我正在尝试使用正则表达式从我的 tnsnames 文件中提取一些信息。我从以下模式开始:
MYSCHEMA *? = *?[\W\w\S\s]*\(HOST *?= *?(?<host>\w+\s?)\)\s?\(PORT *?= *?(?<port>\d+)\s?\)[\W\w\S\s]*\(SERVICE_NAME *?= *?(?<servicename>\w+)\s?\)
当 MYSCHEMA 是文件中唯一的模式时,它工作正常,但是当 MYSCHEMA 之后列出其他模式时,它一直匹配到最后一个模式。
我已经创建了一个新模式:
MYSCHEMA *=\s*\(DESCRIPTION =\s*\(ADDRESS *= *\(PROTOCOL *= *TCP\)\(HOST *= *(?<host>\w+)\)\(PORT *= *(?<port>\d+)\)\)\s*\(CONNECT_DATA *=\s*(?<serverdedicated>\(SERVER *= *DEDICATED\))\s*\(SERVICE_NAME *= *(?<servicename>[\w\.]+) *\)\s*\)\s*\)
此模式仅匹配 MYSCHEMA,但我必须添加出现在 MYSCHEMA 条目中的每个元素,如果它不包含所有相同的元素,它将不会匹配 MYOTHERSCHEMA。
理想情况下,我想要一个只匹配 MYSCHEMA 条目的模式,并捕获 HOST、PORT 和 SERVICE NAME,并且可选地 (SERVER = DEDICATED)(我在第一个模式中没有)到命名组。
下面是我一直用于测试的示例 tnsnames:
SOMESCHEMA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = REMOTEHOST)(PORT = 1234))
)
(CONNECT_DATA = (SERVICE_NAME = REMOTE)
)
)
MYSCHEMA =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = MYHOST)(PORT = 1234))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = MYSERVICE.LOCAL )
)
)
MYOTHERSCHEMA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = MYHOST)(PORT = 1234))
)
(CONNECT_DATA =
(SERVICE_NAME = MYSERVICE.REMOTE)
)
)
SOMEOTHERSCHEMA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = LOCALHOST)(PORT = 1234))
)
(CONNECT_DATA =
(SERVICE_NAME = LOCAL)
)
)
最佳答案
这应该可以做到,使用平衡组。并根据您的需要修改开关/外壳。
class TnsRegex
{
public void Test()
{
Regex reTns = new Regex(_pattern, RegexOptions.Singleline | RegexOptions.IgnorePatternWhitespace);
MatchCollection matchCollection = reTns.Matches(_text);
foreach (Match match in matchCollection)
{
foreach (Capture capture in match.Groups["Settings"].Captures)
{
string[] setting = capture.Value.Split(new[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
string key = setting[0].Trim();
string val = setting[1].Trim();
if (val.Contains("(")) continue;
switch (key)
{
case "HOST":
break;
case "PORT":
break;
case "SERVICE_NAME":
break;
case "SERVER":
break;
}
Console.WriteLine(key + ":" + val);
}
}
}
string _pattern = @"
MYSCHEMA\s+=\s+\(
[^\(\)]*
(
(
(?<Open>\()
[^\(\)]*
)+
(
(?<Settings-Open>\))
[^\(\)]*
)+
)*
(?(Open)(?!))
\)";
string _text = @"
MYSCHEMA =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = MYHOST)(PORT = 1234))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = MYSERVICE.LOCAL )
)
)
SOMESCHEMA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = REMOTEHOST)(PORT = 1234))
)
(CONNECT_DATA = (SERVICE_NAME = REMOTE)
)
)
";
}
关于c# - 使用正则表达式解析 tnsnames.ora,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/3549863/