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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/111773/">http://git.reviewboard.kde.org/r/111773/</a>
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<div>Review request for Calligra.</div>
<div>By Jos van den Oever.</div>
<p style="color: grey;"><i>Updated Aug. 2, 2013, 11:59 p.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Changes</h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Added missing files.
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This patch is also available in the branch libs-writeodf-vandenoever-2.
Two years ago I wrote an initial version of this patch and a detailed discussion on the mailing list [1] followed. The main objections to the patch have been dealt with (see below).
Most of this new version was written at Akademy in Bilbao.
Very short summary of the patch:
This patch should help everybody, young and old, with coding C++ for writing ODF and make errors easier to catch.
The OpenDocument Format specification is published with a Relax NG file that specifies the XML format. This file can be used to check if ODF files are valid. It can also be used to generate a C++ API headers. This is what this patch does.
Example:
Instead of writing:
==
xmlWriter->startElement("text:p");
xmlWriter->addAttribute("text:style-name", "italic");
xmlWriter->startElement("text:p");
xmlWriter->addAttribute("text:style-name", "bold");
xmlWriter->addTextNode("Hello World!");
xmlWriter->endElement();
xmlWriter->endElement();
==
you can write:
==
text_p p(xmlWriter);
p.set_text_style_name("italic");
text_span span(p.add_text_span());
span.set_text_style_name("italic");
span.addTextNode("Hello World!");
==
Some advantages:
- autocompletion when coding: faster coding
- tag and attribute names are not strings but class and function names: less errors
- nesting is checked by the compiler
- you write to elements (span, p), not xmlwriter: easier to read
- required attributes are part of the element constructor
Implementation considerations:
- Calligra is large, so the generated code mixes well with the use of KoXmlWriter and porting can be done in small steps.
- class and function names are similar to the xml tags with ':' and '-' replaced by '_'.
- stack based: no heap allocations
- only header files: all code will inline and have low impact on runtime
- modular: one header file per namespace to reduce compile overhead
- code generator is Qt code, part of Calligra and runs as a build step
Not in this patch (and places where you can help in the future):
- generate enumerations based on Relax NG
- check data type for attributes (you can still write "hello" to an integer attribute)
- complete port of Calligra to the generated code
- improved speed by using static QString instead of const char*
Provided solutions to previously raised issues:
- modular headers to reduce compile overhead
- function "end()" to optionally close an element before it goes out of scope
- use structure of Relax NG file to reduce header sizes by inheritance from common groups
- provide most KoXmlWriter functionality safely through the element instances
- closing elements is now automatic at a slight runtime overhead
[1] http://lists.kde.org/?t=130768700500002</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Opened several ppt and xls files.
Checked ppt conversion for two files and checked that XML was equivalent.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> (updated)</h1>
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<li>devtools/CMakeLists.txt <span style="color: grey">(15008fb)</span></li>
<li>devtools/rng2cpp/CMakeLists.txt <span style="color: grey">(PRE-CREATION)</span></li>
<li>devtools/rng2cpp/rng2cpp.cpp <span style="color: grey">(PRE-CREATION)</span></li>
<li>filters/libmso/CMakeLists.txt <span style="color: grey">(6bc145f)</span></li>
<li>filters/libmso/shapes.cpp <span style="color: grey">(073e061)</span></li>
<li>filters/libmso/shapes2.cpp <span style="color: grey">(0f0b906)</span></li>
<li>filters/sheets/excel/import/CMakeLists.txt <span style="color: grey">(2466218)</span></li>
<li>filters/sheets/excel/import/excelimporttoods.cc <span style="color: grey">(de788d4)</span></li>
<li>filters/stage/powerpoint/PptToOdp.h <span style="color: grey">(8d85c1f)</span></li>
<li>filters/stage/powerpoint/PptToOdp.cpp <span style="color: grey">(425ac33)</span></li>
<li>libs/kotext/KoInlineNote.cpp <span style="color: grey">(6faa9a9)</span></li>
<li>libs/odf/CMakeLists.txt <span style="color: grey">(8549ace)</span></li>
<li>libs/odf/writeodf/CMakeLists.txt <span style="color: grey">(PRE-CREATION)</span></li>
<li>libs/odf/writeodf/README.txt <span style="color: grey">(PRE-CREATION)</span></li>
<li>libs/odf/writeodf/helpers.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>libs/odf/writeodf/odfwriter.h <span style="color: grey">(PRE-CREATION)</span></li>
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<p><a href="http://git.reviewboard.kde.org/r/111773/diff/" style="margin-left: 3em;">View Diff</a></p>
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