Re: [xml] xml output streaming and c14n

[Aleksey Sanin <aleksey aleksey com>]

Look at testC14N.c for a c14n example.

Aleksey

Prashant R wrote:
> I have a requirement, where I would not want to have the entire xml data 
> in memory and preferably writing out canonicalized XML to IO . 
> I had a few questions to understand this better 
>
> I was planning on doing the following 
>
>     * creating an OutputBuffer using the API - xmlOutputBufferCreateIO
>       <http://xmlsoft.org/html/libxml-xmlIO.html#xmlOutputBufferCreateIO>
>       (xmlOutputWriteCallback
>       <http://xmlsoft.org/html/libxml-xmlIO.html#xmlOutputWriteCallback>
>       iowrite, xmlOutputCloseCallback
>       <http://xmlsoft.org/html/libxml-xmlIO.html#xmlOutputCloseCallback>
>       ioclose, void * ioctx, xmlCharEncodingHandlerPtr
>       <http://xmlsoft.org/html/libxml-encoding.html#xmlCharEncodingHandlerPtr>
>       encoder) // as I need to stream to I/O
>     * then  using the API  xmlTextWriterPtr
>       <http://xmlsoft.org/html/libxml-xmlwriter.html#xmlTextWriterPtr>
>       xmlNewTextWriter (xmlOutputBufferPtr
>       <http://xmlsoft.org/html/libxml-tree.html#xmlOutputBufferPtr> out)
>       , to create an xmlWriterObject
>
>     * write out the xml nodes based on my application logic
>
>
> Quesions
> 1. When will the actual write ( to I/O , in my case )occur ? Could it 
> occur before the entire document is fully completed?
>
> 2. Is there a way where I could stream xml data directly to IO without 
> building the tree in memory ( using DOM API's)?
>
> 3 If there is a way to do (2) , then is there a way to specify that the 
> output be canonicalized ?
>
> Thanks in advance
>
>
>
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