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| -.. -*- coding: utf-8 -*-
|
| -
|
| -===========================================
|
| - rJSmin - A Javascript Minifier For Python
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| -===========================================
|
| -
|
| -TABLE OF CONTENTS
|
| ------------------
|
| -
|
| -1. Introduction
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| -2. Copyright and License
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| -3. System Requirements
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| -4. Installation
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| -5. Documentation
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| -6. Bugs
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| -7. Author Information
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| -
|
| -
|
| -INTRODUCTION
|
| -------------
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| -
|
| -rJSmin is a javascript minifier written in python.
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| -
|
| -The minifier is based on the semantics of `jsmin.c by Douglas Crockford`_\.
|
| -
|
| -The module is a re-implementation aiming for speed, so it can be used at
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| -runtime (rather than during a preprocessing step). Usually it produces the
|
| -same results as the original ``jsmin.c``. It differs in the following ways:
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| -
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| -- there is no error detection: unterminated string, regex and comment
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| - literals are treated as regular javascript code and minified as such.
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| -- Control characters inside string and regex literals are left untouched; they
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| - are not converted to spaces (nor to \\n)
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| -- Newline characters are not allowed inside string and regex literals, except
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| - for line continuations in string literals (ECMA-5).
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| -- "return /regex/" is recognized correctly.
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| -- "+ +" and "- -" sequences are not collapsed to '++' or '--'
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| -- Newlines before ! operators are removed more sensibly
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| -- Comments starting with an exclamation mark (``!``) can be kept optionally
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| -- rJSmin does not handle streams, but only complete strings. (However, the
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| - module provides a "streamy" interface).
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| -
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| -Since most parts of the logic are handled by the regex engine it's way faster
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| -than the original python port of ``jsmin.c`` by Baruch Even. The speed factor
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| -varies between about 6 and 55 depending on input and python version (it gets
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| -faster the more compressed the input already is). Compared to the
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| -speed-refactored python port by Dave St.Germain the performance gain is less
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| -dramatic but still between 3 and 50 (for huge inputs). See the docs/BENCHMARKS
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| -file for details.
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| -
|
| -rjsmin.c is a reimplementation of rjsmin.py in C and speeds it up even more.
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| -
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| -.. _jsmin.c by Douglas Crockford: http://www.crockford.com/javascript/jsmin.c
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| -
|
| -
|
| -COPYRIGHT AND LICENSE
|
| ----------------------
|
| -
|
| -Copyright 2011 - 2014
|
| -André Malo or his licensors, as applicable.
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| -
|
| -The whole package (except for the files in the bench/ directory)
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| -is distributed under the Apache License Version 2.0. You'll find a copy in the
|
| -root directory of the distribution or online at:
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| -<http://www.apache.org/licenses/LICENSE-2.0>.
|
| -
|
| -
|
| -SYSTEM REQUIREMENTS
|
| --------------------
|
| -
|
| -Both python 2 (>=2.4) and python 3 are supported.
|
| -
|
| -
|
| -INSTALLATION
|
| -------------
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| -
|
| -Using pip
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| -~~~~~~~~~
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| -
|
| -$ pip install rjsmin
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| -
|
| -
|
| -Using distutils
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| -~~~~~~~~~~~~~~~
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| -
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| -$ python setup.py install
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| -
|
| -The following extra options to the install command may be of interest:
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| -
|
| - --without-c-extensions Don't install C extensions
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| - --without-docs Do not install documentation files
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| -
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| -
|
| -Drop-in
|
| -~~~~~~~
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| -
|
| -rJSmin effectively consists of two files: rjsmin.py and rjsmin.c, the
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| -latter being entirely optional. So, for simple integration you can just
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| -copy rjsmin.py into your project and use it.
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| -
|
| -
|
| -DOCUMENTATION
|
| --------------
|
| -
|
| -A generated API documentation is available in the docs/apidoc/ directory.
|
| -But you can just look into the module. It provides a simple function,
|
| -called jsmin which takes the script as a string and returns the minified
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| -script as a string.
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| -
|
| -The module additionally provides a "streamy" interface similar to the one
|
| -jsmin.c provides:
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| -
|
| -$ python -mrjsmin <script >minified
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| -
|
| -It takes two options:
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| -
|
| - -b Keep bang-comments (Comments starting with an exclamation mark)
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| - -p Force using the python implementation (not the C implementation)
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| -
|
| -The latest documentation is also available online at
|
| -<http://opensource.perlig.de/rjsmin/>.
|
| -
|
| -
|
| -BUGS
|
| -----
|
| -
|
| -No bugs, of course. ;-)
|
| -But if you've found one or have an idea how to improve rjsmin, feel free
|
| -to send a pull request on `github <https://github.com/ndparker/rjsmin>`_
|
| -or send a mail to <rjsmin-bugs@perlig.de>.
|
| -
|
| -
|
| -AUTHOR INFORMATION
|
| -------------------
|
| -
|
| -André "nd" Malo <nd@perlig.de>
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| -GPG: 0x8103A37E
|
| -
|
| -
|
| - If God intended people to be naked, they would be born that way.
|
| - -- Oscar Wilde
|
|
|