Represents a name component. More...

#include <ndn-cxx/name-component.hpp>

Inheritance diagram for ndn::name::Component:

Collaboration diagram for ndn::name::Component:

Classes
class	Error

Public Types
using	element_const_iterator = element_container::const_iterator

using	element_container = std::vector< Block >

using	element_iterator = element_container::iterator

Public Member Functions
	Component (uint32_t type=tlv::GenericNameComponent)
	Construct a NameComponent of TLV-TYPE `type`, using empty TLV-VALUE. More...

	Component (const Block &wire)
	Construct a NameComponent from `block`. More...

	Component (uint32_t type, ConstBufferPtr buffer)
	Construct a NameComponent of TLV-TYPE `type`, using TLV-VALUE from `buffer`. More...

	Component (ConstBufferPtr buffer)
	Construct a GenericNameComponent, using TLV-VALUE from `buffer`. More...

	Component (uint32_t type, const Buffer &buffer)
	Construct a NameComponent of TLV-TYPE `type`, copying TLV-VALUE from `buffer`. More...

	Component (const Buffer &buffer)
	Construct a GenericNameComponent, copying TLV-VALUE from `buffer`. More...

	Component (uint32_t type, const uint8_t *value, size_t count)
	Construct a NameComponent of TLV-TYPE `type`, copying `count` bytes at `value` as TLV-VALUE. More...

	Component (const uint8_t *value, size_t count)
	Construct a GenericNameComponent, copying `count` bytes at `value` as TLV-VALUE. More...

template<class Iterator >
	Component (uint32_t type, Iterator first, Iterator last)
	Construct a NameComponent of TLV-TYPE `type`, copying TLV-VALUE from a range. More...

template<class Iterator >
	Component (Iterator first, Iterator last)
	Construct a GenericNameComponent, copying TLV-VALUE from a range. More...

	Component (const char *str)
	Construct a GenericNameComponent, copying TLV-VALUE from a null-terminated string. More...

	Component (const std::string &str)
	Construct a GenericNameComponent, copying TLV-VALUE from a string. More...

Buffer::const_iterator	begin () const
	Get begin iterator of encoded wire. More...

Block	blockFromValue () const

int	compare (const Component &other) const
	Compare this to the other Component using NDN canonical ordering. More...

const element_container &	elements () const
	Get container of sub-elements. More...

element_const_iterator	elements_begin () const
	Equivalent to elements().begin() More...

element_const_iterator	elements_end () const
	Equivalent to elements().end() More...

size_t	elements_size () const
	Equivalent to elements().size() More...

bool	empty () const

void	encode ()
	Encode sub-elements into TLV-VALUE. More...

Buffer::const_iterator	end () const
	Get end iterator of encoded wire. More...

bool	equals (const Component &other) const
	Check if this is the same component as other. More...

element_iterator	erase (element_const_iterator position)
	Erase a sub-element. More...

element_iterator	erase (element_const_iterator first, element_const_iterator last)
	Erase a range of sub-elements. More...

element_const_iterator	find (uint32_t type) const
	Find the first sub-element of the specified TLV-TYPE. More...

const Block &	get (uint32_t type) const
	Return the first sub-element of the specified TLV-TYPE. More...

ConstBufferPtr	getBuffer () const
	Get underlying buffer. More...

Component	getSuccessor () const
	Get the successor of this name component. More...

bool	hasValue () const noexcept
	Check if the Block has a non-empty TLV-VALUE. More...

bool	hasWire () const noexcept
	Check if the Block contains a fully encoded wire representation. More...

element_iterator	insert (element_const_iterator pos, const Block &element)
	Insert a sub-element. More...

bool	isByteOffset () const
	Check if the component is a byte offset per NDN naming conventions. More...

bool	isGeneric () const
	Check if the component is GenericComponent. More...

bool	isImplicitSha256Digest () const
	Check if the component is ImplicitSha256DigestComponent. More...

bool	isNumber () const
	Check if the component is a nonNegativeInteger. More...

bool	isNumberWithMarker (uint8_t marker) const
	Check if the component is a NameComponentWithMarker per NDN naming conventions rev1. More...

bool	isParametersSha256Digest () const
	Check if the component is ParametersSha256DigestComponent. More...

bool	isSegment () const
	Check if the component is a segment number per NDN naming conventions. More...

bool	isSegmentOffset () const

bool	isSequenceNumber () const
	Check if the component is a sequence number per NDN naming conventions. More...

bool	isTimestamp () const
	Check if the component is a timestamp per NDN naming conventions. More...

bool	isValid () const noexcept
	Check if the Block is valid. More...

bool	isVersion () const
	Check if the component is a version per NDN naming conventions. More...

	operator boost::asio::const_buffer () const
	Implicit conversion to `boost::asio::const_buffer` More...

bool	operator!= (const Component &other) const
	Check if this is not the same component as other. More...

bool	operator< (const Component &other) const
	Check if the *this is less than the other in NDN canonical ordering. More...

bool	operator<= (const Component &other) const
	Check if the *this is less than or equal to the other in NDN canonical ordering. More...

bool	operator== (const Component &other) const
	Check if this is the same component as other. More...

bool	operator> (const Component &other) const
	Check if the *this is greater than the other in NDN canonical ordering. More...

bool	operator>= (const Component &other) const
	Check if the *this is greater or equal than the other in NDN canonical ordering. More...

void	parse () const
	Parse TLV-VALUE into sub-elements. More...

void	push_back (const Block &element)
	Append a sub-element. More...

void	remove (uint32_t type)
	Remove all sub-elements of the specified TLV-TYPE. More...

void	reset () noexcept
	Reset the Block to a default-constructed state. More...

void	resetWire () noexcept
	Reset wire buffer but keep TLV-TYPE and sub-elements (if any) More...

size_t	size () const
	Return the size of the encoded wire, i.e. More...

uint64_t	toByteOffset () const
	Interpret as byte offset component using NDN naming conventions. More...

uint64_t	toNumber () const
	Interpret this name component as nonNegativeInteger. More...

uint64_t	toNumberWithMarker (uint8_t marker) const
	Interpret this name component as NameComponentWithMarker. More...

uint64_t	toSegment () const
	Interpret as segment number component using NDN naming conventions. More...

uint64_t	toSegmentOffset () const

uint64_t	toSequenceNumber () const
	Interpret as sequence number component using NDN naming conventions. More...

time::system_clock::TimePoint	toTimestamp () const
	Interpret as timestamp component using NDN naming conventions. More...

void	toUri (std::ostream &os) const
	Write *this to the output stream, escaping characters according to the NDN URI Scheme. More...

std::string	toUri () const
	Convert *this by escaping characters according to the NDN URI Scheme. More...

uint64_t	toVersion () const
	Interpret as version component using NDN naming conventions. More...

uint32_t	type () const
	Return the TLV-TYPE of the Block. More...

const uint8_t *	value () const noexcept
	Return a raw pointer to the beginning of TLV-VALUE. More...

Buffer::const_iterator	value_begin () const
	Get begin iterator of TLV-VALUE. More...

Buffer::const_iterator	value_end () const
	Get end iterator of TLV-VALUE. More...

size_t	value_size () const noexcept
	Return the size of TLV-VALUE, aka TLV-LENGTH. More...

const uint8_t *	wire () const
	Return a raw pointer to the beginning of the encoded wire. More...

void	wireDecode (const Block &wire)
	Decode from the wire format. More...

template<encoding::Tag TAG>
size_t	wireEncode (EncodingImpl< TAG > &encoder) const
	Fast encoding or block size estimation. More...

const Block &	wireEncode () const
	Encode to a wire format. More...

Static Public Member Functions
static std::tuple< bool, Block >	fromBuffer (ConstBufferPtr buffer, size_t offset)
	Try to parse Block from a wire buffer. More...

static std::tuple< bool, Block >	fromBuffer (const uint8_t *buf, size_t bufSize)
	Try to parse Block from a raw buffer. More...

static Component	fromByteOffset (uint64_t offset)
	Create byte offset component using NDN naming conventions. More...

static Component	fromEscapedString (const char *input, size_t beginOffset, size_t endOffset)
	Decode NameComponent from a URI component. More...

static Component	fromEscapedString (const char *input)
	Decode NameComponent from a URI component. More...

static Component	fromEscapedString (const std::string &input)
	Decode NameComponent from a URI component. More...

static Component	fromImplicitSha256Digest (ConstBufferPtr digest)
	Create ImplicitSha256DigestComponent component. More...

static Component	fromImplicitSha256Digest (const uint8_t *digest, size_t digestSize)
	Create ImplicitSha256DigestComponent component. More...

static Component	fromNumber (uint64_t number, uint32_t type=tlv::GenericNameComponent)
	Create a component encoded as nonNegativeInteger. More...

static Component	fromNumberWithMarker (uint8_t marker, uint64_t number)
	Create a component encoded as NameComponentWithMarker. More...

static Component	fromParametersSha256Digest (ConstBufferPtr digest)
	Create ParametersSha256DigestComponent component. More...

static Component	fromParametersSha256Digest (const uint8_t *digest, size_t digestSize)
	Create ParametersSha256DigestComponent component. More...

static Component	fromSegment (uint64_t segmentNo)
	Create segment number component using NDN naming conventions. More...

static Component	fromSegmentOffset (uint64_t offset)

static Component	fromSequenceNumber (uint64_t seqNo)
	Create sequence number component using NDN naming conventions. More...

static Block	fromStream (std::istream &is)
	Parse Block from an input stream. More...

static Component	fromTimestamp (const time::system_clock::TimePoint &timePoint)
	Create sequence number component using NDN naming conventions. More...

static Component	fromVersion (uint64_t version)
	Create version component using NDN naming conventions. More...

Protected Attributes
Buffer::const_iterator	m_begin

shared_ptr< const Buffer >	m_buffer
	Underlying buffer storing TLV-VALUE and possibly TLV-TYPE and TLV-LENGTH fields. More...

element_container	m_elements
	Contains the sub-elements. More...

Buffer::const_iterator	m_end

size_t	m_size = 0
	Total size including Type-Length-Value. More...

uint32_t	m_type = tlv::Invalid
	TLV-TYPE. More...

Buffer::const_iterator	m_valueBegin

Buffer::const_iterator	m_valueEnd

Detailed Description

Represents a name component.

The Component class provides a read-only view of a Block interpreted as a name component. Although it inherits mutation methods from Block base class, they must not be used, because the enclosing Name would not be updated correctly.

Definition at line 84 of file name-component.hpp.

Member Typedef Documentation

using ndn::Block::element_const_iterator = element_container::const_iterator

inherited

Definition at line 47 of file block.hpp.

using ndn::Block::element_container = std::vector<Block>

inherited

Definition at line 45 of file block.hpp.

using ndn::Block::element_iterator = element_container::iterator

inherited

Definition at line 46 of file block.hpp.

Constructor & Destructor Documentation

ndn::name::Component::Component ( uint32_t type = tlv::GenericNameComponent )

explicit

Construct a NameComponent of TLV-TYPE type, using empty TLV-VALUE.

Exceptions

Error the NameComponent is invalid (see ensureValid).

Definition at line 98 of file name-component.cpp.

ndn::name::Component::Component ( const Block & wire )

Construct a NameComponent from block.

Exceptions

Error the NameComponent is invalid (see ensureValid).

This contructor enables implicit conversion from Block.

Definition at line 104 of file name-component.cpp.

ndn::name::Component::Component	(	uint32_t	type,
		ConstBufferPtr	buffer
	)

Construct a NameComponent of TLV-TYPE type, using TLV-VALUE from buffer.

Exceptions

Error the NameComponent is invalid (see ensureValid).

This constructor does not copy the underlying buffer, but retains a pointer to it. Therefore, the caller must not change the underlying buffer.

Definition at line 110 of file name-component.cpp.

ndn::name::Component::Component ( ConstBufferPtr buffer )

inlineexplicit

Construct a GenericNameComponent, using TLV-VALUE from buffer.

Exceptions

Error the NameComponent is invalid (see ensureValid).

This constructor does not copy the underlying buffer, but retains a pointer to it. Therefore, the caller must not change the underlying buffer.

Definition at line 126 of file name-component.hpp.

ndn::name::Component::Component	(	uint32_t	type,
		const Buffer &	buffer
	)

inline

Construct a NameComponent of TLV-TYPE type, copying TLV-VALUE from buffer.

Definition at line 134 of file name-component.hpp.

ndn::name::Component::Component ( const Buffer & buffer )

inlineexplicit

Construct a GenericNameComponent, copying TLV-VALUE from buffer.

Definition at line 143 of file name-component.hpp.

ndn::name::Component::Component	(	uint32_t	type,
		const uint8_t *	value,
		size_t	count
	)

Construct a NameComponent of TLV-TYPE type, copying count bytes at value as TLV-VALUE.

Definition at line 116 of file name-component.cpp.

ndn::name::Component::Component	(	const uint8_t *	value,
		size_t	count
	)

inline

Construct a GenericNameComponent, copying count bytes at value as TLV-VALUE.

Definition at line 157 of file name-component.hpp.

template<class Iterator >

ndn::name::Component::Component	(	uint32_t	type,
		Iterator	first,
		Iterator	last
	)

inline

Construct a NameComponent of TLV-TYPE type, copying TLV-VALUE from a range.

Template Parameters

Iterator an InputIterator dereferencing to a one-octet value type. More efficient implementation is available when it is a RandomAccessIterator.

Parameters

type	the TLV-TYPE.
first	beginning of the range.
last	past-end of the range.

Definition at line 171 of file name-component.hpp.

template<class Iterator >

ndn::name::Component::Component	(	Iterator	first,
		Iterator	last
	)

inline

Construct a GenericNameComponent, copying TLV-VALUE from a range.

Definition at line 180 of file name-component.hpp.

ndn::name::Component::Component ( const char * str )

explicit

Construct a GenericNameComponent, copying TLV-VALUE from a null-terminated string.

Bytes from the string are copied as is, and not interpreted as URI component.

Definition at line 122 of file name-component.cpp.

ndn::name::Component::Component ( const std::string & str )

explicit

Construct a GenericNameComponent, copying TLV-VALUE from a string.

Bytes from the string are copied as is, and not interpreted as URI component.

Definition at line 127 of file name-component.cpp.

Member Function Documentation

Buffer::const_iterator ndn::Block::begin ( ) const

inherited

Get begin iterator of encoded wire.

Precondition: hasWire() == true

Definition at line 262 of file block.cpp.

Block ndn::Block::blockFromValue ( ) const

inherited

Definition at line 313 of file block.cpp.

int ndn::name::Component::compare ( const Component & other ) const

Compare this to the other Component using NDN canonical ordering.

Parameters

other The other Component to compare with.

Return values

negative	this comes before other in canonical ordering
zero	this equals other
positive	this comes after other in canonical ordering

See also: https://named-data.net/doc/NDN-packet-spec/current/name.html#canonical-order

Definition at line 448 of file name-component.cpp.

const element_container& ndn::Block::elements ( ) const

inlineinherited

Get container of sub-elements.

Precondition: parse() has been executed

Definition at line 391 of file block.hpp.

element_const_iterator ndn::Block::elements_begin ( ) const

inlineinherited

Equivalent to elements().begin()

Definition at line 399 of file block.hpp.

element_const_iterator ndn::Block::elements_end ( ) const

inlineinherited

Equivalent to elements().end()

Definition at line 407 of file block.hpp.

size_t ndn::Block::elements_size ( ) const

inlineinherited

Equivalent to elements().size()

Definition at line 415 of file block.hpp.

bool ndn::name::Component::empty ( ) const

inline

Definition at line 534 of file name-component.hpp.

void ndn::Block::encode ( )

inherited

Encode sub-elements into TLV-VALUE.

Postcondition: TLV-VALUE contains sub-elements from elements()

Definition at line 352 of file block.cpp.

Buffer::const_iterator ndn::Block::end ( ) const

inherited

Get end iterator of encoded wire.

Precondition: hasWire() == true

Definition at line 271 of file block.cpp.

bool ndn::name::Component::equals ( const Component & other ) const

Check if this is the same component as other.

Parameters

other The other Component to compare with

Returns: true if the components are equal, otherwise false.

Definition at line 439 of file name-component.cpp.

Block::element_iterator ndn::Block::erase ( Block::element_const_iterator position )

inherited

Erase a sub-element.

Definition at line 442 of file block.cpp.

Block::element_iterator ndn::Block::erase	(	Block::element_const_iterator	first,
		Block::element_const_iterator	last
	)

inherited

Erase a range of sub-elements.

Definition at line 449 of file block.cpp.

Block::element_const_iterator ndn::Block::find ( uint32_t type ) const

inherited

Find the first sub-element of the specified TLV-TYPE.

Precondition: parse() has been executed

Returns: iterator in elements() to the found sub-element, or elements_end() if no such sub-element exists in elements()

Definition at line 425 of file block.cpp.

std::tuple< bool, Block > ndn::Block::fromBuffer	(	ConstBufferPtr	buffer,
		size_t	offset
	)

staticinherited

Try to parse Block from a wire buffer.

Parameters

buffer	a Buffer containing a TLV element at offset `offset`
offset	begin position of the TLV element within `buffer`

Note: This function does not throw upon decoding failure.

Returns: true and the parsed Block if parsing succeeds; otherwise false and an invalid Block

Definition at line 193 of file block.cpp.

std::tuple< bool, Block > ndn::Block::fromBuffer	(	const uint8_t *	buf,
		size_t	bufSize
	)

staticinherited

Try to parse Block from a raw buffer.

Parameters

buf	pointer to the first octet of a TLV element
bufSize	size of the raw buffer; may be greater than the actual size of the TLV element

Note: This function does not throw upon decoding failure.; This overload copies the TLV element octets into an internal wire buffer.

Returns: true and the parsed Block if parsing succeeds; otherwise false and an invalid Block

Definition at line 219 of file block.cpp.

Component ndn::name::Component::fromByteOffset ( uint64_t offset )

static

Create byte offset component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 368 of file name-component.cpp.

static Component ndn::name::Component::fromEscapedString	(	const char *	input,
		size_t	beginOffset,
		size_t	endOffset
	)

inlinestatic

Decode NameComponent from a URI component.

The URI component is read from [input+beginOffset, input+endOffset) range.

Exceptions

Error URI component does not represent a valid NameComponent.

Definition at line 229 of file name-component.hpp.

static Component ndn::name::Component::fromEscapedString ( const char * input )

inlinestatic

Decode NameComponent from a URI component.

Exceptions

Error URI component does not represent a valid NameComponent.

Definition at line 239 of file name-component.hpp.

Component ndn::name::Component::fromEscapedString ( const std::string & input )

static

Decode NameComponent from a URI component.

Exceptions

Error URI component does not represent a valid NameComponent.

Definition at line 148 of file name-component.cpp.

Component ndn::name::Component::fromImplicitSha256Digest ( ConstBufferPtr digest )

static

Create ImplicitSha256DigestComponent component.

Definition at line 407 of file name-component.cpp.

Component ndn::name::Component::fromImplicitSha256Digest	(	const uint8_t *	digest,
		size_t	digestSize
	)

static

Create ImplicitSha256DigestComponent component.

Definition at line 413 of file name-component.cpp.

Component ndn::name::Component::fromNumber	(	uint64_t	number,
		uint32_t	type = `tlv::GenericNameComponent`
	)

static

Create a component encoded as nonNegativeInteger.

See also: https://named-data.net/doc/NDN-packet-spec/current/tlv.html#non-negative-integer-encoding

Parameters

number	The non-negative number
type	TLV-TYPE

Definition at line 326 of file name-component.cpp.

Component ndn::name::Component::fromNumberWithMarker	(	uint8_t	marker,
		uint64_t	number
	)

static

Create a component encoded as NameComponentWithMarker.

NameComponentWithMarker is defined as:

NameComponentWithMarker ::= NAME-COMPONENT-TYPE TLV-LEGTH
                              Marker
                              includedNonNegativeInteger
Marker ::= BYTE
includedNonNegativeInteger ::= BYTE{1,2,4,8}
NDN-TLV := TLV-TYPE TLV-LENGTH TLV-VALUE?
TLV-TYPE := VAR-NUMBER
TLV-LENGTH := VAR-NUMBER
TLV-VALUE := BYTE+

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Parameters

marker	1-byte marker octet
number	The non-negative number

Definition at line 332 of file name-component.cpp.

Component ndn::name::Component::fromParametersSha256Digest ( ConstBufferPtr digest )

static

Create ParametersSha256DigestComponent component.

Definition at line 425 of file name-component.cpp.

Component ndn::name::Component::fromParametersSha256Digest	(	const uint8_t *	digest,
		size_t	digestSize
	)

static

Create ParametersSha256DigestComponent component.

Definition at line 431 of file name-component.cpp.

Component ndn::name::Component::fromSegment ( uint64_t segmentNo )

static

Create segment number component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 360 of file name-component.cpp.

static Component ndn::name::Component::fromSegmentOffset ( uint64_t offset )

inlinestatic

Deprecated:: use fromByteOffset

Definition at line 468 of file name-component.hpp.

Component ndn::name::Component::fromSequenceNumber ( uint64_t seqNo )

static

Create sequence number component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 385 of file name-component.cpp.

Block ndn::Block::fromStream ( std::istream & is )

staticinherited

Parse Block from an input stream.

Exceptions

tlv::Error TLV-LENGTH is zero or exceeds upper bound

Warning: If decoding fails, bytes are still consumed from the input stream.

Definition at line 161 of file block.cpp.

Component ndn::name::Component::fromTimestamp ( const time::system_clock::TimePoint & timePoint )

static

Create sequence number component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 376 of file name-component.cpp.

Component ndn::name::Component::fromVersion ( uint64_t version )

static

Create version component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 352 of file name-component.cpp.

const Block & ndn::Block::get ( uint32_t type ) const

inherited

Return the first sub-element of the specified TLV-TYPE.

Precondition: parse() has been executed

Exceptions

tlv::Error a sub-element of the specified type does not exist

Definition at line 413 of file block.cpp.

ConstBufferPtr ndn::Block::getBuffer ( ) const

inlineinherited

Get underlying buffer.

Definition at line 264 of file block.hpp.

Component ndn::name::Component::getSuccessor ( ) const

Get the successor of this name component.

The successor of a name component is defined as follows:

C represents the set of name components, and X,Y ∈ C.
Operator < is defined by canonical order on C.
Y is the successor of X, if (a) X < Y, and (b) ∄ Z ∈ C s.t. X < Z < Y.

In plain words, successor of a name component is the next possible name component.

Examples:

successor of sha256digest=0000000000000000000000000000000000000000000000000000000000000000 is sha256digest=0000000000000000000000000000000000000000000000000000000000000001.
successor of sha256digest=ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff is params-sha256=0000000000000000000000000000000000000000000000000000000000000000.
successor of params-sha256=0000000000000000000000000000000000000000000000000000000000000000 is params-sha256=0000000000000000000000000000000000000000000000000000000000000001.
successor of params-sha256=ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff is 3=....
successor of ... is %00.
successor of A is B.
successor of FF is %00%00.

Definition at line 473 of file name-component.cpp.

bool ndn::Block::hasValue ( ) const

inlinenoexceptinherited

Check if the Block has a non-empty TLV-VALUE.

This property reflects whether the underlying buffer contains a TLV-VALUE. If this is false, TLV-VALUE has zero-length. If this is true, TLV-VALUE may be zero-length.

See also: value_size()

Definition at line 287 of file block.hpp.

bool ndn::Block::hasWire ( ) const

inlinenoexceptinherited

Check if the Block contains a fully encoded wire representation.

A Block has a fully encoded wire if the underlying buffer exists and contains the full Type-Length-Value instead of just the TLV-VALUE field.

Definition at line 230 of file block.hpp.

Block::element_iterator ndn::Block::insert	(	Block::element_const_iterator	pos,
		const Block &	element
	)

inherited

Insert a sub-element.

Parameters

pos	position of the new sub-element
element	new sub-element to insert

Returns: iterator in elements() to the new sub-element

Definition at line 463 of file block.cpp.

bool ndn::name::Component::isByteOffset ( ) const

Check if the component is a byte offset per NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 217 of file name-component.cpp.

bool ndn::name::Component::isGeneric ( ) const

Check if the component is GenericComponent.

Definition at line 395 of file name-component.cpp.

bool ndn::name::Component::isImplicitSha256Digest ( ) const

Check if the component is ImplicitSha256DigestComponent.

Definition at line 401 of file name-component.cpp.

bool ndn::name::Component::isNumber ( ) const

Check if the component is a nonNegativeInteger.

See also: https://named-data.net/doc/NDN-packet-spec/current/tlv.html#non-negative-integer-encoding

Definition at line 188 of file name-component.cpp.

bool ndn::name::Component::isNumberWithMarker ( uint8_t marker ) const

Check if the component is a NameComponentWithMarker per NDN naming conventions rev1.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 195 of file name-component.cpp.

bool ndn::name::Component::isParametersSha256Digest ( ) const

Check if the component is ParametersSha256DigestComponent.

Definition at line 419 of file name-component.cpp.

bool ndn::name::Component::isSegment ( ) const

Check if the component is a segment number per NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 210 of file name-component.cpp.

bool ndn::name::Component::isSegmentOffset ( ) const

inline

Deprecated:: use isByteOffset

Definition at line 309 of file name-component.hpp.

bool ndn::name::Component::isSequenceNumber ( ) const

Check if the component is a sequence number per NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 231 of file name-component.cpp.

bool ndn::name::Component::isTimestamp ( ) const

Check if the component is a timestamp per NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 224 of file name-component.cpp.

bool ndn::Block::isValid ( ) const

inlinenoexceptinherited

Check if the Block is valid.

A Block is valid unless it has an invalid TLV-TYPE or is default-constructed. In particular, a Block with zero-length TLV-VALUE is valid.

Definition at line 188 of file block.hpp.

bool ndn::name::Component::isVersion ( ) const

Check if the component is a version per NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Definition at line 203 of file name-component.cpp.

ndn::Block::operator boost::asio::const_buffer ( ) const

inherited

Implicit conversion to boost::asio::const_buffer

Definition at line 471 of file block.cpp.

bool ndn::name::Component::operator!= ( const Component & other ) const

inline

Check if this is not the same component as other.

Parameters

other The other Component to compare with

Returns: true if the components are not equal, otherwise false

Definition at line 579 of file name-component.hpp.

bool ndn::name::Component::operator< ( const Component & other ) const

inline

Check if the *this is less than the other in NDN canonical ordering.

Parameters

other The other Component to compare with

See also: https://named-data.net/doc/NDN-packet-spec/current/name.html#canonical-order

Definition at line 603 of file name-component.hpp.

bool ndn::name::Component::operator<= ( const Component & other ) const

inline

Check if the *this is less than or equal to the other in NDN canonical ordering.

Parameters

other The other Component to compare with

See also: https://named-data.net/doc/NDN-packet-spec/current/name.html#canonical-order

Definition at line 591 of file name-component.hpp.

bool ndn::name::Component::operator== ( const Component & other ) const

inline

Check if this is the same component as other.

Parameters

other The other Component to compare with.

Returns: true if the components are equal, otherwise false.

Definition at line 568 of file name-component.hpp.

bool ndn::name::Component::operator> ( const Component & other ) const

inline

Check if the *this is greater than the other in NDN canonical ordering.

Parameters

other The other Component to compare with

See also: https://named-data.net/doc/NDN-packet-spec/current/name.html#canonical-order

Definition at line 627 of file name-component.hpp.

bool ndn::name::Component::operator>= ( const Component & other ) const

inline

Check if the *this is greater or equal than the other in NDN canonical ordering.

Parameters

other The other Component to compare with

See also: https://named-data.net/doc/NDN-packet-spec/current/name.html#canonical-order

Definition at line 615 of file name-component.hpp.

void ndn::Block::parse ( ) const

inherited

Parse TLV-VALUE into sub-elements.

Postcondition: elements() reflects sub-elements found in TLV-VALUE

Exceptions

tlv::Error TLV-VALUE is not a sequence of TLV elements

Note: This method does not perform recursive parsing.; This method has no effect if elements() is already populated.; This method is not really const, but it does not modify any data.

Definition at line 324 of file block.cpp.

void ndn::Block::push_back ( const Block & element )

inherited

Append a sub-element.

Definition at line 456 of file block.cpp.

void ndn::Block::remove ( uint32_t type )

inherited

Remove all sub-elements of the specified TLV-TYPE.

Precondition: parse() has been executed

Postcondition: find(type) == elements_end()

Definition at line 432 of file block.cpp.

void ndn::Block::reset ( )

noexceptinherited

Reset the Block to a default-constructed state.

Equivalent to *this = Block().

Postcondition: isValid() == false

See also: resetWire()

Definition at line 249 of file block.cpp.

void ndn::Block::resetWire ( )

noexceptinherited

Reset wire buffer but keep TLV-TYPE and sub-elements (if any)

Postcondition: hasWire() == false; hasValue() == false

See also: reset()

Definition at line 255 of file block.cpp.

size_t ndn::Block::size ( ) const

inherited

Return the size of the encoded wire, i.e.

of the whole TLV

Precondition: isValid() == true

See also: value_size()

Definition at line 289 of file block.cpp.

uint64_t ndn::name::Component::toByteOffset ( ) const

Interpret as byte offset component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Exceptions

tlv::Error not a ByteOffset component interpreted by the chosen convention(s).

Definition at line 284 of file name-component.cpp.

uint64_t ndn::name::Component::toNumber ( ) const

Interpret this name component as nonNegativeInteger.

See also: https://named-data.net/doc/NDN-packet-spec/current/tlv.html#non-negative-integer-encoding

Returns: The integer number.

Definition at line 240 of file name-component.cpp.

uint64_t ndn::name::Component::toNumberWithMarker ( uint8_t marker ) const

Interpret this name component as NameComponentWithMarker.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Parameters

marker 1-byte octet of the marker

Returns: The integer number.

Exceptions

Error if name component does not have the specified marker. tlv::Error if format does not follow NameComponentWithMarker specification.

Definition at line 249 of file name-component.cpp.

uint64_t ndn::name::Component::toSegment ( ) const

Interpret as segment number component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Exceptions

tlv::Error not a Segment component interpreted by the chosen convention(s).

Definition at line 272 of file name-component.cpp.

uint64_t ndn::name::Component::toSegmentOffset ( ) const

inline

Deprecated:: use toByteOffset

Definition at line 383 of file name-component.hpp.

uint64_t ndn::name::Component::toSequenceNumber ( ) const

Interpret as sequence number component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Exceptions

tlv::Error not a SequenceNumber component interpreted by the chosen convention(s).

Definition at line 312 of file name-component.cpp.

time::system_clock::TimePoint ndn::name::Component::toTimestamp ( ) const

Interpret as timestamp component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Exceptions

tlv::Error not a Timestamp component interpreted by the chosen convention(s).

Definition at line 296 of file name-component.cpp.

void ndn::name::Component::toUri ( std::ostream & os ) const

Write *this to the output stream, escaping characters according to the NDN URI Scheme.

This also adds "..." to a value with zero or more "."

Parameters

os	The output stream where to write the URI escaped version of *this

Definition at line 172 of file name-component.cpp.

std::string ndn::name::Component::toUri ( ) const

Convert *this by escaping characters according to the NDN URI Scheme.

This also adds "..." to a value with zero or more "."

Returns: The escaped string

Definition at line 178 of file name-component.cpp.

uint64_t ndn::name::Component::toVersion ( ) const

Interpret as version component using NDN naming conventions.

See also: NDN Naming Conventions https://named-data.net/doc/tech-memos/naming-conventions.pdf

Exceptions

tlv::Error not a Version component interpreted by the chosen convention(s).

Definition at line 260 of file name-component.cpp.

uint32_t ndn::Block::type ( ) const

inlineinherited

Return the TLV-TYPE of the Block.

Note: This will return tlv::Invalid if isValid() is false.

Definition at line 274 of file block.hpp.

const uint8_t * ndn::Block::value ( ) const

noexceptinherited

Return a raw pointer to the beginning of TLV-VALUE.

See also: wire()

Definition at line 301 of file block.cpp.

Buffer::const_iterator ndn::Block::value_begin ( ) const

inlineinherited

Get begin iterator of TLV-VALUE.

Precondition: hasValue() == true

Definition at line 296 of file block.hpp.

Buffer::const_iterator ndn::Block::value_end ( ) const

inlineinherited

Get end iterator of TLV-VALUE.

Precondition: hasValue() == true

Definition at line 305 of file block.hpp.

size_t ndn::Block::value_size ( ) const

noexceptinherited

Return the size of TLV-VALUE, aka TLV-LENGTH.

See also: size()

Definition at line 307 of file block.cpp.

const uint8_t * ndn::Block::wire ( ) const

inherited

Return a raw pointer to the beginning of the encoded wire.

Precondition: hasWire() == true

See also: value()

Definition at line 280 of file block.cpp.

void ndn::name::Component::wireDecode ( const Block & wire )

Decode from the wire format.

Definition at line 519 of file name-component.cpp.

template<encoding::Tag TAG>

size_t ndn::name::Component::wireEncode ( EncodingImpl< TAG > & encoder ) const

Fast encoding or block size estimation.

Definition at line 490 of file name-component.cpp.

const Block & ndn::name::Component::wireEncode ( ) const

Encode to a wire format.

Definition at line 503 of file name-component.cpp.

Member Data Documentation

Buffer::const_iterator ndn::Block::m_begin

protectedinherited

See also: m_buffer

Definition at line 453 of file block.hpp.

shared_ptr<const Buffer> ndn::Block::m_buffer

protectedinherited

Underlying buffer storing TLV-VALUE and possibly TLV-TYPE and TLV-LENGTH fields.

If m_buffer is nullptr, this is an invalid or zero-length Block with TLV-TYPE given in m_type. Otherwise,

[m_valueBegin, m_valueEnd) point to the TLV-VALUE inside m_buffer.
If m_begin != m_end, [m_begin, m_end) point to Type-Length-Value of this Block in m_buffer. Otherwise, m_buffer does not contain TLV-TYPE and TLV-LENGTH fields.

Definition at line 452 of file block.hpp.

element_container ndn::Block::m_elements

mutableprotectedinherited

Contains the sub-elements.

This field is valid only if parse() has been executed.

Definition at line 471 of file block.hpp.

Buffer::const_iterator ndn::Block::m_end

protectedinherited

See also: m_buffer

Definition at line 454 of file block.hpp.

size_t ndn::Block::m_size = 0

protectedinherited

Total size including Type-Length-Value.

This field is meaningful only if isValid() is true.

Definition at line 465 of file block.hpp.

uint32_t ndn::Block::m_type = tlv::Invalid

protectedinherited

TLV-TYPE.

Definition at line 459 of file block.hpp.

Buffer::const_iterator ndn::Block::m_valueBegin

protectedinherited

See also: m_buffer

Definition at line 456 of file block.hpp.

Buffer::const_iterator ndn::Block::m_valueEnd

protectedinherited

See also: m_buffer

Definition at line 457 of file block.hpp.

ndn-cxx: NDN C++ library with eXperimental eXtensions 0.6.6 documentation

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation