public void Mark()
{
CharacterReader r = new CharacterReader("one");
r.Consume();
r.Mark();
Assert.AreEqual('n', r.Consume());
Assert.AreEqual('e', r.Consume());
Assert.IsTrue(r.IsEmpty());
r.RewindToMark();
Assert.AreEqual('n', r.Consume());
}
public void Consume()
{
CharacterReader r = new CharacterReader("one");
Assert.AreEqual(0, r.Pos());
Assert.AreEqual('o', r.Current());
Assert.AreEqual('o', r.Consume());
Assert.AreEqual(1, r.Pos());
Assert.AreEqual('n', r.Current());
Assert.AreEqual(1, r.Pos());
Assert.AreEqual('n', r.Consume());
Assert.AreEqual('e', r.Consume());
Assert.IsTrue(r.IsEmpty());
Assert.AreEqual(CharacterReader.EOF, r.Consume());
Assert.IsTrue(r.IsEmpty());
Assert.AreEqual(CharacterReader.EOF, r.Consume());
}
public void NextIndexOfChar() {
string @in = "blah blah";
CharacterReader r = new CharacterReader(@in);
Assert.AreEqual(-1, r.NextIndexOf('x'));
Assert.AreEqual(3, r.NextIndexOf('h'));
string pull = r.ConsumeTo('h');
Assert.AreEqual("bla", pull);
r.Consume();
Assert.AreEqual(2, r.NextIndexOf('l'));
Assert.AreEqual(" blah", r.ConsumeToEnd());
Assert.AreEqual(-1, r.NextIndexOf('x'));
}
/// <summary>
/// Utility method to consume reader and unescape entities found within.
/// </summary>
/// <param name="inAttribute"></param>
/// <returns>unescaped string from reader</returns>
internal string UnescapeEntities(bool inAttribute)
{
StringBuilder builder = new StringBuilder();
while (!reader.IsEmpty())
{
builder.Append(reader.ConsumeTo('&'));
if (reader.Matches('&'))
{
reader.Consume();
char[] c = ConsumeCharacterReference(null, inAttribute);
if (c == null || c.Length == 0)
{
builder.Append('&');
}
else
{
builder.Append(c);
}
}
}
return(builder.ToString());
}
public void Unconsume()
{
CharacterReader r = new CharacterReader("one");
Assert.AreEqual('o', r.Consume());
Assert.AreEqual('n', r.Current());
r.Unconsume();
Assert.AreEqual('o', r.Current());
Assert.AreEqual('o', r.Consume());
Assert.AreEqual('n', r.Consume());
Assert.AreEqual('e', r.Consume());
Assert.IsTrue(r.IsEmpty());
r.Unconsume();
Assert.IsFalse(r.IsEmpty());
Assert.AreEqual('e', r.Current());
Assert.AreEqual('e', r.Consume());
Assert.IsTrue(r.IsEmpty());
Assert.AreEqual(CharacterReader.EOF, r.Consume());
r.Unconsume();
Assert.IsTrue(r.IsEmpty());
Assert.AreEqual(CharacterReader.EOF, r.Current());
}
public void MatchesAny()
{
char[] scan = { ' ', '\n', '\t' };
CharacterReader r = new CharacterReader("One\nTwo\tThree");
Assert.IsFalse(r.MatchesAny(scan));
Assert.AreEqual("One", r.ConsumeToAny(scan));
Assert.IsTrue(r.MatchesAny(scan));
Assert.AreEqual('\n', r.Consume());
Assert.IsFalse(r.MatchesAny(scan));
}
public void MatchesIgnoreCase()
{
CharacterReader r = new CharacterReader("One Two Three");
Assert.IsTrue(r.MatchesIgnoreCase("O"));
Assert.IsTrue(r.MatchesIgnoreCase("o"));
Assert.IsTrue(r.Matches('O'));
Assert.IsFalse(r.Matches('o'));
Assert.IsTrue(r.MatchesIgnoreCase("One Two Three"));
Assert.IsTrue(r.MatchesIgnoreCase("ONE two THREE"));
Assert.IsTrue(r.MatchesIgnoreCase("One"));
Assert.IsTrue(r.MatchesIgnoreCase("one"));
Assert.AreEqual('O', r.Consume());
Assert.IsFalse(r.MatchesIgnoreCase("One"));
Assert.IsTrue(r.MatchesIgnoreCase("NE Two Three"));
Assert.IsFalse(r.MatchesIgnoreCase("ne Two Three Four"));
Assert.AreEqual("ne Two Three", r.ConsumeToEnd());
Assert.IsFalse(r.MatchesIgnoreCase("ne"));
}
public void Matches()
{
CharacterReader r = new CharacterReader("One Two Three");
Assert.IsTrue(r.Matches('O'));
Assert.IsTrue(r.Matches("One Two Three"));
Assert.IsTrue(r.Matches("One"));
Assert.IsFalse(r.Matches("one"));
Assert.AreEqual('O', r.Consume());
Assert.IsFalse(r.Matches("One"));
Assert.IsTrue(r.Matches("ne Two Three"));
Assert.IsFalse(r.Matches("ne Two Three Four"));
Assert.AreEqual("ne Two Three", r.ConsumeToEnd());
Assert.IsFalse(r.Matches("ne"));
}
public void ConsumeLetterThenDigitSequence()
{
CharacterReader r = new CharacterReader("One12 Two &bar; qux");
Assert.AreEqual("One12", r.ConsumeLetterThenDigitSequence());
Assert.AreEqual(' ', r.Consume());
Assert.AreEqual("Two", r.ConsumeLetterThenDigitSequence());
Assert.AreEqual(" &bar; qux", r.ConsumeToEnd());
}
public void ConsumeToAny()
{
CharacterReader r = new CharacterReader("One &bar; qux");
Assert.AreEqual("One ", r.ConsumeToAny('&', ';'));
Assert.IsTrue(r.Matches('&'));
Assert.IsTrue(r.Matches("&bar;"));
Assert.AreEqual('&', r.Consume());
Assert.AreEqual("bar", r.ConsumeToAny('&', ';'));
Assert.AreEqual(';', r.Consume());
Assert.AreEqual(" qux", r.ConsumeToAny('&', ';'));
}
public void Advance()
{
CharacterReader r = new CharacterReader("One Two Three");
Assert.AreEqual('O', r.Consume());
r.Advance();
Assert.AreEqual('e', r.Consume());
}
public void ConsumeToString()
{
CharacterReader r = new CharacterReader("One Two Two Four");
Assert.AreEqual("One ", r.ConsumeTo("Two"));
Assert.AreEqual('T', r.Consume());
Assert.AreEqual("wo ", r.ConsumeTo("Two"));
Assert.AreEqual('T', r.Consume());
Assert.AreEqual("wo Four", r.ConsumeTo("Qux"));
}
public void ConsumeToChar()
{
CharacterReader r = new CharacterReader("One Two Three");
Assert.AreEqual("One ", r.ConsumeTo('T'));
Assert.AreEqual("", r.ConsumeTo('T')); // on Two
Assert.AreEqual('T', r.Consume());
Assert.AreEqual("wo ", r.ConsumeTo('T'));
Assert.AreEqual('T', r.Consume());
Assert.AreEqual("hree", r.ConsumeTo('T')); // consume to end
}
