INFLATE$

The _INFLATE$ function decompresses a string compressed by the _DEFLATE$ function.

Syntax

result$ = _INFLATE$(stringToDecompress$[, originalSize&])

Description

• result$ will contain the original version of stringToDecompress$.
• Optional parameter originalSize& can be used if the original size of the uncompressed data is known beforehand, which makes the decompression routine run more efficiently.
  • If unspecified, decompression still works as expected, but may use more steps and need to allocate more memory internally.

Availability

• 

  v1.4

• 

  all

• 
• 

  yes

• 

  yes

• 

  yes

Examples

Example 1: Compressing a long string of text.

a$ = "The quick brown fox jumps over the lazy dog. " PRINT "Original string (a$): "; a$ FOR i = 1 TO 15 a$ = a$ + a$ NEXT PRINT "After concatenating it into itself several times, LEN(a$) ="; LEN(a$) b$ = _DEFLATE$(a$) PRINT "After using _DEFLATE$ to compress it, LEN ="; LEN(b$) PRINT USING "(compressed size is #.###% of the original)"; ((LEN(b$) * 100) / LEN(a$)) c$ = _INFLATE$(b$) PRINT "After using _INFLATE$ to decompress it, LEN ="; LEN(c$)

Original string (a$): The quick brown fox jumps over the lazy dog After concatenating it into itself several times, LEN(a$) = 1474560 After using _DEFLATE$ to compress it, LEN = 4335 (compressed size is 0.295% of the original) After using _INFLATE$ to decompress it, LEN = 1474560

See also

• _DEFLATE$
• _BASE64DECODE$, _BASE64ENCODE$

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