private void AddFragment(FragmentDTO fragment)
{
if (fragment.IsQuoted || fragment.IsSignature || IsEmpty(fragment))
{
fragment.IsHidden = true;
}
fragments.Add(fragment);
}
private Email ParseImpl(string text)
{
text = RegexLinefeedWithCarriage.Replace(text, "\n");
text = quoteHeadersRegex.Aggregate(text, (sourceText, regex) =>
{
var matches = regex.Match(sourceText);
if (matches.Success)
{
var replaceBy = matches.Groups[1].Value.Replace("\n", " ");
sourceText = sourceText.Replace(matches.Groups[1].Value, replaceBy);
}
return(sourceText);
});
FragmentDTO fragment = null;
foreach (var newLine in StringReverse(text).Split(new[] { "\n" }, StringSplitOptions.None))
{
var line = StringRTrim(newLine, '\n');
if (!IsSignature(line))
{
line = StringLTrim(line);
}
if (fragment != null)
{
var last = fragment.Lines[fragment.Lines.Count - 1];
if (IsSignature(last))
{
fragment.IsSignature = true;
AddFragment(fragment);
fragment = null;
}
else if (line == "" && IsQuoteHeader(last))
{
fragment.IsQuoted = true;
AddFragment(fragment);
fragment = null;
}
}
var isQuoted = IsQuote(line);
if (fragment == null || !IsFragmentLine(fragment, line, isQuoted))
{
if (fragment != null)
{
AddFragment(fragment);
}
fragment = new FragmentDTO {
IsQuoted = isQuoted
};
}
fragment.Lines.Add(line);
}
if (fragment != null)
{
AddFragment(fragment);
}
var email = CreateEmail(fragments);
return(email);
}
private bool IsFragmentLine(FragmentDTO fragment, string line, bool isQuoted)
{
return(fragment.IsQuoted == isQuoted ||
fragment.IsQuoted && (IsQuoteHeader(line) || line == ""));
}
private static bool IsEmpty(FragmentDTO fragment)
{
return("".Equals(string.Join("", fragment.Lines), StringComparison.Ordinal));
}