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#! @PERL@
##
# Doc Text to HTML converted for Palm Pilots
# pdbtxt2html
#
# Copyright (C) 1998 Paul J. Lucas
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
##
########## You shouldn't have to change anything below this line. #############
use File::Basename;
use Getopt::Std;
$me = basename( $0 );
$VERSION = '1.3.1';
sub usage {
die "usage: $me [-t] file.txt [ file.html ]\n $me -v\n";
}
getopts( 'tv' ) or usage;
###############################################################################
# Input checks
###############################################################################
if ( $opt_v ) {
print "$me version $VERSION\n";
exit 0;
}
usage unless $#ARGV + 1 >= 1;
( $txt_file, $html_file ) = @ARGV;
open( INPUT, $txt_file ) or die "$me: can not open $txt_file for input\n";
if ( $html_file ) {
open( OUTPUT, ">$html_file" ) or
die "$me: can not open $html_file for output\n";
select OUTPUT;
}
###############################################################################
# Set up URL syntax
# See RFC 1630: Universal Resource Identifiers in WWW
###############################################################################
# common sub-parts
$url_user_password = '(?:[a-zA-Z][-\w.]+(?::\w+)?@)?';
$url_host = '\w[-\w.]*\w';
$url_port = '(?::\d+)?';
$url_path = '(?:[-%/\w.~]*[-%/\w~])?';
$url_query = '(?:\?[-!$%&\'()*+,./\w=?~]+)?';
$url_syntax{ ftp } = "ftp://$url_user_password$url_host$url_port$url_path";
$url_syntax{ gopher } = "gopher://$url_host$url_port$url_path";
$url_syntax{ http } = "https?://$url_host$url_port$url_path$url_query";
$url_syntax{ e_mail } = '[a-zA-Z][-\w.]+@[-\w.]+[a-zA-Z]';
$url_syntax{ mailto } = "mailto:$url_syntax{ e_mail }";
$url_syntax{ news } = 'news:[a-z][-\w.]*\w';
$url_syntax{ telnet } = "telnet://$url_user_password$url_host$url_port";
$url_syntax{ wais } = "wais://$url_host$url_port$url_path$url_query";
###############################################################################
# Do it!
###############################################################################
# get the bookmark character sequence from the end of the file
seek( INPUT, -10, 2 ) or die "$me: can not seek to end of file $txt_file\n";
while ( <INPUT> ) {
s/^\s*(.*?)\s*$/$1/;
next unless /^<([^>]+)>$/;
$bookmark = quotemeta( $1 );
last;
}
seek( INPUT, 0, 0 );
$last_level = 1;
while ( <INPUT> ) {
s/^\s*(.*?)\s*$/$1/;
last if /^<$bookmark>/;
s/</\</g;
s/>/\>/g;
$title = $_ unless $title; # set title to first line
# make embedded URLs selectable
s!$url_syntax{ ftp }!<A HREF="$&">$&</A>!g;
s!$url_syntax{ gopher }!<A HREF="$&">$&</A>!g;
s!$url_syntax{ http }!<A HREF="$&">$&</A>!g;
s!$url_syntax{ e_mail }!<A HREF="mailto:$&">$&</A>!g;
s!$url_syntax{ news }!<A HREF="$&">$&</A>!g;
s!$url_syntax{ telnet }!<A HREF="$&">$&</A>!g;
s!$url_syntax{ wais }!<A HREF="$&">$&</A>!g;
unless ( /^\s*$bookmark/o ) {
$html .= "$_<BR>";
next;
}
##### parse heading and level
$_ = $';
( $level, $heading ) = $_ =~ /^(\s*)(\S.*)$/;
$initial_spaces = length( $level ) unless defined $initial_spaces;
$level = length( $level ) - $initial_spaces + 1;
$level = 1 if $level < 1;
unless ( $opt_t ) {
$html .= "<H$level>$heading</H$level>";
next;
}
##### build a table of contents
s/[]["#%&+\/:;<=>?@\\^`{|}~]//g; # make an anchor out of heading
s/^\s*(.*?)\s*$/$1/;
tr/A-Z /a-z_/;
tr/_//s;
if ( $level > $last_level ) {
$toc .= "\n<DD><DL COMPACT>";
} elsif ( $level < $last_level ) {
$toc .= "\n</DL>" x ( $last_level - $level );
}
my $h = $level == 1 ? "<B>$heading</B>" : $heading;
$toc .= "\n<DT><A HREF=\"#$_\">$h</A>";
$html .= "<A NAME=\"$_\"></A>\n<H$level>$heading</H$level>";
$last_level = $level;
}
close( INPUT );
print "<HTML><HEAD><TITLE>$title</TITLE></HEAD><BODY><H1>$title</H1><HR>\n";
if ( $toc ) {
print "<H2>Contents</H2><DL><DT><DL>$toc\n";
print '</DL>' x ( $last_level - $level + 1 ), "</DL><P><HR><P>\n";
}
# "beautify" HTML somewhat
$html =~ s!</H(\d)><BR>!</H$1>!g;
$html =~ s!(?:<BR>\s*){2,}!\n<P>\n!g;
$html =~ s!<BR>!<BR>\n!g;
print "$html\n<HR><SMALL>End of document</SMALL></BODY></HTML>\n";
close( OUTPUT );
exit 0;
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