Bz2 Tcl Reference Documentation

Bz2

Provides the ability to create and unzip .bz2 compressed files using the BZip2 compression algorithm.

Object Creation

set myBz2 [new CkBz2]

Properties

AbortCurrent (boolean 1/0)

set boolVal [CkBz2_get_AbortCurrent $myBz2]
CkBz2_put_AbortCurrent $myBz2 $boolVal

Introduced in version 9.5.0.58

When set to 1, causes the currently running method to abort. Methods that always finish quickly (i.e.have no length file operations or network communications) are not affected. If no method is running, then this property is automatically reset to 0 when the next method is called. When the abort occurs, this property is reset to 0. Both synchronous and asynchronous method calls can be aborted. (A synchronous method call could be aborted by setting this property from a separate thread.)

DebugLogFilePath (string)

# ckStr is a CkString
CkBz2_get_DebugLogFilePath $myBz2 $ckStr
set strVal [CkBz2_get_debugLogFilePath $myBz2]
CkBz2_put_DebugLogFilePath $myBz2 $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.

LastErrorHtml (string)

# ckStr is a CkString
CkBz2_get_LastErrorHtml $myBz2 $ckStr
set strVal [CkBz2_get_lastErrorHtml $myBz2]

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
CkBz2_get_LastErrorText $myBz2 $ckStr
set strVal [CkBz2_get_lastErrorText $myBz2]

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
CkBz2_get_LastErrorXml $myBz2 $ckStr
set strVal [CkBz2_get_lastErrorXml $myBz2]

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 [CkBz2_get_LastMethodSuccess $myBz2]
CkBz2_put_LastMethodSuccess $myBz2 $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 [CkBz2_get_Utf8 $myBz2]
CkBz2_put_Utf8 $myBz2 $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 [CkBz2_get_VerboseLogging $myBz2]
CkBz2_put_VerboseLogging $myBz2 $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
CkBz2_get_Version $myBz2 $ckStr
set strVal [CkBz2_get_version $myBz2]

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

Methods

# inFilename is a string
# toPath is a string
set status [CkBz2_CompressFile $inFilename $toPath]

Compresses a file to create a BZip2 compressed file (.bz2).

Returns 1 for success, 0 for failure.

# returns a CkTask
# inFilename is a string
# toPath is a string
set ret_task [CkBz2_CompressFileAsync $inFilename $toPath]

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

# inFilename is a string
# outBytes is a CkByteData (output)
set status [CkBz2_CompressFileToMem $inFilename $outData]

BZip2 compresses a file to an in-memory image of a .bz2 file.

Returns 1 for success, 0 for failure.

# returns a CkTask
# inFilename is a string
set ret_task [CkBz2_CompressFileToMemAsync $inFilename]

Creates an asynchronous task to call the CompressFileToMem 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

# inData is a CkByteData
# outBytes is a CkByteData (output)
set status [CkBz2_CompressMemory $inData $outData]

Compresses in-memory data to an in-memory image of a .bz2 file.

Returns 1 for success, 0 for failure.

# returns a CkTask
# inData is a CkByteData
set ret_task [CkBz2_CompressMemoryAsync $inData]

Creates an asynchronous task to call the CompressMemory 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

# inData is a CkByteData
# toPath is a string
set status [CkBz2_CompressMemToFile $inData $toPath]

BZip2 compresses and creates a .bz2 file from in-memory data.

Returns 1 for success, 0 for failure.

# returns a CkTask
# inData is a CkByteData
# toPath is a string
set ret_task [CkBz2_CompressMemToFileAsync $inData $toPath]

Creates an asynchronous task to call the CompressMemToFile 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 [CkBz2_SaveLastError $path]

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

Returns 1 for success, 0 for failure.

# inFilename is a string
# toPath is a string
set status [CkBz2_UncompressFile $inFilename $toPath]

Unzips a .bz2 file.

Returns 1 for success, 0 for failure.

# returns a CkTask
# inFilename is a string
# toPath is a string
set ret_task [CkBz2_UncompressFileAsync $inFilename $toPath]

Creates an asynchronous task to call the UncompressFile 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

# inFilename is a string
# outBytes is a CkByteData (output)
set status [CkBz2_UncompressFileToMem $inFilename $outData]

Unzips a .bz2 file directly to memory.

Returns 1 for success, 0 for failure.

# returns a CkTask
# inFilename is a string
set ret_task [CkBz2_UncompressFileToMemAsync $inFilename]

Creates an asynchronous task to call the UncompressFileToMem 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

# inData is a CkByteData
# outBytes is a CkByteData (output)
set status [CkBz2_UncompressMemory $inData $outData]

Unzips from an in-memory image of a .bz2 file directly into memory.

Returns 1 for success, 0 for failure.

# returns a CkTask
# inData is a CkByteData
set ret_task [CkBz2_UncompressMemoryAsync $inData]

Creates an asynchronous task to call the UncompressMemory 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

# inData is a CkByteData
# toPath is a string
set status [CkBz2_UncompressMemToFile $inData $toPath]

Unzips from an in-memory image of a .bz2 file to a file.

Returns 1 for success, 0 for failure.

# returns a CkTask
# inData is a CkByteData
# toPath is a string
set ret_task [CkBz2_UncompressMemToFileAsync $inData $toPath]

Creates an asynchronous task to call the UncompressMemToFile 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

# regCode is a string
set status [CkBz2_UnlockComponent $regCode]

Unlocks the component allowing for the full functionality to be used. If a purchased unlock code is passed, there is no expiration. Any other string automatically begins a fully-functional 30-day trial the first time UnlockComponent is called.

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