Function icvXMLStartWriteStruct

deps/opencv/modules/core/src/persistence.cpp:2389–2431

static void
icvXMLStartWriteStruct( CvFileStorage* fs, const char* key, int struct_flags,
                        const char* type_name CV_DEFAULT(0))
{
    CvXMLStackRecord parent;
    const char* attr[10];
    int idx = 0;

    struct_flags = (struct_flags & (CV_NODE_TYPE_MASK|CV_NODE_FLOW)) | CV_NODE_EMPTY;
    if( !CV_NODE_IS_COLLECTION(struct_flags))
        CV_Error( CV_StsBadArg,
        "Some collection type: CV_NODE_SEQ or CV_NODE_MAP must be specified" );

    if( type_name )
    {
        attr[idx++] = "type_id";
        attr[idx++] = type_name;
    }
    attr[idx++] = 0;

    icvXMLWriteTag( fs, key, CV_XML_OPENING_TAG, cvAttrList(attr,0) );

    parent.struct_flags = fs->struct_flags & ~CV_NODE_EMPTY;
    parent.struct_indent = fs->struct_indent;
    parent.struct_tag = fs->struct_tag;
    cvSaveMemStoragePos( fs->strstorage, &parent.pos );
    cvSeqPush( fs->write_stack, &parent );

    fs->struct_indent += CV_XML_INDENT;
    if( !CV_NODE_IS_FLOW(struct_flags) )
        icvXMLFlush( fs );

    fs->struct_flags = struct_flags;
    if( key )
    {
        fs->struct_tag = cvMemStorageAllocString( fs->strstorage, (char*)key, -1 );
    }
    else
    {
        fs->struct_tag.ptr = 0;
        fs->struct_tag.len = 0;
    }
}


static void