[jsword-devel] Module Format

[Troy A. Griffitts]

:)
Joe,
    The individual who initially wrote the compressed drivers chose to 
use different file names depending upon the BLOCKTYPE of the 
compression.  The files that you mention that end in bz* are basically 
saying that the indecies are BOOK oriented (an entry of the top level 
index will identify a compressed block of 1 Bible book) , although the 
best place to determine this is from the .conf file.

The declaration and use of the mechanisms, in the code, is in two parts:

Near the top of zVerse you will find the construct:

const char zVerse::uniqueIndexID[] = {'X', 'r', 'v', 'c', 'b'};

Then index names are built with something like this excerpt from the code:

sprintf(buf, "%s/ot.%czs", path, uniqueIndexID[blockType]);

remember %c means CHARACTER, which is replaced by the value of the param 
passed (which, I'm sure you knew, but I admit '%czs' does seem to make 
the eye just see the CZS as a unit)

Hope this helps,
        -Troy.



Joe Walker wrote:

>
> Hi,
>
> My copy of the RSV module contains files with the extension bz* and 
> not cz* as read by zVerse.cpp, and I can't find the string bzs in the 
> source anywhere that makes sense. What am I doing wrong?
>
> I've spent hours and hours digging through the C source, and either my 
> C is very rusty or it is even harder that I imagined to convert C with 
> lots of memory/pointer manipulation into Java. Could anyone explain 
> the file format of the GZIP compressed modules? My head hurts and I'm 
> not making much progress at the moment. Actually doing the 
> decompression is easy - it's reading an array of bytes from disk that 
> I am struggling with.
>
> Thanks,
>
> Joe.
>
>
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