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#! /usr/bin/perl
# $Cambridge: exim/doc/doc-docbook/Tidytxt,v 1.2 2006/02/01 11:01:01 ph10 Exp $
# Script to tidy up the output of w3m when it makes a text file. First we
# convert sequences of blank lines into a single blank line, to get everything
# uniform. Then we go through and insert blank lines before chapter and
# sections, also converting chapter titles to uppercase.
@lines = <>;
$lastwasblank = 0;
foreach $line (@lines)
{
if ($line =~ /^\s*$/)
{
$line = "" if $lastwasblank;
$lastwasblank = 1;
next;
}
$lastwasblank = 0;
}
# Find start of TOC, uppercasing its title
for ($i = 0; $i < scalar @lines; $i++)
{
$lines[$i] = "TABLE OF CONTENTS\n" if $lines[$i] =~ /^Table of Contents/;
last if $lines[$i] =~ /^1. /;
}
# Find start of first chapter
for ($i++; $i < scalar @lines; $i++)
{ last if $lines[$i] =~ /^1. /; }
# Process the body. We can detect the starts of chapters and sections by
# looking for preceding and following blank lines, and then matching against
# the numbers.
$chapter = 0;
for (; $i < scalar @lines; $i++)
{
next if $lines[$i-1] !~ /^$/ || $lines[$i+1] !~ /^$/;
# Start of chapter
if ($lines[$i] =~ /^(\d+)\. / && $1 == $chapter + 1)
{
$chapter++;
$section = 0;
$lines[$i] = "\n\n" . ("=" x 79) . "\n" . uc($lines[$i]);
}
# Start of next section
elsif ($lines[$i] =~ /^(\d+)\.(\d+) / && $1 == $chapter && $2 == $section + 1)
{
$section++;
$lines[$i] = "\n$lines[$i]" . "-" x (length($lines[$i]) - 1) . "\n";
}
}
print @lines;
# End
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