Compression Tcl Reference Documentation

Compression

Data compression component implementing the PPMD, Bzip2, Deflate, and LZW compression algorithms. .NET, ActiveX, and C++ implementations provide progress monitoring and abort capabilities. Provides a unified API for all supported compression algorithms.

Object Creation

set myCompression [new CkCompression]

Properties

Algorithm (string)

# ckStr is a CkString
CkCompression_get_Algorithm $myCompression $ckStr
set strVal [CkCompression_get_algorithm $myCompression]
CkCompression_put_Algorithm $myCompression $strVal

The compression algorithm to be used. Should be set to either "ppmd", "deflate", "zlib", "bzip2", or "lzw".

Note: The PPMD compression algorithm is only available for 32-bit builds. It is not available for 64-bit implementations. Also, this PPMD implementation is the "J" variant.

Charset (string)

# ckStr is a CkString
CkCompression_get_Charset $myCompression $ckStr
set strVal [CkCompression_get_charset $myCompression]
CkCompression_put_Charset $myCompression $strVal

Only applies to methods that compress or decompress strings. This specifies the character encoding that the string should be converted to before compression. Many programming languages use Unicode (2 bytes per char) for representing characters. This property allows for the string to be converted to a 1-byte per char encoding prior to compression.

DebugLogFilePath (string)

# ckStr is a CkString
CkCompression_get_DebugLogFilePath $myCompression $ckStr
set strVal [CkCompression_get_debugLogFilePath $myCompression]
CkCompression_put_DebugLogFilePath $myCompression $strVal

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.

EncodingMode (string)

# ckStr is a CkString
CkCompression_get_EncodingMode $myCompression $ckStr
set strVal [CkCompression_get_encodingMode $myCompression]
CkCompression_put_EncodingMode $myCompression $strVal

Controls the encoding expected by methods ending in "ENC", such as CompressBytesENC. Valid values are "base64", "hex", "url", and "quoted-printable". Compression methods ending in ENC return the binary compressed data as an encoded string using this encoding. Decompress methods expect the input string to be this encoding.

LastErrorHtml (string)

# ckStr is a CkString
CkCompression_get_LastErrorHtml $myCompression $ckStr
set strVal [CkCompression_get_lastErrorHtml $myCompression]

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.

LastErrorText (string)

# ckStr is a CkString
CkCompression_get_LastErrorText $myCompression $ckStr
set strVal [CkCompression_get_lastErrorText $myCompression]

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.

Concept of LastErrorText

LastErrorText Standard Information

LastErrorXml (string)

# ckStr is a CkString
CkCompression_get_LastErrorXml $myCompression $ckStr
set strVal [CkCompression_get_lastErrorXml $myCompression]

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.

LastMethodSuccess (boolean 1/0)

set boolVal [CkCompression_get_LastMethodSuccess $myCompression]
CkCompression_put_LastMethodSuccess $myCompression $boolVal

Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of 1 indicates success, a value of 0 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 = 1 and failure = 0.
  • 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 1. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

Utf8 (boolean 1/0)

set boolVal [CkCompression_get_Utf8 $myCompression]
CkCompression_put_Utf8 $myCompression $boolVal

When set to 1, all "const char *" arguments are interpreted as utf-8 strings. If set to 0 (the default), then "const char *" arguments are interpreted as ANSI strings. Also, when set to 1, and Chilkat method returning a "const char *" is returning the utf-8 representation. If set to 0, all "const char *" return values are ANSI strings.

VerboseLogging (boolean 1/0)

set boolVal [CkCompression_get_VerboseLogging $myCompression]
CkCompression_put_VerboseLogging $myCompression $boolVal

If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

Version (string)

# ckStr is a CkString
CkCompression_get_Version $myCompression $ckStr
set strVal [CkCompression_get_version $myCompression]

Version of the component/library, such as "9.5.0.63"

Methods

# data is a CkByteData
# outData is a CkByteData (output)
set status [CkCompression_BeginCompressBytes $data $outData]

Large amounts of binary byte data may be compressed in chunks by first calling BeginCompressBytes, followed by 0 or more calls to MoreCompressedBytes, and ending with a final call to EndCompressBytes. Each call returns 0 or more bytes of compressed data which may be output to a compressed data stream (such as a file, socket, etc.).

Returns 1 for success, 0 for failure.

Compress Large Binary File in Blocks

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_BeginCompressBytesAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outStr is a CkString (output)
set status [CkCompression_BeginCompressBytesENC $data $outStr]
set retStr [CkCompression_beginCompressBytesENC $myCompression $data]

Large amounts of binary byte data may be compressed in chunks by first calling BeginCompressBytesENC, followed by 0 or more calls to MoreCompressedBytesENC, and ending with a final call to EndCompressBytesENC. Each call returns 0 or more characters of compressed data (encoded as a string according to the EncodingMode property setting) which may be output to a compressed data stream (such as a file, socket, etc.).

Returns 1 for success, 0 for failure.

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_BeginCompressBytesENCAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outData is a CkByteData (output)
set status [CkCompression_BeginCompressString $str $outData]

Large amounts of string data may be compressed in chunks by first calling BeginCompressString, followed by 0 or more calls to MoreCompressedString, and ending with a final call to EndCompressString. Each call returns 0 or more bytes of compressed data which may be output to a compressed data stream (such as a file, socket, etc.).

Returns 1 for success, 0 for failure.

Compress Text Feed to Binary

# returns a CkTask
# str is a string
set ret_task [CkCompression_BeginCompressStringAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outStr is a CkString (output)
set status [CkCompression_BeginCompressStringENC $str $outStr]
set retStr [CkCompression_beginCompressStringENC $myCompression $str]

Large amounts of string data may be compressed in chunks by first calling BeginCompressStringENC, followed by 0 or more calls to MoreCompressedStringENC, and ending with a final call to EndCompressStringENC. Each call returns 0 or more characters of compressed data (encoded as a string according to the EncodingMode property setting) which may be output to a compressed data stream (such as a file, socket, etc.).

Returns 1 for success, 0 for failure.

Compress String Feed to Base64

# returns a CkTask
# str is a string
set ret_task [CkCompression_BeginCompressStringENCAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outData is a CkByteData (output)
set status [CkCompression_BeginDecompressBytes $data $outData]

A compressed data stream may be decompressed in chunks by first calling BeginDecompressBytes, followed by 0 or more calls to MoreDecompressedBytes, and ending with a final call to EndDecompressBytes. Each call returns 0 or more bytes of decompressed data.

Returns 1 for success, 0 for failure.

Decompress Large Binary File in Blocks

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_BeginDecompressBytesAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outData is a CkByteData (output)
set status [CkCompression_BeginDecompressBytesENC $str $outData]

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

A compressed data stream may be decompressed in chunks by first calling BeginDecompressBytesENC, followed by 0 or more calls to MoreDecompressedBytesENC, and ending with a final call to EndDecompressBytesENC. Each call returns 0 or more bytes of decompressed data.

Returns 1 for success, 0 for failure.

# returns a CkTask
# str is a string
set ret_task [CkCompression_BeginDecompressBytesENCAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outStr is a CkString (output)
set status [CkCompression_BeginDecompressString $data $outStr]
set retStr [CkCompression_beginDecompressString $myCompression $data]

A compressed data stream may be decompressed in chunks by first calling BeginDecompressString, followed by 0 or more calls to MoreDecompressedString, and ending with a final call to EndDecompressString. Each call returns 0 or more characters of decompressed text.

Returns 1 for success, 0 for failure.

Decompress Large Text File in Blocks

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_BeginDecompressStringAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outStr is a CkString (output)
set status [CkCompression_BeginDecompressStringENC $str $outStr]
set retStr [CkCompression_beginDecompressStringENC $myCompression $str]

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

A compressed data stream may be decompressed in chunks by first calling BeginDecompressStringENC, followed by 0 or more calls to MoreDecompressedStringENC, and ending with a final call to EndDecompressStringENC. Each call returns 0 or more characters of decompressed text.

Returns 1 for success, 0 for failure.

# returns a CkTask
# str is a string
set ret_task [CkCompression_BeginDecompressStringENCAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# binData is a CkBinData
set status [CkCompression_CompressBd $binData]

Introduced in version 9.5.0.66

Compresses the data contained in a BinData object.

Returns 1 for success, 0 for failure.

Compress and Decompress Base64

Compress and Decompress Hex String

# returns a CkTask
# binData is a CkBinData
set ret_task [CkCompression_CompressBdAsync $binData]

Introduced in version 9.5.0.66

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outData is a CkByteData (output)
set status [CkCompression_CompressBytes $data $outData]

Compresses byte data.

Returns 1 for success, 0 for failure.

Compress Bytes

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_CompressBytesAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outStr is a CkString (output)
set status [CkCompression_CompressBytesENC $data $outStr]
set retStr [CkCompression_compressBytesENC $myCompression $data]

Compresses bytes and returns the compressed data encoded to a string. The encoding (hex, base64, etc.) is determined by the EncodingMode property setting.

Returns 1 for success, 0 for failure.

Compress Bytes to Base64 (or any other encoding)

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_CompressBytesENCAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# srcPath is a string
# destPath is a string
set status [CkCompression_CompressFile $srcPath $destPath]

Performs file-to-file compression. Files of any size may be compressed because the file is compressed internally in streaming mode.

Returns 1 for success, 0 for failure.

Compress and Decompress a File

# returns a CkTask
# srcPath is a string
# destPath is a string
set ret_task [CkCompression_CompressFileAsync $srcPath $destPath]

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

Returns NULL on failure

How to Run an Asynchronous Task

# strm is a CkStream
set status [CkCompression_CompressStream $strm]

Introduced in version 9.5.0.56

Compresses a stream. Internally, the strm's source is read, compressed, and the compressed data written to the strm's sink. It does this in streaming fashion. Extremely large or even infinite streams can be compressed with stable ungrowing memory usage.

Returns 1 for success, 0 for failure.

Streaming Compression

# returns a CkTask
# strm is a CkStream
set ret_task [CkCompression_CompressStreamAsync $strm]

Introduced in version 9.5.0.56

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outData is a CkByteData (output)
set status [CkCompression_CompressString $str $outData]

Compresses a string.

Returns 1 for success, 0 for failure.

Compress and Decompress a String

# returns a CkTask
# str is a string
set ret_task [CkCompression_CompressStringAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outStr is a CkString (output)
set status [CkCompression_CompressStringENC $str $outStr]
set retStr [CkCompression_compressStringENC $myCompression $str]

Compresses a string and returns the compressed data encoded to a string. The output encoding (hex, base64, etc.) is determined by the EncodingMode property setting.

Returns 1 for success, 0 for failure.

Compress and Decompress a String

# returns a CkTask
# str is a string
set ret_task [CkCompression_CompressStringENCAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# binData is a CkBinData
set status [CkCompression_DecompressBd $binData]

Introduced in version 9.5.0.66

Decompresses the data contained in a BinData object.

Returns 1 for success, 0 for failure.

Compress and Decompress Base64

Compress and Decompress Hex String

# returns a CkTask
# binData is a CkBinData
set ret_task [CkCompression_DecompressBdAsync $binData]

Introduced in version 9.5.0.66

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outData is a CkByteData (output)
set status [CkCompression_DecompressBytes $data $outData]

The opposite of CompressBytes.

Returns 1 for success, 0 for failure.

Decompress Bytes

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_DecompressBytesAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# encodedCompressedData is a string
# outData is a CkByteData (output)
set status [CkCompression_DecompressBytesENC $encodedCompressedData $outData]

The opposite of CompressBytesENC. encodedCompressedData contains the compressed data as an encoded string (hex, base64, etc) as specified by the EncodingMode property setting.

Returns 1 for success, 0 for failure.

Compress Bytes to Base64 (or any other encoding)

# returns a CkTask
# encodedCompressedData is a string
set ret_task [CkCompression_DecompressBytesENCAsync $encodedCompressedData]

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

Returns NULL on failure

How to Run an Asynchronous Task

# srcPath is a string
# destPath is a string
set status [CkCompression_DecompressFile $srcPath $destPath]

Performs file-to-file decompression (the opposite of CompressFile). Internally the file is decompressed in streaming mode which allows files of any size to be decompressed.

Returns 1 for success, 0 for failure.

Compress and Decompress a File

# returns a CkTask
# srcPath is a string
# destPath is a string
set ret_task [CkCompression_DecompressFileAsync $srcPath $destPath]

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

Returns NULL on failure

How to Run an Asynchronous Task

# strm is a CkStream
set status [CkCompression_DecompressStream $strm]

Introduced in version 9.5.0.56

Decompresses a stream. Internally, the strm's source is read, decompressed, and the decompressed data written to the strm's sink. It does this in streaming fashion. Extremely large or even infinite streams can be decompressed with stable ungrowing memory usage.

Returns 1 for success, 0 for failure.

Streaming Compression

# returns a CkTask
# strm is a CkStream
set ret_task [CkCompression_DecompressStreamAsync $strm]

Introduced in version 9.5.0.56

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outStr is a CkString (output)
set status [CkCompression_DecompressString $data $outStr]
set retStr [CkCompression_decompressString $myCompression $data]

Takes compressed bytes, decompresses, and returns the resulting string.

Returns 1 for success, 0 for failure.

Compress and Decompress a String

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_DecompressStringAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# encodedCompressedData is a string
# outStr is a CkString (output)
set status [CkCompression_DecompressStringENC $encodedCompressedData $outStr]
set retStr [CkCompression_decompressStringENC $myCompression $encodedCompressedData]

The opposite of CompressStringENC. encodedCompressedData contains the compressed data as an encoded string (hex, base64, etc) as specified by the EncodingMode property setting.

Returns 1 for success, 0 for failure.

Compress and Decompress a String

# returns a CkTask
# encodedCompressedData is a string
set ret_task [CkCompression_DecompressStringENCAsync $encodedCompressedData]

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

Returns NULL on failure

How to Run an Asynchronous Task

# outData is a CkByteData (output)
set status [CkCompression_EndCompressBytes $outData]

Must be callled to finalize a compression stream. Returns any remaining (buffered) compressed data.

(See BeginCompressBytes)

Returns 1 for success, 0 for failure.

Compress Large Binary File in Blocks

# returns a CkTask
set ret_task [CkCompression_EndCompressBytesAsync]

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

Returns NULL on failure

How to Run an Asynchronous Task

# outStr is a CkString (output)
set status [CkCompression_EndCompressBytesENC $outStr]
set retStr [CkCompression_endCompressBytesENC $myCompression]

Must be callled to finalize a compression stream. Returns any remaining (buffered) compressed data.

(See BeginCompressBytesENC)

Returns 1 for success, 0 for failure.

# returns a CkTask
set ret_task [CkCompression_EndCompressBytesENCAsync]

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

Returns NULL on failure

How to Run an Asynchronous Task

# outData is a CkByteData (output)
set status [CkCompression_EndCompressString $outData]

Must be callled to finalize a compression stream. Returns any remaining (buffered) compressed data.

(See BeginCompressString)

Returns 1 for success, 0 for failure.

Compress Text Feed to Binary

# returns a CkTask
set ret_task [CkCompression_EndCompressStringAsync]

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

Returns NULL on failure

How to Run an Asynchronous Task

# outStr is a CkString (output)
set status [CkCompression_EndCompressStringENC $outStr]
set retStr [CkCompression_endCompressStringENC $myCompression]

Must be callled to finalize a compression stream. Returns any remaining (buffered) compressed data.

(See BeginCompressStringENC)

Returns 1 for success, 0 for failure.

Compress String Feed to Base64

# returns a CkTask
set ret_task [CkCompression_EndCompressStringENCAsync]

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

Returns NULL on failure

How to Run an Asynchronous Task

# outData is a CkByteData (output)
set status [CkCompression_EndDecompressBytes $outData]

Called to finalize the decompression stream and return any remaining (buffered) decompressed data.

(See BeginDecompressBytes)

Returns 1 for success, 0 for failure.

Decompress Large Binary File in Blocks

# returns a CkTask
set ret_task [CkCompression_EndDecompressBytesAsync]

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

Returns NULL on failure

How to Run an Asynchronous Task

# outData is a CkByteData (output)
set status [CkCompression_EndDecompressBytesENC $outData]

Called to finalize the decompression stream and return any remaining (buffered) decompressed data.

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

(See BeginDecompressBytesENC)

Returns 1 for success, 0 for failure.

# returns a CkTask
set ret_task [CkCompression_EndDecompressBytesENCAsync]

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

Returns NULL on failure

How to Run an Asynchronous Task

# outStr is a CkString (output)
set status [CkCompression_EndDecompressString $outStr]
set retStr [CkCompression_endDecompressString $myCompression]

Called to finalize the decompression stream and return any remaining (buffered) decompressed data.

(See BeginDecompressString)

Returns 1 for success, 0 for failure.

Decompress Large Text File in Blocks

# returns a CkTask
set ret_task [CkCompression_EndDecompressStringAsync]

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

Returns NULL on failure

How to Run an Asynchronous Task

# outStr is a CkString (output)
set status [CkCompression_EndDecompressStringENC $outStr]
set retStr [CkCompression_endDecompressStringENC $myCompression]

Called to finalize the decompression stream and return any remaining (buffered) decompressed data.

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

(See BeginDecompressStringENC)

Returns 1 for success, 0 for failure.

# returns a CkTask
set ret_task [CkCompression_EndDecompressStringENCAsync]

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outData is a CkByteData (output)
set status [CkCompression_MoreCompressBytes $data $outData]

(See BeginCompressBytes)

Returns 1 for success, 0 for failure.

Compress Large Binary File in Blocks

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_MoreCompressBytesAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outStr is a CkString (output)
set status [CkCompression_MoreCompressBytesENC $data $outStr]
set retStr [CkCompression_moreCompressBytesENC $myCompression $data]

(See BeginCompressBytesENC)

Returns 1 for success, 0 for failure.

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_MoreCompressBytesENCAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outData is a CkByteData (output)
set status [CkCompression_MoreCompressString $str $outData]

(See BeginCompressString)

Returns 1 for success, 0 for failure.

Compress Text Feed to Binary

# returns a CkTask
# str is a string
set ret_task [CkCompression_MoreCompressStringAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outStr is a CkString (output)
set status [CkCompression_MoreCompressStringENC $str $outStr]
set retStr [CkCompression_moreCompressStringENC $myCompression $str]

(See BeginCompressStringENC)

Returns 1 for success, 0 for failure.

Compress String Feed to Base64

# returns a CkTask
# str is a string
set ret_task [CkCompression_MoreCompressStringENCAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outData is a CkByteData (output)
set status [CkCompression_MoreDecompressBytes $data $outData]

(See BeginDecompressBytes)

Returns 1 for success, 0 for failure.

Decompress Large Binary File in Blocks

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_MoreDecompressBytesAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outData is a CkByteData (output)
set status [CkCompression_MoreDecompressBytesENC $str $outData]

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

(See BeginDecompressBytesENC)

Returns 1 for success, 0 for failure.

# returns a CkTask
# str is a string
set ret_task [CkCompression_MoreDecompressBytesENCAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# data is a CkByteData
# outStr is a CkString (output)
set status [CkCompression_MoreDecompressString $data $outStr]
set retStr [CkCompression_moreDecompressString $myCompression $data]

(See BeginDecompressString)

Returns 1 for success, 0 for failure.

Decompress Large Text File in Blocks

# returns a CkTask
# data is a CkByteData
set ret_task [CkCompression_MoreDecompressStringAsync $data]

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

Returns NULL on failure

How to Run an Asynchronous Task

# str is a string
# outStr is a CkString (output)
set status [CkCompression_MoreDecompressStringENC $str $outStr]
set retStr [CkCompression_moreDecompressStringENC $myCompression $str]

The input to this method is an encoded string containing compressed data. The EncodingMode property should be set prior to calling this method. The input string is decoded according to the EncodingMode (hex, base64, etc.) and then decompressed.

(See BeginDecompressStringENC)

Returns 1 for success, 0 for failure.

# returns a CkTask
# str is a string
set ret_task [CkCompression_MoreDecompressStringENCAsync $str]

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

Returns NULL on failure

How to Run an Asynchronous Task

# path is a string
set status [CkCompression_SaveLastError $path]

Saves the last-error information (the contents of LastErrorXml) to an XML formatted file.

Returns 1 for success, 0 for failure.

# unlockCode is a string
set status [CkCompression_UnlockComponent $unlockCode]

Unlocks the component allowing for the full functionality to be used. The component may be used fully-functional for the 1st 30-days after download by passing an arbitrary string to this method. If for some reason you do not receive the full 30-day trial, send email to support@chilkatsoft.com for a temporary unlock code w/ an explicit expiration date. Upon purchase, a purchased unlock code is provided which should replace the temporary/arbitrary string passed to this method.

Returns 1 for success, 0 for failure.

Diagnosing UnlockComponent Problems

UnlockComponent LastErrorText shows exact string passed to it.

Verify UnlockComponent Success w/ Permanent Unlock Code

LastErrorText Standard Information