public void Parse(string ruleset)
{
int rlen = ruleset.Length;
int lineCount = 0;
for (int i = 0; i < ruleset.Length; i++)
{
if (ruleset[i] == '\n')
{
lineCount++;
}
}
blackDomainList = new List <SubRange>(lineCount / 2);
blackWildcardDomainList = new List <SubRange>();
blackRegexUrlList = new List <Regex>();
blackWildcardUrlList = new List <SubRange>(lineCount / 2);
whiteDomainList = new List <SubRange>();
whiteWildcardDomainList = new List <SubRange>();
whiteRegexUrlList = new List <Regex>();
whiteWildcardUrlList = new List <SubRange>();
if (rlen > 1024)
{
resultCache = new Dictionary <string, bool>(32);
resultCacheLock = new ReaderWriterLockSlim();
computingLocks = new Dictionary <string, ManualResetEvent>();
}
var bssb = new StringBuilder(ruleset.Length);
RulesCount = 0;
int cur = 0;
int lineNum = 0;
while (cur < rlen)
{
var begin = cur;
while (cur < rlen && ruleset[cur++] != '\n')
{
}
var line = new SubString()
{
str = ruleset,
Offset = begin,
Length = cur - begin
};
lineNum++;
line.TrimSelf();
if (line.Length == 0)
{
continue;
}
var firstCh = line[0];
if (firstCh == '!' || firstCh == '#' || firstCh == '[')
{
continue;
}
RulesCount++;
var ch0 = line.CharOrZero(0);
var ch1 = line.CharOrZero(1);
var ch2 = line.CharOrZero(2);
var ch3 = line.CharOrZero(3);
if (ch0 == '|')
{
if (ch1 == '|') // ||
{
const int lineOffset = 2;
var offset = bssb.Length;
var len = line.Length - 2;
if (line.Contains('*', 2))
{
// add "*." + value
bssb.Append("*.");
line.AppendTo(bssb, lineOffset);
blackWildcardDomainList.Add(new SubRange(offset, len + 2));
// and value without "*."
blackWildcardDomainList.Add(new SubRange(offset + 2, len));
}
else
{
line.AppendTo(bssb, lineOffset);
blackDomainList.Add(new SubRange(offset, len));
}
}
else // |
{
var offset = bssb.Length;
var len = line.Length - 1 + 1;
//var wc = line.Substring(1) + "*";
line.AppendTo(bssb, 1); bssb.Append('*');
blackWildcardUrlList.Add(new SubRange(offset, len));
}
}
else if (ch0 == '@' & ch1 == '@')
{
if (ch2 == '|')
{
if (ch3 == '|') // @@||
{
const int lineOffset = 4;
var offset = bssb.Length;
var len = line.Length - 4;
if (line.Contains('*', 4))
{
// add "*." + value
bssb.Append("*.");
line.AppendTo(bssb, lineOffset);
whiteWildcardDomainList.Add(new SubRange(offset, len + 2));
// and value without "*."
whiteWildcardDomainList.Add(new SubRange(offset + 2, len));
}
else
{
line.AppendTo(bssb, lineOffset);
whiteDomainList.Add(new SubRange(offset, len));
}
}
else // @@|
{
var offset = bssb.Length;
var len = line.Length - 3 + 1;
//var wc = line.Substring(3) + "*";
line.AppendTo(bssb, 3); bssb.Append('*');
whiteWildcardUrlList.Add(new SubRange(offset, len));
}
}
else // @@
{
if (ch2.IsValidDomainCharacter() || ch2 == '*')
{
var offset = bssb.Length;
var len = line.Length - 2 + 2;
//var wc = "*" + line.Substring(2) + "*";
bssb.Append('*'); line.AppendTo(bssb, 2); bssb.Append('*');
whiteWildcardUrlList.Add(new SubRange(offset, len));
}
else if (ch2 == '/')
{
var regex = Regex.Match(line.Get(), "/(.+)/");
if (regex.Success)
{
whiteRegexUrlList.Add(new Regex(regex.Groups[1].Value, RegexOptions.ECMAScript));
}
}
}
}
else if (ch0.IsValidDomainCharacter() || ch0 == '*')
{
//var wc = "*" + line + "*";
var offset = bssb.Length;
var len = line.Length + 2;
bssb.Append('*').Append(line).Append('*');
blackWildcardUrlList.Add(new SubRange(offset, len));
}
else if (ch0 == '/')
{
var regex = Regex.Match(line.Get(), "/(.+)/");
if (regex.Success)
{
blackRegexUrlList.Add(new Regex(regex.Groups[1].Value, RegexOptions.ECMAScript));
}
else
{
goto WRONG;
}
}
else
{
goto WRONG;
}
continue;
WRONG:
RulesCount--;
Logg?.warning($"unsupported/wrong ABP filter at line {lineNum}: {line.Get().Quoted()}");
}
bigString = bssb.ToString();
blackDomainList.TrimExcess();
blackWildcardDomainList.TrimExcess();
blackRegexUrlList.TrimExcess();
blackWildcardUrlList.TrimExcess();
whiteDomainList.TrimExcess();
whiteWildcardDomainList.TrimExcess();
whiteRegexUrlList.TrimExcess();
whiteWildcardUrlList.TrimExcess();
}