正则表达式以满足以下要求 [英] Regular expression for following requirement.

问题描述

我正在使用以下正则表达式来匹配函数。

I am using following regular expression for matching function.

FINDFUNC_RE = re.search('^\s*(?:(?:inline|static)\s+){0,2}(?!else|typedef|return)\w+\s+\*?\s*(\w+)\s*\([^0]+\s*?', Line)

如果行是这样的话，它会正确匹配：

It correctly matches if line is like this:

static int abc(int a)

但是如果该行是像这样（返回类型后包含*）：

But it does not matches if the line is like this(Contain * after return type):

static int* abc(int a)

如何正确匹配两个字符串？



我尝试过：

How to match both string correctly?

What I have tried:

<pre>FINDFUNC_RE = re.search('^\s*(?:(?:inline|static)\s*+){0,2}(?!else|typedef|return)\w+\s+\*?\s*(\w+)\s*\([^0]+\s*?', Line)

我在正则表达式中添加*但它不起作用。

I have added * in regex but it does not work.

推荐答案

Quote：

我在正则表达式中添加*但它不起作用。

I have added * in regex but it does not work.

按照RegEx定义， * 是RegEx中的一个特殊字符，为了匹配它必须将其转义为 \ *

我得到它，原始RegEx，空间必须是可选的：

As per RegEx definition, * is a special char in a RegEx, to match it one must escape it as \*
I got it, from original RegEx, the space must be optional:

^\s*(?:(?:inline|static)\s+){0,2}(?!else|typedef|return)\w+\s+\*?\s*(\w+)\s*\([^0]+\s*?
                                                           ^^^
                                                           \s*

只是一些有趣的链接帮助构建和调试RegEx。

以下是RegEx文档的链接：

perlre - perldoc.perl.org [ ^ ]

以下是帮助构建RegEx并调试它们的工具的链接：

.NET Regex Tester - Regex Storm [ ^ ]

Expresso正则表达式工具 [ ^ ]

RegExr：Learn，Build，&测试RegEx [ ^ ]

在线正则表达式测试器和调试器：PHP，PCRE，Python，Golang和JavaScript [ ^ ]

这个显示RegEx是一个很好的图表，它非常有助于理解RegEx的作用：

Debuggex：在线可视正则表达式测试器。 JavaScript，Python和PCRE。 [ ^ ]

这个网站也在一个漂亮的图表中显示正则表达式，但无法测试与RegEx匹配的内容：

Regexper [ ^ ]

Just a few interesting links to help building and debugging RegEx.
Here is a link to RegEx documentation:
perlre - perldoc.perl.org[^]
Here is links to tools to help build RegEx and debug them:
.NET Regex Tester - Regex Storm[^]
Expresso Regular Expression Tool[^]
RegExr: Learn, Build, & Test RegEx[^]
Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript[^]
This one show you the RegEx as a nice graph which is really helpful to understand what is doing a RegEx:
Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]
This site also show the Regex in a nice graph but can't test what match the RegEx:
Regexper[^]

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