Landon Curt Noll
b66c79254a
When language is specified in a markdown code block such as:
````
```c
printf("Hello, world!\n");
```
````
is used, the resulting HTML as produced by `pandoc(1)` combined
with our revised `ioccc.css` is not intent the code block well.
A temporary "_hack-a-round_" is to turn the "markdown code language
specifier" into an HTML comment. For example:
````
```<!---c-->
printf("Hello, world!\n");
```
````
This commits turns off existing markdown code language specifiers
for now, while preserving our ability to restore them in the future
when a better "_hack-a-round_" to the "markdown code language
specifier" problem is found.
The HTML impact if this "_hack-a-round_" is to produce HTML that
looks like this:
```
<pre class="<!---c-->"><code> .. </code></pre>
```
We might be able to create a complex set of classes for each markdown
code language (there won't be very many) in `ioccc.css`, or we might
find a more general CSS (or maybe `pandoc(1)`?) solution.
For now, this hack-a-round will have to do.
327 lines
15 KiB
HTML
327 lines
15 KiB
HTML
<!DOCTYPE html>
|
||
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
|
||
<!-- START: two lines up starts content from: inc/top.default.html -->
|
||
|
||
<!-- END: this line ends content from: inc/top.default.html -->
|
||
<!-- START: this line starts content from: inc/head.default.html -->
|
||
|
||
<head>
|
||
<link rel="stylesheet" href="../../ioccc.css">
|
||
<meta charset="utf-8">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
|
||
<title>2020/yang - Best abuse of CPP</title>
|
||
<link rel="icon" type="image/x-icon" href="../../favicon.ico">
|
||
<meta name="description" content="2020 IOCCC entry yang - Best abuse of CPP">
|
||
<meta name="keywords" content="IOCCC, 2020, IOCCC 2020, IOCCC entry, yang, Best abuse of CPP">
|
||
</head>
|
||
|
||
<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
|
||
<!-- !!! DO NOT MODIFY THIS FILE - This file is generated by a tool !!! -->
|
||
<!-- !!! DO NOT MODIFY THIS FILE - This file is generated by a tool !!! -->
|
||
<!-- !!! DO NOT MODIFY THIS FILE - This file is generated by a tool !!! -->
|
||
<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
|
||
|
||
<!-- END: this line ends content from: inc/head.default.html -->
|
||
|
||
<!-- -->
|
||
<!-- This web page was formed via the tool: bin/readme2index.sh -->
|
||
<!-- The content of main section of this web page came from: 2020/yang/README.md -->
|
||
<!-- -->
|
||
|
||
<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
|
||
<!-- !!! Do not modify this web page, instead modify the file: 2020/yang/README.md !!! -->
|
||
<!-- !!! Do not modify this web page, instead modify the file: 2020/yang/README.md !!! -->
|
||
<!-- !!! Do not modify this web page, instead modify the file: 2020/yang/README.md !!! -->
|
||
<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
|
||
|
||
<!-- Markdown content was converted into HTML via the tool: bin/md2html.sh -->
|
||
|
||
<!-- START: this line starts content from: inc/body.default.html -->
|
||
|
||
<body>
|
||
|
||
<!-- END: this line ends content from: inc/body.default.html -->
|
||
<!-- START: this line starts content from: inc/header.default.html -->
|
||
|
||
<div class="header">
|
||
<img src="../../png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
|
||
<h1>The International Obfuscated C Code Contest</h1>
|
||
<h2>2020/yang - Best abuse of CPP</h2>
|
||
</div>
|
||
|
||
<!-- END: this line ends content from: inc/header.default.html -->
|
||
<!-- START: this line starts content from: inc/topnav.last.html -->
|
||
|
||
<div class="topnav">
|
||
<a class="Left" href="../tsoj/index.html">← tsoj</a>
|
||
<a class="Left" href="../index.html">↑ 2020 ↑</a>
|
||
<a class="Left Disabled" href="#">last entry</a>
|
||
<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/2020/yang/prog.c">C code</a>
|
||
<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/2020/yang/Makefile">Makefile</a>
|
||
<a class="Right" href="#inventory">Inventory</a>
|
||
</div>
|
||
|
||
<!-- END: this line ends content from: inc/topnav.last.html -->
|
||
<!-- START: this line starts content from: inc/begin-row.default.html -->
|
||
|
||
<div class="row">
|
||
|
||
<!-- END: this line ends content from: inc/begin-row.default.html -->
|
||
<!-- START: this line starts content from: inc/begin-leftcolumn.default.html -->
|
||
|
||
<div class="leftcolumn">
|
||
|
||
<!-- END: this line ends content from: inc/begin-leftcolumn.default.html -->
|
||
<!-- START: this line starts content from: inc/sidenav.default.html -->
|
||
|
||
<div class="sidenav">
|
||
<a href="#content">Jump to contents</a>
|
||
</div>
|
||
<hr>
|
||
<div class="sidenav">
|
||
<a href="../../index.html">IOCCC Home</a>
|
||
<a href="../../years.html">Winning Entries</a>
|
||
<a href="../../authors.html">People who have won</a>
|
||
<a href="../../location.html">Location of authors</a>
|
||
</div>
|
||
<hr>
|
||
<div class="sidenav">
|
||
<a href="../../news.html">IOCCC News</a>
|
||
<a href="../../status.html">Contest status</a>
|
||
<a href="../../faq.html#submit">How to enter the IOCCC</a>
|
||
<a href="../../faq.html">FAQ</a>
|
||
</div>
|
||
<hr>
|
||
<div class="sidenav">
|
||
<a href="../../bugs.html">Bugs & (mis)features</a>
|
||
<a href="../../faq.html#fix_an_entry">Fixing IOCCC entries</a>
|
||
<a href="../../faq.html#fix_web_site">Fixing the web site</a>
|
||
<a href="../../faq.html#fix_author">Fixing author info</a>
|
||
<a href="../../thanks-for-help.html">Thanks for the help</a>
|
||
</div>
|
||
<hr>
|
||
<div class="sidenav">
|
||
<a href="../../judges.html">The IOCCC Judges</a>
|
||
<a href="../../contact.html">Contacting the IOCCC</a>
|
||
</div>
|
||
<hr>
|
||
<div class="sidenav">
|
||
<a href="#top">Jump to top</a>
|
||
</div>
|
||
|
||
<!-- END: this line ends content from: inc/sidenav.default.html -->
|
||
<!-- START: this line starts content from: inc/end-leftcolumn.default.html -->
|
||
|
||
</div>
|
||
|
||
<!-- END: this line ends content from: inc/end-leftcolumn.default.html -->
|
||
<!-- START: this line starts content from: inc/begin-rightcolumn.default.html -->
|
||
|
||
<div class="rightcolumn">
|
||
|
||
<!-- END: this line ends content from: inc/begin-rightcolumn.default.html -->
|
||
<!-- START: this line starts content from: inc/before-content.default.html -->
|
||
|
||
<a name="content"></a>
|
||
|
||
<!-- END: this line ends content from: inc/before-content.default.html -->
|
||
<!-- START: this line starts content for HTML phase 20 by: bin/output-index-author.sh via bin/md2html.sh -->
|
||
|
||
<!-- START: this line starts content generated by: bin/output-index-author.sh -->
|
||
|
||
<h2 id="author"><a name="author"></a>Author:</h2>
|
||
<ul>
|
||
<li>Name: <a href="../../authors.html#Don_Yang">Don Yang</a><br>
|
||
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
|
||
</ul>
|
||
|
||
<!-- END: next line ends content generated by: bin/output-index-author.sh -->
|
||
|
||
<!-- END: this line ends content for HTML phase 20 by: bin/output-index-author.sh via bin/md2html.sh -->
|
||
<!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||
|
||
<h2 id="to-build">To build:</h2>
|
||
<pre class="<!---<!---sh-->-->"><code> make</code></pre>
|
||
<h2 id="to-use">To use:</h2>
|
||
<pre class="<!---<!---sh-->-->"><code> ./prog [PIN] < input.txt > output.c</code></pre>
|
||
<h2 id="try">Try:</h2>
|
||
<pre class="<!---<!---sh-->-->"><code> ./try.sh</code></pre>
|
||
<p>The author provided the file <a href="cppp.cc">cppp.cc</a> which can preprocess the
|
||
generated output to make them more acceptable to typical compilers. To build:</p>
|
||
<pre class="<!---<!---sh-->-->"><code> make cppp</code></pre>
|
||
<p>See the author’s remarks for more details.</p>
|
||
<h2 id="judges-remarks">Judges’ remarks:</h2>
|
||
<p>You might think of this entry as code obfuscater with a code.
|
||
If you use the wrong code, you’re gonna have a bad time.
|
||
What is compiling this entry about?
|
||
<a href="https://southpark.fandom.com/wiki/Asspen/Script">Having a good .. time</a>!</p>
|
||
<p>This winning entry also comes with a <a href="spoiler.html">JavaScript timelapse
|
||
spoiler</a> that shows how this entry was written.</p>
|
||
<h2 id="authors-remarks">Author’s remarks:</h2>
|
||
<h3 id="synopsis">Synopsis</h3>
|
||
<pre class="<!---<!---sh-->-->"><code> echo "Hello world" | ./prog 12345 > encoded.c
|
||
|
||
gcc -DPIN=12345 encoded.c -o ./decoded && ./decoded</code></pre>
|
||
<h3 id="details">Details</h3>
|
||
<p>Mile is a C code generator. Run without arguments for the help message below:</p>
|
||
<pre><code> usage: [PIN] < input.txt > output.c
|
||
|
||
where [PIN] is an integer in the range of 1..65535</code></pre>
|
||
<p>When run with an encoding PIN (first command line argument), Mile will
|
||
read bytes from <code>stdin</code> and generate C code on <code>stdout</code>. Example:</p>
|
||
<pre class="<!---<!---sh-->-->"><code> echo "Hello, world!" | ./prog 56789 > encoded.c</code></pre>
|
||
<p>This generated code will reproduce the same input bytes on <code>stdout</code> when
|
||
executed, if it was compiled with the same encoding PIN.</p>
|
||
<pre class="<!---<!---sh-->-->"><code> gcc -DPIN=56789 encoded.c -o decoded</code></pre>
|
||
<p>The generated code reconstructs all data at compile time by seeding a
|
||
random number generator with the given PIN to reproduce the input bytes,
|
||
and simply does one <code>fwrite(3)</code> call at run time to print those bytes. Not
|
||
specifying a PIN is a compile time error. Specify the wrong PIN and
|
||
output code will still compile, but will likely produce garbage instead of
|
||
the input bytes. If the original input was empty then any PIN works, but
|
||
you might get a compile time warning complaining about empty arrays.</p>
|
||
<p>Because all data is reconstructed at compile time, expect the compile time
|
||
to be excruciatingly long if you try to encode too much data. Code
|
||
generated by encoding a haiku will probably compile in seconds, a limerick
|
||
may require tens of seconds, a sonnet will take minutes. Give Mile an
|
||
epic poem and you can probably write a faster preprocessor before GCC is
|
||
done (Clang probably already failed long before then).</p>
|
||
<p>I see that there is a lack of preprocessor abuse in recent years, probably
|
||
because programming in preprocessor is too tedious. Mile is meant to help
|
||
with that by producing C code filled with at least 98% preprocessor lines
|
||
for any input. Now you too can enjoy long compile times with minimal
|
||
effort.</p>
|
||
<h3 id="features">Features</h3>
|
||
<ul>
|
||
<li><p>Output is randomized using system clock, so if you wait a second between
|
||
runs, you should get a different generated code even for the same
|
||
encoding PIN.</p></li>
|
||
<li><p>Customized bytecode encoding of preprocessor boilerplates, mostly for
|
||
compression but should also make reverse engineering more fun.</p></li>
|
||
<li><p>CRC32 of the source code is embedded in the source code itself.</p></li>
|
||
<li><p>Code layout shaped to resemble “Mile” from “Didn’t I Say to Make My
|
||
Abilities Average in the Next Life?!”. Mile is known to be able to talk
|
||
to nanomachines directly, which is exactly what programming in
|
||
preprocessor feels like.</p></li>
|
||
</ul>
|
||
<h3 id="compatibility">Compatibility</h3>
|
||
<p>Mile has been verified to work in these environments (also, compiles
|
||
without warnings on all of these):</p>
|
||
<ul>
|
||
<li>gcc 9.2.0 on Cygwin</li>
|
||
<li>gcc 8.3.0 on Linux</li>
|
||
<li>gcc 7.4.0 on Cygwin</li>
|
||
<li>gcc 6.1.0 on JSLinux</li>
|
||
<li>gcc 5.4.0 on Linux</li>
|
||
<li>clang 8.0.1 on Linux</li>
|
||
<li>clang 8.0.1 on Cygwin</li>
|
||
<li>tcc 0.9.27 on Linux</li>
|
||
<li>tcc 0.9.25 on JSLinux</li>
|
||
</ul>
|
||
<p>Output of Mile is a bit more taxing, and only works with a subset of the
|
||
above:</p>
|
||
<ul>
|
||
<li>gcc: works just fine when using 8.3.0 and below, but may trigger warning
|
||
for large files. gcc 9.2.0 and above may crash with large files.</li>
|
||
<li>clang: works fine for small files, fails on large files due to
|
||
<a href="https://bugs.llvm.org/show_bug.cgi?id=44480">preprocessor bug</a>.</li>
|
||
<li>tcc: works just fine on Linux. Fails silently on JSLinux.</li>
|
||
</ul>
|
||
<p>For people eager to encode large files, an extra utility has been packaged
|
||
with this entry to preprocess the generated output to make them more
|
||
acceptable to typical compilers. View the <a href="cppp.cc">cppp.cc</a> source and
|
||
then compile it with a c++ compiler of your choice.</p>
|
||
<!--
|
||
|
||
Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
|
||
|
||
You are free to share and adapt this file under the terms of this license:
|
||
|
||
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
|
||
|
||
For more information, see:
|
||
|
||
https://creativecommons.org/licenses/by-sa/4.0/
|
||
|
||
-->
|
||
|
||
<!-- END: this line ends content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
|
||
<!-- START: this line starts content for HTML phase 22 by: bin/output-index-inventory.sh via bin/md2html.sh -->
|
||
|
||
<!-- START: this line starts content generated by: bin/output-index-inventory.sh -->
|
||
|
||
<h1 id="inventory-for-2020yang"><a name="inventory"></a>Inventory for 2020/yang</h1>
|
||
<p><a href="#top">Jump to top</a></p>
|
||
<h2 id="primary-files">Primary files</h2>
|
||
<ul>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/yang/prog.c">prog.c</a> - entry source</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/yang/Makefile">Makefile</a> - entry Makefile</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/yang/prog.orig.c">prog.orig.c</a> - original source</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/yang/try.sh">try.sh</a> - how to run</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/yang/cppp.cc">cppp.cc</a> - encode large file C Pre-PreProcessor source</li>
|
||
<li><a href="spoiler.html">spoiler.html</a> - SPOILER WARNING</li>
|
||
<li><a href="2020_yang.tar.bz2">2020_yang.tar.bz2</a> - download entry</li>
|
||
</ul>
|
||
<h2 id="secondary-files">Secondary files</h2>
|
||
<ul>
|
||
<li><a href="index.html">index.html</a> - entry home page</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/yang/README.md">README.md</a> - markdown source for index.html</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/yang/.entry.json">.entry.json</a> - description of entry in JSON</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/yang/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
|
||
<li><a href=".path">.path</a> - directory path from top directory</li>
|
||
</ul>
|
||
|
||
<!-- END: next line ends content generated by: bin/output-index-inventory.sh -->
|
||
|
||
<!-- END: this line ends content for HTML phase 22 by: bin/output-index-inventory.sh via bin/md2html.sh -->
|
||
<!-- START: this line starts content from: inc/after-content.default.html -->
|
||
|
||
<!-- END: this line ends content from: inc/after-content.default.html -->
|
||
<!-- START: this line starts content from: inc/end-rightcolumn.default.html -->
|
||
|
||
</div>
|
||
|
||
<!-- END: this line ends content from: inc/end-rightcolumn.default.html -->
|
||
<!-- START: this line starts content from: inc/end-row.default.html -->
|
||
|
||
</div>
|
||
|
||
<!-- END: this line ends content from: inc/end-row.default.html -->
|
||
<!-- START: this line starts content from: inc/footer.default.html -->
|
||
|
||
<!--
|
||
|
||
Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
|
||
|
||
You are free to share and adapt this file under the terms of this license:
|
||
|
||
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
|
||
|
||
For more information, see:
|
||
|
||
https://creativecommons.org/licenses/by-sa/4.0/
|
||
|
||
-->
|
||
|
||
<div class="footer">
|
||
<h2>Copyright and CC BY-SA 4.0 License</h2>
|
||
<p>This file and web page is:</p>
|
||
<blockquote><b>Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.</b></blockquote>
|
||
<p>You are free to share and adapt this file under the terms of this license:</p>
|
||
<blockquote><b>Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)</b></blockquote>
|
||
<p>For more information, see:</p>
|
||
<blockquote><a
|
||
href="https://creativecommons.org/licenses/by-sa/4.0/">https://creativecommons.org/licenses/by-sa/4.0/</a></blockquote>
|
||
<h2>Coda</h2>
|
||
<p><a href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F2020%2Fyang%2Findex.html">Nu HTML check this web page</a></p>
|
||
<p><a href="#top">Jump to top</a> <a href="#content">Jump to Content</a> <a href="#inventory">Jump to Inventory</a></p>
|
||
</div>
|
||
|
||
<!-- END: this line ends content from: inc/footer.default.html -->
|
||
<!-- START: this line starts content from: inc/bottom.default.html -->
|
||
|
||
</body>
|
||
</html>
|
||
|
||
<!-- END: this line ends content from: inc/bottom.default.html -->
|