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|
#! /usr/bin/perl
# $Cambridge: exim/doc/doc-docbook/TidyHTML-spec,v 1.3 2006/02/01 11:01:01 ph10 Exp $
# Script to tidy up the spec HTML files that are generated by xmlto. The
# following changes are made:
#
# 1. Tidy the index.html file by splitting the very long lines.
# 2. Create reverse links from chapter and section titles back to the TOC.
# 3. Tidy the ix01.html file - the actual index - by splitting long lines.
# 4. Insert links from the letter divisions to the top of the Index.
# 5. Turn <div class="literallayout"><p> into <div class="literallayout"> and
# a matching </p></div> into </div> to get rid of unwanted vertical white
# space.
# 6. Before each occurrence of </td> insert so that the table's cell
# is a little bit wider than the text itself.
chdir "spec.html";
$tocref = 1;
# Read in the index.html file. It's really the TOC.
open(IN, "index.html") || die "Failed to open index.html for reading: $!\n";
@toc = <IN>;
close(IN);
# Insert a newline after every > because the whole toc is generated as one
# humungous line that is hard to check. Then split the lines so that each one
# is a separate element in the vector.
foreach $line (@toc) { $line =~ s/>\s*/>\n/g; }
for ($i = 0; $i < scalar(@toc); $i++)
{ splice @toc, $i, 1, (split /(?<=\n)/, $toc[$i]); }
# We want to create reverse links from each chapter and section title back to
# the relevant place in the TOC. Scan the TOC for the relevant entries. Add
# an id to each entry, and create tables that remember the file names and the
# new link ids.
foreach $line (@toc)
{
if ($line =~ /^<a href="((?:ch|ix)\d+\.html)(#[^"]+)?">/)
{
my($chix) = $1;
my($ss) = $2;
my($id) = sprintf "%04d", $tocref++;
$line =~ s/<a/<a id="toc$id"/;
$backref{"$chix$ss"} = "toc$id";
push @chlist, $chix;
}
}
# Write out the modified index.html file.
open (OUT, ">index.html") || die "Failed to open index.html for writing: $!\n";
print OUT @toc;
close(OUT);
# Now scan each of the other page files and insert the reverse links. While
# we are at it, we tidy up <div class="literallayout"> by removing unwanted
# paragraph marks, which generate unwanted vertical space. We also insert
# before </td> to push table cells apart from each other.
foreach $file (@chlist)
{
open(IN, "$file") || die "Failed to open $file for reading: $!\n";
@text = <IN>;
close(IN);
# Insert a newline after certain elements, and split the lines so that each
# one is a separate element in the vector. This makes it easier to recognize
# these elements.
foreach $line (@text)
{
$line =~ s/<p>\s*(?!\n)/<p>\n/g;
$line =~ s/<\/p>\s*(?!\n)/<\/p>\n/g;
$line =~ s/<\/div>\s*(?!\n)/<\/div>\n/g;
$line =~ s/<div([^>]*)>(?!\n)/<div$1>\n/g;
}
for ($i = 0; $i < scalar(@text); $i++)
{ splice @text, $i, 1, (split /(?<=\n)/, $text[$i]); }
$thisdiv = 0;
for ($i = 0; $i < scalar(@text); $i++)
{
if ($text[$i] =~ /^(.*?)<a( xmlns="[^"]+")? id="([^"]+)"><\/a>(.+?)<\/h(.*)$/)
{
my($pre, $opt, $id, $title, $post) = ($1, $2, $3, $4, $5);
# Section reference
my($ref) = $backref{"$file#$id"};
# If not found, try for a chapter reference
$ref = $backref{"$file"} if !defined $ref;
# Adjust the line
$text[$i]= "$pre<a$opt href=\"index.html#$ref\" id=\"$id\">$title</a></h$post";
}
elsif ($text[$i] =~ /^<div [^>]*?class="literallayout">$/ && $text[$i+1] eq "<p>\n")
{
$text[++$i] = "";
$thisdiv = 1;
}
elsif ($thisdiv && $text[$i] eq "</p>\n" && $text[$i+1] eq "</div>\n")
{
$text[$i] = "";
$thisdiv = 0;
}
elsif ($text[$i] =~ /^\s*<\/td>/)
{
$text[$i] = " $text[$i]";
}
}
open(OUT, ">$file") || die "Failed to open $file for writing: $!\n";
print OUT @text;
close(OUT);
}
# Now process the ix01.html file
open(IN, "ix01.html") || die "Failed to open ix01.html for reading: $!\n";
@index = <IN>;
close(IN);
# Insert a newline after every > because the whole index is generated as one
# humungous line that is hard to check. Then split the lines so that each one
# is a separate element in the vector.
foreach $line (@index) { $line =~ s/>\s*/>\n/g; }
for ($i = 0; $i < scalar(@index); $i++)
{ splice @index, $i, 1, (split /(?<=\n)/, $index[$i]); }
# We want to add a list of letters at the top of the index, and link back
# to them from each letter heading. First find the index title and remember
# where to insert the list of letters.
for ($i = 0; $i < scalar(@index); $i++)
{
if ($index[$i] =~ /^<\/h2>$/)
{
$listindex = $i;
last;
}
}
# Now scan through for the letter headings and build the cross references,
# while also building up the list to insert.
$list = "<h4>\n";
for (; $i < scalar(@index); $i++)
{
if ($index[$i] =~ /^(.)<\/h3>$/)
{
$letter = $1;
$index[$i-1] =~ s/^/<a id="${letter}B" href="#${letter}T">/;
$index[$i] =~ s/$/<\/a>/;
$list .= "<a id=\"${letter}T\" href=\"#${letter}B\"> $letter</a>\n";
}
}
# Now we know which letters we have, we can insert the list.
$list .= "</h4>\n";
splice @index, $listindex, 0, $list;
# Write out the modified index.html file.
open (OUT, ">ix01.html") || die "Failed to open ix01.html for writing: $!\n";
print OUT @index;
close(OUT);
# End
|
