Review Request: read XML in the rigth way. ie. <a> <b>\n<c> has 5 nodes, not 3

Thorsten Zachmann t.zachmann at zagge.de
Tue Jul 5 19:20:44 CEST 2011



> On July 5, 2011, 5:18 p.m., Thorsten Zachmann wrote:
> > For me that looks quite wrong. The tests you changed should work even if there is a space at the beginning of the line. That is definitely something that needs very deep testing fotr that I need some time to see it does not break stuff. But for me it looks like that it will break stuff.

Here is part of the ODF spec that might be relevant for that change:

6.1.2 White space Characters
Consumers shall collapse white space characters that occur in
? a <text:p> or <text:h> element (so called paragraph elements), and
? in their descendant elements, if the OpenDocument schema permits the inclusion of character
data for the element itself and all its ancestor elements up to the paragraph element.
Collapsing white space characters is defined by the following algorithm:
1) The following [UNICODE] characters are normalized to a SPACE character:
?HORIZONTAL TABULATION (U+0009)
?CARRIAGE RETURN (U+000D)
?LINE FEED (U+000A)
?SPACE (U+0020)
2) The character data of the paragraph element and of all descendant elements for which the
OpenDocument schema permits the inclusion of character data for the element itself and all its
ancestor elements up to the paragraph element, is concatenated in document order.
3) Leading SPACE characters at the start of the resulting text and trailing SPACE characters at the
end of the resulting text are removed.
4) Sequences of SPACE characters are replaced by a single SPACE character.


- Thorsten


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On July 5, 2011, 4:37 p.m., Jaime Torres Amate wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> http://git.reviewboard.kde.org/r/101857/
> -----------------------------------------------------------
> 
> (Updated July 5, 2011, 4:37 p.m.)
> 
> 
> Review request for Calligra.
> 
> 
> Summary
> -------
> 
> Quoting the w3 consortium:
> [Definition: All text that is not markup constitutes the character data of the document.]
> 
> And in section
> http://www.w3.org/TR/REC-xml/#sec-white-space
> 
> In editing XML documents, it is often convenient to use "white space" (spaces, tabs, and blank lines) to set apart the markup for greater readability. 
> Such white space is typically not intended for inclusion in the delivered version of the document. 
> On the other hand, "significant" white space that should be preserved in the delivered version is common, for example in poetry and source code.
> 
> An XML processor MUST always pass all characters in a document that are not markup through to the application. 
> A  validating XML processor MUST also inform the application which of these characters constitute white space appearing in element content.
> 
> [Definition: An element type has mixed content when elements of that type may contain character data, optionally interspersed with child elements.] 
> ------------------
> The attached patch modifies the xml parser to return the spaces between > and < as text elements.
> 
> I needed to change the TestXmlReader to remove all the additional spaces between nodes.
> (I'll need to modify the patch to remove all the additional spaces I've introduced).
> 
> 
> Diffs
> -----
> 
>   libs/odf/KoXmlReader.cpp ad5e9d2 
>   libs/odf/KoXmlReaderForward.h 4ca9a74 
>   libs/odf/tests/TestXmlReader.cpp 6631b64 
> 
> Diff: http://git.reviewboard.kde.org/r/101857/diff
> 
> 
> Testing
> -------
> 
> The modified TestXmlReader test is OK.
> There are only 2 regressions in the tests that I do not know how to fix:
>         147 - krita-ui-KisKraLoaderTest (Failed)
>         148 - krita-ui-KisKraSaverTest (Failed)
> 
> Also, I've been able to read with calligrawords and calligrastage all the .od* that I have without problems.
> 
> 
> Thanks,
> 
> Jaime Torres
> 
>

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