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52 lines
1.7 KiB
Plaintext
52 lines
1.7 KiB
Plaintext
{{QBDLDATE:05-20-2022}}
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{{QBDLTIME:23:08:43}}
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{{DISPLAYTITLE:_INFLATE$}}
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The [[_INFLATE$]] function decompresses a [[STRING|string]] compressed by the [[_DEFLATE$]] function.
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{{PageSyntax}}
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:{{Parameter|result$}} = [[_INFLATE$]]({{Parameter|stringToDecompress$[, originalSize&]}})
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{{PageDescription}}
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* {{Parameter|result$}} will contain the original version of {{Parameter|stringToDecompress$}}.
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* Optional parameter {{Parameter|originalSize&}} can be used if the original size of the uncompressed data is known beforehand, which makes the decompression routine run more efficiently.
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** If unspecified, decompression still works as expected, but may use more steps and need to allocate more memory internally.
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==Availability==
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* '''Version 1.4 and up'''.
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{{PageExamples}}
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''Example 1:'' Compressing a long string of text.
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{{CodeStart}}
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a$ = "The quick brown fox jumps over the lazy dog. "
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{{Cl|PRINT}} "Original string (a$): "; a$
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{{Cl|FOR}} i = 1 {{Cl|TO}} 15
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a$ = a$ + a$
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{{Cl|NEXT}}
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{{Cl|PRINT}} "After concatenating it into itself several times, LEN(a$) ="; {{Cl|LEN}}(a$)
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b$ = {{Cl|_DEFLATE$}}(a$)
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{{Cl|PRINT}} "After using _DEFLATE$ to compress it, LEN ="; {{Cl|LEN}}(b$)
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{{Cl|PRINT}} {{Cl|USING}} "(compressed size is #.###% of the original)"; (({{Cl|LEN}}(b$) * 100) / {{Cl|LEN}}(a$))
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c$ = {{Cl|_INFLATE$}}(b$)
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PRINT "After using _INFLATE$ to decompress it, LEN ="; {{Cl|LEN}}(c$)
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{{CodeEnd}}
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{{OutputStart}}
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Original string (a$): The quick brown fox jumps over the lazy dog
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After concatenating it into itself several times, LEN(a$) = 1474560
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After using _DEFLATE$ to compress it, LEN = 4335
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(compressed size is 0.295% of the original)
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After using _INFLATE$ to decompress it, LEN = 1474560
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{{OutputEnd}}
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{{PageSeeAlso}}
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* [[_DEFLATE$]]
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{{PageNavigation}}
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