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<?xml version="1.0" encoding="ascii"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>rjsmin</title> <link rel="stylesheet" href="epydoc.css" type="text/css" /> <script type="text/javascript" src="epydoc.js"></script> </head> <body bgcolor="white" text="black" link="blue" vlink="#204080" alink="#204080">  <table class="navbar" border="0" width="100%" cellpadding="0" bgcolor="#a0c0ff" cellspacing="0"> <tr valign="middle">  <th bgcolor="#70b0f0" class="navbar-select" >   Home   </th>  <th>   <a href="module-tree.html">Trees</a>   </th>  <th>   <a href="identifier-index.html">Indices</a>   </th>  <th>   <a href="help.html">Help</a>   </th>  <th class="navbar" align="right" width="100%"> <table border="0" cellpadding="0" cellspacing="0"> <tr><th class="navbar" align="center" ><a href="http://opensource.perlig.de/rjsmin/" target="_top">Visit rjsmin Online</a></th> </tr></table></th> </tr> </table> <table width="100%" cellpadding="0" cellspacing="0"> <tr valign="top"> <td width="100%"> <span class="breadcrumbs"> Module rjsmin </span> </td> <td> <table cellpadding="0" cellspacing="0">  </table> </td> </tr> </table>  <h1 class="epydoc">Module rjsmin</h1><p class="nomargin-top"><span class="codelink"><a href="rjsmin-pysrc.html">source code</a></span></p> <p>rJSmin is a javascript minifier written in python.</p> <p>The minifier is based on the semantics of <a class="rst-reference external" href="http://www.crockford.com/javascript/jsmin.c" target="_top">jsmin.c by Douglas Crockford</a>.</p> <p>The module is a re-implementation aiming for speed, so it can be used at runtime (rather than during a preprocessing step). Usually it produces the same results as the original <tt class="rst-docutils literal">jsmin.c</tt>. It differs in the following ways:</p> <ul class="rst-simple"> <li>there is no error detection: unterminated string, regex and comment literals are treated as regular javascript code and minified as such.</li> <li>Control characters inside string and regex literals are left untouched; they are not converted to spaces (nor to n)</li> <li>Newline characters are not allowed inside string and regex literals, except for line continuations in string literals (ECMA-5).</li> <li>"return /regex/" is recognized correctly.</li> <li>Line terminators after regex literals are handled more sensibly</li> <li>"+ +" and "- -" sequences are not collapsed to '++' or '--'</li> <li>Newlines before ! operators are removed more sensibly</li> <li>Comments starting with an exclamation mark (<tt class="rst-docutils literal">!</tt>) can be kept optionally</li> <li>rJSmin does not handle streams, but only complete strings. (However, the module provides a "streamy" interface).</li> </ul> <p>Since most parts of the logic are handled by the regex engine it's way faster than the original python port of <tt class="rst-docutils literal">jsmin.c</tt> by Baruch Even. The speed factor varies between about 6 and 55 depending on input and python version (it gets faster the more compressed the input already is). Compared to the speed-refactored python port by Dave St.Germain the performance gain is less dramatic but still between 3 and 50 (for huge inputs). See the docs/BENCHMARKS file for details.</p> <p>rjsmin.c is a reimplementation of rjsmin.py in C and speeds it up even more.</p> <p>Both python 2 and python 3 are supported.</p> <hr /> <div class="fields"> <p><strong>Copyright:</strong> Copyright 2011 - 2015 André Malo or his licensors, as applicable </p> <p><strong>License:</strong> <p>Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at</p> <blockquote> <a class="rst-reference external" href="http://www.apache.org/licenses/LICENSE-2.0" target="_top">http://www.apache.org/licenses/LICENSE-2.0</a></blockquote> <p>Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.</p> </p> <p><strong>Version:</strong> 1.0.12 </p> <p><strong>Author:</strong> André Malo </p> </div> <a name="section-Functions"></a> <table class="summary" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr bgcolor="#70b0f0" class="table-header"> <td align="left" colspan="2" class="table-header"> <span class="table-header">Functions</span></td> </tr> <tr> <td width="15%" align="right" valign="top" class="summary"> <span class="summary-type"><tt class="rst-docutils literal">str</tt></span> </td><td class="summary"> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr> <td><span class="summary-sig"><a href="rjsmin-module.html#jsmin" class="summary-sig-name">jsmin</a>(<span class="summary-sig-arg">script</span>, <span class="summary-sig-arg">keep_bang_comments</span>=<span class="summary-sig-default">False</span>)</span><br /> Minify javascript based on <a class="rst-reference external" href="http://www.crockford.com/javascript/jsmin.c" target="_top">jsmin.c by Douglas Crockford</a>.</td> <td align="right" valign="top"> <span class="codelink"><a href="rjsmin-pysrc.html#jsmin">source code</a></span> </td> </tr> </table> </td> </tr> </table>  <a name="section-FunctionDetails"></a> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr bgcolor="#70b0f0" class="table-header"> <td align="left" colspan="2" class="table-header"> <span class="table-header">Function Details</span></td> </tr> </table> <a name="jsmin"></a> <div> <table class="details" border="1" cellpadding="3" cellspacing="0" width="100%" bgcolor="white"> <tr><td> <table width="100%" cellpadding="0" cellspacing="0" border="0"> <tr valign="top"><td> <h3 class="epydoc"><span class="sig"><span class="sig-name">jsmin</span>(<span class="sig-arg">script</span>, <span class="sig-arg">keep_bang_comments</span>=<span class="sig-default">False</span>)</span> </h3> </td><td align="right" valign="top" ><span class="codelink"><a href="rjsmin-pysrc.html#jsmin">source code</a></span>  </td> </tr></table> <p>Minify javascript based on <a class="rst-reference external" href="http://www.crockford.com/javascript/jsmin.c" target="_top">jsmin.c by Douglas Crockford</a>.</p> <p>Instead of parsing the stream char by char, it uses a regular expression approach which minifies the whole script with one big substitution regex.</p> <dl class="fields"> <dt>Parameters:</dt> <dd><ul class="nomargin-top"> <li><strong class="pname"><code>script</code></strong> (<tt class="rst-docutils literal">str</tt>) - Script to minify</li> <li><strong class="pname"><code>keep_bang_comments</code></strong> (<tt class="rst-docutils literal">bool</tt>) - Keep comments starting with an exclamation mark? (<tt class="rst-docutils literal"><span class="pre">/*!...*/</span></tt>)</li> </ul></dd> <dt>Returns: <tt class="rst-docutils literal">str</tt></dt> <dd>Minified script</dd> </dl> </td></tr></table> </div> <br />  <table class="navbar" border="0" width="100%" cellpadding="0" bgcolor="#a0c0ff" cellspacing="0"> <tr valign="middle">  <th bgcolor="#70b0f0" class="navbar-select" >   Home   </th>  <th>   <a href="module-tree.html">Trees</a>   </th>  <th>   <a href="identifier-index.html">Indices</a>   </th>  <th>   <a href="help.html">Help</a>   </th>  <th class="navbar" align="right" width="100%"> <table border="0" cellpadding="0" cellspacing="0"> <tr><th class="navbar" align="center" ><a href="http://opensource.perlig.de/rjsmin/" target="_top">Visit rjsmin Online</a></th> </tr></table></th> </tr> </table> <script type="text/javascript">  </script> </body> </html>