From d84dd680e0e0929406e7a70348689adbbacb3707 Mon Sep 17 00:00:00 2001
From: Stef Walter <stef@memberwebs.com>
Date: Wed, 10 May 2006 22:02:48 +0000
Subject: Add HTML generation for man pages

---
 doc/man2html.pl | 230 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 230 insertions(+)
 create mode 100755 doc/man2html.pl

(limited to 'doc/man2html.pl')

diff --git a/doc/man2html.pl b/doc/man2html.pl
new file mode 100755
index 0000000..21e3ab5
--- /dev/null
+++ b/doc/man2html.pl
@@ -0,0 +1,230 @@
+#!/usr/bin/perl
+
+# TODO: We need to make this more resilient
+# currently expects args without enforcing
+
+$FIL = $NAM = $SEC = @ARGV[0];
+
+$NAM =~ s/^([^.]+)\..+$/$1/;
+$SEC =~ s/^.+\.([^.]+)$/$1/;
+
+$command =     "groff";
+@args =        split(" ", "-Tascii -mdoc $FIL");
+
+$enable_include_links = 0;
+
+man($NAM, $SEC);
+
+sub man {
+    local($name, $section) = @_;
+    local($_, $title, $head, *MAN);
+    local($html_name, $html_section, $prefix);
+    local(@manargs);
+    local($query) = $name;
+
+    # $section =~ s/^([0-9ln]).*$/$1/;
+    $section =~ tr/A-Z/a-z/;
+
+    $prefix = "Man ";
+    if ($alttitle) {
+        $prefix = "";
+        $title = &encode_title($alttitle);
+        $head = &encode_data($alttitle);
+    } elsif ($section) {
+        $title = &encode_title("${name}($section)");
+        $head = &encode_data("${name}($section)");
+    } else {
+        $title = &encode_title("${name}");
+        $head = &encode_data("${name}");
+    }
+
+    print &html_header("$title");
+    print "<H1>Man Page: ${title}</H1>";
+    print "<PRE>\n";
+
+    $html_name = &encode_data($name);
+    $html_section = &encode_data($section);
+
+    #print Dumper($sectionpath);
+    #print "yy $section yy $manpath\n";
+    if ($name =~ /^\s*$/) {
+        print "Empty input, no man page given.\n";
+        return;
+    }
+
+    if (index($name, '*') != -1) {
+        print "Invalid character input '*': $name\n";
+        return;
+    }
+
+    if ($section !~ /^[0-9ln]\w*$/ && $section ne '') {
+        print "Sorry, section `$section' is not valid\n";
+        return;
+    }
+
+    if (!$section) {
+        if ($sectionpath->{$manpath}) {
+            $section = "-S " . $sectionpath->{$manpath}{'path'};
+        } else {
+            $section =  '';
+        }
+    } else {
+        if ($sectionpath->{$manpath}{$section}) {
+            $section = "-S " . $sectionpath->{$manpath}{$section};
+        } else {
+            $section = "-S $section";
+        }
+    }
+
+    # print "X $command{'man'} @manargs -- x $name x\n";
+    &proc(*MAN, $command, @args) ||
+        &mydie ("$0: open of $command{'man'} command failed: $!\n");
+    if (eof(MAN)) {
+        # print "X $command{'man'} @manargs -- x $name x\n";
+        print "Sorry, no data found for `$html_name" .
+                ($html_section ? "($html_section)": '') . "'.\n";
+        return;
+    }
+
+    local($space) = 1;
+    local(@sect);
+    local($i, $j);
+    while(<MAN>) {
+        # remove tailing white space
+        if (/^\s+$/) {
+            next if $space;
+            $space = 1;
+        } else {
+            $space = 0;
+        }
+
+        $_ = &encode_data($_);
+        if($enable_include_links &&
+           m,(<B>)?\#include(</B>)?\s+(<B>)?\&lt\;(.*\.h)\&gt\;(</B>)?,) {
+            $match = $4; ($regexp = $match) =~ s/\./\\\./;
+            s,$regexp,\<A HREF=\"$BASE/usr/include/$match\"\>$match\</A\>,;
+        }
+        /^\s/ &&                         # skip headers
+            s,((<[IB]>)?[\w\_\.\-]+\s*(</[IB]>)?\s*\(([1-9ln][a-zA-Z]*)\)),&mlnk($1),oige;
+
+        # detect E-Mail Addreses in manpages
+        if (/\@/) {
+            s/([a-z0-9_\-\.]+\@[a-z0-9\-\.]+\.[a-z]+)/<A HREF="mailto:$1">$1<\/A>/gi;
+        }
+
+        # detect URLs in manpages
+        if (m%tp://%) {
+            s,((ftp|http)://[^\s<>\)]+),<A HREF="$1">$1</A>,gi;
+        }
+
+        if (/^<B>\S+/ && m%^<B>([^<]+)%) {
+            $i = $1; $j = &encode_url($i);
+            s%^<B>([^<]+)</B>%<B>$i</B>%;
+            push(@sect, $1);
+        }
+        print;
+    }
+    close(MAN);
+
+    print "<H6>Copyright, N. Nielsen&nbsp;&nbsp;&nbsp;[ <a href='./'>back</a> | <a href='../../'>home</a> ]</h6>";
+    print "</BODY>\n";
+    print "</HTML>\n";
+
+    # Sleep 0.35 seconds to avoid DoS attacs
+    select undef, undef, undef, 0.35;
+}
+
+# encode unknown data for use in <TITLE>...</TITILE>
+sub encode_title {
+    # like encode_url but less strict (I couldn't find docs on this)
+    local($_) = @_;
+    s/([\000-\031\%\&\<\>\177-\377])/sprintf('%%%02x',ord($1))/eg;
+    $_;
+}
+
+# encode unknown data for use in a URL <A HREF="...">
+sub encode_url {
+    local($_) = @_;
+    # rfc1738 says that ";"|"/"|"?"|":"|"@"|"&"|"=" may be reserved.
+    # And % is the escape character so we escape it along with
+    # single-quote('), double-quote("), grave accent(`), less than(<),
+    # greater than(>), and non-US-ASCII characters (binary data),
+    # and white space.  Whew.
+    s/([\000-\032\;\/\?\:\@\&\=\%\'\"\`\<\>\177-\377 ])/sprintf('%%%02x',ord($1))/eg;
+    s/%20/+/g;
+    $_;
+}
+# encode unknown data for use inside markup attributes <MARKUP ATTR="...">
+sub encode_attribute {
+    # rfc1738 says to use entity references here
+    local($_) = @_;
+    s/([\000-\031\"\'\`\%\&\<\>\177-\377])/sprintf('\&#%03d;',ord($1))/eg;
+    $_;
+}
+# encode unknown text data for using as HTML,
+# treats ^H as overstrike ala nroff.
+sub encode_data {
+    local($_) = @_;
+    local($str);
+
+    # Escape &, < and >
+    s,\010[><&],,g;
+    s/\&/\&amp\;/g;
+    s/\</\&lt\;/g;
+    s/\>/\&gt\;/g;
+
+    s,((_\010.)+),($str = $1) =~ s/.\010//g; "<I>$str</I>";,ge;
+    s,(.\010)+,$1,g;
+
+    if (!s,((.\010.)+\s+(.\010.)+),($str = $1) =~ s/.\010//g; "<B>$str</B>";,ge) {
+        s,((.\010.)+),($str = $1) =~ s/.\010//g; "<B>$str</B>";,ge;
+    }
+
+    s,.\010,,g;
+
+    $_;
+}
+
+sub html_header {
+    return qq{<HTML>
+<HEAD>
+<TITLE>$_[0]</TITLE>
+<link rev="made" href="mailto:wosch\@FreeBSD.ORG">
+<META name="robots" content="nofollow">
+<meta content="text/html; charset=iso-8859-1" http-equiv="Content-Type">
+<link rel="stylesheet" type="text/css" href="/nielsen/style.css">
+</HEAD>
+<BODY BGCOLOR="#FFFFFF" TEXT="#000000">\n\n};
+}
+
+sub mlnk {
+    local($matched) = @_;
+    return qq{<U>$matched</U>};
+}
+
+sub proc {
+    local(*FH, $prog, @args) = @_;
+    local($pid) = open(FH, "-|");
+    return undef unless defined($pid);
+    if ($pid == 0) {
+    exec $prog, @args;
+    &mydie("exec $prog failed\n");
+    }
+    1;
+}
+
+# CGI script must die with error status 0
+sub mydie {
+	local($message) = @_;
+	print &html_header("Error");
+	print $message;
+
+print qq{
+<p>
+<A HREF="$BASE">Index Page and Help</A>
+</BODY>
+</HTML>
+};
+
+	exit(0);
+}
-- 
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