问正则表达式以匹配to脚本中的所有注释

EN

(--.*)|(((/\*)+?[\w\W]+?(\*/)+))

trim( preg_replace( '@
(([\'"]).*?[^\\\]\2) # $1 : Skip single & double quoted expressions
|(                   # $3 : Match comments
    (?:\#|--).*?$    # - Single line comment
    |                # - Multi line (nested) comments
     /\*             #   . comment open marker
        (?: [^/*]    #   . non comment-marker characters
            |/(?!\*) #   . not a comment open
            |\*(?!/) #   . not a comment close
            |(?R)    #   . recursive case
        )*           #   . repeat eventually
    \*\/             #   . comment close marker
)\s*                 # Trim after comments
|(?<=;)\s+           # Trim after semi-colon
@msx', '$1', $sql ) );

trim( preg_replace( '@(([\'"]).*?[^\\\]\2)|((?:\#|--).*?$|/\*(?:[^/*]|/(?!\*)|\*(?!/)|(?R))*\*\/)\s*|(?<=;)\s+@ms', '$1', $sql ) );

StringCollection resultList = new StringCollection(); 
try {
Regex regexObj = new Regex(@"/\*(?>(?:(?!\*/|/\*).)*)(?>(?:/\*(?>(?:(?!\*/|/\*).)*)\*/(?>(?:(?!\*/|/\*).)*))*).*?\*/|--.*?\r?[\n]", RegexOptions.Singleline);
Match matchResult = regexObj.Match(subjectString);
while (matchResult.Success) {
    resultList.Add(matchResult.Value);
    matchResult = matchResult.NextMatch();
} 
} catch (ArgumentException ex) {
// Syntax error in the regular expression
}

-- This is Comment 1
SELECT Foo FROM Bar
GO

-- This is
-- Comment 2
UPDATE Bar SET Foo == 'Foo'
GO

/* This is Comment 3 */
DELETE FROM Bar WHERE Foo = 'Foo'

/* This is a
multi-line comment */
DROP TABLE Bar

/* comment /* nesting */ of /* two */ levels supported */
foo...

-- This is Comment 1
-- This is
-- Comment 2
/* This is Comment 3 */
/* This is a
multi-line comment */
/* comment /* nesting */ of /* two */ levels supported */