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Add collections and authors RSS/Atom/OPDS feeds

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This commit is contained in:
Alex Cabal 2022-07-11 16:54:53 -05:00
parent e19847adac
commit 05e0f77b45
19 changed files with 280 additions and 142 deletions
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6
.gitignore vendored
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@ -2,11 +2,11 @@ ebooks/*
www/ebooks/*
www/images/covers/*
www/feeds/opds/*.xml
www/feeds/opds/subjects/*.xml
www/feeds/opds/*/*.xml
www/feeds/rss/*.xml
www/feeds/rss/subjects/*.xml
www/feeds/rss/*/*.xml
www/feeds/atom/*.xml
www/feeds/atom/subjects/*.xml
www/feeds/atom/*/*.xml
vendor/
composer.lock
.vagrant/

2
config/apache/standardebooks.org.conf
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@ -279,6 +279,8 @@ Define webroot /standardebooks.org/web
RewriteCond %{QUERY_STRING} \bquery=
RewriteRule ^/feeds/(opds|atom|rss)/all.xml$ /feeds/$1/search.php [QSA]
RewriteRule ^/feeds/(atom|rss)/([^/\.]+)$ /feeds/collection.php?type=$1&name=$2
# Rewrite rules for bulk downloads
RewriteRule ^/bulk-downloads/(.+\.zip)$ /bulk-downloads/download.php?path=$1
RewriteRule ^/bulk-downloads/([^/\.]+)$ /bulk-downloads/collection.php?name=$1

2
config/apache/standardebooks.test.conf
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@ -261,6 +261,8 @@ Define webroot /standardebooks.org/web
RewriteCond %{QUERY_STRING} \bquery=
RewriteRule ^/feeds/(opds|atom|rss)/all.xml$ /feeds/$1/search.php [QSA]
RewriteRule ^/feeds/(atom|rss)/([^/\.]+)$ /feeds/collection.php?type=$1&name=$2
# Rewrite rules for bulk downloads
RewriteRule ^/bulk-downloads/(.+\.zip)$ /bulk-downloads/download.php?path=$1
RewriteRule ^/bulk-downloads/([^/\.]+)$ /bulk-downloads/collection.php?name=$1

7
lib/AtomFeed.php
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@ -23,7 +23,7 @@ class AtomFeed extends Feed{
parent::__construct($title, $url, $path, $entries);
$this->Subtitle = $subtitle;
$this->Id = $url;
$this->Stylesheet = '/feeds/atom/style';
$this->Stylesheet = SITE_URL . '/feeds/atom/style';
}
@ -41,13 +41,16 @@ class AtomFeed extends Feed{
return $this->XmlString;
}
public function SaveIfChanged(): void{
public function SaveIfChanged(): bool{
// Did we actually update the feed? If so, write to file and update the index
if($this->HasChanged($this->Path)){
// Files don't match, save the file
$this->Updated = new DateTime();
$this->Save();
return true;
}
return false;
}
protected function HasChanged(string $path): bool{

5
lib/Library.php
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@ -322,7 +322,10 @@ class Library{
* @return array<string, array<int|string, array<int|string, mixed>>>
*/
public static function RebuildBulkDownloadsCache(): array{
$collator = collator_create( 'en_US' ); // Used for sorting letters with diacritics like in author names
$collator = Collator::create('en_US'); // Used for sorting letters with diacritics like in author names
if($collator === null){
throw new Exceptions\SeException('Couldn\'t create collator object when rebuilding bulk download cache.');
}
$months = [];
$subjects = [];
$collections = [];

7
lib/OpdsFeed.php
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@ -16,7 +16,7 @@ class OpdsFeed extends AtomFeed{
public function __construct(string $title, string $subtitle, string $url, string $path, array $entries, ?OpdsNavigationFeed $parent){
parent::__construct($title, $subtitle, $url, $path, $entries);
$this->Parent = $parent;
$this->Stylesheet = '/feeds/opds/style';
$this->Stylesheet = SITE_URL . '/feeds/opds/style';
}
@ -45,7 +45,7 @@ class OpdsFeed extends AtomFeed{
}
}
public function SaveIfChanged(): void{
public function SaveIfChanged(): bool{
// Did we actually update the feed? If so, write to file and update the index
if($this->HasChanged($this->Path)){
// Files don't match, save the file and update the parent navigation feed with the last updated timestamp
@ -58,6 +58,9 @@ class OpdsFeed extends AtomFeed{
// Save our own file
$this->Save();
return true;
}
return false;
}
}

7
lib/RssFeed.php
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@ -17,7 +17,7 @@ class RssFeed extends Feed{
public function __construct(string $title, string $description, string $url, string $path, array $entries){
parent::__construct($title, $url, $path, $entries);
$this->Description = $description;
$this->Stylesheet = '/feeds/rss/style';
$this->Stylesheet = SITE_URL . '/feeds/rss/style';
}
@ -35,12 +35,15 @@ class RssFeed extends Feed{
return $this->XmlString;
}
public function SaveIfChanged(): void{
public function SaveIfChanged(): bool{
// Did we actually update the feed? If so, write to file and update the index
if($this->HasChanged($this->Path)){
// Files don't match, save the file
$this->Save();
return true;
}
return false;
}
protected function HasChanged(string $path): bool{

209
scripts/generate-feeds
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@ -2,24 +2,58 @@
<?
require_once('/standardebooks.org/web/lib/Core.php');
use function Safe\krsort;
use Safe\DateTime;
use function Safe\getopt;
use function Safe\mkdir;
use function Safe\preg_replace;
use function Safe\sort;
function SaveFeed($feed, $force, $now = null){
function SortByUpdatedDesc($a, $b){
return $b->Updated <=> $a->Updated;
}
function SaveFeed(Feed $feed, bool $force, ?string $label = null, ?string $labelSort = null, DateTime $now = null): void{
$updateAttrs = false;
if($force){
if($now !== null){
$feed->Updated = $now;
}
$feed->Save();
$updateAttrs = true;
}
else{
$feed->SaveIfChanged();
$updateAttrs = $feed->SaveIfChanged();
}
if($updateAttrs && $label !== null && $labelSort !== null){
exec('attr -q -s se-label -V ' . escapeshellarg($label) . ' ' . escapeshellarg($feed->Path));
exec('attr -q -s se-label-sort -V ' . escapeshellarg($labelSort) . ' ' . escapeshellarg($feed->Path));
}
}
function CreateOpdsCollectionFeed(string $name, string $url, string $description, array $collections, array $ebooks, DateTime $now, string $webRoot, OpdsNavigationFeed $opdsRoot, bool $force): void{
$collator = collator_create('en_US'); // Used for sorting letters with diacritics like in author names
usort($collections, function($a, $b) use($collator){ return $collator->compare($a['sortedname'], $b['sortedname']); });
// Create the collections navigation document
$collectionNavigationEntries = [];
foreach($collections as $collection){
$collectionNavigationEntries[] = new OpdsNavigationEntry($collection['name'], str_replace('%s', $collection['name'], $description), $url . '/' . $collection['id'], $now, 'subsection', 'navigation');
}
$collectionsFeed = new OpdsNavigationFeed('Standard Ebooks by ' . ucfirst($name), 'Browse Standard Ebooks by ' . $name . '.', $url, $webRoot . $url . '/index.xml', $collectionNavigationEntries, $opdsRoot);
$collectionsFeed->Subtitle = 'Browse Standard Ebooks by collection.';
SaveFeed($collectionsFeed, $force, null, null, $now);
// Now generate each individual collection feed
foreach($collectionNavigationEntries as $collectionNavigationEntry){
$id = basename($collectionNavigationEntry->Id);
usort($ebooks[$id], 'SortByUpdatedDesc');
$collectionFeed = new OpdsAcquisitionFeed($collectionNavigationEntry->Title . ' Ebooks', $collectionNavigationEntry->Description, $url . '/' . $id, $webRoot . $url . '/' . $id . '.xml', $ebooks[$id], $collectionsFeed);
SaveFeed($collectionFeed, $force, null, null, $now);
}
}
$longopts = ['webroot:', 'force'];
$options = getopt('', $longopts);
$webRoot = $options['webroot'] ?? WEB_ROOT;
@ -29,37 +63,47 @@ $allEbooks = [];
$newestEbooks = [];
$subjects = [];
$ebooksBySubject = [];
$collections = [];
$ebooksByCollection = [];
$authors = [];
$ebooksByAuthor = [];
$ebooksPerNewestEbooksFeed = 15;
if(!is_dir($webRoot . '/feeds/opds/subjects')){
mkdir($webRoot . '/feeds/opds/subjects');
}
$dirs = [ '/feeds/opds/subjects', '/feeds/rss/subjects', '/feeds/atom/subjects',
'/feeds/opds/collections', '/feeds/rss/collections', '/feeds/atom/collections',
'/feeds/opds/authors', '/feeds/rss/authors', '/feeds/atom/authors'
];
if(!is_dir($webRoot . '/feeds/rss/subjects')){
mkdir($webRoot . '/feeds/rss/subjects');
}
if(!is_dir($webRoot . '/feeds/atom/subjects')){
mkdir($webRoot . '/feeds/atom/subjects');
foreach($dirs as $dir){
if(!is_dir($webRoot . $dir)){
mkdir($webRoot . $dir);
}
}
// Iterate over all ebooks to build the various feeds
foreach(Library::GetEbooksFromFilesystem($webRoot) as $ebook){
$allEbooks[$ebook->Updated->format('Y-m-d\TH:i:s\Z') . ' ' . $ebook->Identifier] = $ebook;
$newestEbooks[$ebook->Created->format('Y-m-d\TH:i:s\Z') . ' ' . $ebook->Identifier] = $ebook;
$allEbooks[] = $ebook;
$newestEbooks[] = $ebook;
foreach($ebook->Tags as $tag){
// Add the book's subjects to the main subjects list
if(!in_array($tag->Name, $subjects)){
$subjects[] = $tag->Name;
$urlName = Formatter::MakeUrlSafe($tag->Name);
$ebooksBySubject[$urlName][] = $ebook;
$subjects[$urlName] = ['id' => $urlName, 'name' => $tag->Name, 'sortedname' => $tag->Name];
}
// Sort this ebook by subject
$ebooksBySubject[$tag->Name][$ebook->Created->format('Y-m-d\TH:i:s\Z') . ' ' . $ebook->Identifier] = $ebook;
foreach($ebook->Collections as $collection){
$urlName = Formatter::MakeUrlSafe($collection->Name);
$ebooksByCollection[$urlName][] = $ebook;
$collections[$urlName] = ['id' => $urlName, 'name' => $collection->Name, 'sortedname' => $collection->GetSortedName()];
}
$authorsUrl = preg_replace('|^/ebooks/|', '', $ebook->AuthorsUrl);
$ebooksByAuthor[$authorsUrl][] = $ebook;
$authors[$authorsUrl] = ['id' => $authorsUrl, 'name' => strip_tags($ebook->AuthorsHtml), 'sortedname' => $ebook->Authors[0]->SortName];
}
krsort($newestEbooks);
usort($allEbooks, 'SortByUpdatedDesc');
usort($newestEbooks, function($a, $b){ return $b->Created <=> $a->Created; });
$newestEbooks = array_slice($newestEbooks, 0, $ebooksPerNewestEbooksFeed);
$now = new DateTime();
@ -81,6 +125,20 @@ $opdsRootEntries = [
$now,
'subsection',
'navigation'),
new OpdsNavigationEntry(
'Standard Ebooks by Collection',
'Browse Standard Ebooks by collection.',
'/feeds/opds/collections',
$now,
'subsection',
'navigation'),
new OpdsNavigationEntry(
'Standard Ebooks by Author',
'Browse Standard Ebooks by author.',
'/feeds/opds/authors',
$now,
'subsection',
'navigation'),
new OpdsNavigationEntry(
'All Standard Ebooks',
'All Standard Ebooks, most-recently-updated first. This is a Complete Acquisition Feed as defined in OPDS 1.2 §2.5.',
@ -91,64 +149,85 @@ $opdsRootEntries = [
];
$opdsRoot = new OpdsNavigationFeed('Standard Ebooks', 'The Standard Ebooks catalog.', '/feeds/opds', $webRoot . '/feeds/opds/index.xml', $opdsRootEntries, null);
SaveFeed($opdsRoot, $force, $now);
SaveFeed($opdsRoot, $force, null, null, $now);
// Create the subjects navigation document
sort($subjects);
$subjectNavigationEntries = [];
foreach($subjects as $subject){
$subjectNavigationEntries[] = new OpdsNavigationEntry($subject, 'Standard Ebooks tagged with “' . strtolower($subject) . ',” most-recently-released first.', '/feeds/opds/subjects/' . Formatter::MakeUrlSafe($subject), $now, 'subsection', 'navigation');
}
$subjectsFeed = new OpdsNavigationFeed('Standard Ebooks by Subject', 'Browse Standard Ebooks by subject.', '/feeds/opds/subjects', $webRoot . '/feeds/opds/subjects/index.xml', $subjectNavigationEntries, $opdsRoot);
$subjectsFeed->Subtitle = 'Browse Standard Ebooks by subject.';
SaveFeed($subjectsFeed, $force, $now);
// Create the Subjects feeds
CreateOpdsCollectionFeed('subject', '/feeds/opds/subjects', 'Standard Ebooks in the “%s” subject, most-recently-released first.', $subjects, $ebooksBySubject, $now, $webRoot, $opdsRoot, $force);
// Now generate each individual subject feed
foreach($subjectNavigationEntries as $subjectNavigationEntry){
krsort($ebooksBySubject[$subjectNavigationEntry->Title]);
$subjectFeed = new OpdsAcquisitionFeed($subjectNavigationEntry->Title . ' Ebooks', $subjectNavigationEntry->Description, '/feeds/opds/subjects/' . Formatter::MakeUrlSafe($subjectNavigationEntry->Title), $webRoot . '/feeds/opds/subjects/' . Formatter::MakeUrlSafe($subjectNavigationEntry->Title) . '.xml', $ebooksBySubject[$subjectNavigationEntry->Title], $subjectsFeed);
SaveFeed($subjectFeed, $force, $now);
}
// Create the Collections feeds
CreateOpdsCollectionFeed('collection', '/feeds/opds/collections', 'Standard Ebooks in the “%s” collection, most-recently-released first.', $collections, $ebooksByCollection, $now, $webRoot, $opdsRoot, $force);
// Create the 'all' feed
krsort($allEbooks);
// Create the Author feeds
CreateOpdsCollectionFeed('author', '/feeds/opds/authors', 'Standard Ebooks by %s, most-recently-released first.', $authors, $ebooksByAuthor, $now, $webRoot, $opdsRoot, $force);
// Create the All feed
$allFeed = new OpdsAcquisitionFeed('All Standard Ebooks', 'All Standard Ebooks, most-recently-updated first. This is a Complete Acquisition Feed as defined in OPDS 1.2 §2.5.', '/feeds/opds/all', $webRoot . '/feeds/opds/all.xml', $allEbooks, $opdsRoot, true);
SaveFeed($allFeed, $force, $now);
SaveFeed($allFeed, $force, null, null, $now);
// Create the 'newest' feed
// Create the Newest feed
$newestFeed = new OpdsAcquisitionFeed('Newest Standard Ebooks', 'The ' . number_format($ebooksPerNewestEbooksFeed) . ' latest Standard Ebooks, most-recently-released first.', '/feeds/opds/new-releases', $webRoot . '/feeds/opds/new-releases.xml', $newestEbooks, $opdsRoot);
SaveFeed($newestFeed, $force, $now);
SaveFeed($newestFeed, $force, null, null, $now);
// Now create RSS feeds
// Create the 'newest' feed
$newestRssFeed = new RssFeed('Standard Ebooks - Newest Ebooks', 'The ' . number_format($ebooksPerNewestEbooksFeed) . ' latest Standard Ebooks, most-recently-released first.', '/feeds/rss/new-releases', $webRoot . '/feeds/rss/new-releases.xml', $newestEbooks);
SaveFeed($newestRssFeed, $force);
// Create the 'all' feed
// Create RSS/Atom feeds
// Create the RSS All feed
$allRssFeed = new RssFeed('Standard Ebooks - All Ebooks', 'All Standard Ebooks, most-recently-released first.', '/feeds/rss/all', $webRoot . '/feeds/rss/all.xml', $allEbooks);
SaveFeed($allRssFeed, $force);
SaveFeed($allRssFeed, $force, null, null);
// Generate each individual subject feed
foreach($ebooksBySubject as $subject => $ebooks){
krsort($ebooks);
$subjectRssFeed = new RssFeed('Standard Ebooks - ' . (string)$subject . ' Ebooks', 'Standard Ebooks tagged with “' . strtolower($subject) . ',” most-recently-released first.', '/feeds/rss/subjects/' . Formatter::MakeUrlSafe((string)$subject), $webRoot . '/feeds/rss/subjects/' . Formatter::MakeUrlSafe((string)$subject) . '.xml', $ebooks);
SaveFeed($subjectRssFeed, $force);
}
// Create the RSS Newest feed
$newestRssFeed = new RssFeed('Standard Ebooks - Newest Ebooks', 'The ' . number_format($ebooksPerNewestEbooksFeed) . ' latest Standard Ebooks, most-recently-released first.', '/feeds/rss/new-releases', $webRoot . '/feeds/rss/new-releases.xml', $newestEbooks);
SaveFeed($newestRssFeed, $force, null, null);
// Now create the Atom feeds
// Create the 'newest' feed
$newestAtomFeed = new AtomFeed('Standard Ebooks - Newest Ebooks', 'The ' . number_format($ebooksPerNewestEbooksFeed) . ' latest Standard Ebooks, most-recently-released first.', '/feeds/atom/new-releases', $webRoot . '/feeds/atom/new-releases.xml', $newestEbooks);
SaveFeed($newestAtomFeed, $force, $now);
// Create the 'all' feed
// Create the Atom All feed
$allAtomFeed = new AtomFeed('Standard Ebooks - All Ebooks', 'All Standard Ebooks, most-recently-released first.', '/feeds/atom/all', $webRoot . '/feeds/atom/all.xml', $allEbooks);
SaveFeed($allAtomFeed, $force, $now);
SaveFeed($allAtomFeed, $force, null, null, $now);
// Create the Atom Newest feed
$newestAtomFeed = new AtomFeed('Standard Ebooks - Newest Ebooks', 'The ' . number_format($ebooksPerNewestEbooksFeed) . ' latest Standard Ebooks, most-recently-released first.', '/feeds/atom/new-releases', $webRoot . '/feeds/atom/new-releases.xml', $newestEbooks);
SaveFeed($newestAtomFeed, $force, null, null, $now);
// Generate each individual subject feed
foreach($ebooksBySubject as $subject => $ebooks){
krsort($ebooks);
$subjectAtomFeed = new AtomFeed('Standard Ebooks - ' . (string)$subject . ' Ebooks', 'Standard Ebooks tagged with “' . strtolower($subject) . ',” most-recently-released first.', '/feeds/atom/subjects/' . Formatter::MakeUrlSafe((string)$subject), $webRoot . '/feeds/atom/subjects/' . Formatter::MakeUrlSafe((string)$subject) . '.xml', $ebooks);
SaveFeed($subjectAtomFeed, $force, $now);
usort($ebooks, 'SortByUpdatedDesc');
$title = 'Standard Ebooks - ' . $subjects[$subject]['name'] . ' Ebooks';
$subtitle = 'Standard Ebooks in the “' . strtolower($subjects[$subject]['name']) . '” subject, most-recently-released first.';
$subjectRssFeed = new RssFeed($title, $subtitle, '/feeds/rss/subjects/' . Formatter::MakeUrlSafe($subject), $webRoot . '/feeds/rss/subjects/' . Formatter::MakeUrlSafe($subject) . '.xml', $ebooks);
SaveFeed($subjectRssFeed, $force, $subjects[$subject]['name'], $subjects[$subject]['sortedname']);
$subjectAtomFeed = new AtomFeed($title, $subtitle, '/feeds/atom/subjects/' . Formatter::MakeUrlSafe($subject), $webRoot . '/feeds/atom/subjects/' . Formatter::MakeUrlSafe($subject) . '.xml', $ebooks);
SaveFeed($subjectAtomFeed, $force, $subjects[$subject]['name'], $subjects[$subject]['sortedname'], $now);
}
// Generate each individual collection feed
foreach($ebooksByCollection as $collection => $ebooks){
usort($ebooks, 'SortByUpdatedDesc');
$titleName = preg_replace('/^The /ius', '', $collections[$collection]['name']);
$title ='Standard Ebooks - Ebooks in the ' . $titleName . ' collection';
$subtitle = 'Standard Ebooks in the ' . $titleName . ' collection, most-recently-released first.';
$collectionRssFeed = new RssFeed($title, $subtitle, '/feeds/rss/collections/' . Formatter::MakeUrlSafe($collection), $webRoot . '/feeds/rss/collections/' . Formatter::MakeUrlSafe($collection) . '.xml', $ebooks);
SaveFeed($collectionRssFeed, $force, $collections[$collection]['name'], $collections[$collection]['sortedname']);
$collectionAtomFeed = new AtomFeed($title, $subtitle, '/feeds/atom/collections/' . Formatter::MakeUrlSafe($collection), $webRoot . '/feeds/atom/collections/' . Formatter::MakeUrlSafe($collection) . '.xml', $ebooks);
SaveFeed($collectionAtomFeed, $force, $collections[$collection]['name'], $collections[$collection]['sortedname'], $now);
}
// Generate each individual author feed
foreach($ebooksByAuthor as $collection => $ebooks){
usort($ebooks, 'SortByUpdatedDesc');
$title = 'Standard Ebooks - Ebooks by ' . $authors[$collection]['name'];
$subtitle = 'Standard Ebooks by ' . $authors[$collection]['name'] . ', most-recently-released first.';
$collectionRssFeed = new RssFeed($title, $subtitle, '/feeds/rss/authors/' . $authors[$collection]['id'], $webRoot . '/feeds/rss/authors/' . $authors[$collection]['id'] . '.xml', $ebooks);
SaveFeed($collectionRssFeed, $force, $authors[$collection]['name'], $authors[$collection]['sortedname']);
$collectionAtomFeed = new AtomFeed($title, $subtitle, '/feeds/atom/authors/' . $authors[$collection]['id'], $webRoot . '/feeds/atom/authors/' . $authors[$collection]['id'] . '.xml', $ebooks);
SaveFeed($collectionAtomFeed, $force, $authors[$collection]['name'], $authors[$collection]['sortedname'], $now);
}
?>

2
templates/FeedHowTo.php
View file

@ -2,6 +2,7 @@
<h2>Accessing the feeds</h2>
<p>Our New Releases feeds are accessible by the public. Access to our other, more detailed feeds is available to our <a href="/about#patrons-circle">Patrons Circle supporters</a> and our <a href="/about#corporate-sponsors">corporate sponsors</a>.</p>
<p><i>If you’re a Patrons Circle member, when prompted enter your email address and leave the password field blank to access a feed.</i></p>
<? if($GLOBALS['User'] === null){ ?>
<section id="individuals">
<h3>Access for individuals</h3>
<ul>
@ -16,4 +17,5 @@
<li><p>Software projects that are open-source and not-for-profit may be granted free access to our feeds. <a href="/about#editor-in-chief">Contact us</a> to inquire.</p></li>
</ul>
</section>
<? } ?>
</section>

2
www/bulk-downloads/collection.php
View file

@ -8,7 +8,7 @@ $canDownload = false;
$name = HttpInput::Str(GET, 'name', false) ?? '';
if($name != 'authors' && $name != 'collections' && $name != 'subjects' && $name != 'months'){
$name = 'subjects';
Template::Emit404();
}
if($GLOBALS['User'] !== null && $GLOBALS['User']->Benefits->CanBulkDownload){

19
www/feeds/atom/index.php
View file

@ -17,21 +17,24 @@ require_once('Core.php');
<p>The fifteen latest Standard Ebooks, most-recently-released first.</p>
</li>
<li>
<p><a href="/feeds/atom/all">All ebooks</a></p>
<p class="url"><?= SITE_URL ?>/feeds/atom/all</p>
<p><a href="<? if($GLOBALS['User'] !== null){ ?>https://<?= rawurlencode($GLOBALS['User']->Email) ?>@<?= SITE_DOMAIN ?><? } ?>/feeds/atom/all">All ebooks</a></p>
<p class="url"><? if($GLOBALS['User'] !== null){ ?>https://<?= rawurlencode($GLOBALS['User']->Email) ?>@<?= SITE_DOMAIN ?><? }else{ ?><?= SITE_URL ?><? } ?>/feeds/atom/all</p>
<p>All Standard Ebooks, most-recently-released first.</p>
</li>
</ul>
</section>
<section id="ebooks-by-subject">
<h2>Ebooks by subject</h2>
<section id="feeds-by-topic">
<h2>Feeds by topic</h2>
<ul class="feed">
<? foreach(SE_SUBJECTS as $subject){ ?>
<li>
<p><a href="/feeds/atom/subjects/<?= Formatter::MakeUrlSafe($subject) ?>"><?= Formatter::ToPlainText($subject) ?></a></p>
<p class="url"><?= SITE_URL ?>/feeds/atom/subjects/<?= Formatter::MakeUrlSafe($subject) ?></p>
<p><a href="/feeds/atom/authors">Feeds by author</a></p>
</li>
<li>
<p><a href="/feeds/atom/collections">Feeds by collection</a></p>
</li>
<li>
<p><a href="/feeds/atom/subjects">Feeds by subject</a></p>
</li>
<? } ?>
</ul>
</section>
</section>

2
www/feeds/atom/search.php
View file

@ -16,7 +16,7 @@ catch(\Exception $ex){
include(WEB_ROOT . '/404.php');
exit();
}
print("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<?xml-stylesheet href=\"/feeds/atom/style\" type=\"text/xsl\"?>\n");
print("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<?xml-stylesheet href=\"" . SITE_URL . "/feeds/atom/style\" type=\"text/xsl\"?>\n");
?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/">
<id><?= SITE_URL ?>/feeds/atom/all?query=<?= urlencode($query) ?></id>

22
www/feeds/atom/subjects/index.php
View file

@ -1,22 +0,0 @@
<?
require_once('Core.php');
?><?= Template::Header(['title' => 'Atom 1.0 Ebook Feeds by Subject', 'description' => 'A list of available Atom 1.0 feeds of Standard Ebooks ebooks by subject.']) ?>
<main>
<article>
<h1>Atom 1.0 Ebook Feeds by Subject</h1>
<?= Template::FeedHowTo() ?>
<section id="ebooks-by-subject">
<h2>Ebooks by subject</h2>
<ul class="feed">
<? foreach(SE_SUBJECTS as $subject){ ?>
<li>
<p><a href="/feeds/atom/subjects/<?= Formatter::MakeUrlSafe($subject) ?>"><?= Formatter::ToPlainText($subject) ?></a></p>
<p class="url"><?= SITE_URL ?>/feeds/atom/subjects/<?= Formatter::MakeUrlSafe($subject) ?></p>
</li>
<? } ?>
</ul>
</section>
</article>
</main>
<?= Template::Footer() ?>

79
www/feeds/collection.php Normal file
View file

@ -0,0 +1,79 @@
<?
require_once('Core.php');
use function Safe\apcu_fetch;
use function Safe\glob;
use function Safe\preg_replace;
use function Safe\usort;
$name = HttpInput::Str(GET, 'name', false) ?? '';
$type = HttpInput::Str(GET, 'type', false) ?? '';
if($name != 'authors' && $name != 'collections' && $name != 'subjects'){
Template::Emit404();
}
if($type != 'rss' && $type != 'atom'){
Template::Emit404();
}
$feeds = [];
$lcTitle = preg_replace('/s$/', '', $name);
$ucTitle = ucfirst($lcTitle);
$ucType = 'RSS 2.0';
if($type === 'atom'){
$ucType = 'Atom 1.0';
}
try{
$feeds = apcu_fetch('feeds-index-' . $type . '-' . $name);
}
catch(Safe\Exceptions\ApcuException $ex){
$files = glob(WEB_ROOT . '/feeds/' . $type . '/' . $name . '/*.xml');
$feeds = [];
foreach($files as $file){
$obj = new stdClass();
$obj->Url = '/feeds/' . $type . '/' . $name . '/' . basename($file, '.xml');
$obj->Label = exec('attr -g se-label ' . escapeshellarg($file)) ?: null;
if($obj->Label == null){
$obj->Label = basename($file, '.xml');
}
$obj->LabelSort = exec('attr -g se-label-sort ' . escapeshellarg($file)) ?: null;
if($obj->LabelSort == null){
$obj->LabelSort = basename($file, '.xml');
}
$feeds[] = $obj;
}
$collator = Collator::create('en_US'); // Used for sorting letters with diacritics like in author names
if($collator !== null){
usort($feeds, function($a, $b) use($collator){ return $collator->compare($a->LabelSort, $b->LabelSort); });
}
apcu_store('feeds-index-' . $type . '-' . $name, $feeds, 43200); // 12 hours
}
?><?= Template::Header(['title' => $ucType . ' Ebook Feeds by ' . $ucTitle, 'description' => 'A list of available ' . $ucType . ' feeds of Standard Ebooks ebooks by ' . $lcTitle . '.']) ?>
<main>
<article>
<h1><?= $ucType ?> Ebook Feeds by <?= $ucTitle ?></h1>
<?= Template::FeedHowTo() ?>
<section id="ebooks-by-<?= $lcTitle ?>">
<h2>Ebooks by <?= $lcTitle ?></h2>
<ul class="feed">
<? foreach($feeds as $feed){ ?>
<li>
<p><a href="<? if($GLOBALS['User'] !== null){ ?>https://<?= rawurlencode($GLOBALS['User']->Email) ?>@<?= SITE_DOMAIN ?><? } ?><?= Formatter::ToPlainText($feed->Url) ?>"><?= Formatter::ToPlainText($feed->Label) ?></a></p>
<p class="url"><? if($GLOBALS['User'] !== null){ ?>https://<?= rawurlencode($GLOBALS['User']->Email) ?>@<?= SITE_DOMAIN ?><? }else{ ?><?= SITE_URL ?><? } ?><?= Formatter::ToPlainText($feed->Url) ?></p>
</li>
<? } ?>
</ul>
</section>
</article>
</main>
<?= Template::Footer() ?>

4
www/feeds/index.php
View file

@ -18,8 +18,8 @@ require_once('Core.php');
<p>They’re also perfect for scripting, or for libraries or other organizations who wish to download, process, and keep up to date with our catalog of ebooks.</p>
<ul class="feed">
<li>
<p><a href="/feeds/opds">The Standard Ebooks OPDS feed</a></p>
<p class="url"><?= SITE_URL ?>/feeds/opds</p>
<p><a href="<? if($GLOBALS['User'] !== null){ ?>https://<?= rawurlencode($GLOBALS['User']->Email) ?>@<?= SITE_DOMAIN ?><? } ?>/feeds/opds">The Standard Ebooks OPDS feed</a></p>
<p class="url"><? if($GLOBALS['User'] !== null){ ?>https://<?= rawurlencode($GLOBALS['User']->Email) ?>@<?= SITE_DOMAIN ?><? }else{ ?><?= SITE_URL ?><? } ?>/feeds/opds</p>
</li>
</ul>
</section>

2
www/feeds/opds/search.php
View file

@ -15,7 +15,7 @@ catch(\Exception $ex){
http_response_code(500);
exit();
}
print("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<?xml-stylesheet href=\"/feeds/opds/style\" type=\"text/xsl\"?>\n");
print("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<?xml-stylesheet href=\"". SITE_URL . "/feeds/opds/style\" type=\"text/xsl\"?>\n");
?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:schema="http://schema.org/" xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/">
<id><?= SITE_URL ?>/feeds/opds/all?query=<?= urlencode($query) ?></id>

17
www/feeds/rss/index.php
View file

@ -8,7 +8,7 @@ require_once('Core.php');
<p>RSS feeds are the predecessors of <a href="/feeds/atom">Atom feeds</a>. They contain less information than Atom feeds, but might be better supported by some news readers.</p>
<?= Template::FeedHowTo() ?>
<section id="general-feeds">
<h2>General Feeds</h2>
<h2>General feeds</h2>
<ul class="feed">
<li>
<p><a href="/feeds/rss/new-releases">New releases</a> (Public)</p>
@ -22,15 +22,18 @@ require_once('Core.php');
</li>
</ul>
</section>
<section id="ebooks-by-subject">
<h2>Ebooks by subject</h2>
<section id="ebooks-by-collection">
<h2>Feeds by topic</h2>
<ul class="feed">
<? foreach(SE_SUBJECTS as $subject){ ?>
<li>
<p><a href="/feeds/rss/subjects/<?= Formatter::MakeUrlSafe($subject) ?>"><?= Formatter::ToPlainText($subject) ?></a></p>
<p class="url"><?= SITE_URL ?>/feeds/rss/subjects/<?= Formatter::MakeUrlSafe($subject) ?></p>
<p><a href="/feeds/rss/authors">Feeds by author</a></p>
</li>
<li>
<p><a href="/feeds/rss/collections">Feeds by collection</a></p>
</li>
<li>
<p><a href="/feeds/rss/subjects">Feeds by subject</a></p>
</li>
<? } ?>
</ul>
</section>
</section>

2
www/feeds/rss/search.php
View file

@ -16,7 +16,7 @@ catch(\Exception $ex){
include(WEB_ROOT . '/404.php');
exit();
}
print("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<?xml-stylesheet href=\"/feeds/rss/style\" type=\"text/xsl\"?>\n");
print("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n<?xml-stylesheet href=\"" . SITE_URL . "/feeds/rss/style\" type=\"text/xsl\"?>\n");
?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/" xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/">
<channel>

22
www/feeds/rss/subjects/index.php
View file

@ -1,22 +0,0 @@
<?
require_once('Core.php');
?><?= Template::Header(['title' => 'RSS 2.0 Ebook Feeds by Subject', 'description' => 'A list of available RSS 2.0 feeds of Standard Ebooks ebooks by subject.']) ?>
<main>
<article>
<h1>RSS 2.0 Ebook Feeds by Subject</h1>
<?= Template::FeedHowTo() ?>
<section id="ebooks-by-subject">
<h2>Ebooks by subject</h2>
<ul class="feed">
<? foreach(SE_SUBJECTS as $subject){ ?>
<li>
<p><a href="/feeds/rss/subjects/<?= Formatter::MakeUrlSafe($subject) ?>"><?= Formatter::ToPlainText($subject) ?></a></p>
<p class="url"><?= SITE_URL ?>/feeds/rss/subjects/<?= Formatter::MakeUrlSafe($subject) ?></p>
</li>
<? } ?>
</ul>
</section>
</article>
</main>
<?= Template::Footer() ?>