ABAPClasstogzipandgunzip - CSDN文库

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ABAP Class to gzip and gunzip

© 2006 SAP AG The SAP Developer Network: http://sdn.sap.com

1

Applies To:

SAP R/3 4.7 and above

Summary

ABAP Implementation of GZIP

By: Otto Frost

Company: Capgemini

Date: 17 March 2006

GZIP / GUNZIP

The zcl_abap_gzip ABAP class implements gzip and gunzip as described in RFC 1952 - GZIP file format

specification version 4.3

http://www.faqs.org/rfcs/rfc1952.html.

Gzip/Gunzip is a lossless compressed data format that

• Is independent of CPU type, operating system, file system, and character set, and hence can be

used for interchange

• Can compress or decompress a data stream (as opposed to a randomly accessible file) to

produce another data stream, using only an a priori bounded amount of intermediate storage, and

hence can be used in data communications or similar structures such as Unix filters

• Compresses data with efficiency comparable to the best currently available general-purpose

compression methods, and in particular considerably better than the "compress" program

• Can be implemented readily in a manner not covered by patents, and hence can be practiced

freely

• Is compatible with the file format produced by the current widely used gzip utility, in that

conforming decompressors will be able to read data produced by the existing gzip compressor.

The zcl_abap_gzip ABAP class is intended for use by implementers of software to compress data into gzip

format and/or decompress data from gzip format.

If you need more information about gzip, try a google search. On a unix box the command "man gzip" or

"gzip --help" may work too. On windows gzip is available in the CygWin package from RedHat. On

http://www.gnu.org/ you should be able to find a manual for gzip.

Example code

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评论1

smart0769

2021-06-28

好像没实际用处

ChampaignWolf

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