# yuicompressor

**Repository Path**: 635050/yuicompressor

## Basic Information

- **Project Name**: yuicompressor
- **Description**: cssjs压缩
- **Primary Language**: Java
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2016-02-09
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

YUI Compressor -雅虎JavaScript和CSS压缩机
=========================================================
YUI Compressor是JavaScript压缩机，其中，除了删除注释和白空格，混淆使用最小可能的变量名的局部变量。这个模糊处理是安全的，采用的结构，如'的eval'或'与'（尽管在压缩不是最佳的是那些情况下）相比jsmin即使当，平均储蓄是20％左右。

 YUI的压缩机也能够安全地压缩CSS文件。在其上使用的压缩机上的文件扩展名（JS或CSS）被作出的决定



建造
--------

    ant

Testing
-------

    ./tests/suite.sh


Node.js Package
---------------

您可以在Node.js的包装要求压缩机在异步压缩文件和字符串。
_It still uses Java under the hood_

    npm i yuicompressor

```javascript

var compressor = require('yuicompressor');

compressor.compress('/path/to/file or String of JS', {
    //压缩选项:
    charset: 'utf8',
    type: 'js',
    nomunge: true,
    'line-break': 80
}, function(err, data, extra) {
    //err   如果压缩机遇到错误，它的标准错误会在这里
    //data  压缩后的字符串，你写出来，你想让它
    //extra The stderr (warnings are printed here in case you want to echo them
});

```

Options:
* `charset` // defaults to 'utf8'
* `type` // defaults to 'js'
* `line-break`
* `nomunge`
* `preserve-semi`
* `disable-optimizations`


TODO
----

* Better Docs
* Help Pages

Build Status
------------

[![Build Status](https://secure.travis-ci.org/yui/yuicompressor.svg?branch=master)](http://travis-ci.org/yui/yuicompressor)


Global Options
--------------

    -h, --help
        Prints help on how to use the YUI Compressor

    --line-break
        Some source control tools don't like files containing lines longer than,
        say 8000 characters. The linebreak option is used in that case to split
        long lines after a specific column. It can also be used to make the code
        more readable, easier to debug (especially with the MS Script Debugger)
        Specify 0 to get a line break after each semi-colon in JavaScript, and
        after each rule in CSS.

    --type js|css
        The type of compressor (JavaScript or CSS) is chosen based on the
        extension of the input file name (.js or .css) This option is required
        if no input file has been specified. Otherwise, this option is only
        required if the input file extension is neither 'js' nor 'css'.

    --charset character-set
        If a supported character set is specified, the YUI Compressor will use it
        to read the input file. Otherwise, it will assume that the platform's
        default character set is being used. The output file is encoded using
        the same character set.

    -o outfile

        Place output in file outfile. If not specified, the YUI Compressor will
        default to the standard output, which you can redirect to a file.
        Supports a filter syntax for expressing the output pattern when there are
        multiple input files.  ex:
            java -jar yuicompressor.jar -o '.css$:-min.css' *.css
        ... will minify all .css files and save them as -min.css

    -v, --verbose
        Display informational messages and warnings.

JavaScript Only Options
-----------------------

    --nomunge
        Minify only. Do not obfuscate local symbols.

    --preserve-semi
        Preserve unnecessary semicolons (such as right before a '}') This option
        is useful when compressed code has to be run through JSLint (which is the
        case of YUI for example)

    --disable-optimizations
        Disable all the built-in micro optimizations.

Notes
-----

* If no input file is specified, it defaults to stdin.

* Supports wildcards for specifying multiple input files.

* The YUI Compressor requires Java version >= 1.5.

* It is possible to prevent a local variable, nested function or function
argument from being obfuscated by using "hints". A hint is a string that
is located at the very beginning of a function body like so:
    
```
function fn (arg1, arg2, arg3) {
    "arg2:nomunge, localVar:nomunge, nestedFn:nomunge";

    ...
    var localVar;
    ...

    function nestedFn () {
        ....
    }

    ...
}
```
The hint itself disappears from the compressed file.

* C-style comments starting with `/*!` are preserved. This is useful with
    comments containing copyright/license information. As of 2.4.8, the '!'
    is no longer dropped by YUICompressor. For example:

```
/*!
 * TERMS OF USE - EASING EQUATIONS
 * Open source under the BSD License.
 * Copyright 2001 Robert Penner All rights reserved.
 */
```

remains in the output, untouched by YUICompressor.

Modified Rhino Files
--------------------

锐压缩机使用犀牛库的修改版本 （http://www.mozilla.org/rhino/）进行了更改，以支持 JScript的条件注释，保存注释，转义斜杠 在正则表达式的字符，并允许优化 逃脱的字符串引号。
Copyright And License
---------------------

Copyright (c) 2013 Yahoo! Inc.  All rights reserved.
The copyrights embodied in the content of this file are licensed
by Yahoo! Inc. under the BSD (revised) open source license.