m_next) {
        temp.set_size(0);
        {
            stream_writer_buffer_append_ref_t<pfc::array_t<t_uint8,pfc::alloc_fast_aggressive> > stream(temp);
            ptr->get_data_raw(&stream,p_abort);
        }
        p_stream->write_lendian_t(ptr->m_guid,p_abort);
        p_stream->write_lendian_t(pfc::downcast_guarded<t_uint32>(temp.get_size()),p_abort);
        if (temp.get_size() > 0) {
            p_stream->write_object(temp.get_ptr(),temp.get_size(),p_abort);
        }
    }
}


void cfg_string::get_data_raw(stream_writer * p_stream,abort_callback & p_abort) {
    p_stream->write_object(get_ptr(),length(),p_abort);
}

void cfg_string::set_data_raw(stream_reader * p_stream,t_size p_sizehint,abort_callback & p_abort) {
    pfc::string8_fastalloc temp;
    p_stream->read_string_raw(temp,p_abort);
    set_string(temp);
}