public void NonGreedyContentStopsMatchingWhenFollowingTokensMatch()
{
// It's likely we'll only be able to get one or two tokens into
// the "following" list, since they effectively become "mandatory"
var following = new[]
{
new SimplePatternElement(Matchers.LiteralText(" (")),
new SimplePatternElement(Matchers.Identifier, "last"),
new SimplePatternElement(Matchers.LiteralText(")"))
};
var pattern = new NameValueExtractor(new[]
{
new SimplePatternElement(Matchers.Identifier, "first"),
new SimplePatternElement(Matchers.LiteralText(" ")),
new SimplePatternElement(Matchers.NonGreedyContent(following), "content"),
}.Concat(following));
var frame = "abc def ghi (jkl)";
var(properties, remainder) = pattern.ExtractValues(frame);
Assert.Null(remainder);
Assert.Equal("abc", properties["first"].ToString());
Assert.Equal("def ghi", properties["content"].ToString());
Assert.Equal("jkl", properties["last"].ToString());
}
public void SingleLineContentMatchesUntilEol()
{
var pattern = new NameValueExtractor(new[]
{
new SimplePatternElement(Matchers.Identifier, "first"),
new SimplePatternElement(Matchers.LiteralText(" ")),
new SimplePatternElement(Matchers.SingleLineContent, "content"),
new SimplePatternElement(Matchers.LiteralText(" (")),
new SimplePatternElement(Matchers.Identifier, "last"),
new SimplePatternElement(Matchers.LiteralText(")"))
});
var frame = "abc def ghi (jkl)";
var(properties, remainder) = pattern.ExtractValues(frame);
Assert.Null(remainder);
Assert.Equal("abc", properties["first"].ToString());
Assert.Equal("def ghi (jkl)", properties["content"].ToString());
}
public async Task <ReadResult> TryReadAsync()
{
var frame = await _reader.TryReadAsync();
if (!frame.HasValue)
{
return(new ReadResult(null, frame.IsAtEnd));
}
if (frame.IsOrphan)
{
throw new InvalidDataException($"A line arrived late or could not be parsed: `{frame.Value.Trim()}`.");
}
var(properties, remainder) = _nameValueExtractor.ExtractValues(frame.Value);
var evt = LogEventBuilder.FromProperties(properties, remainder);
return(new ReadResult(evt, frame.IsAtEnd));
}