--style=java -n -p -c !E
astyle是一个命令行工具，命令语法很简单：
astyle [options] < original > Beautified
astyle [options] Foo.cpp Bar.cpp [...]
例如：
astyle --style=ansi foo.cpp
上面的命令将美化foo.cpp文件，更改其风格为ANSI，并将原始文件备份到foo.cpp.orgin。所以，你可以安全的使用该软件而不必担心会将代码改得无法回头。
预定风格
具体的来说，astyle包含了以下几种预定义风格，只需在参数中简单指定即可使用：
--style=ansi：ANSI 风格格式和缩进
| namespace foospace { int Foo() { if (isBar) { bar(); return 1; } else return 0; } } |
--style=kr ：Kernighan&Ritchie 风格格式和缩进
| namespace foospace { int Foo() { if (isBar) { bar(); return 1; } else return 0; } } |
--style=linux ：Linux 风格格式和缩进
| namespace foospace { int Foo() { if (isBar) { bar(); return 1; } else return 0; } } |
--style=gnu ：GNU 风格格式和缩进
| namespace foospace { int Foo() { if (isBar) { bar(); return 1; } else return 0; } } |
--style=java ：Java 风格格式和缩进
| class foospace { int Foo() { if (isBar) { bar(); return 1; } else return 0; } } |
1. 常用功能
(1) 单个文件--缺省美化
astyle --style=ansi Form1.cs
(2) 单个文件--更改缩进2个空格
astyle --style=ansi --indent=spaces=2 Form1.cs
缺省缩进一个TAB，也可以显式说明使用Tab，如下：
astyle --style=ansi --indent=tab Form1.cs
(3) 处理多个文件--有限个
astyle --style=ansi Form1.cs Form2.cs
(4) 批量处理多个文件--无限个
for /R ./ %f in (*.cs) do astyle --style=ansi "%f"
说明：/R表明遍历一个目录树，后面紧跟的路径是根，缺省为当前目录。
本例中，根为./表示当前目录，命令等价于：
for /R %f in (*.cs) do astyle --style=ansi "%f"
作用是从（目录树根）当前目录开始，查找所有java文件，包含子目录中的文件；然后交给astyle处理。
当然，目录树根也可以使用绝对路径，下面的命令查找C盘所有的java文件并处理。
for /R c:/ %f in (*.cs) do astyle --style=ansi "%f"
2. 其他比较有用的开关：
(1) -f
在两行不相关的代码之间插入空行，如import和public class之间、public class和成员之间等；
(2) -p
在操作符两边插入空格，如=、+、-等。
如：int a=10*60;
处理后变成int a = 10 * 60;
(3) -P
在括号两边插入空格。另，-d只在括号外面插入空格，-D只在里面插入。
如：MessageBox.Show ("aaa");
处理后变成MessageBox.Show ( "aaa" );
(4) -U
移除括号两边不必要的空格。
如：MessageBox.Show ( "aaa" );
处理后变成MessageBox.Show ("aaa");
(5) -V
将Tab替换为空格。
(6) -n
不保存备份
Artistic Style 1.15.3 (http://www.bigfoot.com/~davidsont/astyle)
(created by Tal Davidson, [email protected])
Modified edition by Qiongzhu Wan, 2004.09
Usage : astyle [options] < original > Beautified
astyle [options] Foo.cpp Bar.cpp [...]
When indenting a specific file, the resulting indented file RETAINS the
original file-name. The original pre-indented file is renamed, with a
suffix of ".orig" added to the original filename.
By default, astyle is set up to indent C/C++/C# files, with 4 spaces per
indent, a maximal indentation of 40 spaces inside continuous statements,
and NO formatting.
Option‘s Format:
----------------
Long options (starting with ‘--‘) must be written one at a time.
Short options (starting with ‘-‘) may be appended together.
Thus, -bps4 is the same as -b -p -s4.
Predefined Styling options:
--------------------
--style=ansi
ANSI style formatting/indenting.
--style=kr
Kernighan&Ritchie style formatting/indenting.
--style=gnu
GNU style formatting/indenting.
--style=java
Java mode, with standard java style formatting/indenting.
--style=linux
Linux mode (i.e. 8 spaces per indent, break definition-block
brackets but attach command-block brackets.
Indentation options:
--------------------
-c or --mode=c
Indent a C, C++ or C# source file (default)
-j or --mode=java
Indent a Java(TM) source file
-s or -s# or --indent=spaces=#
Indent using # spaces per indent. Not specifying #
will result in a default of 4 spacec per indent.
-t or -t# or --indent=tab=#
Indent using tab characters, assuming that each
tab is # spaces long. Not specifying # will result
in a default assumption of 4 spaces per tab.
-T# or --force-indent=tab=# Indent using tab characters, assuming tha
t each
tab is # spaces long. Force tabs to be used in areas
Astyle would prefer to use spaces.
-C or --indent-classes
Indent ‘class‘ blocks, so that the inner ‘public:‘,
‘protected:‘ and ‘private: headers are indented in
relation to the class block.
-S or --indent-switches
Indent ‘switch‘ blocks, so that the inner ‘case XXX:‘
headers are indented in relation to the switch block.
-K or --indent-cases
Indent ‘case XXX:‘ lines, so that they are flush with
their bodies..
-N or --indent-namespaces
Indent the contents of namespace blocks.
-B or --indent-brackets
Add extra indentation to ‘{‘ and ‘}‘ block brackets.
-G or --indent-blocks
Add extra indentation entire blocks (including brackets).
-L or --indent-labels
Indent labels so that they appear one indent less than
the current indentation level, rather than being
flushed completely to the left (which is the default).
-m# or --min-conditional-indent=#
Indent a minimal # spaces in a continuous conditional
belonging to a conditional header.
-M# or --max-instatement-indent=#
Indent a maximal # spaces in a continuous statement,
relatively to the previous line.
-E or --fill-empty-lines
Fill empty lines with the white space of their
previous lines.
--indent-preprocessor
Indent multi-line #define statements
Formatting options:
-------------------
-b or --brackets=break
Break brackets from pre-block code (i.e. ANSI C/C++ style).
-a or --brackets=attach
Attach brackets to pre-block code (i.e. Java/K&R style).
-l or --brackets=linux
Break definition-block brackets and attach command-block
brackets.
--brackets=break-closing-headers
Break brackets before closing headers (e.g. ‘else‘, ‘catch‘, ..).
Should be appended to --brackets=attach or --brackets=linux.
-o or --one-line=keep-statements
Don‘t break lines containing multiple statements into
multiple single-statement lines.
-O or --one-line=keep-blocks
Don‘t break blocks residing completely on one line
-p or --pad=oper
Insert space paddings around operators only.
--pad=paren
Insert space paddings around parenthesies only.
-P or --pad=all
Insert space paddings around operators AND parenthesies.
--convert-tabs
Convert tabs to spaces.
--break-blocks
Insert empty lines around unrelated blocks, labels, classes, ...
--break-blocks=all
Like --break-blocks, except also insert empty lines
around closing headers (e.g. ‘else‘, ‘catch‘, ...).
--break-elseifs
Break ‘else if()‘ statements into two different lines.
Other options:
-------------
--suffix=####
Append the suffix #### instead of ‘.orig‘ to original filename.
-X or --errors-to-standard-output
Print errors and help information to standard-output rather than
to standard-error.
-v or --version
Print version number
-h or -? or --help
Print this help message
Default options file:
---------------------
Artistic Style looks for a default options file in the
following order:
1. The contents of the ARTISTIC_STYLE_OPTIONS environment
variable if it exists.
2. The file called .astylerc in the directory pointed to by the
HOME environment variable ( i.e. $HOME/.astylerc ).
3. The file called .astylerc in the directory pointed to by the
HOMEPATH environment variable ( i.e. %HOMEPATH%/.astylerc ).
If a default options file is found, the options in this file
will be parsed BEFORE the command-line options.
Options within the default option file may be written without
the preliminary ‘-‘ or ‘--‘.