[sword-devel] Working on a STEP Reader for SWORD

Paul Gear sword-devel@crosswire.org
Tue, 11 Jul 2000 19:39:55 +1000

"Trandahl, Steve" wrote:
> This is stretching my rusty C++ skills.  If I am reading the code correctly,
> calling the zBuf method suggested below will compress the text into the
> compressed buffer.  However, the text I'm reading from the STEP files is
> already compressed.  I guess I want to put the text directly into the
> compressed buffer without altering it.
> Are there any suggestions as to how to set this up?  I thought about
> overriding the zBuf method to skip the compression, but then there would be
> no way to compress using this class.
> Thanks,
> Steve
> -----Original Message-----
> From: Troy A. Griffitts [mailto:scribe@crosswire.org]
> Sent: Friday, June 02, 2000 8:10 PM
> To: sword-devel@crosswire.org
> Subject: Re: [sword-devel] Working on a STEP Reader for SWORD
> Steve,
>         It's not a bad as others might suggest.  We do have STEP
> decompression
> classes.  You will find them under
> sword/src/modules/common/lzsscomprs.cpp
> a convoluted example of using this class can be found in
> sword/tests/complzss
> A you will probably use the buffer methods to send chunks of a STEP
> module for decompression, eg.
> // set compressed buffer to the lzss compression class
> compress.zBuf(blockSize, compressedBuf);
> // ask the compression class for the decompressed buffer
> cout << "Decompressed text: " << compress.Buf();
> Hope this gives ya a start.  The STEP spec will tell you that umpteen
> bytes at the beginning of the index files tell you meta data and then
> you'll start getting to real data blocks eventually.  Try sending one of
> these data blocks to the compress class and you should get plain text
> data back (well STEP's RTF+ markup with data).  You will then want to
> visit our filter collection:
> sword/src/modules/filters/
> These filters are used for parsing different markup methodologies.  We
> have some for rtf, gbf, html, etc.  You might be able to start with one
> of these and see if you can get some basic text to display.
>         Please feel free to ASK LOTS OF QUESTIONS! :)
> ...


Any luck on getting things to decompress yet?

"He must become greater; i must become less." - John 3:30