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POTwitter text compression challenge
 

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    <h3>Rules</h3> <ol> <li>Your program must have two modes: <strong>encoding</strong> and <strong>decoding</strong>.</li> <li><p>When <strong>encoding</strong>:</p> <ol> <li>Your program must take as input some human readable <code>Latin1</code> text, presumably English. <ul> <li>It doesn't matter if you ignore punctuation marks.</li> <li>You only need to worry about actual English words, not L337.</li> <li>Any accented letters may be converted to simple ASCII.</li> <li>You may choose how you want to deal with numbers.</li> <li>123 <ul> <li>one two three</li> <li>one hundred twenty three</li> <li>123</li> <li>1 2 3</li> </ul></li> <li>one hundred twenty three <ul> <li>one two three</li> <li>one hundred twenty three</li> <li>123</li> <li>1 2 3</li> </ul></li> </ul></li> <li><p>Your program must output a message which can be represented in</p> <ul> <li><p>140 code points in the range <code>U+0000</code>–<code>U+10FFFF</code></p> <p>Excluding non-characters:</p> <ul> <li><code>U+FFFE</code></li> <li><code>U+FFFF</code></li> <li><code>U+</code><em><code>n</code></em><code>FFFE</code>, <code>U+</code><em><code>n</code></em><code>FFFF</code> where <em><code>n</code></em> is <code>1</code>–<code>10</code> hexadecimal</li> <li><code>U+FDD0</code>–<code>U+FDEF</code></li> <li><code>U+D800</code>–<code>U+DFFF</code> (surrogate code points).</li> </ul></li> </ul></li> </ol> <p>It may be output in any reasonable encoding of your choice; any encoding supported by <a href="http://www.gnu.org/software/libiconv/" rel="nofollow noreferrer">GNU <code>iconv</code></a> will be considered reasonable, and your platform native encoding or locale encoding would likely be a good choice.</p></li> <li><p>When <strong>decoding</strong>:</p> <ol> <li>Your program should take as input the output of your <strong>encoding</strong> mode.</li> <li>The text output should be an approximation of the input text. <ul> <li>The closer you can get to the original text, the better.</li> <li>Doesn't need to have any punctuation.</li> </ul></li> <li><p>The output text should be readable by a human, again presumably English.</p> <ul> <li>Can be L337, or lol.</li> </ul></li> <li>The decoding process may have no access to any other output of the encoding process other than the output specified above; that is, you can't upload the text somewhere and output the URL for the decoding process to download, or anything silly like that.</li> </ol></li> <li>For the sake of consistency in user interface, your program must behave as follows: <ol> <li>Your program must be a script that can be set to executable on a platform with the appropriate interpreter, or a program that can be compiled into an executable.</li> <li>Your program must take as its first argument either <code>encode</code> or <code>decode</code> to set the mode.</li> <li>Your program must take input in at least one of the following ways: <ul> <li>Take input from standard in and produce output on standard out. <ul> <li><code>my-program encode &lt;input.txt &gt;output.utf</code></li> <li><code>my-program decode &lt;output.utf &gt;output.txt</code></li> </ul></li> <li>Take input from a file named in the second argument, and produce output in the file named in the third. <ul> <li><code>my-program encode input.txt output.utf</code></li> <li><code>my-program decode output.utf output.txt</code></li> </ul></li> </ul></li> </ol></li> <li>For your solution, please post: <ol> <li>Your code, in full, and/or a link to it hosted elsewhere (if it's very long, or requires many files to compile, or something).</li> <li>An explanation of how it works, if it's not immediately obvious from the code or if the code is long and people will be interested in a summary.</li> <li>An example text, with the original text, the text it compresses down to, and the decoded text.</li> <li>If you are building on an idea that someone else had, please attribute them. It's OK to try to do a refinement of someone else's idea, but you <strong>must</strong> attribute them.</li> </ol></li> </ol> <p>The rules are a variation on the rules for <a href="https://stackoverflow.com/questions/891643/twitter-image-encoding-challenge"><strong>Twitter image encoding challenge</strong></a>.</p>
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    1. COSMAZ (http://github.com/antirez/smaz/tree/master) + BASE64 - what did I win?
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    2. COPlease make this a Community Wiki. You've got some pending close votes, presumably because it's not.
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    3. COVoting to reopen on the assumption that Brad Gilbert will make this community wiki
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