Regular Expression Issue

[karlectomy]

Hi there,

I am parsing some text files using a buffered reader. I use regular expressions to match different lines to their appropriate cases. I can parse one file fine but when I run the parse on multiple files, I get

Exception in thread "main" java.util.regex.PatternSyntaxException: Unmatched closing ')' near index 3
view)

The thing is, I never get it in the same place twice. It will occur in the middle of words and never in the same word twice. I don't know if anyone might have an inkling of an idea on this one...

here are the patterns I'm using:

Pattern origin = Pattern.compile("Date of origin: .*");
Pattern review = Pattern.compile("Last review date: .*");
Pattern condition = Pattern.compile("Clinical Condition: .+");
Pattern variant = Pattern.compile("Variant \\d+: .+");
Pattern blank = Pattern.compile("\\s*");
Pattern Heading4 = Pattern.compile("Radiologic Procedure Rating .*");
Pattern Heading3 = Pattern.compile("Rating Comments.*");
Pattern Footer4 = Pattern.compile("Rating Scale: .+");
Pattern Footer3 = Pattern.compile("Appropriateness Criteria Scale.*");
Pattern References = Pattern.compile("References.*");
Pattern PageHeaderStart = Pattern.compile("An ACR Committee on Appropriateness Criteria and its expert panels have developed criteria for determining appropriate imaging examinations for diagnosis and treatment of specified medical.*");
Pattern ReferenceStart = Pattern.compile("\\d+\\Q.\\E .+");
 

Wishes,

Karl

[BigDaddyLH]

I can parse one file fine but when I run the parse on multiple files, I get

Exception in thread "main" java.util.regex.PatternSyntaxException: Unmatched closing ')' near index 3
view)

This doesn't make sense. Your code should be parsing each file separately, so if it can parse file1 or file2, it should be able to parse them in succession. The error must be somewhere in the logic where you change from one file to multiple files.

[karlectomy]

This doesn't make sense. Your code should be parsing each file separately, so if it can parse file1 or file2, it should be able to parse them in succession. The error must be somewhere in the logic where you change from one file to multiple files.

That's what I said... But there is not logic difference. I just call the same function in a for loop over an array of files from the parent directory...

All of the correct files are in the _files array which I iterate over. and I can run the parse on each file individually.

It opens several files fine but it will randomly? throw the regex.PatternSyntaxException: Unmatched closing ')' exception and it only works on the first 7 files... but I think that is an unrelated issue.

 
for(File x: _files){
    try{
        AcrParser acr = new AcrParser(x.getCanonicalPath());
        acr.parseText();
    }catch(IOException e){
        e.printStackTrace();
    }
 
}
 

And my Original call to the function:

AcrParser acr = new AcrParser("somefile.txt");
acr.parseText();
 

[BigDaddyLH]

I hope AcsParser doesn't have any static fields?

Beyond that, all I can suggest is to write a SSCCE: http://mindprod.com/jgloss/sscce.html

[karlectomy]

I hope AcsParser doesn't have any static fields?

Beyond that, all I can suggest is to write a SSCCE: http://mindprod.com/jgloss/sscce.html

THanks for your time,

I hope its not a simple "hoser at the keyboard error" as my highschool programming teacher used to say...

Yeah I built it from single file case up to multiple files... I am really frustrated because it seems the exceptions are being thrown at random and that doesn't help with debugging. My only idea is that maybe when comparing a string with a ( or ) in it, the regular expression engine farks up... I am going to try to replace parentheses with something... i don't know what yet.... BAHNAHBAHABAH

[JosAH]

@OP: you only showed us those compiled patterns. How do you use them to match
and optionally replace parts of the lines you just read from your files?

kind regards,

Jos

[karlectomy]

I found my problem... THere is a line in one of the files that I am parsing which consists of

view)

I am using the string matches function and not the regex engine to compare this line and it is getting all funky dunky on my badunky dunky...

My regular expressions were not the problem but thanks for the help.

May all your days be Exception free :)

Karl