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#!/usr/bin/env perl
use warnings;
use strict;
# Intended to read FAQ.txt (input file in the database format) and
# output its content as an html file, including internal and external links.
my $infile = shift || "../dat/database/FAQ.txt";
my $outfile = shift || "../../docs/FAQ.html";
open (FILE, $infile) or die "Cannot read file '$infile'.\n";
my @keys;
my %questions;
my %answers;
my $key = "";
my $current = "";
my $text = "";
my $list = 0;
my $bullet = 0;
my $listct = 0;
my $title = "no T:html key!";
while (my $line = <FILE>)
{
next if ($line =~ /^#/);
if ($line =~ /^Q:(.+)$/)
{
# Line includes the question key.
$key = $1;
$key =~ s/\s/_/;
push @keys, $key if (not exists $answers{$key});
$current = "q";
}
elsif ($key eq "" && $line =~ /^A:(.+)$/)
{
# Line includes the answer key.
# NOTE: The answers themselves also start with "A:", which is
# why we need to check whether we already have a key, above.
$key = $1;
$key =~ s/\s/_/;
push @keys, $key if (not exists $questions{$key});
$current = "a";
}
elsif ($key eq "" && $line =~ /^T:(.+)$/)
{
$key = $1;
$current = "t";
}
elsif ($line =~ /^%%%%/)
{
$_ = $text;
s/&/&/g;
s/</</g;
s/>/>/g;
s/"/"/g;
if ($current eq "a")
{
$_ = $text;
# Transform * lists into proper lists.
s|\n+\* |\n<li>|g;
# Separate paragraphs.
s/\n\n/\n<p>/g;
s|((?:<li>[^<]+)+)|<ul>\n$&</ul>\n|g;
# Hyperlink URLs.
s{http(?:|s)://[^\s\),]+}{<a href="$&">$&</a>}g;
# Highlight commands.
s|'([^\s']+)'|<strong>$1</strong>|g;
# Replace *emphasis* by italics.
s|\*(.*)\*|<em>$1</em>|g;
# Also use italics for mentioned txt/png files.
s{[^\s]+\.(?:txt|png)}{<em>$&</em>}g;
$answers{$key} = $_;
}
$questions{$key} = $_ if ($current eq "q");
$title = $_ if ($current eq "t" && $key eq "html");
$text = "";
$key = "";
$listct = 0;
}
else
{
$text .= $line;
}
}
close FILE;
open (OUTFILE, ">$outfile") or die "Cannot write to file '$outfile'.\n";
# Print the header.
print OUTFILE <<END;
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<head>
<title>$title</title>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8">
<style type="text/css">
dt {font-weight:bold; margin-bottom:1em}
dd {margin-left:0}
ul {margin-top:0.5em}
</style>
</head>
<body>
<p><a name=\"top\"></a>
<h4>$title</h4>
<ul style='list-style-type:none; padding-left:0'>
END
# Print all questions, and link them to their answer.
my $count = 0;
foreach my $k (@keys)
{
if (not exists $questions{$k})
{
print STDERR "No question for key '$k'. Skip key.\n";
next;
}
if (not exists $answers{$k})
{
print STDERR "No answer for key '$k'. Skip key.\n";
next;
}
$count++;
my $question = $questions{$k};
my $answer = $answers{$k};
# Prefix question with "Q#".
chomp $question;
$question = "Q$count".". $question";
$questions{$k} = $question;
print OUTFILE "<li><a href=\"#$k\">$question</a>\n";
}
print OUTFILE <<END;
</ul>
<hr>
<p><dl>
END
# Print all question/answer pairs.
foreach my $k (@keys)
{
next if (not (exists $questions{$k}) || not (exists $answers{$k}));
my $question = $questions{$k};
my $answer = $answers{$k};
print OUTFILE <<END;
<dt><a name=\"$k\">$question</a></dt>
<dd>$answer<hr></dd>
END
}
print OUTFILE <<END;
</dl>
<p><a href=\"#top\">Back to top</a></p>
</body>
END
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