From: Peter Bailey <pbailey@...>
Date: 2007-09-19T21:03:13+09:00
Subject: Re: finding string matches, in order, in a file

William James wrote:
> On Sep 18, 1:26 pm, Peter Bailey <pbai...@bna.com> wrote:
>> > If this still won't work on your file, could the file
>> > be contaminated with some non-displaying characters
>> > that appear to be whitespace but aren't?
>> > Perhaps this would be worth a try:
>> > /<issueList>[^<>]*<issue\W+code="[A-Z]{3}">(.*?)<\/issue>/m
>>
>> Still no go, William. I tried your last phrase there, too.
> 
> You've got to track down what's going on.
> Copy and paste the code below into a file.
> (Don't even think about typing it in.)
> Run the file.  Is this the output?
> 
> "\nI'm Issue XIV,\nwho are you?\n"
> "\nI'm Issue XX, are you?\n"
> "Trade (Domestic &amp; Foreign)"
> 
> If it is, open both the Ruby file and the xml
> file with the same editor; copy the first desired
> entry from the xml file and paste it at the bottom
> of the big string in the Ruby file.  Even though
> it looks like an exact duplicate of what's already
> in the string, maybe it differs somehow.
> The output should now be:
> 
> "\nI'm Issue XIV,\nwho are you?\n"
> "\nI'm Issue XX, are you?\n"
> "Trade (Domestic &amp; Foreign)"
> "Trade (Domestic &amp; Foreign)"
> 
> If it isn't, edit the entry that you just pasted
> into the big Ruby string; delete spaces and
> line-endings and replace them with new spaces and
> line-endings.  (Perhaps the the xml file has some
> bizarre invisible characters.)
> 
> %q{
> <issueList>
>    <issue code = "BCD"  >
> I'm Issue XIV,
> who are you?
> </issue>
> 
> <issueList><issue code="XYZ">
> I'm Issue XX, are you?
> </issue>
> 
> <issueList>
> <issue code="TRD">Trade (Domestic &amp; Foreign)</issue>
> </issueList>
> 
> 
> }.scan(
>   # Using extended-mode regular expression for clarity.
>   # Whitespace and comments are ignored.
>   %r{
>     <issuelist>
>     \s*
>     <issue[ \t]+code[ \t]*=[ \t]*"[^"]*"[ \t]*>
>     (.*?)
>     </issue>
>   }xmi
> ){   p $1  }

I'm getting exactly what you predict. And, . . ., perhaps I haven't made 
this clear, but, I am getting healthy output from my script. I'm getting 
208 lines of data. Each line is an entry between the <issue> entries 
I've described. They're just totally out of order! That's my problem. 
Here are the first 5 entries I get back:
Immigration
Health Issues
Copyright/Patent/Trademark
Budget/Appropriations
Health Issues
...


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