linkpresentation

package
v0.19.0 Latest Latest
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 Go to latest Published: Aug 11, 2026 License: MIT Imports: 13 Imported by: 0

Documentation

Rendered for darwin/amd64

Overview

Package linkpresentation provides a fluent Go API over the macOS LinkPresentation framework.

Construction

New… functions create objects; each With… method sets one property and returns its receiver, so configuration calls chain. A <Type>FromID constructor adopts an Objective-C object obtained elsewhere.

Lifecycle

A wrapper releases its Objective-C object automatically once the garbage collector finds it unreachable. Call Release to relinquish the reference deterministically (for objects holding scarce resources); Release is idempotent, and afterwards the wrapper's methods are no-ops returning zero values.

Errors

Failing calls return errors carrying the Objective-C error domain and code. Match them against this package's Err… sentinel values with errors.Is, or inspect domain, code, and Apple's prose via errors.As with *errkit.Error.

Main-thread requirements

Methods, setters, and constructors of classes Apple isolates to the main thread run there automatically; callers never need to arrange main-thread dispatch for the generated API.

Index

Constants

This section is empty.

Variables

View Source 
var ErrMetadataFetchCancelled = errkit.New("LPErrorDomain", 3)

ErrMetadataFetchCancelled matches the LinkPresentation error LPErrorMetadataFetchCancelled.

View Source 
var ErrMetadataFetchFailed = errkit.New("LPErrorDomain", 2)

ErrMetadataFetchFailed matches the LinkPresentation error LPErrorMetadataFetchFailed.

View Source 
var ErrMetadataFetchNotAllowed = errkit.New("LPErrorDomain", 5)

ErrMetadataFetchNotAllowed matches the LinkPresentation error LPErrorMetadataFetchNotAllowed.

View Source 
var ErrMetadataFetchTimedOut = errkit.New("LPErrorDomain", 4)

ErrMetadataFetchTimedOut matches the LinkPresentation error LPErrorMetadataFetchTimedOut.

View Source 
var ErrUnknown = errkit.New("LPErrorDomain", 1)

ErrUnknown matches the LinkPresentation error LPErrorUnknown.

Functions

func LPErrorDomain 

func LPErrorDomain() obj.Object

LPErrorDomain returns the string constant LPErrorDomain, for use as a dictionary key or argument.

Types

type CGLCPContextPriorityRequest 

type CGLCPContextPriorityRequest int32
const (
	KCGLCPContextPriorityRequestHigh   CGLCPContextPriorityRequest = 0
	KCGLCPContextPriorityRequestNormal CGLCPContextPriorityRequest = 1
	KCGLCPContextPriorityRequestLow    CGLCPContextPriorityRequest = 2
)

func (CGLCPContextPriorityRequest) String 

func (e CGLCPContextPriorityRequest) String() string

String returns the CGLCPContextPriorityRequest constant's name, or its numeric form when the value is not a known constant.

type Clockid added in v0.17.0 

type Clockid int32
const (
	ClockidRealtime           Clockid = 0
	ClockidMonotonic          Clockid = 6
	ClockidMonotonicRaw       Clockid = 4
	ClockidMonotonicRawApprox Clockid = 5
	ClockidUptimeRaw          Clockid = 8
	ClockidUptimeRawApprox    Clockid = 9
	ClockidProcessCputimeID   Clockid = 12
	ClockidThreadCputimeID    Clockid = 16
)

func (Clockid) String added in v0.17.0 

func (e Clockid) String() string

String returns the Clockid constant's name, or its numeric form when the value is not a known constant.

type DispatchAutoreleaseFrequency added in v0.17.0 

type DispatchAutoreleaseFrequency uint64
const (
	DispatchAutoreleaseFrequencyInherit  DispatchAutoreleaseFrequency = 0
	DispatchAutoreleaseFrequencyWorkItem DispatchAutoreleaseFrequency = 1
	DispatchAutoreleaseFrequencyNever    DispatchAutoreleaseFrequency = 2
)

func (DispatchAutoreleaseFrequency) String added in v0.17.0 

func (e DispatchAutoreleaseFrequency) String() string

String returns the DispatchAutoreleaseFrequency constant's name, or its numeric form when the value is not a known constant.

type DispatchBlockFlags added in v0.17.0 

type DispatchBlockFlags uint64

Bitmask — values may be combined with |. 

const (
	DispatchBlockFlagsBarrier         DispatchBlockFlags = 1
	DispatchBlockFlagsDetached        DispatchBlockFlags = 2
	DispatchBlockFlagsAssignCurrent   DispatchBlockFlags = 4
	DispatchBlockFlagsNoQosClass      DispatchBlockFlags = 8
	DispatchBlockFlagsInheritQosClass DispatchBlockFlags = 16
	DispatchBlockFlagsEnforceQosClass DispatchBlockFlags = 32
)

func (DispatchBlockFlags) String added in v0.17.0 

func (e DispatchBlockFlags) String() string

String returns the DispatchBlockFlags constant's name, or its numeric form when the value is not a known constant.

type EntryID added in v0.17.0 

type EntryID int32
const (
	EntryIDFirstEntry EntryID = 0
	EntryIDNextEntry  EntryID = -1
	EntryIDLastEntry  EntryID = -2
)

func (EntryID) String added in v0.17.0 

func (e EntryID) String() string

String returns the EntryID constant's name, or its numeric form when the value is not a known constant.

type ErrorCode added in v0.17.0 

type ErrorCode int64

Possible error values that can be returned from LinkPresentation APIs. 

const (
	// An unknown error.
	ErrorUnknown ErrorCode = 1
	// An error indicating that a metadata fetch failed.
	ErrorMetadataFetchFailed ErrorCode = 2
	// An error indicating that the metadata fetch was canceled by the client.
	ErrorMetadataFetchCancelled ErrorCode = 3
	// An error indicating that the metadata fetch took longer than allowed.
	ErrorMetadataFetchTimedOut ErrorCode = 4
	// An error indicating that the metadata fetch was not allowed due to system policies.
	ErrorMetadataFetchNotAllowed ErrorCode = 5
)

func (ErrorCode) String added in v0.17.0 

func (e ErrorCode) String() string

String returns the ErrorCode constant's name, or its numeric form when the value is not a known constant.

type EvCmd 

type EvCmd int32
const (
	EVNOP   EvCmd = 0
	EVHIDE  EvCmd = 1
	EVSHOW  EvCmd = 2
	EVMOVE  EvCmd = 3
	EVLEVEL EvCmd = 4
)

func (EvCmd) String 

func (e EvCmd) String() string

String returns the EvCmd constant's name, or its numeric form when the value is not a known constant.

type FilesecProperty added in v0.17.0 

type FilesecProperty int32
const (
	FilesecPropertyOwner        FilesecProperty = 1
	FilesecPropertyGroup        FilesecProperty = 2
	FilesecPropertyUUID         FilesecProperty = 3
	FilesecPropertyMode         FilesecProperty = 4
	FilesecPropertyACL          FilesecProperty = 5
	FilesecPropertyGrpuuid      FilesecProperty = 6
	FilesecPropertyACLRaw       FilesecProperty = 100
	FilesecPropertyACLAllocsize FilesecProperty = 101
)

func (FilesecProperty) String added in v0.17.0 

func (e FilesecProperty) String() string

String returns the FilesecProperty constant's name, or its numeric form when the value is not a known constant.

type Flag added in v0.17.0 

type Flag int32
const (
	FlagFlagDeferInherit      Flag = 1
	FlagFlagNoInherit         Flag = 131072
	FlagEntryInherited        Flag = 16
	FlagEntryFileInherit      Flag = 32
	FlagEntryDirectoryInherit Flag = 64
	FlagEntryLimitInherit     Flag = 128
	FlagEntryOnlyInherit      Flag = 256
)

func (Flag) String added in v0.17.0 

func (e Flag) String() string

String returns the Flag constant's name, or its numeric form when the value is not a known constant.

type Idtype added in v0.17.0 

type Idtype int32
const (
	IdtypeAll  Idtype = 0
	IdtypePid  Idtype = 1
	IdtypePgid Idtype = 2
)

func (Idtype) String added in v0.17.0 

func (e Idtype) String() string

String returns the Idtype constant's name, or its numeric form when the value is not a known constant.

type IpcInfoObjectType added in v0.17.0 

type IpcInfoObjectType uint32
const (
	IpcInfoObjectTypeNone               IpcInfoObjectType = 0
	IpcInfoObjectTypeThreadControl      IpcInfoObjectType = 1
	IpcInfoObjectTypeTaskControl        IpcInfoObjectType = 2
	IpcInfoObjectTypeHost               IpcInfoObjectType = 3
	IpcInfoObjectTypeHostPriv           IpcInfoObjectType = 4
	IpcInfoObjectTypeProcessor          IpcInfoObjectType = 5
	IpcInfoObjectTypeProcessorSet       IpcInfoObjectType = 6
	IpcInfoObjectTypeProcessorSetName   IpcInfoObjectType = 7
	IpcInfoObjectTypeTimer              IpcInfoObjectType = 8
	IpcInfoObjectTypePortSubstOnce      IpcInfoObjectType = 9
	IpcInfoObjectTypeMig                IpcInfoObjectType = 10
	IpcInfoObjectTypeMemoryObject       IpcInfoObjectType = 11
	IpcInfoObjectTypeXmmPager           IpcInfoObjectType = 12
	IpcInfoObjectTypeXmmKernel          IpcInfoObjectType = 13
	IpcInfoObjectTypeXmmReply           IpcInfoObjectType = 14
	IpcInfoObjectTypeUndReply           IpcInfoObjectType = 15
	IpcInfoObjectTypeHostNotify         IpcInfoObjectType = 16
	IpcInfoObjectTypeHostSecurity       IpcInfoObjectType = 17
	IpcInfoObjectTypeLedger             IpcInfoObjectType = 18
	IpcInfoObjectTypeMainDevice         IpcInfoObjectType = 19
	IpcInfoObjectTypeTaskName           IpcInfoObjectType = 20
	IpcInfoObjectTypeSubsystem          IpcInfoObjectType = 21
	IpcInfoObjectTypeIODoneQueue        IpcInfoObjectType = 22
	IpcInfoObjectTypeSemaphore          IpcInfoObjectType = 23
	IpcInfoObjectTypeLockSet            IpcInfoObjectType = 24
	IpcInfoObjectTypeClock              IpcInfoObjectType = 25
	IpcInfoObjectTypeClockCtrl          IpcInfoObjectType = 26
	IpcInfoObjectTypeIokitIdent         IpcInfoObjectType = 27
	IpcInfoObjectTypeNamedEntry         IpcInfoObjectType = 28
	IpcInfoObjectTypeIokitConnect       IpcInfoObjectType = 29
	IpcInfoObjectTypeIokitObject        IpcInfoObjectType = 30
	IpcInfoObjectTypeUpl                IpcInfoObjectType = 31
	IpcInfoObjectTypeMemObjControl      IpcInfoObjectType = 32
	IpcInfoObjectTypeAuSessionport      IpcInfoObjectType = 33
	IpcInfoObjectTypeFileport           IpcInfoObjectType = 34
	IpcInfoObjectTypeLabelh             IpcInfoObjectType = 35
	IpcInfoObjectTypeTaskResume         IpcInfoObjectType = 36
	IpcInfoObjectTypeVoucher            IpcInfoObjectType = 37
	IpcInfoObjectTypeVoucherAttrControl IpcInfoObjectType = 38
	IpcInfoObjectTypeWorkInterval       IpcInfoObjectType = 39
	IpcInfoObjectTypeUxHandler          IpcInfoObjectType = 40
	IpcInfoObjectTypeUextObject         IpcInfoObjectType = 41
	IpcInfoObjectTypeArcadeReg          IpcInfoObjectType = 42
	IpcInfoObjectTypeEventlink          IpcInfoObjectType = 43
	IpcInfoObjectTypeTaskInspect        IpcInfoObjectType = 44
	IpcInfoObjectTypeTaskRead           IpcInfoObjectType = 45
	IpcInfoObjectTypeThreadInspect      IpcInfoObjectType = 46
	IpcInfoObjectTypeThreadRead         IpcInfoObjectType = 47
	IpcInfoObjectTypeSuidCred           IpcInfoObjectType = 48
	IpcInfoObjectTypeHypervisor         IpcInfoObjectType = 49
	IpcInfoObjectTypeTaskIDToken        IpcInfoObjectType = 50
	IpcInfoObjectTypeTaskFatal          IpcInfoObjectType = 51
	IpcInfoObjectTypeKcdata             IpcInfoObjectType = 52
	IpcInfoObjectTypeExclavesResource   IpcInfoObjectType = 53
	IpcInfoObjectTypeThreadResume       IpcInfoObjectType = 54
	IpcInfoObjectTypeUnknown            IpcInfoObjectType = 4294967295
)

func (IpcInfoObjectType) String added in v0.17.0 

func (e IpcInfoObjectType) String() string

String returns the IpcInfoObjectType constant's name, or its numeric form when the value is not a known constant.

type LaunchDataType added in v0.17.0 

type LaunchDataType int32
const (
	LaunchDataTypeDictionary LaunchDataType = 1
	LaunchDataTypeArray      LaunchDataType = 2
	LaunchDataTypeFd         LaunchDataType = 3
	LaunchDataTypeInteger    LaunchDataType = 4
	LaunchDataTypeReal       LaunchDataType = 5
	LaunchDataTypeBool       LaunchDataType = 6
	LaunchDataTypeString     LaunchDataType = 7
	LaunchDataTypeOpaque     LaunchDataType = 8
	LaunchDataTypeErrno      LaunchDataType = 9
	LaunchDataTypeMachport   LaunchDataType = 10
)

func (LaunchDataType) String added in v0.17.0 

func (e LaunchDataType) String() string

String returns the LaunchDataType constant's name, or its numeric form when the value is not a known constant.

type LinkMetadata added in v0.17.0 

type LinkMetadata struct {
	objref.Handle
}

LinkMetadata is an idiomatic wrapper over the Objective-C class LPLinkMetadata.

An object that contains metadata about a URL.

func LinkMetadataFromID added in v0.17.0 

func LinkMetadataFromID(id objc.ID) *LinkMetadata

LinkMetadataFromID adopts an existing Objective-C object as a LinkMetadata (nil for 0), retaining it and registering a release finalizer.

func NewLinkMetadata added in v0.17.0 

func NewLinkMetadata() *LinkMetadata

NewLinkMetadata creates a new LinkMetadata.

func (*LinkMetadata) Description added in v0.17.0 

func (lm *LinkMetadata) Description() string

Description returns the object's -description text.

func (*LinkMetadata) IconProvider added in v0.17.0 

func (lm *LinkMetadata) IconProvider() *foundation.ItemProvider

IconProvider returns an object that retrieves data corresponding to a representative icon for the URL.

func (*LinkMetadata) ImageProvider added in v0.17.0 

func (lm *LinkMetadata) ImageProvider() *foundation.ItemProvider

ImageProvider returns an object that retrieves data corresponding to a representative image for the URL.

func (*LinkMetadata) IsEqual added in v0.17.0 

func (lm *LinkMetadata) IsEqual(other obj.Object) bool

IsEqual reports Objective-C equality (isEqual:) with another object.

func (*LinkMetadata) IsKind added in v0.17.0 

func (lm *LinkMetadata) IsKind(className string) bool

IsKind reports whether the object is an instance of the named class or a subclass.

func (*LinkMetadata) OriginalURL added in v0.17.0 

func (lm *LinkMetadata) OriginalURL() string

OriginalURL returns the original URL of the metadata request.

func (*LinkMetadata) RemoteVideoURL added in v0.17.0 

func (lm *LinkMetadata) RemoteVideoURL() string

RemoteVideoURL returns a remote URL corresponding to a representative video for the URL. This may reference a remote video file that <doc://com.apple.documentation/documentation/avfoundation> can stream.

func (*LinkMetadata) String added in v0.17.0 

func (lm *LinkMetadata) String() string

String returns the object's -description text, so a wrapper prints usefully under fmt.

func (*LinkMetadata) Title added in v0.17.0 

func (lm *LinkMetadata) Title() string

Title returns a representative title for the URL.

func (*LinkMetadata) URL added in v0.17.0 

func (lm *LinkMetadata) URL() string

URL returns the URL that returned the metadata, taking server-side redirects into account. The URL that returns the metadata may differ from the “LPLinkMetadata/originalURL“ to which you sent the metadata request. This can happen if the server redirects the request, for example, when a resource has moved, or when the original URL is a domain alias.

func (*LinkMetadata) VideoProvider added in v0.17.0 

func (lm *LinkMetadata) VideoProvider() *foundation.ItemProvider

VideoProvider returns an object that retrieves data corresponding to a representative video for the URL. The item provider returns a video that <doc://com.apple.documentation/documentation/avfoundation> can play.

func (*LinkMetadata) WithIconProvider added in v0.17.0 

func (lm *LinkMetadata) WithIconProvider(iconProvider obj.Object) *LinkMetadata

WithIconProvider sets an object that retrieves data corresponding to a representative icon for the URL.

func (*LinkMetadata) WithImageProvider added in v0.17.0 

func (lm *LinkMetadata) WithImageProvider(imageProvider obj.Object) *LinkMetadata

WithImageProvider sets an object that retrieves data corresponding to a representative image for the URL.

func (*LinkMetadata) WithOriginalURL added in v0.17.0 

func (lm *LinkMetadata) WithOriginalURL(originalURL string) *LinkMetadata

WithOriginalURL sets the original URL of the metadata request.

func (*LinkMetadata) WithRemoteVideoURL added in v0.17.0 

func (lm *LinkMetadata) WithRemoteVideoURL(remoteVideoURL string) *LinkMetadata

WithRemoteVideoURL sets a remote URL corresponding to a representative video for the URL.

func (*LinkMetadata) WithTitle added in v0.17.0 

func (lm *LinkMetadata) WithTitle(title string) *LinkMetadata

WithTitle sets a representative title for the URL.

func (*LinkMetadata) WithURL added in v0.17.0 

func (lm *LinkMetadata) WithURL(url string) *LinkMetadata

WithURL sets the URL that returned the metadata, taking server-side redirects into account.

func (*LinkMetadata) WithVideoProvider added in v0.17.0 

func (lm *LinkMetadata) WithVideoProvider(videoProvider obj.Object) *LinkMetadata

WithVideoProvider sets an object that retrieves data corresponding to a representative video for the URL.

type LinkView added in v0.17.0 

type LinkView struct {
	objref.Handle
}

LinkView is an idiomatic wrapper over the Objective-C class LPLinkView.

A rich visual representation of a link.

func LinkViewFromID added in v0.17.0 

func LinkViewFromID(id objc.ID) *LinkView

LinkViewFromID adopts an existing Objective-C object as a LinkView (nil for 0), retaining it and registering a release finalizer.

func NewLinkViewWithMetadata added in v0.17.0 

func NewLinkViewWithMetadata(metadata *LinkMetadata) *LinkView

NewLinkViewWithMetadata initializes a link view with specified metadata.

func NewLinkViewWithURL added in v0.17.0 

func NewLinkViewWithURL(url string) *LinkView

NewLinkViewWithURL initializes a placeholder link view without metadata for a given URL.

func (*LinkView) Description added in v0.17.0 

func (lv *LinkView) Description() string

Description returns the object's -description text.

func (*LinkView) IsEqual added in v0.17.0 

func (lv *LinkView) IsEqual(other obj.Object) bool

IsEqual reports Objective-C equality (isEqual:) with another object.

func (*LinkView) IsKind added in v0.17.0 

func (lv *LinkView) IsKind(className string) bool

IsKind reports whether the object is an instance of the named class or a subclass.

func (*LinkView) Metadata added in v0.17.0 

func (lv *LinkView) Metadata() *LinkMetadata

Metadata returns the metadata.

func (*LinkView) String added in v0.17.0 

func (lv *LinkView) String() string

String returns the object's -description text, so a wrapper prints usefully under fmt.

func (*LinkView) WithMetadata added in v0.17.0 

func (lv *LinkView) WithMetadata(metadata *LinkMetadata) *LinkView

WithMetadata sets the metadata from which to generate a rich presentation.

type MDLabelDomain 

type MDLabelDomain int32

These constants are used to specify a domain to MDLabelCreate(). 

const (
	KMDLabelUserDomain  MDLabelDomain = 0
	KMDLabelLocalDomain MDLabelDomain = 1
)

func (MDLabelDomain) String 

func (e MDLabelDomain) String() string

String returns the MDLabelDomain constant's name, or its numeric form when the value is not a known constant.

type MDQueryOptionFlags 

type MDQueryOptionFlags int32
const (
	KMDQuerySynchronous        MDQueryOptionFlags = 1
	KMDQueryWantsUpdates       MDQueryOptionFlags = 4
	KMDQueryAllowFSTranslation MDQueryOptionFlags = 8
)

func (MDQueryOptionFlags) String 

func (e MDQueryOptionFlags) String() string

String returns the MDQueryOptionFlags constant's name, or its numeric form when the value is not a known constant.

type MDQuerySortOptionFlags 

type MDQuerySortOptionFlags int32
const (
	KMDQueryReverseSortOrderFlag MDQuerySortOptionFlags = 1
)

func (MDQuerySortOptionFlags) String 

func (e MDQuerySortOptionFlags) String() string

String returns the MDQuerySortOptionFlags constant's name, or its numeric form when the value is not a known constant.

type MachVMRangeFlags added in v0.17.0 

type MachVMRangeFlags uint64

Bitmask — values may be combined with |. 

const (
	MachVMRangeFlagsNone MachVMRangeFlags = 0
)

func (MachVMRangeFlags) String added in v0.17.0 

func (e MachVMRangeFlags) String() string

String returns the MachVMRangeFlags constant's name, or its numeric form when the value is not a known constant.

type MachVMRangeFlavor added in v0.17.0 

type MachVMRangeFlavor uint32
const (
	MachVMRangeFlavorInvalid MachVMRangeFlavor = 0
	MachVMRangeFlavorV1      MachVMRangeFlavor = 1
)

func (MachVMRangeFlavor) String added in v0.17.0 

func (e MachVMRangeFlavor) String() string

String returns the MachVMRangeFlavor constant's name, or its numeric form when the value is not a known constant.

type MachVMRangeTag added in v0.17.0 

type MachVMRangeTag uint16
const (
	MachVMRangeTagDefault MachVMRangeTag = 0
	MachVMRangeTagData    MachVMRangeTag = 1
	MachVMRangeTagFixed   MachVMRangeTag = 2
)

func (MachVMRangeTag) String added in v0.17.0 

func (e MachVMRangeTag) String() string

String returns the MachVMRangeTag constant's name, or its numeric form when the value is not a known constant.

type MetadataProvider added in v0.17.0 

type MetadataProvider struct {
	objref.Handle
}

MetadataProvider is an idiomatic wrapper over the Objective-C class LPMetadataProvider.

An object that retrieves metadata for a URL.

func MetadataProviderFromID added in v0.17.0 

func MetadataProviderFromID(id objc.ID) *MetadataProvider

MetadataProviderFromID adopts an existing Objective-C object as a MetadataProvider (nil for 0), retaining it and registering a release finalizer.

func NewMetadataProvider added in v0.17.0 

func NewMetadataProvider() *MetadataProvider

NewMetadataProvider creates a new MetadataProvider.

func (*MetadataProvider) Cancel added in v0.17.0 

func (mp *MetadataProvider) Cancel()

Cancel cancels a metadata request.

func (*MetadataProvider) Description added in v0.17.0 

func (mp *MetadataProvider) Description() string

Description returns the object's -description text.

func (*MetadataProvider) IsEqual added in v0.17.0 

func (mp *MetadataProvider) IsEqual(other obj.Object) bool

IsEqual reports Objective-C equality (isEqual:) with another object.

func (*MetadataProvider) IsKind added in v0.17.0 

func (mp *MetadataProvider) IsKind(className string) bool

IsKind reports whether the object is an instance of the named class or a subclass.

func (*MetadataProvider) ShouldFetchSubresources added in v0.17.0 

func (mp *MetadataProvider) ShouldFetchSubresources() bool

ShouldFetchSubresources reports whether to download subresources specified by the metadata. Subresources include the icon, image, or video. When set to `false`, the returned “LPLinkMetadata“ object consists only of metadata retrieved from the main resource identified by the url passed to “LPMetadataProvider/startFetchingMetadataForURL:completionHandler:“. The default value is `true`.

func (*MetadataProvider) StartFetchingMetadataForRequest added in v0.17.0 

func (mp *MetadataProvider) StartFetchingMetadataForRequest(ctx context.Context, request obj.Object) (result *LinkMetadata, err error)

StartFetchingMetadataForRequest fetches metadata for the given NSURLRequest.

StartFetchingMetadataForRequest blocks until the operation completes or ctx is cancelled.

func (*MetadataProvider) StartFetchingMetadataForURL added in v0.17.0 

func (mp *MetadataProvider) StartFetchingMetadataForURL(ctx context.Context, url string) (result *LinkMetadata, err error)

StartFetchingMetadataForURL fetches metadata for the given URL.

StartFetchingMetadataForURL blocks until the operation completes or ctx is cancelled.

func (*MetadataProvider) String added in v0.17.0 

func (mp *MetadataProvider) String() string

String returns the object's -description text, so a wrapper prints usefully under fmt.

func (*MetadataProvider) Timeout added in v0.17.0 

func (mp *MetadataProvider) Timeout() float64

Timeout returns the time interval after which the request automatically fails if it hasn’t already completed. The default timeout interval is 30 seconds. If a metadata fetch takes longer than the timeout interval, the completion handler is called with the error code “LPErrorCode/LPErrorMetadataFetchTimedOut“.

func (*MetadataProvider) WithShouldFetchSubresources added in v0.17.0 

func (mp *MetadataProvider) WithShouldFetchSubresources(shouldFetchSubresources bool) *MetadataProvider

WithShouldFetchSubresources sets a Boolean value indicating whether to download subresources specified by the metadata.

func (*MetadataProvider) WithTimeout added in v0.17.0 

func (mp *MetadataProvider) WithTimeout(timeout float64) *MetadataProvider

WithTimeout sets the time interval after which the request automatically fails if it hasn’t already completed.

type MpoFlags added in v0.17.0 

type MpoFlags uint32

Bitmask — values may be combined with |. 

const (
	MpoFlagsPort                        MpoFlags = 0
	MpoFlagsServicePort                 MpoFlags = 1024
	MpoFlagsConnectionPort              MpoFlags = 2048
	MpoFlagsReplyPort                   MpoFlags = 4096
	MpoFlagsWeakReplyPort               MpoFlags = 16384
	MpoFlagsNotificationPort            MpoFlags = 17408
	MpoFlagsExceptionPort               MpoFlags = 32768
	MpoFlagsConnectionPortWithPortArray MpoFlags = 65536
)

func (MpoFlags) String added in v0.17.0 

func (e MpoFlags) String() string

String returns the MpoFlags constant's name, or its numeric form when the value is not a known constant.

type NXMouseButton 

type NXMouseButton int32
const (
	NX_OneButton   NXMouseButton = 0
	NX_LeftButton  NXMouseButton = 1
	NX_RightButton NXMouseButton = 2
)

func (NXMouseButton) String 

func (e NXMouseButton) String() string

String returns the NXMouseButton constant's name, or its numeric form when the value is not a known constant.

type OSClockid added in v0.17.0 

type OSClockid uint32
const (
	OSClockidTime OSClockid = 32
)

func (OSClockid) String added in v0.17.0 

func (e OSClockid) String() string

String returns the OSClockid constant's name, or its numeric form when the value is not a known constant.

type OSUnfairLockFlags added in v0.17.0 

type OSUnfairLockFlags uint32

Bitmask — values may be combined with |. 

const (
	OSUnfairLockFlagsNone         OSUnfairLockFlags = 0
	OSUnfairLockFlagsAdaptiveSpin OSUnfairLockFlags = 262144
)

func (OSUnfairLockFlags) String added in v0.17.0 

func (e OSUnfairLockFlags) String() string

String returns the OSUnfairLockFlags constant's name, or its numeric form when the value is not a known constant.

type PMPageToPaperMappingType 

type PMPageToPaperMappingType int32
const (
	KPMPageToPaperMappingNone       PMPageToPaperMappingType = 1
	KPMPageToPaperMappingScaleToFit PMPageToPaperMappingType = 2
)

func (PMPageToPaperMappingType) String 

func (e PMPageToPaperMappingType) String() string

String returns the PMPageToPaperMappingType constant's name, or its numeric form when the value is not a known constant.

type Perm added in v0.17.0 

type Perm int32
const (
	PermReadData           Perm = 2
	PermListDirectory      Perm = 2
	PermWriteData          Perm = 4
	PermAddFile            Perm = 4
	PermExecute            Perm = 8
	PermSearch             Perm = 8
	PermDelete             Perm = 16
	PermAppendData         Perm = 32
	PermAddSubdirectory    Perm = 32
	PermDeleteChild        Perm = 64
	PermReadAttributes     Perm = 128
	PermWriteAttributes    Perm = 256
	PermReadExtattributes  Perm = 512
	PermWriteExtattributes Perm = 1024
	PermReadSecurity       Perm = 2048
	PermWriteSecurity      Perm = 4096
	PermChangeOwner        Perm = 8192
	PermSynchronize        Perm = 1048576
)

func (Perm) String added in v0.17.0 

func (e Perm) String() string

String returns the Perm constant's name, or its numeric form when the value is not a known constant.

type PtrauthKey added in v0.17.0 

type PtrauthKey int32
const (
	Ptrauth_key_none                     PtrauthKey = -1
	Ptrauth_key_asia                     PtrauthKey = 0
	Ptrauth_key_asib                     PtrauthKey = 1
	Ptrauth_key_asda                     PtrauthKey = 2
	Ptrauth_key_asdb                     PtrauthKey = 3
	Ptrauth_key_process_independent_code PtrauthKey = 0
	Ptrauth_key_process_dependent_code   PtrauthKey = 1
	Ptrauth_key_process_independent_data PtrauthKey = 2
	Ptrauth_key_process_dependent_data   PtrauthKey = 3
	Ptrauth_key_return_address           PtrauthKey = 1
	Ptrauth_key_frame_pointer            PtrauthKey = 3
	Ptrauth_key_function_pointer         PtrauthKey = 0
	Ptrauth_key_block_function           PtrauthKey = 0
	Ptrauth_key_cxx_vtable_pointer       PtrauthKey = 2
	Ptrauth_key_method_list_pointer      PtrauthKey = 2
	Ptrauth_key_objc_isa_pointer         PtrauthKey = 2
	Ptrauth_key_objc_super_pointer       PtrauthKey = 2
	Ptrauth_key_objc_sel_pointer         PtrauthKey = 3
	Ptrauth_key_objc_class_ro_pointer    PtrauthKey = 2
	Ptrauth_key_block_descriptor_pointer PtrauthKey = 2
	Ptrauth_key_init_fini_pointer        PtrauthKey = 0
)

func (PtrauthKey) String added in v0.17.0 

func (e PtrauthKey) String() string

String returns the PtrauthKey constant's name, or its numeric form when the value is not a known constant.

type QosClass added in v0.17.0 

type QosClass uint32
const (
	QosClassUserInteractive QosClass = 33
	QosClassUserInitiated   QosClass = 25
	QosClassDefault         QosClass = 21
	QosClassUtility         QosClass = 17
	QosClassBackground      QosClass = 9
	QosClassUnspecified     QosClass = 0
)

func (QosClass) String added in v0.17.0 

func (e QosClass) String() string

String returns the QosClass constant's name, or its numeric form when the value is not a known constant.

type Tag added in v0.17.0 

type Tag int32
const (
	TagUndefinedTag  Tag = 0
	TagExtendedAllow Tag = 1
	TagExtendedDeny  Tag = 2
)

func (Tag) String added in v0.17.0 

func (e Tag) String() string

String returns the Tag constant's name, or its numeric form when the value is not a known constant.

type Type added in v0.17.0 

type Type int32
const (
	TypeExtended Type = 256
	TypeAccess   Type = 0
	TypeDefault  Type = 1
	TypeAfs      Type = 2
	TypeCoda     Type = 3
	TypeNtfs     Type = 4
	TypeNwfs     Type = 5
)

func (Type) String added in v0.17.0 

func (e Type) String() string

String returns the Type constant's name, or its numeric form when the value is not a known constant.

type VirtualMemoryGuardExceptionCode added in v0.17.0 

type VirtualMemoryGuardExceptionCode uint32
const (
	KGUARD_EXC_DEALLOC_GAP                   VirtualMemoryGuardExceptionCode = 1
	KGUARD_EXC_RECLAIM_COPYIO_FAILURE        VirtualMemoryGuardExceptionCode = 2
	KGUARD_EXC_RECLAIM_INDEX_FAILURE         VirtualMemoryGuardExceptionCode = 4
	KGUARD_EXC_RECLAIM_DEALLOCATE_FAILURE    VirtualMemoryGuardExceptionCode = 8
	KGUARD_EXC_RECLAIM_ACCOUNTING_FAILURE    VirtualMemoryGuardExceptionCode = 9
	KGUARD_EXC_SEC_IOPL_ON_EXEC_PAGE         VirtualMemoryGuardExceptionCode = 10
	KGUARD_EXC_SEC_EXEC_ON_IOPL_PAGE         VirtualMemoryGuardExceptionCode = 11
	KGUARD_EXC_SEC_UPL_WRITE_ON_EXEC_REGION  VirtualMemoryGuardExceptionCode = 12
	KGUARD_EXC_LARGE_ALLOCATION_TELEMETRY    VirtualMemoryGuardExceptionCode = 13
	KGUARD_EXC_SEC_ACCESS_FAULT              VirtualMemoryGuardExceptionCode = 98
	KGUARD_EXC_SEC_ASYNC_ACCESS_FAULT        VirtualMemoryGuardExceptionCode = 99
	KGUARD_EXC_SEC_COPY_DENIED               VirtualMemoryGuardExceptionCode = 100
	KGUARD_EXC_SEC_SHARING_DENIED            VirtualMemoryGuardExceptionCode = 101
	KGUARD_EXC_MTE_SYNC_FAULT                VirtualMemoryGuardExceptionCode = 200
	KGUARD_EXC_MTE_ASYNC_USER_FAULT          VirtualMemoryGuardExceptionCode = 201
	KGUARD_EXC_MTE_ASYNC_KERN_FAULT          VirtualMemoryGuardExceptionCode = 202
	KGUARD_EXC_GUARD_OBJECT_ASYNC_USER_FAULT VirtualMemoryGuardExceptionCode = 203
	KGUARD_EXC_GUARD_OBJECT_ASYNC_KERN_FAULT VirtualMemoryGuardExceptionCode = 204
)

func (VirtualMemoryGuardExceptionCode) String added in v0.17.0 

func (e VirtualMemoryGuardExceptionCode) String() string

String returns the VirtualMemoryGuardExceptionCode constant's name, or its numeric form when the value is not a known constant.

type XpcListenerCreateFlags added in v0.17.0 

type XpcListenerCreateFlags uint64

Bitmask — values may be combined with |. 

const (
	XpcListenerCreateFlagsNone            XpcListenerCreateFlags = 0
	XpcListenerCreateFlagsInactive        XpcListenerCreateFlags = 1
	XpcListenerCreateFlagsForceMach       XpcListenerCreateFlags = 2
	XpcListenerCreateFlagsForceXpcservice XpcListenerCreateFlags = 4
)

func (XpcListenerCreateFlags) String added in v0.17.0 

func (e XpcListenerCreateFlags) String() string

String returns the XpcListenerCreateFlags constant's name, or its numeric form when the value is not a known constant.

type XpcSessionCreateFlags added in v0.17.0 

type XpcSessionCreateFlags uint64

Bitmask — values may be combined with |. 

const (
	XpcSessionCreateFlagsNone           XpcSessionCreateFlags = 0
	XpcSessionCreateFlagsInactive       XpcSessionCreateFlags = 1
	XpcSessionCreateFlagsMachPrivileged XpcSessionCreateFlags = 2
)

func (XpcSessionCreateFlags) String added in v0.17.0 

func (e XpcSessionCreateFlags) String() string

String returns the XpcSessionCreateFlags constant's name, or its numeric form when the value is not a known constant.

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