Ok, so I was doing this geometery take home test and neatness counts, and my handwriting isnt bad, but I decided to do the proofs on the computer and have perl spit out some nicely formatted text. The problem is I can't think of an intelligent way of dealing with the header/imfomation (Title, Given, Proof statments). Right now it just spits that out, and even the way I did that seems ugly, so suggestions would be amazing. The format of the file to be parsed is: 
Title
G: #givens
Given 1
Given 2
etc.
P:
proof statement
Pr: #start of proof
statement 1 => reason 1
etc.

[download]
here is the code 
#!/usr/bin/perl -w
use strict;
my ($file, $tr, @s, @r, $len, $lent, $pad, $i, $line);
$file="untitled:Desktop Folder:test2";
open (HAN, "<$file") or die ("Can't open $file: $!\n");

$tr=0; #I used $tr so I could skip the if statement in the while loop 
+W

#####
# Start a loop to go through the file to be parsed
#####

W: while (<HAN>) {
    chomp;
    if ($_ ne "Pr:" and $tr == 0) { #Just print out the Givens and the
+ Prove statement, "Pr:" appears before the actual proof
        print $_ . "\n";
        next W;
    } elsif ($tr == 0) { 
        print "\n\n";
        $tr=1;
        next W;
    }
    m/(.+) => (.+)/; #format is statement => reason
    push @s, $1; #constuct an array of statements
    push @r, $2; #constuct an array of reasons
}
close (HAN);
$len=0;
$lent=0;

#####
# Find the longest statement and reason for formatting
#####

foreach (@s) {
    if ( $len < length() ) {
        $len = length();
    }
}
foreach (@r) {
    if ( $lent < length() ) {
        $lent = length();
    }
}
$pad=length($#s+1); #This is so the numbers along the side are lined u
+p correctly

print "_" x ($len+$pad+4) . "|" . "_" x ($lent+2) . "\n"; #Print the t
+op ie _____|______
for ($i=0; $i<$#s+1; $i++) {
    $r[$i] =~ s/#-(\d+?)/($i+1)-$1/ge; #replace #-? with the line # yo
+u are on minus ?
    print $i+1 . "." . " " x ($pad - length($i+1)+1) . $s[$i] . " " x 
+($len - length($s[$i])) . "  |  " . $r[$i] . "\n"; #print the stateme
+nts and resons
}

[download]
and any other tips are also very welcome

Title edit by tye as one-word titles complicate simple searches

In reply to Parsing tips by smgfc

Title:
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, details, 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, summary, 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.