NetCode Class

Properties Methods Events Configuration Settings Errors

The NetCode component can be used to encode or decode files or strings using a variety of popular encoding formats such as: Base64, UUencode, URL, etc. UUEncode , MIME's Base64 Quoted-Printable , URL encoding formats, as well as secure hash functions such as MD5 and SHA1, are currently supported.

Syntax

NetCode

Remarks

The encoding format is specified by the Format property. The binary data, or the name of the file containing binary data, is specified by the DecodedData property and the encoded data or filename is specified by the EncodedData property. The FileName property may be used to override the default file names or to specify a directory during uuencoding. After uudecoding, the FileName property contains the fully specified file name of the decoded file.

Understanding Encoding/Decoding

Most of mail systems use only 7 bits to transmit messages. A binary file such as an archive or a non-plain text formatted file produced from a text processor should be first encoded in 7 bit code before email transfer.

Decoding is the inverse process: creation of the original file from the encoded data. Encoded data is often split over several files because of the size limit placed on the email message. Each message is preceded by information about this splitting, as well as the mail header. NetCode supports this case in both directions:

- During encoding setting the MaxFileSize config setting to the maximum size of a message body instructs NetCode to split the encoded data over several files. Multiple filenames can be specified by using question marks "?" (See the EncodedData property for more information).

- During decoding, the body messages can be saved in separate files named namexxx.ext where xxx is a numeral starting at 000 and ext is ".uue", ".b16", or ".q_p" according to Format. These multiple filenames should be given to EncodedData.

Property List

The following is the full list of the properties of the class with short descriptions. Click on the links for further details.


DecodedData	The decoded data.
DecodedFile	The filename of the decoded data.
EncodedData	The encoded data.
EncodedFile	Filename of the encoded data.
FileCnt	Shows the number of encoded files the component has read from or written into.
FileName	The destination filename for the encoded data.
Format	The type of encoding to be used.
Mode	The UNIX-style filemode when uuencoding / uudecoding.
Overwrite	Controls whether created file(s) should overwrite already existing file(s).
ProgressStep	Controls the granularity at which the Progress event is fired. Values 0-100.

Method List

The following is the full list of the methods of the class with short descriptions. Click on the links for further details.


Config	Sets or retrieves a configuration setting .
Decode	Decode string.
Encode	Encode the data.
ResetData	Resets the values of all data and stream properties.

Event List

The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.


Error	Information about errors during data delivery.
Progress	Occurs when PercentDone of the input is read.

Configuration Settings

The following is a list of configuration settings for the class with short descriptions. Click on the links for further details.


Base64LineBreak	Tells the component whether to include line breaks in Base64 encoded content or not.
HMACAlgorithm	The hash algorithm to use when generating a Hash-based Message Authentication Code (HMAC).
HMACKey	A key to use when generating a Hash-based Message Authentication Code (HMAC).
MaxFileSize	When encoding, controls whether encoded data should be split into several files and gives the maximum allowed size for these files.
UseModifiedUTF7	Specifies whether or not a modified form of UTF-7 for IMAP mailbox naming is used.
UseExtendedHexBase32	Specifies whether or not the Extended Hex alphabet is used.
CodePage	The system code page used for Unicode to Multibyte translations.