Tar Delphi DLL Reference Documentation

Tar

Current Version: 9.5.0.97

API for creating and extracting TAR archives. Also supports creating and extracting .tar.gz (.tgz), .tar.bz2, and .tar.Z (compressed TAR archives, also known as compressed tarball archives). Can read/write the following TAR formats: (1) GNU tar 1.13.x format, (2) PAX -- POSIX 1003.1-2001 format, (3) USTAR -- POSIX 1003.1-1988 format.

Create/Dispose

var
myObject: HCkTar;

begin
myObject := CkTar_Create();

// ...

CkTar_Dispose(myObject);
end;
function CkTar_Create: HCkTar; stdcall;

Creates an instance of the HCkTar object and returns a handle (i.e. a Pointer). The handle is passed in the 1st argument for the functions listed on this page.

procedure CkTar_Dispose(handle: HCkTar); stdcall;

Objects created by calling CkTar_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function.

Properties

CaptureXmlListing
function CkTar_getCaptureXmlListing(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putCaptureXmlListing(objHandle: HCkTar; newPropVal: wordbool); stdcall;
Introduced in version 9.5.0.46

If True, then untar methods, such as Untar, UntarGz, UntarBz2, and UntarZ, will also capture an XML listing of the contents in the XmlListing property. The format of the XML contained in XmlListing is identical to what is returned by the ListXml method. The default value is False.

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Charset
procedure CkTar_getCharset(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putCharset(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__charset(objHandle: HCkTar): PWideChar; stdcall;

Character encoding to be used when interpreting filenames within .tar archives for untar operations. The default is "utf-8", and this is typically not changed. (The WriteTar methods always uses utf-8 to store filenames within the TAR archive.)

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DebugLogFilePath
procedure CkTar_getDebugLogFilePath(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putDebugLogFilePath(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__debugLogFilePath(objHandle: HCkTar): PWideChar; stdcall;

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

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DirMode
function CkTar_getDirMode(objHandle: HCkTar): Integer; stdcall;
procedure CkTar_putDirMode(objHandle: HCkTar; newPropVal: Integer); stdcall;

The directory permissions to used in WriteTar* methods. The default is octal 0755. This is the value to be stored in the "mode" field of each TAR header for a directory entries.

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DirPrefix
procedure CkTar_getDirPrefix(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putDirPrefix(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__dirPrefix(objHandle: HCkTar): PWideChar; stdcall;

A prefix to be added to each file's path within the TAR archive as it is being created. For example, if this property is set to the string "subdir1", then "subdir1/" will be prepended to each file's path within the TAR.

Note: This property does not apply to files added using the AddFile2 method, which directly specifies the path-in-tar.

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FileMode
function CkTar_getFileMode(objHandle: HCkTar): Integer; stdcall;
procedure CkTar_putFileMode(objHandle: HCkTar; newPropVal: Integer); stdcall;

The file permissions to used in WriteTar* methods. The default is octal 0644. This is the value to be stored in the "mode" field of each TAR header for a file entries.

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GroupId
function CkTar_getGroupId(objHandle: HCkTar): Integer; stdcall;
procedure CkTar_putGroupId(objHandle: HCkTar; newPropVal: Integer); stdcall;

The default numerical GID to be stored in each TAR header when writing TAR archives. The default value is 1000.

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GroupName
procedure CkTar_getGroupName(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putGroupName(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__groupName(objHandle: HCkTar): PWideChar; stdcall;

The default group name to be stored in each TAR header when writing TAR archives. The default value is the logged-on username of the application's process.

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HeartbeatMs
function CkTar_getHeartbeatMs(objHandle: HCkTar): Integer; stdcall;
procedure CkTar_putHeartbeatMs(objHandle: HCkTar; newPropVal: Integer); stdcall;

This is the number of milliseconds between each AbortCheck event callback. The AbortCheck callback allows an application to abort any TAR operation prior to completion. If HeartbeatMs is 0, no AbortCheck event callbacks will occur.

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LastErrorHtml
procedure CkTar_getLastErrorHtml(objHandle: HCkTar; outPropVal: HCkString); stdcall;
function CkTar__lastErrorHtml(objHandle: HCkTar): PWideChar; stdcall;

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorText
procedure CkTar_getLastErrorText(objHandle: HCkTar; outPropVal: HCkString); stdcall;
function CkTar__lastErrorText(objHandle: HCkTar): PWideChar; stdcall;

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorXml
procedure CkTar_getLastErrorXml(objHandle: HCkTar; outPropVal: HCkString); stdcall;
function CkTar__lastErrorXml(objHandle: HCkTar): PWideChar; stdcall;

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastMethodSuccess
function CkTar_getLastMethodSuccess(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putLastMethodSuccess(objHandle: HCkTar; newPropVal: wordbool); stdcall;

Indicate whether the last method call succeeded or failed. A value of True indicates success, a value of False indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = True and failure = False.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to True. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

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MatchCaseSensitive
function CkTar_getMatchCaseSensitive(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putMatchCaseSensitive(objHandle: HCkTar; newPropVal: wordbool); stdcall;
Introduced in version 9.5.0.46

Determines whether pattern matching for the MustMatch and MustNotMatch properties is case-sensitive or not. The default value is False.

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MustMatch
procedure CkTar_getMustMatch(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putMustMatch(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__mustMatch(objHandle: HCkTar): PWideChar; stdcall;
Introduced in version 9.5.0.46

If set, then file paths must match this pattern when creating TAR archives, or when extracting from TAR archives. If a file does not match, it will not be included when creating a TAR, or it will not be extracted when extracting from a TAR. This property also applies to methods that create or extract from compressed TAR archives.

The must-match pattern may include 0 or more asterisk characters, each of which represents 0 or more of any character. For example, the pattern "*.txt" causes only .txt files to be included or extracted. The default value is an empty string, indicating that all files are implicitly matched.

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MustNotMatch
procedure CkTar_getMustNotMatch(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putMustNotMatch(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__mustNotMatch(objHandle: HCkTar): PWideChar; stdcall;
Introduced in version 9.5.0.46

If set, then file paths must NOT match this pattern when creating TAR archives, or when extracting from TAR archives. If a file path matches, it will not be included when creating a TAR, or it will not be extracted when extracting from a TAR. This property also applies to methods that create or extract from compressed TAR archives.

The must-not-match pattern may include 0 or more asterisk characters, each of which represents 0 or more of any character. For example, the pattern "*.obj" causes all .obj files to be skipped. The default value is an empty string, indicating that no files are skipped.

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NoAbsolutePaths
function CkTar_getNoAbsolutePaths(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putNoAbsolutePaths(objHandle: HCkTar; newPropVal: wordbool); stdcall;

If True, then absolute paths are converted to relative paths by removing the leading "/" or "\" character when untarring. This protects your system from unknowingly untarring files into important system directories, such as C:\Windows\system32. The default value is True.

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NumDirRoots
function CkTar_getNumDirRoots(objHandle: HCkTar): Integer; stdcall;

The total number of directory roots set by calling AddDirRoot (i.e. the number of times AddDirRoot was called by the application). A TAR archive is created by calling AddDirRoot for one or more directory tree roots, followed by a single call to WriteTar (or WriteTarBz2, WriteTarGz, WriteTarZ). This allows for TAR archives containing multiple directory trees to be created.

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PercentDoneScale
function CkTar_getPercentDoneScale(objHandle: HCkTar): Integer; stdcall;
procedure CkTar_putPercentDoneScale(objHandle: HCkTar; newPropVal: Integer); stdcall;
Introduced in version 9.5.0.49

This property is only valid in programming environment and languages that allow for event callbacks.

Sets the value to be defined as 100% complete for the purpose of PercentDone event callbacks. The defaut value of 100 means that at most 100 event PercentDone callbacks will occur in a method that (1) is event enabled and (2) is such that it is possible to measure progress as a percentage completed. This property may be set to larger numbers to get more fine-grained PercentDone callbacks. For example, setting this property equal to 1000 will provide callbacks with .1 percent granularity. For example, a value of 453 would indicate 45.3% competed. This property is clamped to a minimum value of 10, and a maximum value of 100000.

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ScriptFileMode
function CkTar_getScriptFileMode(objHandle: HCkTar): Integer; stdcall;
procedure CkTar_putScriptFileMode(objHandle: HCkTar; newPropVal: Integer); stdcall;

The file permissions to used in WriteTar* methods for shell script files (.sh, .csh, .bash, .bsh). The default is octal 0755. This is the value to be stored in the "mode" field of each TAR header for a file entries.

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SuppressOutput
function CkTar_getSuppressOutput(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putSuppressOutput(objHandle: HCkTar; newPropVal: wordbool); stdcall;
Introduced in version 9.5.0.46

If True, then untar methods, such as Untar, UntarGz, UntarBz2, and UntarZ, do not produce any output. Setting this value equal to True is useful when the CaptureXmlListing is also set to True, which enables an application to get the contents of a TAR archive without extracting. The default value is False.

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UntarCaseSensitive
function CkTar_getUntarCaseSensitive(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putUntarCaseSensitive(objHandle: HCkTar; newPropVal: wordbool); stdcall;

This property is deprecated. Applications should instead use the MatchCaseSensitive property. Until this property is officially removed, it will behave the same as the MatchCaseSensitive property.

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UntarDebugLog
function CkTar_getUntarDebugLog(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putUntarDebugLog(objHandle: HCkTar; newPropVal: wordbool); stdcall;

Similar to the VerboseLogging property. If set to True, then information about each file/directory extracted in an untar method call is logged to LastErrorText (or LastErrorXml / LastErrorHtml). The default value is False.

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UntarDiscardPaths
function CkTar_getUntarDiscardPaths(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putUntarDiscardPaths(objHandle: HCkTar; newPropVal: wordbool); stdcall;

If True, then discard all path information when untarring. This causes all files to be untarred into a single directory. The default value is False.

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UntarFromDir
procedure CkTar_getUntarFromDir(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putUntarFromDir(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__untarFromDir(objHandle: HCkTar): PWideChar; stdcall;

The directory path where files are extracted when untarring. The default value is ".", meaning that the current working directory of the calling process is used. If UntarDiscardPaths is set, then all files are untarred into this directory. Otherwise, the untar operation will re-create a directory tree rooted in this directory.

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UntarMaxCount
function CkTar_getUntarMaxCount(objHandle: HCkTar): Integer; stdcall;
procedure CkTar_putUntarMaxCount(objHandle: HCkTar; newPropVal: Integer); stdcall;

Limits the number of files extracted during an untar to this count. The default value is 0 to indicate no maximum. To untar a single file, one might set the UntarMatchPattern such that it will match only the file to be extracted, and also set UntarMaxCount equal to 1. This causes an untar to scan the TAR archive until it finds the matching file, extract it, and then return.

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UserId
function CkTar_getUserId(objHandle: HCkTar): Integer; stdcall;
procedure CkTar_putUserId(objHandle: HCkTar; newPropVal: Integer); stdcall;

The default numerical UID to be stored in each TAR header when writing TAR archives. The default value is 1000.

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UserName
procedure CkTar_getUserName(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putUserName(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__userName(objHandle: HCkTar): PWideChar; stdcall;

The default user name to be stored in each TAR header when writing TAR archives. The default value is the logged-on username of the application's process.

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VerboseLogging
function CkTar_getVerboseLogging(objHandle: HCkTar): wordbool; stdcall;
procedure CkTar_putVerboseLogging(objHandle: HCkTar; newPropVal: wordbool); stdcall;

If set to True, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is False. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
procedure CkTar_getVersion(objHandle: HCkTar; outPropVal: HCkString); stdcall;
function CkTar__version(objHandle: HCkTar): PWideChar; stdcall;

Version of the component/library, such as "9.5.0.94"

More Information and Examples
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WriteFormat
procedure CkTar_getWriteFormat(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putWriteFormat(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__writeFormat(objHandle: HCkTar): PWideChar; stdcall;

The TAR format to use when writing a TAR archive. Valid values are "gnu", "pax", and "ustar". The default value is "gnu".

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XmlListing
procedure CkTar_getXmlListing(objHandle: HCkTar; outPropVal: HCkString); stdcall;
procedure CkTar_putXmlListing(objHandle: HCkTar; newPropVal: PWideChar); stdcall;
function CkTar__xmlListing(objHandle: HCkTar): PWideChar; stdcall;
Introduced in version 9.5.0.46

Contains the XML listing of the contents of the TAR archive for the last untar method call (such as Untar, UntarGz, etc.) where the CaptureXmlListing property was set to True.

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Methods

AddDirRoot
function CkTar_AddDirRoot(objHandle: HCkTar;
    dirPath: PWideChar): wordbool; stdcall;

Adds a directory tree to be included in the next call to one of the WriteTar* methods. To include multiple directory trees in a .tar, call AddDirRoot multiple times followed by a single call to WriteTar.

Returns True for success, False for failure.

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AddDirRoot2
function CkTar_AddDirRoot2(objHandle: HCkTar;
    rootPrefix: PWideChar;
    rootPath: PWideChar): wordbool; stdcall;
Introduced in version 9.5.0.56

Adds a directory tree to be included in the next call to one of the WriteTar* methods. To include multiple directory trees in a .tar, call AddDirRoot2 (and/or AddDirRoot) multiple times followed by a single call to WriteTar.

The rootPrefix adds a prefix to the path in the TAR for all files added under this root. The rootPrefix should not end with a forward-slash char. For example: This is good: "abc/123", but this is not good: "abc/123/". If the DirPrefix property is also set, its prefix will added first.

Returns True for success, False for failure.

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AddFile
function CkTar_AddFile(objHandle: HCkTar;
    path: PWideChar): wordbool; stdcall;
Introduced in version 9.5.0.46

Adds a local file to be included in the next call to one of the WriteTar* methods. To include multiple files or directory trees in a .tar, call AddFile/AddDirRoot multiple times followed by a single call to WriteTar (or WriteTarGz, or WriteTarBz2).

Returns True for success, False for failure.

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AddFile2
function CkTar_AddFile2(objHandle: HCkTar;
    filePath: PWideChar;
    pathWithinTar: PWideChar): wordbool; stdcall;
Introduced in version 9.5.0.69

Adds a local file to be included in the next call to one of the WriteTar* methods. Allows for the path within the TAR to be specified. To include multiple files or directory trees in a .tar, call AddFile/AddFile2/AddDirRoot multiple times followed by a single call to WriteTar (or WriteTarGz, or WriteTarBz2).

Note: The DirPrefix property does not apply to files added via this method because this method explicilty specifies the path-in-tar.

Returns True for success, False for failure.

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ClearDirRootsAndFiles
function CkTar_ClearDirRootsAndFiles(objHandle: HCkTar): wordbool; stdcall;
Introduced in version 9.5.0.84

Clears all directory roots and files previously added by calls to AddDirRoot, AddDirRoot2, AddFile, and AddFile2.

Returns True for success, False for failure.

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CreateDeb
function CkTar_CreateDeb(objHandle: HCkTar;
    controlPath: PWideChar;
    dataPath: PWideChar;
    debPath: PWideChar): wordbool; stdcall;
Introduced in version 9.5.0.66

Creates a .deb Debian binary package archive from a control.tar.gz and data.tar.gz. The controlPath is the path to the control.tar.gz file (or equivalent), and the dataPath is the path to the data.tar.gz file. The output file path (.deb) is specified in debPath.

Returns True for success, False for failure.

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GetDirRoot
function CkTar_GetDirRoot(objHandle: HCkTar;
    index: Integer;
    outStr: HCkString): wordbool; stdcall;
function CkTar__getDirRoot(objHandle: HCkTar;
    index: Integer): PWideChar; stdcall;

Returns the value of the Nth directory root. For example, if an application calls AddDirRoot twice, then the NumDirRoots property would have a value of 2, and GetDirRoot(0) would return the path passed to AddDirRoot in the 1st call, and GetDirRoot(1) would return the directory path in the 2nd call to AddDirRoot.

Returns True for success, False for failure.

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ListXml
function CkTar_ListXml(objHandle: HCkTar;
    tarPath: PWideChar;
    outStr: HCkString): wordbool; stdcall;
function CkTar__listXml(objHandle: HCkTar;
    tarPath: PWideChar): PWideChar; stdcall;

Scans a TAR archive and returns XML detailing the files and directories found within the TAR.

Returns True for success, False for failure.

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ListXmlAsync (1)
function CkTar_ListXmlAsync(objHandle: HCkTar;
    tarPath: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the ListXml method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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LoadTaskCaller
function CkTar_LoadTaskCaller(objHandle: HCkTar;
    task: HCkTask): wordbool; stdcall;
Introduced in version 9.5.0.80

Loads the caller of the task's async method.

Returns True for success, False for failure.

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Untar
function CkTar_Untar(objHandle: HCkTar;
    tarPath: PWideChar): Integer; stdcall;

Extracts the files and directories from a TAR archive, reconstructing the directory tree(s) in the local filesystem. The files are extracted to the directory specified by the UntarFromDir property. Returns the number of files and directories extracted, or -1 for failure.

More Information and Examples
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UntarAsync (1)
function CkTar_UntarAsync(objHandle: HCkTar;
    tarPath: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the Untar method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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UntarBz2
function CkTar_UntarBz2(objHandle: HCkTar;
    tarPath: PWideChar): wordbool; stdcall;

Extracts the files and directories from a tar.bz2 (or tar.bzip2) archive, reconstructing the directory tree(s) in the local filesystem. The files are extracted to the directory specified by the UntarFromDir property.

Returns True for success, False for failure.

More Information and Examples
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UntarBz2Async (1)
function CkTar_UntarBz2Async(objHandle: HCkTar;
    tarPath: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the UntarBz2 method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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UntarFirstMatchingToBd
function CkTar_UntarFirstMatchingToBd(objHandle: HCkTar;
    tarPath: PWideChar;
    matchPattern: PWideChar;
    bd: HCkBinData): wordbool; stdcall;
Introduced in version 9.5.0.82

Untars the first file matching the matchPattern into bd.

Returns True for success, False for failure.

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UntarFirstMatchingToMemory
function CkTar_UntarFirstMatchingToMemory(objHandle: HCkTar;
    tarFileBytes: HCkByteData;
    matchPattern: PWideChar;
    outBytes: HCkByteData): wordbool; stdcall;

Memory-to-memory untar. The first file matching the matchPattern is extracted and returned.

Returns True for success, False for failure.

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UntarFromMemory
function CkTar_UntarFromMemory(objHandle: HCkTar;
    tarFileBytes: HCkByteData): Integer; stdcall;

Extracts the files and directories from an in-memory TAR archive, reconstructing the directory tree(s) in the local filesystem. The files are extracted to the directory specified by the UntarFromDir property. Returns the number of files and directories extracted, or -1 for failure.

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UntarFromMemoryAsync (1)
function CkTar_UntarFromMemoryAsync(objHandle: HCkTar;
    tarFileBytes: HCkByteData): HCkTask; stdcall;

Creates an asynchronous task to call the UntarFromMemory method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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UntarGz
function CkTar_UntarGz(objHandle: HCkTar;
    tarPath: PWideChar): wordbool; stdcall;

Extracts the files and directories from a tar.gz (or tar.gzip) archive, reconstructing the directory tree(s) in the local filesystem. The files are extracted to the directory specified by the UntarFromDir property.

Returns True for success, False for failure.

More Information and Examples
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UntarGzAsync (1)
function CkTar_UntarGzAsync(objHandle: HCkTar;
    tarPath: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the UntarGz method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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UntarZ
function CkTar_UntarZ(objHandle: HCkTar;
    tarPath: PWideChar): wordbool; stdcall;

Extracts the files and directories from a tar.Z archive, reconstructing the directory tree(s) in the local filesystem. The files are extracted to the directory specified by the UntarFromDir property.

Returns True for success, False for failure.

More Information and Examples
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UntarZAsync (1)
function CkTar_UntarZAsync(objHandle: HCkTar;
    tarPath: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the UntarZ method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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VerifyTar
function CkTar_VerifyTar(objHandle: HCkTar;
    tarPath: PWideChar): wordbool; stdcall;

Verifies that a TAR archive is valid. This method opens the TAR archive and scans the entire file by walking the TAR headers. Returns True if no errors were found. Otherwise returns False.

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VerifyTarAsync (1)
function CkTar_VerifyTarAsync(objHandle: HCkTar;
    tarPath: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the VerifyTar method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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WriteTar
function CkTar_WriteTar(objHandle: HCkTar;
    tarPath: PWideChar): wordbool; stdcall;

Writes a TAR archive. The directory trees previously added by calling AddDirRoot one or more times are included in the output TAR archive.

Returns True for success, False for failure.

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WriteTarAsync (1)
function CkTar_WriteTarAsync(objHandle: HCkTar;
    tarPath: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the WriteTar method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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WriteTarBz2
function CkTar_WriteTarBz2(objHandle: HCkTar;
    bz2Path: PWideChar): wordbool; stdcall;

Writes a .tar.bz2 compressed TAR archive. The directory trees previously added by calling AddDirRoot one or more times are included in the output file.

Returns True for success, False for failure.

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WriteTarBz2Async (1)
function CkTar_WriteTarBz2Async(objHandle: HCkTar;
    bz2Path: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the WriteTarBz2 method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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WriteTarGz
function CkTar_WriteTarGz(objHandle: HCkTar;
    gzPath: PWideChar): wordbool; stdcall;

Writes a .tar.gz (also known as .tgz) compressed TAR archive. The directory trees previously added by calling AddDirRoot one or more times are included in the output file.

Returns True for success, False for failure.

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WriteTarGzAsync (1)
function CkTar_WriteTarGzAsync(objHandle: HCkTar;
    gzPath: PWideChar): HCkTask; stdcall;

Creates an asynchronous task to call the WriteTarGz method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Note: Async method event callbacks happen in the background thread. Accessing and updating UI elements existing in the main thread may require special considerations.

Returns nil on failure

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Events

Chilkat supports event callbacks for the Delphi DLL starting in version 9.5.0.82.

AbortCheck
function MyAbortCheck(): Integer; cdecl;
Introduced in version 9.5.0.82

Provides the opportunity for a method call to be aborted. The AbortCheck event is fired periodically based on the value of the HeartbeatMs property. If HeartbeatMs is 0, then no AbortCheck events will fire. As an example, to fire 5 AbortCheck events per second, set the HeartbeatMs property equal to 200. Return True to abort; return False to continue (not abort)

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PercentDone
function MyPercentDone(pctDone: Integer): Integer; cdecl;
Introduced in version 9.5.0.82

Provides the percentage completed for any method that involves network communications or time-consuming processing (assuming it is a method where a percentage completion can be measured). This event is only fired when it is possible to know a percentage completion, and when it makes sense to express the operation as a percentage completed. The pctDone argument will have a value from 1 to 100. For operations (Chilkat method calls) that complete very quickly, the number of PercentDone callbacks will vary, but the final callback should have a value of 100. For long running operations, no more than one callback per percentage point will occur (for example: 1, 2, 3, ... 98, 99, 100).

The PercentDone callback counts as an AbortCheck event. For method calls that complete quickly such that PercentDone events fire, it may be that AbortCheck events don't fire because the opportunity to abort is already provided in the PercentDone callback. For time consuming operations, where the amount of time between PercentDone callbacks are long, AbortCheck callbacks may be used to allow for the operation to be aborted in a more responsive manner.

Return True to abort; return False to continue (not abort)

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ProgressInfo
procedure MyProgressInfo(name: PWideChar; value: PWideChar) cdecl;
Introduced in version 9.5.0.82

A general name/value event that provides information about what is happening during a method call. To find out what information is available, write code to handle this event and log the name/value pairs. Most are self-explanatory.

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TaskCompleted
procedure MyTaskCompleted(task: HCkTask) cdecl;
Introduced in version 9.5.0.82

Called in the background thread when an asynchronous task completes.

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