regex - Regex to add missing space after comma before argument in functions (to meet coding guidelines)

Question

there is an open source php project i would like to contribute by reducing some coding guidline violations. as there are about 5000 violations for a specific sniff i guess it would be appropriate to use some regex.

the coding guidline rule is called "FunctionCallArgumentSpacingNoSpaceAfterComma". this means that all arguemts should be separated by a comma followed by a space.

these example snippets violate this rule:

$this->message('About', 'Warning, very important!', $this->securityRisk().$this->alterPasswordForm(),2);
$sFiles = t3lib_div::getFilesInDir(PATH_typo3conf,'sql',1,1);
if (!strstr(implode(',',$sFiles).',', '/database.sql,')) {

can anybody help in creating a useful regex to fix these coding guidline violations? i tried some hours but i am unfortunately not capable to solve this on my own.

Answer 1

我会尝试的第一件事是这样的：

sed 's/,\([^ ]\)/, \1/g' someFile.php

将逗号后跟非空格的逗号替换为逗号、空格和逗号后的字符。

在考虑了片刻之后，这可能有点工作。

但一定有很多我没有想到的事情......

Answer 2

您不能使用正则表达式安全/可靠地执行此操作。在某些语言中，您甚至无法可靠地跳过过去的字符串文字（考虑 Perl 的q语法；尤其是它如何处理它认为是“括号”字符的内容）。即使忽略这些，如果代码库中有多种语言（例如 PHP、Java 和 Perl 中的字符串/字符文字之间存在细微差异），您也会遇到麻烦。