Bz2 Node.js Reference Documentation

Bz2

Current Version: 9.5.0.73

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

Object Creation

var obj = new chilkat.Bz2();

Properties

AbortCurrent
AbortCurrent
· boolean
Introduced in version 9.5.0.58

When set to true, 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 false when the next method is called. When the abort occurs, this property is reset to false. Both synchronous and asynchronous method calls can be aborted. (A synchronous method call could be aborted by setting this property from a separate thread.)

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DebugLogFilePath
DebugLogFilePath
· string

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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LastErrorHtml
LastErrorHtml
· string, read-only

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
LastErrorText
· string, read-only

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
LastErrorXml
· string, read-only

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
LastMethodSuccess
· boolean
Introduced in version 9.5.0.52

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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VerboseLogging
VerboseLogging
· boolean

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
Version
· string, read-only

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

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Methods

CompressFile
var status = CompressFile(inFilename, toPath);
· Returns Boolean (true for success, false for failure).
· inFilename String
· toPath String

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

Returns true for success, false for failure.

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CompressFileAsync (1)
var ret_task = CompressFileAsync(inFilename, toPath);
· Returns a Task
· inFilename String
· toPath String

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

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CompressFileToMem
var retBuf = CompressFileToMem(inFilename);
· Returns a Buffer.

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

Returns null on failure

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CompressFileToMemAsync (1)
var ret_task = CompressFileToMemAsync(inFilename);
· Returns a Task
· inFilename String

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

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CompressMemory
var retBuf = CompressMemory(inData);
· Returns a Buffer.

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

Returns null on failure

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CompressMemoryAsync (1)
var ret_task = CompressMemoryAsync(inData);
· Returns a Task
· inData Buffer

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

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CompressMemToFile
var status = CompressMemToFile(inData, toPath);
· Returns Boolean (true for success, false for failure).
· inData Buffer
· toPath String

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

Returns true for success, false for failure.

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CompressMemToFileAsync (1)
var ret_task = CompressMemToFileAsync(inData, toPath);
· Returns a Task
· inData Buffer
· toPath String

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

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SaveLastError
var status = SaveLastError(path);
· Returns Boolean (true for success, false for failure).
· path String

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

Returns true for success, false for failure.

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UncompressFile
var status = UncompressFile(inFilename, toPath);
· Returns Boolean (true for success, false for failure).
· inFilename String
· toPath String

Unzips a .bz2 file.

Returns true for success, false for failure.

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UncompressFileAsync (1)
var ret_task = UncompressFileAsync(inFilename, toPath);
· Returns a Task
· inFilename String
· toPath String

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

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UncompressFileToMem
var retBuf = UncompressFileToMem(inFilename);
· Returns a Buffer.

Unzips a .bz2 file directly to memory.

Returns null on failure

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UncompressFileToMemAsync (1)
var ret_task = UncompressFileToMemAsync(inFilename);
· Returns a Task
· inFilename String

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

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UncompressMemory
var retBuf = UncompressMemory(inData);
· Returns a Buffer.

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

Returns null on failure

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UncompressMemoryAsync (1)
var ret_task = UncompressMemoryAsync(inData);
· Returns a Task
· inData Buffer

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

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UncompressMemToFile
var status = UncompressMemToFile(inData, toPath);
· Returns Boolean (true for success, false for failure).
· inData Buffer
· toPath String

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

Returns true for success, false for failure.

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UncompressMemToFileAsync (1)
var ret_task = UncompressMemToFileAsync(inData, toPath);
· Returns a Task
· inData Buffer
· toPath String

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

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UnlockComponent
var status = UnlockComponent(regCode);
· Returns Boolean (true for success, false for failure).
· regCode String

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 true for success, false for failure.

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