csswg-drafts/css2/bin/addnavbar at 396a3e911fac1d7220b743ac83e09f3b1ac783b6 · w3c/csswg-drafts · GitHub

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#!/usr/local/bin/perl
# Add navigation "bars" containing a link for next and previous LINKs
# plus one for any url given in argument
#
# Arnaud Le Hors - lehors@w3.org
# $Id: addnavbar,v 1.5 1997-11-20 23:46:44 ian Exp $

if ($ARGV[0] eq "-top") {
    $addtop = ();
    shift;
} else {
    $addtop = true;
}

if ($ARGV[0] eq "-bottom") {
    $addbottom = ();
    shift;
} else {
    $addbottom = true;
}

if ($ARGV[0] eq "-hr") {
    $hr = "";
    shift;
} else {
    $hr = "<hr>";
}

if ($ARGV[0] eq "-prev") {
    $addprev = ();
    shift;
} else {
    $addprev = true;
}

if ($ARGV[0] eq "-next") {
    $addnext = ();
    shift;
} else {
    $addnext = true;
}

if (($ARGV[0] eq "-r") && $ARGV[1]) {
    shift;
    $realpath = $ARGV[0];
    shift;
} else {
    $realpath = ();
}

$PROGNAME = substr($0, rindex($0, "/") + 1);

if ($#ARGV < 1) {
    print "Usage: $PROGNAME [-top] [-bottom] [-hr] [-prev] [-next] [-r realpath] src trgt [name1 url1] [name2 url2] ...
\t-top    to suppress navigation bar at the top of the page
\t-bottom to suppress navigation bar at the bottom of the page
\t-hr     to suppress horinzontal rules
\t-prev   to suppress link to previous page
\t-next   to suppress link to next page\n";
    exit 1;
} else {
    $input = $ARGV[0];
    shift;
    if (! $realpath) {
	$realpath = $input;
    }
    $output = $ARGV[0];
    shift;
    while ($ARGV[0] && $ARGV[1]) {
	$names[++$#names] = $ARGV[0];
	$urls[++$#urls] = $ARGV[1];
	shift; shift;
    }
}


### main

# copy file in memory
$buf = "";
if (!open(INPUT, $input)) {
    print STDERR "$PROGNAME Error: Cannot open file: $input\n";
    exit 1;
}
while (<INPUT>) {
    $buf .= $_;
}
close(INPUT);

# compute relative path from 1 to 2
sub rpath {
    @path1 = split("/", $_[0]);
    @path2 = split("/", $_[1]);

    pop(@path1);
    while ($path1[0] eq $path2[0]) {
	shift(@path1);
	shift(@path2);
    }

    $root = "";
    foreach $el (@path1) {
	$root .= "../";
    }
    $path = join("/", @path2);
    return "$root$path";
}

# args: tag
sub addnavbar {
    ($elem, $tag, $prev, $next) = @_;

    if ($prev && $addprev) {
	$navbar = "<a href=\"$prev\">previous</a>";
    } else {
	$navbar = "";
    }
    if ($next && $addnext) {
	if ($prev && $addprev) {
	    $navbar .= " &nbsp; ";
	}
	$navbar .= "<a href=\"$next\">next</a>";
    }
    for ($i = 0; $i <= $#names; $i++) {
	$path = rpath($realpath, $urls[$i]);
	$navbar .= " &nbsp; <a href=\"$path\">$names[$i]</a>";
    }
    if (lc($tag) eq "body") {
	if ($addtop) {
	    return
		"$elem\n<div class=\"navbar\">\n<center>&nbsp;$navbar\n</center>"
		    . $hr . "\n</div>\n";
	} else {
	    return "$elem";
	}
    } else {
	if ($addbottom) {
	    return "<div class=\"navbar\">\n" . $hr .
		"<center>$navbar\n</center></div>\n$elem";
	} else {
	    return "$elem";
	}
    }
}

$nexttag="<link[ \t\n]+rel=(next|\"next\")[ \t\n]+href=(.*?)>";
$prevtag="<link[ \t\n]+rel=(prev|\"prev\"|previous|\"previous\")[ \t\n]+href=(.*?)>";

$_ = $buf;
if (/$nexttag/sio) {
    # we don't want the quotes
    $next = $2;
    $next =~ s/\"//go;
} else {
    $next = ();
}

$_ = $buf;
if (/$prevtag/sio) {
    # we don't want the quotes
    $prev = $2;
    $prev =~ s/\"//go;
} else {
    $prev = ();
}

if ($next || $prev) {
    # insert navigation bar after <body>
    $buf =~ s/(<(body).*?>)/
	addnavbar($1, $2, $prev, $next)/sgieo;
}
if ($next || $prev) {
    # insert navigation bar before </body>
    $buf =~ s/(<(\/body)>)/
	addnavbar($1, $2, $prev, $next)/sgieo;
}

# print out result
open(OUTPUT, "> $output");
print OUTPUT $buf;
close(OUTPUT);