eb/doc/html-toc

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2016-10-29 03:02:30 +00:00
#! /usr/bin/perl
#
# Copyright (c) 2005-2006 Motoyuki Kasahara
#
# 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.
#
#
# html-toc -- make `table of contents' of HTML files.
#
# Usage:
# html-index [option...] input-file...
#
# `html-toc' reads HTML files, and generates `table of contents' (TOC)
# of the HTML files. The TOC is created from <h1>...<h6> tags and
# <a name="..."> tag in the HTML files. Since `html-toc' doesn't parse
# HTML precisely, the tags must be the following form:
#
# <h?><a name="...">heading</a></h?>
#
# where `?' is 1..6. Note that <h?> and </h?> above must be in the same
# line.
#
# `html-toc' outputs TOC to standard out by default.
#
# Options:
# -o file specify output file.
# -h do not output file name in <a href="....">.
# -m level minimum target heading level
# (default: h1)
# -M level maximum target heading level
# (default: h6)
require 5.005;
use Getopt::Std;
#
# Usage
#
my $usage = "Usage: $0 [option...] input-file...\n";
#
# Variables
#
my $out_file = '-';
my @preamble = ();
my $fragment_only = 0;
my $min_level = 1;
my $max_level = 6;
#
# Parse command line arguments.
#
my %options;
getopts('o:hm:M:', \%options) or die $usage;
die $usage if (@ARGV == 0);
$fragment_only = 1 if (defined($options{h}) || @ARGV == 1);
$out_file = $options{o} if (defined($options{o}));
if (defined($options{m})) {
$options{m} =~ s/^h//;
$min_level = $options{m};
}
if (defined($options{M})) {
$options{M} =~ s/^h//;
$max_level = $options{M};
}
#
# Read an HTML file.
#
$current_level = $min_level;
if ($out_file eq '-') {
$out_file = 'stdout';
open(OUT_FILE, ">& STDOUT");
} else {
if (!open(OUT_FILE, "> $out_file")) {
die "$0: failed to open the file, $!: $out_file\n";
}
}
print OUT_FILE "<ul>\n";
foreach my $in_file (@ARGV) {
if (!open(IN_FILE, "< $in_file")) {
die "$0: failed to open the file, $!: $in_file\n";
}
while (<IN_FILE>) {
chomp;
next unless (m|^<h([1-6])><a name="([^\"]+)">(.*)</a>|);
my ($level, $tag, $heading) = ($1, $2, $3);
if ($level >= $min_level && $level <= $max_level) {
while ($current_level > $level) {
$current_level--;
print OUT_FILE ' ' x ($current_level - $min_level + 1);
print OUT_FILE "</ul>\n";
}
while ($current_level < $level) {
print OUT_FILE ' ' x ($current_level - $min_level + 1);
print OUT_FILE "<ul>\n";
$current_level++;
}
print OUT_FILE ' ' x ($current_level - $min_level + 1);
if ($fragment_only) {
print OUT_FILE sprintf("<li><a href=\"\#%s\">%s</a>\n",
$tag, $heading);
} else {
print OUT_FILE sprintf("<li><a href=\"%s\#%s\">%s</a>\n",
$in_file, $tag, $heading);
}
}
}
close(IN_FILE);
}
while ($current_level > $min_level) {
$current_level--;
print OUT_FILE ' ' x ($current_level - $min_level + 1);
print OUT_FILE "</ul>\n";
}
print OUT_FILE "</ul>\n";
close(OUT_FILE);