mgp 1.13a+upstream20090219-3 / usr / bin / mgp2html

#! /usr/bin/perl

# mgp2html.pl
# converts MagicPoint input file to simple dumb html file.
# $Id: mgp2html.pl.in,v 1.13 2009/02/18 10:44:31 nishida Exp $
#
# Copyright (C) 1997 and 1998 WIDE Project.  All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. Neither the name of the project nor the names of its contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.

@keywords = split(/\s+/, <<EOF);
noop default tab size fore back left leftfill center right shrink lcutin rcutin cont nodef xfont xfont2 vfont tfont image bimage page hgap vgap gap pause psfont prefix prefixn tabprefix tabprefixn prefixpos again ccolor bar include bgrad text linestart lineend mark system filter endfilter quality icon xsystem tsystem tfdir deffont font vfcap tfont0 embed endembed charset tmfont tmfont0 pcache anim valign area opaque sup sub setsup m17n
EOF

$alignmode = '';
$outputsomething = 0;
$page = -1;
$line = 0;
$doimage = 1;
$nodefault = 0;
$indent = 0;
$cont = 0;
$colortext = "";
$colorbg = "";
$colorlink = "";
$colorvflink = "";
$mgpdefaultfontsize = 5;
$mgpfontsize = -1;
$htmldefaultfontsize = -1;
$htmlfontsize = -1;
$htmlfontsizemin = 1;
$htmlfontsizemax = 9;
$htmlfontcol = "";
$colormode = 0;
$colorlast = "";
$infont = 0;
$filtermode = 0;
$filtercmd = "";
$filterinput = "";

while ($_ = $ARGV[0], /^-/) {
	shift;
	last if /^--$/;
	if (/^-c/)        { $colormode = 1; next; }
	if (/^-text$/)    { $colortext = shift; next; }
	if (/^-link$/)    { $colorlink = shift; next; }
	if (/^-vlink$/)   { $colorvlink = shift; next; }
	if (/^-bgcolor$/) { $colorbg = shift; next; }
	if (/^-f$/)       { $mgpdefaultfontsize = shift; next; }
	if (/^-fh$/)      { $htmldefaultfontsize = shift; next; }
	if (/^-fhmin$/)   { $htmlfontsizemin = shift; next; }
	if (/^-fhmax$/)   { $htmlfontsizemax = shift; next; }
}
$fontsize = $defaultfontsize;
$mgpfontsize = $mgpdefaultfontsize;
$| = 1;

&prologue;
while (<>) {
	s/[\n\r]*$//; # trim CR and LF
	s/</&lt;/g; # escape < as &lt;

	$_ = '' if (/^#/o);

	# multiline processing (lines ending with '\')
	while ((/\\$/) && (not eof())) {
		$_=substr($_,0,-1); # cuts last char (should be '\')
		$_=$_.<>; # concatenate next line
		s/[\n\r]*$//; # trim CR and LF
	}

	if ($_ eq '' || $_ =~ /^[^%]/) {
		$line++;
		$cont = 0 if ($cont == 2);
		$cont = 2 if ($cont == 1);
		if ($default[$line] && !$nodefault) {
			&cmds($default[$line]);
		}
		if ($filtermode) {
			if ($filterinput eq "") {
				$filterinput = $_;
			} else {
				$filterinput = $filterinput . "\n" . $_;
			}
			next; 
		}
		next if ($page == -1);
		&output($_);
		next;
	}

	$cont = 0 if ($cont == 2);
	$cont = 2 if ($cont == 1);
	&cmds($_);
}
&pageepilogue;
&epilogue;
exit 0;


sub cmds {
	local($_) = @_;

	# special directives
	if (/^%page/i) {
		&fontreset;
		if ($page != -1) {
			&alignreset;
			&pageepilogue;
		} else {
			$page = 0;
		}
		&pageprologue;
		$line = 0;
		$nodefault = 0;
		$htmlfontsize = $htmldefaultfontsize;
		$mgpfontsize = $mgpdefaultfontsize;
		$fontchange;
		next;
	} elsif (/^%default/i) {
		$x = (split(/\s+/, $_))[1];
		$default[$x] = $_;
		$default[$x] =~ s/^%default\s+\d+\s+/\%/;
		next;
	} elsif (/^%%/) {
		&output('');
		next;
	}

	# parsed directives
	@dirs = split(/,\s*/, substr($_, 1));
	foreach $j (@dirs) {
		@dir = split(/\s+/, $j);
		$dir[0] =~ tr/A-Z/a-z/;
		if ($dir[0] eq 'image') {
			if ($dir[$#dir] =~ /^\d+x\d+/) {
				$#dir--;
			}
			$dir[1] =~ s/\"//g;
			if (!$doimage) {
				# don't use images
			} elsif (scalar(@dir) == 2 || scalar(@dir) == 3) {
				&output("<IMG SRC=\"$dir[1]\" ALT=\"$dir[1]\">\n");
			} elsif (scalar(@dir) == 4) {
				# interpretation wrong
				&output("<IMG SRC=\"$dir[1]\" WIDTH=$dir[3]% HEIGHT=$dir[3]% ALT=\"$dir[1]\">\n");
			} elsif (scalar(@dir) >= 5) {
				# interpretation wrong
				&output("<IMG SRC=\"$dir[1]\" WIDTH=$dir[3]% HEIGHT=$dir[4]% ALT=\"$dir[1]\">\n");
			}
			$endline = "<BR>\n";
		} elsif ($dir[0] eq 'nodefault') {
			$nodefault++;
		} elsif ($dir[0] =~ /^(left|leftfill|right|center)$/) {
			$dir[0] =~ tr/A-Z/a-z/;
			&fontreset;
			&alignreset;
			&alignmode($dir[0]);
			&fontchange;
		} elsif ($dir[0] =~ /^filter$/) {
			&filter;
		} elsif ($dir[0] =~ /^endfilter$/) {
			&endfilter;
		} elsif ($dir[0] =~ /^cont$/) {
			$cont = 1;
		} elsif ($dir[0] =~ /^fore/) {
			$dir[1] =~ s/\"//g;
			$htmlfontcol = $dir[1];
			&fontchange if ($colormode == 1);
		} elsif ($dir[0] =~ /^size/) {
			$dir[1] =~ s/\"//g;
			$mgpfontsize = $dir[1];
			&fontchange;
		} elsif (grep($dir[0] eq $_, @keywords)) {
			# unsupported directive with 1 parameter
		} else {
			die "unsupported directive $dir[0]\n";
		}
	}
}

sub prologue {
	print "<HTML>\n";
	print "<BODY";
	print " TEXT=" . $colortext    if ($colortext ne '');
	print " BGCOLOR=" . $colorbg   if ($colorbg ne '');
	print " LINK=" . $colorlink    if ($colorlink ne '');
	print " VLINK=" . $colorvlink  if ($colorvlink ne '');
	print ">\n";
	if ($htmldefaultfontsize > 0) {
		print "<FONT SIZE=";
		print $htmldefaultfontsize;
		print ">\n";
	}
}

sub epilogue {
	if ($htmldefaultfontsize > 0){
		print "</FONT>\n";
	}
	print <<EOF;
</BODY>
</HTML>
EOF
}

sub pageprologue {
	print <<EOF
<HR>
EOF
}

sub pageepilogue {
	&output_eol;
	$page++;
	&doindent(0);
	print <<EOF
(page $page)<BR>
EOF
}

sub output {
	local($str) = @_;
	local($i) = 0;

	while ($str =~ /^\t/) {
		$i++;
		$str = substr($str, 1);
	}
	if ($cont == 0) {
		&output_eol;
		&doindent($i); 
		if (length($str)) {
			$str =~ s/http:\/\/\S*/<A HREF=$&>$&<\/A>/g;
			if ($indent) {
				print "\t" x $indent . "<LI>" . $str;
				$endline = "\n";
			} else {
				print $str;
				$endline = "<BR>\n";
			}
			$outputsomething++;
		} else {
			$endline = "<BR>\n";
		}
	} else {
		$endline = "";
		if (length($str)) {
			$str =~ s/http:\/\/\S*/<A HREF=$&>$&<\/A>/g;
			print $str;
			$outputsomething++;
		}
	}
}

sub output_eol {
	print $endline;
	$endline = "";
}

sub doindent {
	local($level) = @_;

	if ($indent > $level) {
		while ($indent > $level) {
			print "\t" x $indent . "</UL>\n";
			$indent--;
		}
	} else {
		while ($indent < $level) {
			$indent++;
			print "\t" x $indent . "<UL>\n";
		}
	}
}

sub alignreset {
	return if ($alignmode eq '');

	if ($alignmode eq 'left') {
		print "</DIV>\n";
	} elsif ($alignmode eq 'leftfill') {
		print "</DIV>\n";
	} elsif ($alignmode eq 'right') {
		print "</DIV>\n";
	} elsif ($alignmode eq 'center') {
		print "</DIV>\n";
	} else {
		die "unknown alignment $alignmode\n";
	}
	$alignmode = '';
}

sub alignmode {
	local($mode) = @_;

	$alignmode = $mode;
	if ($alignmode eq 'left') {
		print "<DIV ALIGN=LEFT>\n";
	} elsif ($alignmode eq 'leftfill') {
		print "<DIV ALIGN=LEFT>\n";
	} elsif ($alignmode eq 'right') {
		print "<DIV ALIGN=RIGHT>\n";
	} elsif ($alignmode eq 'center') {
		print "<DIV ALIGN=CENTER>\n";
	} else {
		die "unknown alignment $mode\n";
	}
	$outputsomething = 0;
}

sub filter {
	$filtercmd = "";
	for ($i = 1; $i < scalar(@dir); $i++) {
		$dir[$i] =~ s/\\/\\\\/g;
		if ($i == 1) {
			$dir[$i] =~ s/^\"//;
		} elsif ($i == scalar(@dir) - 1) {
			$dir[$i] =~ s/\"$//;
		} else {
			$dir[$i] =~ s/\"/\\"/g;
		}
		$filtercmd = $filtercmd . " " . $dir[$i];
	}
	$filtermode = 1;
}

sub endfilter {
	if ($filterinput eq '') {
	} else {
		$filterinput =~ s/\\/\\\\/g;
		$filterinput =~ s/"/\\"/g;
		$filtercmd = "echo \"" . $filterinput . "\""
				. " | " . $filtercmd;
	}
	&output_eol;
	print "<PRE>\n";
	system($filtercmd);
	print "</PRE>\n";
	$filterinput = "";
	$filtermode = 0;
}

sub fontchange {
	local($fs, $fsh);
	&fontreset;
	if ($mgpdefaultfontsize > 0) {
		$fs = $mgpfontsize - $mgpdefaultfontsize;
	} else {
		$fs = 0;
	}
	if ($htmldefaultfontsize > 0) {
		$fsh = $fs + $htmldefaultfontsize;
		$fs = $htmlfontsizemin if ($fsh < $htmlfontsizemin);
		$fs = $htmlfontsizemax if ($fsh > $htmlfontsizemax);
	}
	if (($fs != 0) || (($colormode == 1) && ($colorlast ne $htmlfontcol))){
		print "<FONT";
		if ($fs != 0) {
			print " SIZE=";
			print "+" if ($fs >= 0);
			print $fs;
		}
		if (($colormode == 1) && ($colorlast ne $htmlfontcol)) {
			print " COLOR=\"" . $htmlfontcol . "\"";
			$colorlast = $htmlfontcol;
		}
		print ">";
		$infont = 1;
	}
}

sub fontreset {
	$colorlast = "";
	if ($infont == 1) {
		print "</FONT>";
	}
	$infont = 0;
}