gnu-social/sitemap.php
Evan Prodromou 74b063f20b remove default priority from sitemaps
darcs-hash:20080717153657-84dde-bbd0179305b8080911be123ffec26cee03bc1153.gz
2008-07-17 11:36:57 -04:00

391 lines
9.7 KiB
PHP

<?php
define('INSTALLDIR', dirname(__FILE__));
define('LACONICA', true);
require_once(INSTALLDIR . '/lib/common.php');
require_once(INSTALLDIR . '/lib/util.php');
$output_paths = parse_args();
standard_map();
notices_map();
user_map();
avatar_map();
index_map();
# ------------------------------------------------------------------------------
# Main functions: get data out and turn them into sitemaps
# ------------------------------------------------------------------------------
# Generate index sitemap of all other sitemaps.
function index_map() {
global $output_paths;
$output_dir = $output_paths['output_dir'];
$output_url = $output_paths['output_url'];
foreach (glob("$output_dir*.xml") as $file_name) {
# Just the file name please.
$file_name = preg_replace("|$output_dir|", '', $file_name);
$index_urls .= url(
array(
'url' => $output_url . $file_name,
'changefreq' => 'daily'
)
);
}
write_file($output_paths['index_file'], urlset($index_urls));
}
# Generate sitemap of standard site elements.
function standard_map() {
global $output_paths;
$standard_map_urls .= url(
array(
'url' => common_local_url('public'),
'changefreq' => 'daily',
'priority' => '1',
)
);
$standard_map_urls .= url(
array(
'url' => common_local_url('publicrss'),
'changefreq' => 'daily',
'priority' => '0.3',
)
);
$docs = array('about', 'faq', 'contact', 'im', 'openid', 'openmublog', 'privacy', 'source');
foreach($docs as $title) {
$standard_map_urls .= url(
array(
'url' => common_local_url('doc', array('title' => $title)),
'changefreq' => 'monthly',
'priority' => '0.2',
)
);
}
$urlset_path = $output_paths['output_dir'] . 'standard.xml';
write_file($urlset_path, urlset($standard_map_urls));
}
# Generate sitemaps of all notices.
function notices_map() {
global $output_paths;
$notices = DB_DataObject::factory('notice');
$notices->query('SELECT uri, modified FROM notice');
$notice_count = 0;
$map_count = 1;
while ($notices->fetch()) {
# Maximum 50,000 URLs per sitemap file.
if ($notice_count == 50000) {
$notice_count = 0;
$map_count++;
}
$notice = array(
'url' => $notices->uri,
'lastmod' => w3cdate($notices->modified),
'changefreq' => 'daily',
'priority' => '1',
);
$notice_list[$map_count] .= url($notice);
$notice_count++;
}
# Make full sitemaps from the lists and save them.
array_to_map($notice_list, 'notice');
}
# Generate sitemaps of all users.
function user_map() {
global $output_paths;
$users = DB_DataObject::factory('user');
$users->query('SELECT id, nickname FROM user');
$user_count = 0;
$map_count = 1;
while ($users->fetch()) {
# Maximum 50,000 URLs per sitemap file.
if ($user_count == 50000) {
$user_count = 0;
$map_count++;
}
$user_args = array('nickname' => $users->nickname);
# Define parameters for generating <url></url> elements.
$user = array(
'url' => common_local_url('showstream', $user_args),
'changefreq' => 'daily',
'priority' => '1',
);
$user_rss = array(
'url' => common_local_url('userrss', $user_args),
'changefreq' => 'daily',
'priority' => '0.3',
);
$all = array(
'url' => common_local_url('all', $user_args),
'changefreq' => 'daily',
'priority' => '1',
);
$all_rss = array(
'url' => common_local_url('allrss', $user_args),
'changefreq' => 'daily',
'priority' => '0.3',
);
$replies = array(
'url' => common_local_url('replies', $user_args),
'changefreq' => 'daily',
'priority' => '1',
);
$replies_rss = array(
'url' => common_local_url('repliesrss', $user_args),
'changefreq' => 'daily',
'priority' => '0.3',
);
$foaf = array(
'url' => common_local_url('foaf', $user_args),
'changefreq' => 'weekly',
'priority' => '0.5',
);
# Construct a <url></url> element for each user facet and add it
# to our existing list of those.
$user_list[$map_count] .= url($user);
$user_rss_list[$map_count] .= url($user_rss);
$all_list[$map_count] .= url($all);
$all_rss_list[$map_count] .= url($all_rss);
$replies_list[$map_count] .= url($replies);
$replies_rss_list[$map_count] .= url($replies_rss);
$foaf_list[$map_count] .= url($foaf);
$user_count++;
}
# Make full sitemaps from the lists and save them.
# Possible factoring: put all the lists into a master array, thus allowing
# calling with single argument (i.e., array_to_map('user')).
array_to_map($user_list, 'user');
array_to_map($user_rss_list, 'user_rss');
array_to_map($all_list, 'all');
array_to_map($all_rss_list, 'all_rss');
array_to_map($replies_list, 'replies');
array_to_map($replies_rss_list, 'replies_rss');
array_to_map($foaf_list, 'foaf');
}
# Generate sitemaps of all avatars.
function avatar_map() {
global $output_paths;
$avatars = DB_DataObject::factory('avatar');
$avatars->query('SELECT url, modified FROM avatar');
$avatar_count = 0;
$map_count = 1;
while ($avatars->fetch()) {
# We only want the original size and 24px thumbnail version - skip 96px.
if (preg_match('/-96-/', $avatars->url)) {
continue;
}
# Maximum 50,000 URLs per sitemap file.
if ($avatar_count == 50000) {
$avatar_count = 0;
$map_count++;
}
w3cdate($avatars->modified);
$image = array(
'url' => $avatars->url,
'lastmod' => w3cdate($avatars->modified),
'changefreq' => 'monthly',
'priority' => '0.2',
);
# Construct a <url></url> element for each avatar and add it
# to our existing list of those.
$avatar_list[$map_count] .= url($image);
}
array_to_map($avatar_list, 'avatars');
}
# ------------------------------------------------------------------------------
# XML generation functions
# ------------------------------------------------------------------------------
# Generate a <url></url> element.
function url($url_args) {
$url = preg_replace('/&/', '&amp;', $url_args['url']); # escape ampersands for XML
$lastmod = $url_args['lastmod'];
$changefreq = $url_args['changefreq'];
$priority = $url_args['priority'];
if (is_null($url)) {
error("url() arguments require 'url' value.");
}
$url_out = "\t<url>\n";
$url_out .= "\t\t<loc>$url</loc>\n";
if ($changefreq) {
$url_out .= "\t\t<changefreq>$changefreq</changefreq>\n";
}
if ($lastmod) {
$url_out .= "\t\t<lastmod>$lastmod</lastmod>\n";
}
if ($priority) {
$url_out .= "\t\t<priority>$priority</priority>\n";
}
$url_out .= "\t</url>\n";
return $url_out;
}
# Generate a <urlset></urlset> element.
function urlset($urlset_text) {
$urlset = '<?xml version="1.0" encoding="UTF-8"?>' . "\n" .
'<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">' . "\n" .
$urlset_text .
'</urlset>';
return $urlset;
}
# Generate a sitemap from an array containing <url></url> elements and write it to a file.
function array_to_map($url_list, $filename_prefix) {
global $output_paths;
if ($url_list) {
# $map_urls is a long string containing concatenated <url></url> elements.
while (list($map_idx, $map_urls) = each($url_list)) {
$urlset_path = $output_paths['output_dir'] . "$filename_prefix-$map_idx.xml";
write_file($urlset_path, urlset($map_urls));
}
}
}
# ------------------------------------------------------------------------------
# Internal functions
# ------------------------------------------------------------------------------
# Parse command line arguments.
function parse_args() {
$args = getopt('f:d:u:');
if (is_null($args[f]) && is_null($args[d]) && is_null($args[u])) {
error('Mandatory arguments: -f <index file path> -d <output directory path> -u <URL of sitemaps directory>');
}
if (is_null($args[f])) {
error('You must specify an index file name with the -f option.');
}
if (is_null($args[d])) {
error('You must specify a directory for the output file with the -d option.');
}
if (is_null($args[u])) {
error('You must specify a URL for the directory where the sitemaps will be kept with the -u option.');
}
$index_file = $args[f];
$output_dir = $args[d];
$output_url = $args[u];
if (file_exists($output_dir)) {
if (is_writable($output_dir) === FALSE) {
error("$output_dir is not writable.");
}
} else {
error("output directory $output_dir does not exist.");
}
$paths = array(
'index_file' => $index_file,
'output_dir' => trailing_slash($output_dir),
'output_url' => trailing_slash($output_url),
);
return $paths;
}
# Format database timestamps as W3C DTF.
function w3cdate ($timestamp) {
preg_match('/(\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)/', $timestamp, $date);
return date(DATE_W3C, mktime($date[4], $date[5], $date[6], $date[2], $date[3], $date[1]));
}
# Ensure paths end with a "/".
function trailing_slash($path) {
if (preg_match('/\/$/', $path) == 0) {
$path .= '/';
}
return $path;
}
# Write data to disk.
function write_file($path, $data) {
if (is_null($path)) {
error('No path specified for writing to.');
} elseif (is_null($data)) {
error('No data specified for writing.');
}
if (($fh_out = fopen($path,'w')) === FALSE) {
error("couldn't open $path for writing.");
}
if (fwrite($fh_out, $data) === FALSE) {
error("couldn't write to $path.");
}
}
# Display an error message and exit.
function error ($error_msg) {
if (is_null($error_msg)) {
$error_msg = 'error() was called without any explanation!';
}
echo "Error: $error_msg\n";
exit(1);
}
?>