I have a string where I need to replace a particular string, my string is as follows
string s = @"-Username ABC **-Password XYZ** -Address MNO";
string[] s1 = s.Split('-');
var newList = s1.Where(s2 =>s2.Contains("Password"));
I need to replace the string -Password XYZ to -Password **** can some one help me
Test
[TestCase("-Username ABC -Password XYZ -Address MNO", "-Username ABC -Password *** -Address MNO")]
[TestCase("-Username ABC -Password XYZ", "-Username ABC -Password ***")]
public void Test(string toTest, string expected )
{
Assert.AreEqual(expected, DestroyPassword(toTest));
}
Code
public static string DestroyPassword(string str )
{
var r = new Regex("-Password .*?($| )");//? in .net means not greedy
return r.Replace(str, "-Password ***$1");
}
EDIT:
Word of caution
This doesn't mask passwords with spaces in them. If you know that -Address is always the next token then something like this will be better:
public static string DestroyPassword(string str )
{
var r = new Regex("-Password .*?($| -Address)");//? in .net means not greedy
return r.Replace(str, "-Password ***$1");
}
but event that doesn't deal well with the case when the password contains '-Address'
You can use Regex.Replace(input, replacement). Function will replace all values found by regex expression.
string input = @"-Username ABC **-Password XYZ** -Address MNO";
string pattern = "(-Password )(\S+)";
string replacement = "$1****";
Regex regex = new Regex(pattern);
string result = regex.Replace(input, replacement);
