<html>
<body>
<div style="font-family: Verdana, Arial, Helvetica, Sans-Serif;">
<table bgcolor="#f9f3c9" width="100%" cellpadding="8" style="border: 1px #c9c399 solid;">
<tr>
<td>
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>
</td>
</tr>
</table>
<br />
<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: 10px;">
<p style="margin-top: 0;">On July 29th, 2013, 4:32 a.m. UTC, <b>Thorsten Zachmann</b> wrote:</p>
<blockquote style="margin-left: 1em; border-left: 2px solid #d0d0d0; padding-left: 10px;">
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Hello Jos,
have you been doing some comparison in speed and memory usage for the writing out of odf? I would be very interested to see how it performs there.</pre>
</blockquote>
</blockquote>
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">No, I havent done any. With the commandline program ppttoodp and a ppt with many slides this could be done. I'm pretty sure the effect will be invisible, but I can try it. What analytical runs would you like to see?</pre>
<br />
<p>- Jos</p>
<br />
<p>On July 28th, 2013, 9:47 p.m. UTC, Jos van den Oever wrote:</p>
<table bgcolor="#fefadf" width="100%" cellspacing="0" cellpadding="8" style="background-image: url('http://git.reviewboard.kde.org/static/rb/images/review_request_box_top_bg.ab6f3b1072c9.png'); background-position: left top; background-repeat: repeat-x; border: 1px black solid;">
<tr>
<td>
<div>Review request for Calligra.</div>
<div>By Jos van den Oever.</div>
<p style="color: grey;"><i>Updated July 28, 2013, 9:47 p.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: 1px solid #b8b5a0">
<tr>
<td>
<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>
</td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: 1px solid #b8b5a0">
<tr>
<td>
<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>
</td>
</tr>
</table>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<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">(9258564)</span></li>
<li>libs/kotext/KoInlineNote.cpp <span style="color: grey">(6faa9a9)</span></li>
<li>libs/odf/CMakeLists.txt <span style="color: grey">(a2e3695)</span></li>
<li>libs/odf/writeodf/CMakeLists.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>
</ul>
<p><a href="http://git.reviewboard.kde.org/r/111773/diff/" style="margin-left: 3em;">View Diff</a></p>
</td>
</tr>
</table>
</div>
</body>
</html>