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Add parser for TTRSS search strings
This commit is contained in:
J. King
parent
95de375e0b
commit
85307bc90a
3 changed files with 488 additions and 0 deletions
361
lib/REST/TinyTinyRSS/Search.php
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361
lib/REST/TinyTinyRSS/Search.php
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@ -0,0 +1,361 @@
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<?php
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/** @license MIT
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* Copyright 2017 J. King, Dustin Wilson et al.
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* See LICENSE and AUTHORS files for details */
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declare(strict_types=1);
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namespace JKingWeb\Arsse\REST\TinyTinyRSS;
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use JKingWeb\Arsse\Context\Context;
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use JKingWeb\Arsse\Misc\Date;
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class Search {
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const STATE_BEFORE_TOKEN = 0;
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const STATE_BEFORE_TOKEN_QUOTED = 1;
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const STATE_IN_DATE = 2;
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const STATE_IN_DATE_QUOTED = 3;
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const STATE_IN_TOKEN_OR_TAG = 4;
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const STATE_IN_TOKEN_OR_TAG_QUOTED = 5;
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const STATE_IN_TOKEN = 6;
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const STATE_IN_TOKEN_QUOTED = 7;
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const FIELDS_BOOLEAN = [
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"unread" => "unread",
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"star" => "starred",
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"note" => "annotated",
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"pub" => "published", // TODO: not implemented
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];
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const FIELDS_TEXT = [
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"title" => "titleTerms",
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"author" => "authorTerms",
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"note" => "annotationTerms",
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"" => "searchTerms",
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];
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public static function parse(string $search, Context $context = null) {
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// normalize the input
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$search = strtolower(trim(preg_replace("<\s+>", " ", $search)));
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// set initial state
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$tokens = [];
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$pos = -1;
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$stop = strlen($search);
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$state = self::STATE_BEFORE_TOKEN;
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$buffer = "";
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$tag = "";
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$flag_negative = false;
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$context = $context ?? new Context;
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// process
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try {
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while (++$pos <= $stop) {
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$char = @$search[$pos];
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switch ($state) {
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case self::STATE_BEFORE_TOKEN:
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switch ($char) {
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case "":
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continue 3;
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case " ":
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continue 3;
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case '"':
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if ($flag_negative) {
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$buffer .= $char;
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$state = self::STATE_IN_TOKEN_OR_TAG;
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} else {
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$state = self::STATE_BEFORE_TOKEN_QUOTED;
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}
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continue 3;
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case "-":
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if (!$flag_negative) {
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$flag_negative = true;
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} else {
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$buffer .= $char;
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$state = self::STATE_IN_TOKEN_OR_TAG;
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}
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continue 3;
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case "@":
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$state = self::STATE_IN_DATE;
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continue 3;
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case ":":
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$state = self::STATE_IN_TOKEN;
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continue 3;
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default:
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$buffer .= $char;
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$state = self::STATE_IN_TOKEN_OR_TAG;
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continue 3;
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}
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case self::STATE_BEFORE_TOKEN_QUOTED:
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switch ($char) {
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case "":
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continue 3;
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case '"':
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if (($pos + 1 == $stop) || $search[$pos + 1] === " ") {
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$context = self::processToken($context, $buffer, $tag, $flag_negative, false);
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$state = self::STATE_BEFORE_TOKEN;
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$flag_negative = false;
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$buffer = $tag = "";
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} elseif ($search[$pos + 1] === '"') {
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$buffer .= '"';
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$pos++;
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$state = self::STATE_IN_TOKEN_OR_TAG_QUOTED;
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} else {
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$state = self::STATE_IN_TOKEN_OR_TAG;
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}
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continue 3;
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case "\\":
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if ($pos + 1 == $stop) {
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$buffer .= $char;
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} elseif ($search[$pos + 1] === '"') {
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$buffer .= '"';
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$pos++;
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} else {
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$buffer .= $char;
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}
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$state = self::STATE_IN_TOKEN_OR_TAG_QUOTED;
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continue 3;
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case "-":
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if (!$flag_negative) {
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$flag_negative = true;
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} else {
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$buffer .= $char;
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$state = self::STATE_IN_TOKEN_OR_TAG_QUOTED;
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}
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continue 3;
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case "@":
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$state = self::STATE_IN_DATE_QUOTED;
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continue 3;
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case ":":
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$state = self::STATE_IN_TOKEN_QUOTED;
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continue 3;
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default:
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$buffer .= $char;
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$state = self::STATE_IN_TOKEN_OR_TAG_QUOTED;
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continue 3;
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}
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case self::STATE_IN_DATE:
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while ($pos < $stop && $search[$pos] !== " ") {
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$buffer .= $search[$pos++];
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}
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$context = self::processToken($context, $buffer, $tag, $flag_negative, true);
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$state = self::STATE_BEFORE_TOKEN;
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$flag_negative = false;
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$buffer = $tag = "";
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continue 2;
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case self::STATE_IN_DATE_QUOTED:
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switch ($char) {
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case "":
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case '"':
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if (($pos + 1 >= $stop) || $search[$pos + 1] === " ") {
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$context = self::processToken($context, $buffer, $tag, $flag_negative, true);
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$state = self::STATE_BEFORE_TOKEN;
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$flag_negative = false;
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$buffer = $tag = "";
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} elseif ($search[$pos + 1] === '"') {
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$buffer .= '"';
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$pos++;
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} else {
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$state = self::STATE_IN_DATE;
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}
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continue 3;
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case "\\":
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if ($pos + 1 == $stop) {
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$buffer .= $char;
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} elseif ($search[$pos + 1] === '"') {
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$buffer .= '"';
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$pos++;
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} else {
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$buffer .= $char;
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}
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continue 3;
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default:
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$buffer .= $char;
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continue 3;
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}
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case self::STATE_IN_TOKEN:
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while ($pos < $stop && $search[$pos] !== " ") {
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$buffer .= $search[$pos++];
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}
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if (!strlen($tag)) {
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$buffer = ":".$buffer;
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}
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$context = self::processToken($context, $buffer, $tag, $flag_negative, false);
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$state = self::STATE_BEFORE_TOKEN;
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$flag_negative = false;
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$buffer = $tag = "";
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continue 2;
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case self::STATE_IN_TOKEN_QUOTED:
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switch ($char) {
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case "":
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case '"':
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if (($pos + 1 >= $stop) || $search[$pos + 1] === " ") {
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if (!strlen($tag)) {
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$buffer = ":".$buffer;
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}
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$context = self::processToken($context, $buffer, $tag, $flag_negative, false);
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$state = self::STATE_BEFORE_TOKEN;
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$flag_negative = false;
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$buffer = $tag = "";
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} elseif ($search[$pos + 1] === '"') {
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$buffer .= '"';
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$pos++;
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} else {
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$state = self::STATE_IN_TOKEN;
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}
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continue 3;
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case "\\":
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if ($pos + 1 == $stop) {
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$buffer .= $char;
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} elseif ($search[$pos + 1] === '"') {
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$buffer .= '"';
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$pos++;
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} else {
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$buffer .= $char;
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}
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continue 3;
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default:
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$buffer .= $char;
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continue 3;
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}
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case self::STATE_IN_TOKEN_OR_TAG:
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switch ($char) {
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case "":
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case " ":
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$context = self::processToken($context, $buffer, $tag, $flag_negative, false);
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$state = self::STATE_BEFORE_TOKEN;
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$flag_negative = false;
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$buffer = $tag = "";
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continue 3;
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case ":";
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$tag = $buffer;
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$buffer = "";
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$state = self::STATE_IN_TOKEN;
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continue 3;
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default:
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$buffer .= $char;
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continue 3;
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}
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case self::STATE_IN_TOKEN_OR_TAG_QUOTED:
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switch ($char) {
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case "":
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case '"':
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if (($pos + 1 >= $stop) || $search[$pos + 1] === " ") {
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$context = self::processToken($context, $buffer, $tag, $flag_negative, false);
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$state = self::STATE_BEFORE_TOKEN;
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$flag_negative = false;
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$buffer = $tag = "";
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} elseif ($search[$pos + 1] === '"') {
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$buffer .= '"';
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$pos++;
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} else {
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$state = self::STATE_IN_TOKEN_OR_TAG;
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}
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continue 3;
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case "\\":
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if ($pos + 1 == $stop) {
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$buffer .= $char;
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} elseif ($search[$pos + 1] === '"') {
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$buffer .= '"';
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$pos++;
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} else {
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$buffer .= $char;
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}
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continue 3;
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case ":":
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$tag = $buffer;
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$buffer = "";
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$state = self::STATE_IN_TOKEN_QUOTED;
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continue 3;
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default:
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$buffer .= $char;
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continue 3;
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}
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default:
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throw new \Exception; // @codeCoverageIgnore
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}
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}
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} catch (Exception $e) {
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return null;
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}
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return $context;
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}
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protected static function processToken(Context $c, string $value, string $tag, bool $neg, bool $date): Context {
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if (!strlen($value) && !strlen($tag)) {
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return $c;
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} elseif (!strlen($value)) {
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// if a tag has an empty value, the tag is treated as a search term instead
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$value = "$tag:";
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$tag = "";
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}
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if ($date) {
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return self::setDate($value, $c, $neg);
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} elseif (isset(self::FIELDS_BOOLEAN[$tag])) {
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return self::setBoolean($tag, $value, $c, $neg);
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} else {
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return self::addTerm($tag, $value, $c, $neg);
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}
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}
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protected static function addTerm(string $tag, string $value, Context $c, bool $neg): Context {
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$c = $neg ? $c->not : $c;
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$type = self::FIELDS_TEXT[$tag] ?? "";
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if (!$type) {
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$value = "$tag:$value";
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$type = self::FIELDS_TEXT[""];
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}
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return $c->$type(array_merge($c->$type ?? [], [$value]));
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}
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protected static function setDate(string $value, Context $c, bool $neg): Context {
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$spec = Date::normalize($value);
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// TTRSS treats invalid dates as the start of the Unix epoch; we ignore them instead
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if (!$spec) {
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return $c;
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}
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$day = $spec->format("Y-m-d");
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$start = $day."T00:00:00+00:00";
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$end = $day."T23:59:59+00:00";
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// if a date is already set, the same date is a no-op; anything else is a contradiction
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$cc = $neg ? $c->not : $c;
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if ($cc->modifiedSince() || $cc->notModifiedSince()) {
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if (!$cc->modifiedSince() || !$cc->notModifiedSince() || $cc->modifiedSince->format("c") !== $start || $cc->notModifiedSince->format("c") !== $end) {
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// FIXME: multiple negative dates should be allowed, but the design of the Context class does not support this
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throw new Exception;
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} else {
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return $c;
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}
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}
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$cc->modifiedSince($start);
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$cc->notModifiedSince($end);
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return $c;
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}
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protected static function setBoolean(string $tag, string $value, Context $c, bool $neg): Context {
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$set = ["true" => true, "false" => false][$value] ?? null;
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if (is_null($set)) {
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return self::addTerm($tag, $value, $c, $neg);
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} else {
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// apply negation
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$set = $neg ? !$set : $set;
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if ($tag === "pub") {
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// TODO: this needs to be implemented correctly if the Published feed is implemented
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// currently specifying true will always yield an empty result (nothing is ever published), and specifying false is a no-op (matches everything)
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if ($set) {
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throw new Exception;
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} else {
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return $c;
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}
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} else {
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$field = (self::FIELDS_BOOLEAN[$tag] ?? "");
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if (!$c->$field()) {
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// field has not yet been set; set it
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return $c->$field($set);
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} elseif ($c->$field == $set) {
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// field is already set to same value; do nothing
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return $c;
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} else {
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// contradiction: query would return no results
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throw new Exception;
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}
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}
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}
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}
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}
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126
tests/cases/REST/TinyTinyRSS/TestSearch.php
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126
tests/cases/REST/TinyTinyRSS/TestSearch.php
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@ -0,0 +1,126 @@
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<?php
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/** @license MIT
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* Copyright 2017 J. King, Dustin Wilson et al.
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* See LICENSE and AUTHORS files for details */
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declare(strict_types=1);
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namespace JKingWeb\Arsse\TestCase\REST\TinyTinyRSS;
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use JKingWeb\Arsse\Context\Context;
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use JKingWeb\Arsse\REST\TinyTinyRSS\Search;
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/** @covers \JKingWeb\Arsse\REST\TinyTinyRSS\Search */
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class TestSearch extends \JKingWeb\Arsse\Test\AbstractTest {
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public function provideSearchStrings() {
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return [
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'Blank string' => ["", new Context],
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'Whitespace only' => [" \n \t", new Context],
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'Simple bare token' => ['OOK', (new Context)->searchTerms(["ook"])],
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'Simple negative bare token' => ['-OOK', (new Context)->not->searchTerms(["ook"])],
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'Simple quoted token' => ['"OOK eek"', (new Context)->searchTerms(["ook eek"])],
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'Simple negative quoted token' => ['"-OOK eek"', (new Context)->not->searchTerms(["ook eek"])],
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'Simple bare tokens' => ['OOK eek', (new Context)->searchTerms(["ook", "eek"])],
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'Simple mixed bare tokens' => ['-OOK eek', (new Context)->not->searchTerms(["ook"])->searchTerms(["eek"])],
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'Unclosed quoted token' => ['"OOK eek', (new Context)->searchTerms(["ook eek"])],
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'Unclosed quoted token 2' => ['"OOK eek" "', (new Context)->searchTerms(["ook eek"])],
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'Broken quoted token 1' => ['"-OOK"eek"', (new Context)->not->searchTerms(["ookeek\""])],
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'Broken quoted token 2' => ['""eek"', (new Context)->searchTerms(["eek\""])],
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'Broken quoted token 3' => ['"-"eek"', (new Context)->not->searchTerms(["eek\""])],
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'Empty quoted token' => ['""', new Context],
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'Simple quoted tokens' => ['"OOK eek" "eek ack"', (new Context)->searchTerms(["ook eek", "eek ack"])],
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'Bare blank tag' => [':ook', (new Context)->searchTerms([":ook"])],
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'Quoted blank tag' => ['":ook"', (new Context)->searchTerms([":ook"])],
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'Bare negative blank tag' => ['-:ook', (new Context)->not->searchTerms([":ook"])],
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'Quoted negative blank tag' => ['"-:ook"', (new Context)->not->searchTerms([":ook"])],
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'Bare valueless blank tag' => [':', (new Context)->searchTerms([":"])],
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'Quoted valueless blank tag' => ['":"', (new Context)->searchTerms([":"])],
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'Bare negative valueless blank tag' => ['-:', (new Context)->not->searchTerms([":"])],
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'Quoted negative valueless blank tag' => ['"-:"', (new Context)->not->searchTerms([":"])],
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'Double negative' => ['--eek', (new Context)->not->searchTerms(["-eek"])],
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'Double negative 2' => ['--@eek', (new Context)->not->searchTerms(["-@eek"])],
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'Double negative 3' => ['"--@eek"', (new Context)->not->searchTerms(["-@eek"])],
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'Double negative 4' => ['"--eek"', (new Context)->not->searchTerms(["-eek"])],
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'Negative before quote' => ['-"ook"', (new Context)->not->searchTerms(["\"ook\""])],
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'Bare unread tag true' => ['UNREAD:true', (new Context)->unread(true)],
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'Bare unread tag false' => ['UNREAD:false', (new Context)->unread(false)],
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'Bare negative unread tag true' => ['-unread:true', (new Context)->unread(false)],
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'Bare negative unread tag false' => ['-unread:false', (new Context)->unread(true)],
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'Quoted unread tag true' => ['"UNREAD:true"', (new Context)->unread(true)],
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'Quoted unread tag false' => ['"UNREAD:false"', (new Context)->unread(false)],
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'Quoted negative unread tag true' => ['"-unread:true"', (new Context)->unread(false)],
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'Quoted negative unread tag false' => ['"-unread:false"', (new Context)->unread(true)],
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'Bare star tag true' => ['STAR:true', (new Context)->starred(true)],
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'Bare star tag false' => ['STAR:false', (new Context)->starred(false)],
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'Bare negative star tag true' => ['-star:true', (new Context)->starred(false)],
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'Bare negative star tag false' => ['-star:false', (new Context)->starred(true)],
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'Quoted star tag true' => ['"STAR:true"', (new Context)->starred(true)],
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'Quoted star tag false' => ['"STAR:false"', (new Context)->starred(false)],
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'Quoted negative star tag true' => ['"-star:true"', (new Context)->starred(false)],
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'Quoted negative star tag false' => ['"-star:false"', (new Context)->starred(true)],
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'Bare note tag true' => ['NOTE:true', (new Context)->annotated(true)],
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'Bare note tag false' => ['NOTE:false', (new Context)->annotated(false)],
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'Bare negative note tag true' => ['-note:true', (new Context)->annotated(false)],
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'Bare negative note tag false' => ['-note:false', (new Context)->annotated(true)],
|
||||
'Quoted note tag true' => ['"NOTE:true"', (new Context)->annotated(true)],
|
||||
'Quoted note tag false' => ['"NOTE:false"', (new Context)->annotated(false)],
|
||||
'Quoted negative note tag true' => ['"-note:true"', (new Context)->annotated(false)],
|
||||
'Quoted negative note tag false' => ['"-note:false"', (new Context)->annotated(true)],
|
||||
'Bare pub tag true' => ['PUB:true', null],
|
||||
'Bare pub tag false' => ['PUB:false', new Context],
|
||||
'Bare negative pub tag true' => ['-pub:true', new Context],
|
||||
'Bare negative pub tag false' => ['-pub:false', null],
|
||||
'Quoted pub tag true' => ['"PUB:true"', null],
|
||||
'Quoted pub tag false' => ['"PUB:false"', new Context],
|
||||
'Quoted negative pub tag true' => ['"-pub:true"', new Context],
|
||||
'Quoted negative pub tag false' => ['"-pub:false"', null],
|
||||
'Non-boolean unread tag' => ['unread:maybe', (new Context)->searchTerms(["unread:maybe"])],
|
||||
'Non-boolean star tag' => ['star:maybe', (new Context)->searchTerms(["star:maybe"])],
|
||||
'Non-boolean pub tag' => ['pub:maybe', (new Context)->searchTerms(["pub:maybe"])],
|
||||
'Non-boolean note tag' => ['note:maybe', (new Context)->annotationTerms(["maybe"])],
|
||||
'Valueless unread tag' => ['unread:', (new Context)->searchTerms(["unread:"])],
|
||||
'Valueless star tag' => ['star:', (new Context)->searchTerms(["star:"])],
|
||||
'Valueless pub tag' => ['pub:', (new Context)->searchTerms(["pub:"])],
|
||||
'Valueless note tag' => ['note:', (new Context)->searchTerms(["note:"])],
|
||||
'Valueless title tag' => ['title:', (new Context)->searchTerms(["title:"])],
|
||||
'Valueless author tag' => ['author:', (new Context)->searchTerms(["author:"])],
|
||||
'Escaped quote 1' => ['"""I say, Jeeves!"""', (new Context)->searchTerms(["\"i say, jeeves!\""])],
|
||||
'Escaped quote 2' => ['"\\"I say, Jeeves!\\""', (new Context)->searchTerms(["\"i say, jeeves!\""])],
|
||||
'Escaped quote 3' => ['\\"I say, Jeeves!\\"', (new Context)->searchTerms(["\\\"i", "say,", "jeeves!\\\""])],
|
||||
'Escaped quote 4' => ['"\\"\\I say, Jeeves!\\""', (new Context)->searchTerms(["\"\\i say, jeeves!\""])],
|
||||
'Escaped quote 5' => ['"\\I say, Jeeves!"', (new Context)->searchTerms(["\\i say, jeeves!"])],
|
||||
'Escaped quote 6' => ['"\\"I say, Jeeves!\\', (new Context)->searchTerms(["\"i say, jeeves!\\"])],
|
||||
'Escaped quote 7' => ['"\\', (new Context)->searchTerms(["\\"])],
|
||||
'Quoted author tag 1' => ['"author:Neal Stephenson"', (new Context)->authorTerms(["neal stephenson"])],
|
||||
'Quoted author tag 2' => ['"author:Jo ""Cap\'n Tripps"" Ashburn"', (new Context)->authorTerms(["jo \"cap'n tripps\" ashburn"])],
|
||||
'Quoted author tag 3' => ['"author:Jo \\"Cap\'n Tripps\\" Ashburn"', (new Context)->authorTerms(["jo \"cap'n tripps\" ashburn"])],
|
||||
'Quoted author tag 4' => ['"author:Jo ""Cap\'n Tripps"Ashburn"', (new Context)->authorTerms(["jo \"cap'n trippsashburn\""])],
|
||||
'Quoted author tag 5' => ['"author:Jo ""Cap\'n Tripps\ Ashburn"', (new Context)->authorTerms(["jo \"cap'n tripps\\ ashburn"])],
|
||||
'Quoted author tag 6' => ['"author:Neal Stephenson\\', (new Context)->authorTerms(["neal stephenson\\"])],
|
||||
'Quoted title tag' => ['"title:Generic title"', (new Context)->titleTerms(["generic title"])],
|
||||
'Contradictory booleans' => ['unread:true -unread:true', null],
|
||||
'Doubled boolean' => ['unread:true unread:true', (new Context)->unread(true)],
|
||||
'Bare blank date' => ['@', new Context],
|
||||
'Quoted blank date' => ['"@"', new Context],
|
||||
'Bare ISO date' => ['@2019-03-01', (new Context)->modifiedSince("2019-03-01T00:00:00Z")->notModifiedSince("2019-03-01T23:59:59Z")],
|
||||
'Quoted ISO date' => ['"@March 1st, 2019"', (new Context)->modifiedSince("2019-03-01T00:00:00Z")->notModifiedSince("2019-03-01T23:59:59Z")],
|
||||
'Bare negative ISO date' => ['-@2019-03-01', (new Context)->not->modifiedSince("2019-03-01T00:00:00Z")->not->notModifiedSince("2019-03-01T23:59:59Z")],
|
||||
'Quoted negative English date' => ['"-@March 1st, 2019"', (new Context)->not->modifiedSince("2019-03-01T00:00:00Z")->not->notModifiedSince("2019-03-01T23:59:59Z")],
|
||||
'Invalid date' => ['@Bugaboo', new Context],
|
||||
'Escaped quoted date 1' => ['"@""Yesterday" and today', (new Context)->searchTerms(["and", "today"])],
|
||||
'Escaped quoted date 2' => ['"@\\"Yesterday" and today', (new Context)->searchTerms(["and", "today"])],
|
||||
'Escaped quoted date 3' => ['"@Yesterday\\', new Context],
|
||||
'Escaped quoted date 4' => ['"@Yesterday\\and today', new Context],
|
||||
'Escaped quoted date 5' => ['"@Yesterday"and today', (new Context)->searchTerms(["today"])],
|
||||
'Contradictory dates' => ['@Yesterday @Today', null],
|
||||
'Doubled date' => ['"@March 1st, 2019" @2019-03-01', (new Context)->modifiedSince("2019-03-01T00:00:00Z")->notModifiedSince("2019-03-01T23:59:59Z")],
|
||||
'Doubled negative date' => ['"-@March 1st, 2019" -@2019-03-01', (new Context)->not->modifiedSince("2019-03-01T00:00:00Z")->not->notModifiedSince("2019-03-01T23:59:59Z")],
|
||||
];
|
||||
}
|
||||
|
||||
/** @dataProvider provideSearchStrings */
|
||||
public function testApplySearchToContext(string $search, $exp) {
|
||||
$act = Search::parse($search);
|
||||
//var_export($act);
|
||||
$this->assertEquals($exp, $act);
|
||||
}
|
||||
}
|
||||
|
|
@ -99,6 +99,7 @@
|
|||
<file>cases/REST/NextCloudNews/PDO/TestV1_2.php</file>
|
||||
</testsuite>
|
||||
<testsuite name="TTRSS">
|
||||
<file>cases/REST/TinyTinyRSS/TestSearch.php</file>
|
||||
<file>cases/REST/TinyTinyRSS/TestAPI.php</file>
|
||||
<file>cases/REST/TinyTinyRSS/TestIcon.php</file>
|
||||
<file>cases/REST/TinyTinyRSS/PDO/TestAPI.php</file>
|
||||
|
|
|
|||
Loading…
Reference in a new issue