public string MaskSecrets(string input)
{
if (string.IsNullOrEmpty(input))
{
return(string.Empty);
}
// get indexes and lengths of all substrings that will be replaced
var positionsToReplace = new List <ReplacementPosition>();
foreach (KeyValuePair <string, RegexSecret> pair in _regexSecrets) // This is faster than calling .Values.
{
positionsToReplace.AddRange(pair.Value.GetPositions(input));
}
foreach (KeyValuePair <string, ValueSecret> pair in _valueSecrets) // This is faster than calling .Values.
{
positionsToReplace.AddRange(pair.Value.GetPositions(input));
}
// short-circuit if nothing to replace
if (positionsToReplace.Count == 0)
{
return(input);
}
// merge positions into ranges of characters to replace
List <ReplacementPosition> replacementPositions = new List <ReplacementPosition>();
ReplacementPosition currentReplacement = null;
foreach (var substring in positionsToReplace.OrderBy(t => t.Start))
{
if (currentReplacement == null)
{
currentReplacement = new ReplacementPosition(substring.Start, substring.Length);
replacementPositions.Add(currentReplacement);
}
else
{
if (substring.Start <= currentReplacement.End)
{
// overlap
currentReplacement.Length = Math.Max(currentReplacement.End, substring.Start + substring.Length) - currentReplacement.Start;
}
else
{
// no overlap
currentReplacement = new ReplacementPosition(substring.Start, substring.Length);
replacementPositions.Add(currentReplacement);
}
}
}
// replace
var stringBuilder = new StringBuilder();
int startIndex = 0;
foreach (var replacement in replacementPositions)
{
stringBuilder.Append(input.Substring(startIndex, replacement.Start - startIndex));
stringBuilder.Append(Mask);
startIndex = replacement.Start + replacement.Length;
}
if (startIndex < input.Length)
{
stringBuilder.Append(input.Substring(startIndex));
}
return(stringBuilder.ToString());
}
public string MaskSecrets(string input)
{
if (string.IsNullOrEmpty(input))
{
return string.Empty;
}
// get indexes and lengths of all substrings that will be replaced
var positionsToReplace = new List<ReplacementPosition>();
foreach (KeyValuePair<string, RegexSecret> pair in _regexSecrets) // This is faster than calling .Values.
{
positionsToReplace.AddRange(pair.Value.GetPositions(input));
}
foreach (KeyValuePair<string, ValueSecret> pair in _valueSecrets) // This is faster than calling .Values.
{
positionsToReplace.AddRange(pair.Value.GetPositions(input));
}
// short-circuit if nothing to replace
if (positionsToReplace.Count == 0)
{
return input;
}
// merge positions into ranges of characters to replace
List<ReplacementPosition> replacementPositions = new List<ReplacementPosition>();
ReplacementPosition currentReplacement = null;
foreach (var substring in positionsToReplace.OrderBy(t => t.Start))
{
if (currentReplacement == null)
{
currentReplacement = new ReplacementPosition(substring.Start, substring.Length);
replacementPositions.Add(currentReplacement);
}
else
{
if (substring.Start <= currentReplacement.End)
{
// overlap
currentReplacement.Length = Math.Max(currentReplacement.End, substring.Start + substring.Length) - currentReplacement.Start;
}
else
{
// no overlap
currentReplacement = new ReplacementPosition(substring.Start, substring.Length);
replacementPositions.Add(currentReplacement);
}
}
}
// replace
var stringBuilder = new StringBuilder();
int startIndex = 0;
foreach (var replacement in replacementPositions)
{
stringBuilder.Append(input.Substring(startIndex, replacement.Start - startIndex));
stringBuilder.Append(Constants.SecretMask);
startIndex = replacement.Start + replacement.Length;
}
if (startIndex < input.Length)
{
stringBuilder.Append(input.Substring(startIndex));
}
return stringBuilder.ToString();
}