public void VerifySimpleTrieNotEnoughBufferLeft()
{
byte[] hello = Encoding.UTF8.GetBytes("hello");
byte[] helloBang = Encoding.UTF8.GetBytes("hello!");
SimpleTrie t = new SimpleTrie();
t.AddToken(hello);
t.AddToken(helloBang);
byte[] source1 = Encoding.UTF8.GetBytes("hi");
byte[] source2 = Encoding.UTF8.GetBytes(" hello");
int token;
int pos = 0;
Assert.IsFalse(t.GetOperation(source1, source1.Length, ref pos, out token));
Assert.AreEqual(-1, token);
pos = 1;
Assert.IsTrue(t.GetOperation(source2, source2.Length, ref pos, out token));
Assert.AreEqual(0, token);
pos = 2;
Assert.IsFalse(t.GetOperation(source2, source2.Length, ref pos, out token));
Assert.AreEqual(-1, token);
}
public void VerifySimpleTrieCombine()
{
byte[] hello = Encoding.UTF8.GetBytes("hello");
byte[] helloBang = Encoding.UTF8.GetBytes("hello!");
byte[] hi = Encoding.UTF8.GetBytes("hi");
byte[] there = Encoding.UTF8.GetBytes("there!");
SimpleTrie t = new SimpleTrie();
t.AddToken(hello);
t.AddToken(helloBang);
SimpleTrie t2 = new SimpleTrie();
t.AddToken(hi);
t.AddToken(there);
SimpleTrie combined = new SimpleTrie();
combined.Append(t);
combined.Append(t2);
byte[] source1 = Encoding.UTF8.GetBytes("hello there");
byte[] source2 = Encoding.UTF8.GetBytes("hello! there");
byte[] source3 = Encoding.UTF8.GetBytes("hi there");
byte[] source4 = Encoding.UTF8.GetBytes("there!");
int token;
int pos = 0;
Assert.IsTrue(t.GetOperation(source1, source1.Length, ref pos, out token));
Assert.AreEqual(0, token);
pos = 0;
Assert.IsTrue(t.GetOperation(source2, source2.Length, ref pos, out token));
Assert.AreEqual(1, token);
pos = 0;
Assert.IsTrue(t.GetOperation(source3, source3.Length, ref pos, out token));
Assert.AreEqual(2, token);
pos = 0;
Assert.IsTrue(t.GetOperation(source4, source4.Length, ref pos, out token));
Assert.AreEqual(3, token);
}
public void VerifySimpleTrieAtBegin()
{
byte[] hello = Encoding.UTF8.GetBytes("hello");
byte[] helloBang = Encoding.UTF8.GetBytes("hello!");
byte[] hi = Encoding.UTF8.GetBytes("hi");
SimpleTrie t = new SimpleTrie();
t.AddToken(hello);
t.AddToken(helloBang);
t.AddToken(hi);
byte[] source1 = Encoding.UTF8.GetBytes("hello there");
byte[] source2 = Encoding.UTF8.GetBytes("hello1 there");
byte[] source3 = Encoding.UTF8.GetBytes("hello! there");
byte[] source4 = Encoding.UTF8.GetBytes("hi there");
byte[] source5 = Encoding.UTF8.GetBytes("hi");
byte[] source6 = Encoding.UTF8.GetBytes("he");
int token;
int pos = 0;
Assert.IsTrue(t.GetOperation(source1, source1.Length, ref pos, out token));
Assert.AreEqual(0, token);
pos = 0;
Assert.IsTrue(t.GetOperation(source2, source2.Length, ref pos, out token));
Assert.AreEqual(0, token);
pos = 0;
Assert.IsTrue(t.GetOperation(source3, source3.Length, ref pos, out token));
Assert.AreEqual(1, token);
pos = 0;
Assert.IsTrue(t.GetOperation(source4, source4.Length, ref pos, out token));
Assert.AreEqual(2, token);
pos = 0;
Assert.IsTrue(t.GetOperation(source5, source5.Length, ref pos, out token));
Assert.AreEqual(2, token);
pos = 0;
Assert.IsFalse(t.GetOperation(source6, source6.Length, ref pos, out token));
Assert.AreEqual(-1, token);
}
public GlobbingPatternMatcher(string pattern)
{
Pattern = pattern;
List <Tuple <int, GlobbingPatternToken> > tokens = new List <Tuple <int, GlobbingPatternToken> >();
byte[] patternBytes = Encoding.UTF8.GetBytes(pattern);
int currentBufferPosition = 0;
while (currentBufferPosition != patternBytes.Length)
{
int token;
int originalBufferPosition = currentBufferPosition;
tokens.Add(!Trie.GetOperation(patternBytes, patternBytes.Length, ref currentBufferPosition, out token)
? Tuple.Create(currentBufferPosition++, GlobbingPatternToken.Literal)
: Tuple.Create(originalBufferPosition, (GlobbingPatternToken)token));
}
StringBuilder rx = new StringBuilder("^");
int literalBegin = 0;
GlobbingPatternToken lastToken = GlobbingPatternToken.AnyNumberOfPathParts;
for (int i = 0; i < tokens.Count; ++i)
{
if (lastToken == GlobbingPatternToken.Literal && tokens[i].Item2 != GlobbingPatternToken.Literal)
{
rx.Append(Regex.Escape(Encoding.UTF8.GetString(patternBytes, literalBegin, tokens[i].Item1 - literalBegin)));
}
switch (tokens[i].Item2)
{
case GlobbingPatternToken.Literal:
if (lastToken != GlobbingPatternToken.Literal)
{
literalBegin = tokens[i].Item1;
}
break;
case GlobbingPatternToken.AnyNumberOfPathParts:
rx.Append(@"(?:[^\\/]*[\\/])*");
break;
case GlobbingPatternToken.CloseCharSet:
rx.Append("]");
break;
case GlobbingPatternToken.OpenCharSet:
rx.Append("[");
break;
case GlobbingPatternToken.OnePathPart:
rx.Append(@"[^\\/]*");
break;
case GlobbingPatternToken.Wildcard:
rx.Append(@"[^\\/]?");
break;
case GlobbingPatternToken.SeparatorChar:
case GlobbingPatternToken.SeparatorChar2:
rx.Append(@"[\\/]");
break;
}
lastToken = tokens[i].Item2;
}
if (lastToken == GlobbingPatternToken.Literal)
{
rx.Append(Regex.Escape(Encoding.UTF8.GetString(patternBytes, literalBegin, patternBytes.Length - literalBegin)));
}
_regex = new Regex(rx.ToString(), RegexOptions.Compiled);
}
public static bool CppStyleEvaluator(IProcessorState processor, ref int bufferLength, ref int currentBufferPosition)
{
SimpleTrie trie = new SimpleTrie();
//Logic
trie.AddToken(processor.Encoding.GetBytes("&&"), 0);
trie.AddToken(processor.Encoding.GetBytes("||"), 1);
trie.AddToken(processor.Encoding.GetBytes("^"), 2);
trie.AddToken(processor.Encoding.GetBytes("!"), 3);
trie.AddToken(processor.Encoding.GetBytes(">"), 4);
trie.AddToken(processor.Encoding.GetBytes(">="), 5);
trie.AddToken(processor.Encoding.GetBytes("<"), 6);
trie.AddToken(processor.Encoding.GetBytes("<="), 7);
trie.AddToken(processor.Encoding.GetBytes("=="), 8);
trie.AddToken(processor.Encoding.GetBytes("="), 9);
trie.AddToken(processor.Encoding.GetBytes("!="), 10);
//Bitwise
trie.AddToken(processor.Encoding.GetBytes("&"), 11);
trie.AddToken(processor.Encoding.GetBytes("|"), 12);
trie.AddToken(processor.Encoding.GetBytes("<<"), 13);
trie.AddToken(processor.Encoding.GetBytes(">>"), 14);
//Braces
trie.AddToken(processor.Encoding.GetBytes("("), 15);
trie.AddToken(processor.Encoding.GetBytes(")"), 16);
//Whitespace
trie.AddToken(processor.Encoding.GetBytes(" "), 17);
trie.AddToken(processor.Encoding.GetBytes("\t"), 18);
//EOLs
trie.AddToken(processor.Encoding.GetBytes("\r\n"), 19);
trie.AddToken(processor.Encoding.GetBytes("\n"), 20);
trie.AddToken(processor.Encoding.GetBytes("\r"), 21);
//Tokens
trie.Append(processor.EncodingConfig.Variables);
//Run forward to EOL and collect args
TokenFamily currentTokenFamily;
List <byte> currentTokenBytes = new List <byte>();
List <TokenRef> tokens = new List <TokenRef>();
int token;
if (!trie.GetOperation(processor.CurrentBuffer, bufferLength, ref currentBufferPosition, out token))
{
currentTokenFamily = TokenFamily.Literal;
currentTokenBytes.Add(processor.CurrentBuffer[currentBufferPosition++]);
}
else if (token > ReservedTokenMaxIndex)
{
currentTokenFamily = TokenFamily.Reference | (TokenFamily)token;
tokens.Add(new TokenRef
{
Family = currentTokenFamily
});
}
else
{
currentTokenFamily = (TokenFamily)token;
if (currentTokenFamily != TokenFamily.WindowsEOL && currentTokenFamily != TokenFamily.LegacyMacEOL && currentTokenFamily != TokenFamily.UnixEOL)
{
tokens.Add(new TokenRef
{
Family = currentTokenFamily
});
}
else
{
return(EvaluateCondition(tokens, processor.EncodingConfig.VariableValues));
}
}
int braceDepth = 0;
if (tokens[0].Family == TokenFamily.OpenBrace)
{
++braceDepth;
}
bool first = true;
while ((first || braceDepth > 0) && bufferLength > 0)
{
int targetLen = Math.Min(bufferLength, trie.MaxLength);
for (; currentBufferPosition < bufferLength - targetLen + 1;)
{
int oldBufferPos = currentBufferPosition;
if (trie.GetOperation(processor.CurrentBuffer, bufferLength, ref currentBufferPosition, out token))
{
if (braceDepth == 0)
{
switch (tokens[tokens.Count - 1].Family)
{
case TokenFamily.Whitespace:
case TokenFamily.Tab:
case TokenFamily.CloseBrace:
case TokenFamily.WindowsEOL:
case TokenFamily.UnixEOL:
case TokenFamily.LegacyMacEOL:
TokenFamily thisFamily = (TokenFamily)token;
if (thisFamily == TokenFamily.WindowsEOL || thisFamily == TokenFamily.UnixEOL || thisFamily == TokenFamily.LegacyMacEOL)
{
currentBufferPosition = oldBufferPos;
}
break;
default:
currentBufferPosition = oldBufferPos;
first = false;
break;
}
if (!first)
{
break;
}
}
//We matched an item, so whatever this is, it's not a literal, end the current literal if that's
// what we currently have
if (currentTokenFamily == TokenFamily.Literal)
{
string literal = processor.Encoding.GetString(currentTokenBytes.ToArray());
tokens.Add(new TokenRef
{
Family = TokenFamily.Literal,
Literal = literal
});
currentTokenBytes.Clear();
}
//If we have a token from the args...
if (token > ReservedTokenMaxIndex)
{
currentTokenFamily = TokenFamily.Reference | (TokenFamily)token;
tokens.Add(new TokenRef
{
Family = currentTokenFamily
});
}
//If we have a normal token...
else
{
currentTokenFamily = (TokenFamily)token;
if (currentTokenFamily != TokenFamily.WindowsEOL && currentTokenFamily != TokenFamily.LegacyMacEOL && currentTokenFamily != TokenFamily.UnixEOL)
{
if (currentTokenFamily == TokenFamily.OpenBrace)
{
++braceDepth;
}
else if (currentTokenFamily == TokenFamily.CloseBrace)
{
--braceDepth;
}
tokens.Add(new TokenRef
{
Family = currentTokenFamily
});
}
else
{
return(EvaluateCondition(tokens, processor.EncodingConfig.VariableValues));
}
}
}
else if (braceDepth > 0)
{
currentTokenFamily = TokenFamily.Literal;
currentTokenBytes.Add(processor.CurrentBuffer[currentBufferPosition++]);
}
else
{
first = false;
break;
}
}
processor.AdvanceBuffer(currentBufferPosition);
currentBufferPosition = processor.CurrentBufferPosition;
bufferLength = processor.CurrentBufferLength;
}
return(EvaluateCondition(tokens, processor.EncodingConfig.VariableValues));
}
