Re: [xslt] omit XML declaration in XSLT result

[Al Pacifico <adpacifico users sourceforge net>]

[SOLVED]

For anyone who follows, the problem was with the
xmlDocDumpFormatMemoryEnc call. When that line and the following "if
(buffer)" conditional expression were replaced with "if
(!xsltSaveResultToString(&buffer, &length, pDocOutput, cur))", the
problem went away.

Thanks for your input.
-Al

On Wed, Jul 22, 2009 at 12:14 PM, Michael Ludwig<mlu as-guides com> wrote:
> Al Pacifico schrieb:
>>
>> The xsl:output element attributes omit-xml-declaration and method are
>> correctly set to "yes" and "text" respectively. My JSON result string
>> produced by the following code is prefaced by an XML declaration,
>> which is unwanted.
>
>>      //Use the parsed stylesheet on the XML:
>>      xmlDocPtr pDocOutput = xsltApplyStylesheet(cur,
>> const_cast<xmlDoc*>(xml_document.cobj()), 0);
>>      xsltFreeStylesheet(cur);
>>
>>      //Get the output text:
>>      xmlChar* buffer = 0;
>>      int length = 0;
>>      xmlIndentTreeOutput = 1; //Format the output with extra white
>> space. TODO: Is there a better way than this global variable?
>>      xmlDocDumpFormatMemoryEnc(pDocOutput, &buffer, &length, 0, 0);
>
>> My result string is beginning with '<?xml version="1.0"
>> encoding="UTF-8"?>\n', not what I want. Same stylesheet (available at
>> http://www.xml.lt/static/files/xml2json.xsl) and xsltproc or
>> libxslt_tutorial.c from the libxslt website works fine.
>>
>> I must be doing something wrong. Guidance?
>
> Hi Al,
>
> I don't know about C, but quite often when xsl:output isn't respected,
> that means the XSLT serializer isn't in charge because you're outputting
> the result to a document object - not to a buffer or a string. If you
> want the XSLT serializer to be in charge, you must write to a buffer.
> But I don't know how that translates to the C API.
>
> In Perl, there are a couple of options:
>
> * output_string(result)
> * output_as_bytes(result)
> * output_as_chars(result)
> * output_fh(result, fh)
> * output_file(result, filename)
>
> What can be done in Perl definitely can be done in C.
>
> Hope this helps.
>
> Michael Ludwig
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>



-- 
Al Pacifico
Seattle, WA