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|
#!/usr/bin/perl
# Script to turn the Exim FAQ into HTML.
use integer;
# Function to do text conversions that apply to both displays and non displays
sub process_both {
my($s) = $_[0];
$s =~ s/</</g; # Deal with < and >
$s =~ s/>/>/g;
return $s;
}
# Function to do text conversions to display paragraphs
sub process_display {
my($s) = $_[0];
$s =~ s/^==>/ /;
my($indent) = $s =~ /^(\s+)/;
my($remove) = " " x (length($indent) - 3);
$s =~ s/^$remove//mg;
$s = &process_both($s);
return $s;
}
# Function to do text conversions to paragraphs not in displays.
sub process_non_display {
my($s) = &process_both($_[0]);
$s =~ s/@\\/@@backslash@@/g; # @\ temporarily hidden
$s =~ s/\\#/ /g; # \# is a hard space
$s =~ s/\\\*\*([^*]*)\*\*\\/<b>$1<\/b>/g; # \**...**\ => bold
$s =~ s/\\\*([^*]*)\*\\/<i>$1<\/i>/g; # \*.....*\ => italic
$s =~ s/\\"([^"]*)"\\/<tt>$1<\/tt>/g; # \"....."\ => fixed pitch
$s =~ s/\\\$([^\$]*)\$\\/<i>\$$1<\/i>/g; # \$.....$\ => $italic
$s =~ s/\\\\([^\\]*)\\\\/<small>$1<\/small>/g; # \\.....\\ => small
$s =~ s/\\\(([^)]*)\)\\/<i>$1<\/i>/g; # \(.....)\ => italic
$s =~ s/\\-([^\\]*)-\\/<b>-$1<\/b>/g; # \-.....-\ => -bold
$s =~ s/\\\[([^]]*)\]\\/&\#60;<i>$1<\/i>&\#62;/gx; # \[.....]\ => <italic>
$s =~ s/\\\?(.*?)\?\\/<a href="$1">$1<\/a>/g; # \?.....?\ => URL
$s =~ s/\\\^\^([^^]*)\^\^\\/<i>$1<\/i>/g; # \^^...^^\ => italic
$s =~ s/\\\^([^^]*)\^\\/<i>$1<\/i>/g; # \^.....^\ => italic
$s =~ s/\\%([^%]*)%\\/<b>$1<\/b>/g; # \%.....%\ => bold
$s =~ s/\\\/([^\/]*)\/\\/<i>$1<\/i>/g; # \/...../\ => italic
$s =~ s/\\([^\\]+)\\/<tt>$1<\/tt>/g; # \.......\ => fixed pitch
$s =~ s"//([^/\"]*)//"<i>$1</i>"g; # //.....// => italic
$s =~ s/::([^:]*)::/<i>$1:<\/i>/g; # ::.....:: => italic:
$s =~ s/``(.*?)''/“$1”/g; # ``.....'' => quoted text
$s =~ s/\s*\[\[br\]\]\s*/<br>/g; # [[br]] => <br>
$s =~ s/@@backslash@@/\\/g; # Put back single backslash
$s =~ s/^(\s*\(\d\)\s)/$1 /; # Extra space after (1), etc.
# Cross references within paragraphs
$s =~ s/Q(\d{4})(?!:)/<a href="$xref{$1}">$&<\/a>/xg;
# References to configuration samples
$s =~ s/\b([CFLS]\d\d\d)\b/<a href="$1.txt">$1<\/a>/g;
# Remove white space preceding a newline in the middle of paragraphs,
# to keep the file smaller (and for human reading when debugging).
$s =~ s/^\s+//mg;
return $s;
}
# Main program
# We want to read the file paragraph by paragraph; Perl only does this if the
# separating lines are truly blank. Having been caught by lines containing
# whitespace before, do a de-trailing pass first.
open(IN, "$ARGV[0]") || die "can't open $ARGV[0] (preliminary)\n";
open(OUT, ">$ARGV[0]-$$") || die "can't open $ARGV[0]-$$\n";
while (<IN>)
{
s/[ \t]+$//;
print OUT;
}
close(IN);
close(OUT);
rename("$ARGV[0]-$$", "$ARGV[0]") ||
die "can't rename $ARGV[0]-$$ as $ARGV[0]\n";
# The second argument is the name of a directory into which to put multiple
# HTML files. We start off with FAQ.html.
$hdir = $ARGV[1];
open(OUT, ">$hdir/FAQ.html") || die "can't open $hdir/FAQ.html\n";
# Initial output
print OUT <<End ;
<html>
<head>
<title>The Exim FAQ</title>
</head>
<body bgcolor="#F8F8F8" text="#00005A" link="#0066FF" alink="#0066FF" vlink="#000099">
<h1>The Exim FAQ</h1>
End
$/ = "";
# First pass to read the titles and questions and create the table of
# contents. We save it up in a vector so that it can be written after the
# introductory paragraphs.
open(IN, "$ARGV[0]") || die "can't open $ARGV[0] (first time)\n";
$toc = 0;
$sec = -1;
$inul = 0;
while ($_ = <IN>)
{
$count = s/\n/\n/g - 1; # Number of lines in paragraph
if ($count == 1 && /^\d+\./) # Look for headings
{
chomp;
push @toc, "</ul>" if $inul;
$inul = 0;
push @toc, "<br>\n\n" if $sec++ >= 0;
push @toc, "<a name=\"TOC$toc\" href=\"FAQ_$sec.html\">$_</a>\n";
$toc++;
($number,$title) = /^(\d+)\.\s+(.*)$/;
if ($title ne "UUCP" && $title ne "IRIX" && $title ne "BSDI" &&
$title ne "HP-UX")
{
($initial,$rest) = $title =~ /^(.)(.*)$/;
$title = "$initial\L$rest";
$title =~ s/isdn/ISDN/;
$title =~ s/\btls\b/TLS/;
$title =~ s/\bssl\b/SSL/;
$title =~ s/ os x/ OS X/;
}
push @seclist, "<a href=\"FAQ_$sec.html\">$number. $title</a>";
next;
}
if (/^(Q\d{4})/) # Q initial paragraph
{
if (!$inul)
{
push @toc, "<ul>\n";
$inul = 1;
}
$num = $1;
$rest = $';
$xref{substr($num,1)} = "FAQ_$sec.html#TOC$toc";
$rest =~ s/^: /: /;
$rest = &process_non_display($rest);
push @toc, "<li><a name=\"TOC$toc\" href=\"FAQ_$sec.html#TOC$toc\">$num</a>$rest<br><br></li>\n";
$toc++;
next;
}
}
push @toc, "</ul>\n" if $inul;
close(IN);
# This is the main processing pass. We have to detect the different kinds of
# "paragraph" and do appropriate things.
open(IN, "$ARGV[0]") || die "can't open $ARGV[0] (second time)\n";
# Skip the title line
$_ = <IN>;
# Handle the rest of the file
$toc = 0;
$maxsec = $sec;
$sec = -1;
while ($_ = <IN>)
{
$count = s/\n/\n/g - 1; # Number of lines in paragraph
chomp; # Trailing newlines
if (/^The FAQ is divided into/)
{
my($count) = scalar(@seclist);
my($cols) = ($count + 1)/2;
print OUT "<hr><a name=\"TOC\"><h1>Index</h1></a>\n";
print OUT "<p>A <i>Keyword-in-context</i> <a href=\"FAQ-KWIC_A.html\">index</a> " .
"to the questions is available. This is usually the " .
"quickest way to find information in the FAQ.</p>\n";
print OUT "<h1>Contents</h1>\n";
print OUT "<p>The FAQ is divided into the following sections:<br><br></p>\n";
print OUT "<table>\n";
for ($i = 0; $i < $cols; $i++)
{
print OUT "<tr>\n";
print OUT " <td>", " " x 4, "</td>\n";
print OUT " <td> $seclist[$i]</td>\n";
print OUT " <td>", " " x8, "$seclist[$cols+$i]</td>\n"
if $cols+$i < $count;
print OUT "</tr>\n";
}
print OUT "</table><br><p>\n<hr><br>\n";
print OUT "<h1>List of questions</h1>\n";
$_ = <IN>; # Skip section list
next;
}
if ($count == 1 && /^\d+\./) # Look for headings
{
if (@toc != 0) # TOC when hit first heading
{
while (@toc != 0) { print OUT shift @toc; }
}
# Output links at the bottom of this page
print OUT "<hr><br>\n";
print OUT "<a href=\"FAQ.html#TOC\">Contents</a> \n";
if ($sec > 0)
{
printf OUT ("<a href=\"FAQ_%d.html\">Previous</a> \n", $sec-1);
}
printf OUT ("<a href=\"FAQ_%d.html\">Next</a>\n", $sec+1);
# New section goes in new file
print OUT "</body>\n</html>\n";
close OUT;
$sec++;
open(OUT, ">$hdir/FAQ_$sec.html") ||
die "Can't open $hdir/FAQ_$sec.html\n";
print OUT "<html>\n<head>\n" .
"<title>The Exim FAQ Section $sec</title>\n" .
"</head>\n" .
"<body bgcolor=\"#F8F8F8\" text=\"#00005A\" " .
"link=\"#FF6600\" alink=\"#FF9933\" vlink=\"#990000\">\n";
printf OUT "<h1>The Exim FAQ</h1>\n";
print OUT "<a href=\"FAQ.html#TOC\">Contents</a> \n";
if ($sec > 0)
{
printf OUT ("<a href=\"FAQ_%d.html\">Previous</a> \n", $sec-1);
}
if ($sec < $maxsec)
{
printf OUT ("<a href=\"FAQ_%d.html\">Next</a>\n", $sec+1);
}
print OUT "<hr><br>\n";
print OUT "<h2><a href=\"FAQ.html#TOC$toc\">$_</a></h2>\n";
$toc++;
next;
}
s/^([QA]\d{4}|[CFLS]\d{3}): /$1: /;
if (/^(Q\d{4}:)/) # Q initial paragraph
{
print OUT "<p>\n<a name=\"TOC$toc\" href=\"FAQ.html#TOC$toc\">$1</a>";
$_ = &process_non_display($');
print OUT "$_\n</p>\n";
$toc++;
next;
}
if (/^A\d{4}:/) # A initial paragraph
{
$_ = &process_non_display($_);
s/^(A\d{4}:)/<font color="#00BB00">$1<\/font>/;
print OUT "<p>\n$_\n</p>\n";
next;
}
# If a paragraph begins ==> it is a display which must remain verbatim
# and not be reformatted. The flag gets turned into spaces.
if ($_ =~ /^==>/)
{
$_ = &process_display($_);
chomp;
print OUT "<pre>\n$_</pre>\n";
}
# Non-display paragraph; massage the final line & my sig.
elsif (/^\*\*\* End of Exim FAQ \*\*\*/)
{
}
else
{
$_ = &process_non_display($_);
if (/^Philip Hazel/)
{
s/\n/<br>\n/g;
s/<br>$/<hr><br>/;
}
print OUT "<p>\n$_\n</p>\n";
}
}
close(IN);
print OUT "<hr><br>\n";
print OUT "<a href=\"FAQ.html#TOC\">Contents</a> \n";
printf OUT ("<a href=\"FAQ_%d.html\">Previous</a>\n", $sec-1);
print OUT "</body>\n</html>\n";
close(OUT);
End
|
