Declarations Section, CompressString Function, DecompressString Function, DecompressStringLength Function, DeTab Function, EnTab Function, EnTabTable Function, RunLengthEncode Function, RunLengthDecode Function, RunLengthDecodeLength Function, RunLengthEncodePrintable Function, RunLengthDecodePrintable Function, SqueezeString Function, UnsqueezeString Function, UnsqueezeStringLength Function

Declarations Section

Compress String Function

Compress a string using whichever text compression technique can compress it the most. This function will compress the string using either the RunLengthEncode function or SqueezeString function.

Decompress String Function

Decompress a string which was compressed with the CompressString functions. Uses the first character of the string to identify which text decompression algorithm to use to decompress the string.

Decompress String Length Function

Returns the length of the decompressed version of a string that was compressed with the CompressString function.

De Tab Function

"Expand Tabs To Spaces" Replaces tab characters (Chr$(9)) with the number of spaces required to advance the print position to the next tab stop. Function assumes that there is a tab stop every vTabWidth characters.

En Tab Function

"Compress Spaces To Tabs" Replaces sequences of space characters which overlap tab stop positions with tab characters (Chr$(9)) thereby reducing the space required to store strings which contain many spaces. Function assumes that there is a tab stop every vTabWidth characters.

En Tab Table Function

"Compress Spaces To Tabs" Replaces sequences of space characters which overlap tab stop positions with tab characters (Chr$(9)) thereby reducing the space required to store strings which contain many spaces. Function assumes that there is a tab stop after every character position mentioned within array vTabStops.

Run Length Encode Function

Encode a string by replacing repeated runs of the same character with a run length code strings. The run length code strings describe the character which is repeated and the number of times it was repeated.

Run Length Decode Function

Decode a string which was run length encoded (RLE) with a function like RunLengthEncode. Run length code strings are replaced by repeated runs of the specified character.

Run Length Decode Length Function

Return the length of the decoded version of a run-length-encoded string.

Run Length Encode Printable Function

Encode a string by replacing repeated runs of characters with a run length code. Accepts a string containing ASCII values between 0 and 255 and returns a run-length-encoded string whose characters all have ASCII values within the range from 32 to 126 inclusive.

Run Length Decode Printable Function

Decode a string which was encoded with RunLengthEncodePrintable. This function is mainly used to decompress Visual Basic Global/Public Constant strings which are to contain "non-printable" characters (or those characters which Microsoft recommends should not appear within Visual Basic nor VBA Modules).

Squeeze String Function

Compresses a string by replacing certain pairs of characters with a single character and by replacing certain infrequently-occurring characters with a two-character sequence. This function achieves an average of 40% compression on English language text strings.

Unsqueeze String Function

Decompresses a string which was "squeezed" with the SqueezeString function.

Unsqueeze String Length Function

Return the length of the decoded version of a squeezed string.

This Windows-based ActiveX DLL provides many useful routines through its function-bearing and data structure classes. Consult the Help file for more information, or call us at 1-310-472-3736. For the latest news and files, visit our home page on the World Wide Web: http://www.entisoft.com