3 [_ð]Ðã@s<dZddlmZddlZddlZddlZGdd„deƒZdS)z)DNS nodes. A node is a set of rdatasets.é)ÚStringIONc@sŠeZdZdZdgZdd„Zdd„Zdd„Zd d „Zd d „Z d d„Z dd„Z e j jdfdd„Ze j jdfdd„Ze j jfdd„Zdd„ZdS)ÚNodezA Node is a set of rdatasets.Ú rdatasetscCs g|_dS)N)r)Úself©rú-/tmp/pip-build-yz_zf6az/dnspython/dns/node.pyÚ__init__!sz Node.__init__cKsPtƒ}x8|jD].}t|ƒdkr|j|j|f|Žƒ|jdƒqW|jƒdd…S)a&Convert a node to text format. Each rdataset at the node is printed. Any keyword arguments to this method are passed on to the rdataset's to_text() method. *name*, a ``dns.name.Name`` or ``text``, the owner name of the rdatasets. Returns a ``text``. rÚ Nééÿÿÿÿ)rrÚlenÚwriteÚto_textÚgetvalue)rÚnameÚkwÚsÚrdsrrrr%s   z Node.to_textcCsdtt|ƒƒdS)Nz )ÚstrÚid)rrrrÚ__repr__7sz Node.__repr__cCs@x|jD]}||jkrdSqWx|jD]}||jkr&dSq&WdS)NFT)r)rÚotherÚrdrrrÚ__eq__:s    z Node.__eq__cCs |j|ƒ S)N)r)rrrrrÚ__ne__Fsz Node.__ne__cCs t|jƒS)N)r r)rrrrÚ__len__Isz Node.__len__cCs t|jƒS)N)Úiterr)rrrrÚ__iter__Lsz Node.__iter__FcCsHx |jD]}|j|||ƒr|SqW|s*t‚tjj||ƒ}|jj|ƒ|S)aÝFind an rdataset matching the specified properties in the current node. *rdclass*, an ``int``, the class of the rdataset. *rdtype*, an ``int``, the type of the rdataset. *covers*, an ``int``, the covered type. Usually this value is dns.rdatatype.NONE, but if the rdtype is dns.rdatatype.SIG or dns.rdatatype.RRSIG, then the covers value will be the rdata type the SIG/RRSIG covers. The library treats the SIG and RRSIG types as if they were a family of types, e.g. RRSIG(A), RRSIG(NS), RRSIG(SOA). This makes RRSIGs much easier to work with than if RRSIGs covering different rdata types were aggregated into a single RRSIG rdataset. *create*, a ``bool``. If True, create the rdataset if it is not found. Raises ``KeyError`` if an rdataset of the desired type and class does not exist and *create* is not ``True``. Returns a ``dns.rdataset.Rdataset``. )rÚmatchÚKeyErrorÚdnsÚrdatasetÚRdatasetÚappend)rÚrdclassÚrdtypeÚcoversÚcreaterrrrÚ find_rdatasetOs  zNode.find_rdatasetc Cs2y|j||||ƒ}Wntk r,d}YnX|S)açGet an rdataset matching the specified properties in the current node. None is returned if an rdataset of the specified type and class does not exist and *create* is not ``True``. *rdclass*, an ``int``, the class of the rdataset. *rdtype*, an ``int``, the type of the rdataset. *covers*, an ``int``, the covered type. Usually this value is dns.rdatatype.NONE, but if the rdtype is dns.rdatatype.SIG or dns.rdatatype.RRSIG, then the covers value will be the rdata type the SIG/RRSIG covers. The library treats the SIG and RRSIG types as if they were a family of types, e.g. RRSIG(A), RRSIG(NS), RRSIG(SOA). This makes RRSIGs much easier to work with than if RRSIGs covering different rdata types were aggregated into a single RRSIG rdataset. *create*, a ``bool``. If True, create the rdataset if it is not found. Returns a ``dns.rdataset.Rdataset`` or ``None``. N)r)r )rr%r&r'r(rrrrÚ get_rdatasetrs  zNode.get_rdatasetcCs&|j|||ƒ}|dk r"|jj|ƒdS)aDDelete the rdataset matching the specified properties in the current node. If a matching rdataset does not exist, it is not an error. *rdclass*, an ``int``, the class of the rdataset. *rdtype*, an ``int``, the type of the rdataset. *covers*, an ``int``, the covered type. N)r*rÚremove)rr%r&r'rrrrÚdelete_rdataset’s zNode.delete_rdatasetcCs:t|tjjƒstdƒ‚|j|j|j|jƒ|j j |ƒdS)aÅReplace an rdataset. It is not an error if there is no rdataset matching *replacement*. Ownership of the *replacement* object is transferred to the node; in other words, this method does not store a copy of *replacement* at the node, it stores *replacement* itself. *replacement*, a ``dns.rdataset.Rdataset``. Raises ``ValueError`` if *replacement* is not a ``dns.rdataset.Rdataset``. zreplacement is not an rdatasetN) Ú isinstancer!r"r#Ú ValueErrorr,r%r&r'rr$)rÚ replacementrrrÚreplace_rdataset£s  zNode.replace_rdatasetN)Ú__name__Ú __module__Ú __qualname__Ú__doc__Ú __slots__rrrrrrrr!Z rdatatypeÚNONEr)r*r,r0rrrrrs  " r) r4ÚiorZ dns.rdatasetr!Z dns.rdatatypeZ dns.rendererÚobjectrrrrrÚs