Beefy Boxes and Bandwidth Generously Provided by pair Networks
Think about Loose Coupling

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

I'm trying to parse a text file and convert it to XML. The .txt file consists of a list of entries, separated by line breaks. So, two sample entries look like this:

Leyson, Captain Burr. "With or Without Gadgets." Boys' Life. Nov 19 +49. p. 6. "An old-timer knew what he had to do in a jam. He didn't + need hundreds of those gadgets to guide him to safety." @gauge %tri +vial "The Battle Against Baldness." Kiplinger's Personal Finance. Feb 194 +9. "A little home hair-cutter gadget--a comb with a razor attached-- + has zipped its way into fame in recent months. Barbers pooh-pooh it + as a threat, but sales are going strong." @tool %american

Each entry contains bibliographic data, a quotation from that source, and two sets of tags: a set of primary and secondary classifications, one using @tags and the other using %tags, all on a single line.

The most important information for me to extract from each entry is year and tags. So, I came up with the following script:

#!/usr/bin/perl -w my $year = ""; while (<>) { chomp; if ($_ eq "") {next;} elsif ($_ =~ /^\d\d\d\d$/) { $_ = $year; } else { s/\@(\w*)/ <keyword> $1 <\/keyword>/g; s/\%(\w*)/ <tag> $1 <\/tag>/g; print "<entry>$_ <year> $year </year> </entry>\n"; } }

The @tags and %tags are recognized just fine. Problem is, entries and years are not located. My program doesn't differentiate between entries: I get <entry> at the very beginning of the output and </entry> at the very end. Similarly, there's only a single, blank <year></year> right before </entry>.

I realize there's probably a very simple solution to this, but I'm still at the circumference of a circle, knock-knock-joke stage of perl programming, so your expertise would be very much appreciated. Thanks!

In reply to Converting a Text file to XML by strobodyne

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others having an uproarious good time at the Monastery: (4)
    As of 2017-11-21 05:33 GMT
    Find Nodes?
      Voting Booth?
      In order to be able to say "I know Perl", you must have:

      Results (295 votes). Check out past polls.