Help Center
Help CenterFreeBASICTutorials

LZO

Documentation

LZO is a compression library offering fast compression and very fast decompression.

Website: https://www.oberhumer.com/opensource/lzo/
Platforms supported: Win32, Linux, DOS
Headers to include: lzo/lzo.bi
Header version: 2.02

Example

#include "lzo/lzo1x.bi"



Dim inbuf As ZString Ptr = @"string to compress (or not, since it's so short)"

Dim inlen As Integer = Len(*inbuf) + 1

Dim complen As lzo_uint = 100

Dim compbuf As ZString Ptr = Allocate(complen)

Dim decomplen As lzo_uint = 100

Dim decompbuf As ZString Ptr = Allocate(decomplen)

Dim workmem As Any Ptr



Print "initializing LZO: ";

If lzo_init() = 0 Then

    Print "ok"

Else

    Print "failed!"

    End 1

End If



Print "compressing '" & *inbuf & "': ";



workmem = Allocate(LZO1X_1_15_MEM_COMPRESS)



If lzo1x_1_15_compress(inbuf, inlen, compbuf, @complen, workmem) = 0 Then

    Print "ok (" & inlen & " bytes in, " & complen & " bytes compressed)"

Else

    Print "failed!"

    End 1

End If



Deallocate(workmem)



Print "decompressing: ";



workmem = Allocate(LZO1X_MEM_DECOMPRESS)



If lzo1x_decompress(compbuf, complen, decompbuf, @decomplen, NULL) = 0 Then

    Print "ok: '" & *decompbuf & "' (" & complen & " bytes compressed, " & decomplen & " bytes decompressed)"

Else

    Print "failed!"

    End 1

End If



Deallocate(workmem)