INFLATE$: Difference between revisions
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(Created page with "{{DISPLAYTITLE:_INFLATE$}} The _INFLATE$ function decompresses a string compressed by the _DEFLATE$ function. {{PageSyntax}} :{{Parameter|result$}} = _INFLATE$({{Parameter|stringToDecompress$[, originalSize&]}}) {{PageDescription}} * {{Parameter|result$}} will contain the original version of {{Parameter|stringToDecompress$}}. * Optional parameter {{Parameter|originalSize&}} can be used if the original size of the uncompressed data is known befo...") |
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{{PageAvailability}} | |||
* '''Version 1.4 and up'''. | * '''Version 1.4 and up'''. | ||
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a$ = a$ + a$ | a$ = a$ + a$ | ||
{{Cl|NEXT}} | {{Cl|NEXT}} | ||
{{Cl|PRINT}} "After concatenating it into itself several times, LEN(a$) ="; {{Cl|LEN}}(a$) | {{Cl|PRINT}} "After concatenating it into itself several times, LEN(a$) ="; {{Cl|LEN}}(a$) | ||
b$ = {{Cl|_DEFLATE$}}(a$) | b$ = {{Cl|_DEFLATE$}}(a$) | ||
{{Cl|PRINT}} "After using _DEFLATE$ to compress it, LEN ="; {{Cl|LEN}}(b$) | {{Cl|PRINT}} "After using _DEFLATE$ to compress it, LEN ="; {{Cl|LEN}}(b$) | ||
{{Cl|PRINT | {{Cl|PRINT USING}} "(compressed size is #.###% of the original)"; (({{Cl|LEN}}(b$) * 100) / {{Cl|LEN}}(a$)) | ||
c$ = {{Cl|_INFLATE$}}(b$) | c$ = {{Cl|_INFLATE$}}(b$) | ||
PRINT "After using _INFLATE$ to decompress it, LEN ="; {{Cl|LEN}}(c$) | PRINT "After using _INFLATE$ to decompress it, LEN ="; {{Cl|LEN}}(c$) | ||
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After using _INFLATE$ to decompress it, LEN = 1474560 | After using _INFLATE$ to decompress it, LEN = 1474560 | ||
{{OutputEnd}} | {{OutputEnd}} | ||
{{PageSeeAlso}} | {{PageSeeAlso}} | ||
Latest revision as of 00:42, 29 January 2023
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$.
- Optional parameter originalSize& can be used if the original size of the uncompressed data is known beforehand, which makes the decompression routine run more efficiently.
- If unspecified, decompression still works as expected, but may use more steps and need to allocate more memory internally.
Availability
- Version 1.4 and up.
Examples
Example 1: Compressing a long string of text.
a$ = "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