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| 1 ===================== | |
| 2 Javascript Minifier | |
| 3 ===================== | |
| 4 | |
| 5 rJSmin is a javascript minifier written in python. | |
| 6 | |
| 7 The minifier is based on the semantics of `jsmin.c by Douglas Crockford`_\. | |
| 8 | |
| 9 The module is a re-implementation aiming for speed, so it can be used at | |
| 10 runtime (rather than during a preprocessing step). Usually it produces the | |
| 11 same results as the original ``jsmin.c``. It differs in the following ways: | |
| 12 | |
| 13 - there is no error detection: unterminated string, regex and comment | |
| 14 literals are treated as regular javascript code and minified as such. | |
| 15 - Control characters inside string and regex literals are left untouched; they | |
| 16 are not converted to spaces (nor to \n) | |
| 17 - Newline characters are not allowed inside string and regex literals, except | |
| 18 for line continuations in string literals (ECMA-5). | |
| 19 - "return /regex/" is recognized correctly. | |
| 20 - "+ +" and "- -" sequences are not collapsed to '++' or '--' | |
| 21 - Newlines before ! operators are removed more sensibly | |
| 22 - Comments starting with an exclamation mark (``!``) can be kept optionally | |
| 23 - rJSmin does not handle streams, but only complete strings. (However, the | |
| 24 module provides a "streamy" interface). | |
| 25 | |
| 26 Since most parts of the logic are handled by the regex engine it's way faster | |
| 27 than the original python port of ``jsmin.c`` by Baruch Even. The speed factor | |
| 28 varies between about 6 and 55 depending on input and python version (it gets | |
| 29 faster the more compressed the input already is). Compared to the | |
| 30 speed-refactored python port by Dave St.Germain the performance gain is less | |
| 31 dramatic but still between 3 and 50 (for huge inputs)). See the | |
| 32 docs/BENCHMARKS file for details. | |
| 33 | |
| 34 rjsmin.c is a reimplementation of rjsmin.py in C and speeds it up even more. | |
| 35 | |
| 36 Both python 2 (>=2.4) and python 3 are supported. | |
| 37 | |
| 38 .. _jsmin.c by Douglas Crockford: http://www.crockford.com/javascript/jsmin.c | |
| 39 | |
| 40 | |
| 41 Copyright and License | |
| 42 ~~~~~~~~~~~~~~~~~~~~~ | |
| 43 | |
| 44 Copyright 2011 - 2014 | |
| 45 André Malo or his licensors, as applicable. | |
| 46 | |
| 47 The whole package (except for the files in the bench/ directory) is | |
| 48 distributed under the Apache License Version 2.0. You'll find a copy in the | |
| 49 root directory of the distribution or online at: | |
| 50 <http://www.apache.org/licenses/LICENSE-2.0>. | |
| 51 | |
| 52 | |
| 53 Bugs | |
| 54 ~~~~ | |
| 55 | |
| 56 No bugs, of course. ;-) | |
| 57 But if you've found one or have an idea how to improve rjsmin, feel free | |
| 58 to send a pull request on `github <https://github.com/ndparker/rjsmin>`_ | |
| 59 or send a mail to <rjsmin-bugs@perlig.de>. | |
| 60 | |
| 61 | |
| 62 Author Information | |
| 63 ~~~~~~~~~~~~~~~~~~ | |
| 64 | |
| 65 André "nd" Malo <nd perlig.de> | |
| 66 GPG: 0x8103A37E | |
| 67 | |
| 68 | |
| 69 If God intended people to be naked, they would be born that way. | |
| 70 -- Oscar Wilde | |
| 71 | |
| 72 .. vim:tw=72 syntax=rest | |
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Chromium Code Reviews
Issue 1376953005:
Move tracing/third_party/tvcm -> third_party/py_vulcanize. (Closed)
Base URL: git@github.com:catapult-project/catapult.git@master