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Posted to dev@perl.apache.org by Matt Sergeant <ma...@sergeant.org> on 2001/01/14 11:43:03 UTC
Binary nulls in notes values
There doesn't appear to be a way to work with notes values that contain
binary nulls - we get the value out using newSVpv(sv, 0), which uses
strlen to calculate the length, which stops at the first null. I can't
find any way to get at the length of the value in a table.
Am I mistaken or is this intentional? Its a bit of a disaster for things
like Apache::Filter which might need to send (for example) DVI's which
contain multiple NULLs, and of course AxKit, which is how I discovered the
problem. I'm thinking of switching to pnotes instead.
--
<Matt/>
/|| ** Director and CTO **
//|| ** AxKit.com Ltd ** ** XML Application Serving **
// || ** http://axkit.org ** ** XSLT, XPathScript, XSP **
// \\| // ** Personal Web Site: http://sergeant.org/ **
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Re: Binary nulls in notes values
Posted by Gerald Richter <ri...@ecos.de>.
> There doesn't appear to be a way to work with notes values that contain
> binary nulls - we get the value out using newSVpv(sv, 0), which uses
> strlen to calculate the length, which stops at the first null. I can't
> find any way to get at the length of the value in a table.
>
> Am I mistaken or is this intentional? Its a bit of a disaster for things
> like Apache::Filter which might need to send (for example) DVI's which
> contain multiple NULLs, and of course AxKit, which is how I discovered the
> problem. I'm thinking of switching to pnotes instead.
>
notes are a part of the Apache API. Notes are stored in an Apache table,
which only works with null terminated strings, so you can't store binary
nulls into such a notes the table. The problem is not the newSVpv(sv,0), but
the Apache API.
To pass binary data, you have to switch to pnotes, which is implemented by
mod_perl (therefore ins't accessable by other Apache modules), but can store
any binary data.
Gerald
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