"Search",
"version" => "0.6.2",
"author" => "Starbeamrainbowlabs",
"description" => "Adds proper search functionality to Pepperminty Wiki using an inverted index to provide a full text search engine. If pages don't show up, then you might have hit a stop word. If not, try requesting the `invindex-rebuild` action to rebuild the inverted index from scratch.",
"id" => "feature-search",
"code" => function() {
global $settings;
/**
* @api {get} ?action=index&page={pageName} Get an index of words for a given page
* @apiName SearchIndex
* @apiGroup Search
* @apiPermission Anonymous
* @apiDescription For debugging purposes. Be warned - the format could change at any time!
*
* @apiParam {string} page The page to generate a word index page.
*/
/*
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*/
add_action("index", function() {
global $settings, $env;
$breakable_chars = "\r\n\t .,\\/!\"£$%^&*[]()+`_~#";
header("content-type: text/plain");
$source = file_get_contents("$env->storage_prefix$env->page.md");
$index = search::index($source);
var_dump($env->page);
var_dump($source);
var_dump($index);
});
/**
* @api {get} ?action=invindex-rebuild Rebuild the inverted search index from scratch
* @apiDescription Causes the inverted search index to be completely rebuilt from scratch. Can take a while for large wikis!
* @apiName SearchInvindexRebuild
* @apiGroup Search
* @apiPermission Admin
*
* @apiParam {string} secret Optional. Specify the secret from peppermint.json here in order to rebuild the search index without logging in.
*/
/*
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*/
add_action("invindex-rebuild", function() {
global $env, $settings;
if($env->is_admin ||
(
!empty($_POST["secret"]) &&
$_POST["secret"] === $settings->secret
)
)
search::rebuild_invindex();
else
{
http_response_code(401);
exit(page_renderer::render_main("Error - Search index regenerator - $settings->sitename", "Error: You aren't allowed to regenerate the search index. Try logging in as an admin, or setting the secret POST parameter to $settings->sitename's secret - which can be found in $settings->sitename's peppermint.json file.
"));
}
});
/**
* @api {get} ?action=idindex-show Show the id index
* @apiDescription Outputs the id index. Useful if you need to verify that it's working as expected. Output is a json object.
* @apiName SearchShowIdIndex
* @apiGroup Search
* @apiPermission Anonymous
*/
add_action("idindex-show", function() {
global $idindex;
header("content-type: application/json; charset=UTF-8");
exit(json_encode($idindex, JSON_PRETTY_PRINT));
});
/**
* @api {get} ?action=search&query={text}[&format={format}] Search the wiki for a given query string
* @apiName Search
* @apiGroup Search
* @apiPermission Anonymous
*
* @apiParam {string} query The query string to search for.
* @apiParam {string} format Optional. Valid values: html, json. In json mode an object is returned with page names as keys, values as search result information - sorted in ranking order.
*/
/*
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*/
add_action("search", function() {
global $settings, $env, $pageindex, $paths;
// Create the inverted index if it doesn't exist.
// todo In the future perhaps a CLI for this would be good?
if(!file_exists($paths->searchindex))
search::rebuild_invindex(false);
if(!isset($_GET["query"]))
exit(page_renderer::render("No Search Terms - Error - $settings->sitename", "You didn't specify any search terms. Try typing some into the box above.
"));
$search_start = microtime(true);
$invindex = search::load_invindex($paths->searchindex);
$results = search::query_invindex($_GET["query"], $invindex);
$resultCount = count($results);
foreach($results as &$result) {
$result["context"] = search::extract_context(
$_GET["query"],
file_get_contents($env->storage_prefix . $result["pagename"] . ".md")
);
}
if(!empty($_GET["format"]) && $_GET["format"] == "json") {
header("content-type: application/json");
$json_results = new stdClass();
foreach($results as $result) $json_results->{$result["pagename"]} = $result;
exit(json_encode($json_results));
}
$env->perfdata->search_time = round((microtime(true) - $search_start)*1000, 3);
$title = $_GET["query"] . " - Search results - $settings->sitename";
$content = "\n";
$content .= "Search Results
";
/// Search Box ///
$content .= "";
$content .= "Found $resultCount " . ($resultCount === 1 ? "result" : "results") . " in " . $env->perfdata->search_time . "ms. ";
$query = $_GET["query"];
if(isset($pageindex->$query))
{
$content .= "There's a page on $settings->sitename called $query.";
}
else
{
$content .= "There isn't a page called $query on $settings->sitename, but you ";
if((!$settings->anonedits && !$env->is_logged_in) || !$settings->editing)
{
$content .= "do not have permission to create it.";
if(!$env->is_logged_in)
{
$content .= " You could try logging in.";
}
}
else
{
$content .= "can create it.";
}
}
$content .= "
";
if(module_exists("page-list")) {
$nterms = search::tokenize($query);
$nterms_regex = implode("|", array_map(function($nterm) {
return preg_quote(strtolower(trim($nterm)));
}, $nterms));
$all_tags = get_all_tags();
$matching_tags = [];
foreach($all_tags as $tag) {
if(preg_match("/$nterms_regex/i", trim($tag)) > 0)
$matching_tags[] = $tag;
}
if(count($matching_tags) > 0) {
$content .= "Matching tags: ";
foreach($matching_tags as $tag) {
$content .= "\t" . htmlentities($tag) . " \n";
}
$content .= "
";
}
}
$i = 0; // todo use $_GET["offset"] and $_GET["result-count"] or something
foreach($results as $result)
{
$link = "?page=" . rawurlencode($result["pagename"]);
$pagesource = file_get_contents($env->storage_prefix . $result["pagename"] . ".md");
//echo("Extracting context for result " . $result["pagename"] . ".\n");
$context = $result["context"];
if(mb_strlen($context) === 0)
$context = mb_substr($pagesource, 0, $settings->search_characters_context * 2);
//echo("'Generated search context for " . $result["pagename"] . ": $context'\n");
$context = search::highlight_context(
$_GET["query"],
preg_replace('/page.md", null, null, null, $settings->search_characters_context * 2));
if($pageindex->{$env->page}->size > $settings->search_characters_context * 2)
$context .= "...";
}*/
$tag_list = "";
foreach($pageindex->{$result["pagename"]}->tags ?? [] as $tag) $tag_list .= "$tag";
$tag_list .= "\n";
// Make redirect pages italics
if(!empty($pageindex->{$result["pagename"]}->redirect))
$result["pagename"] = "{$result["pagename"]}";
// We add 1 to $i here to convert it from an index to a result
// number as people expect it to start from 1
$content .= "\n";
$content .= "
\n";
$content .= "
$context
\n";
$content .= "