removed mods directory from the ATutor codebase

[atutor.git] / mods / wiki / plugins / lib / opensearch.php

diff --git a/mods/wiki/plugins/lib/opensearch.php b/mods/wiki/plugins/lib/opensearch.php
deleted file mode 100644 (file)
index 16d3b83..0000000
--- a/mods/wiki/plugins/lib/opensearch.php
+++ /dev/null
@@ -1,194 +0,0 @@
-<?php
-#
-#  OpenSearch backend for ErfurtWiki with MySQL database, but should also
-#  work for PhpWiki 1.2 installs (but you need to glue it yourself then).
-#
-
-
-#-- plugin registration
-$wikiapi["wiki.search"] = "ewiki_opensearch_api";
-
-
-#-- the interface
-function ewiki_opensearch_api($query, $params) {
-
-   #-- database connection
-   // should already be established
-   
-   #-- check request params
-   $params = (array)$params
-   + array(
-      "n_hit" => 1000,
-      "m_title" => 3.0,
-      "q_pos" => 2.0,
-      "q_not" => 0.0,
-      "limit" => 5000,
-   );
-   $n_hit = $params["n_hit"];
-   $q_pos = $params["q_pos"];
-   $q_not = $params["q_not"];
-   $calc = array();
-
-   #-- search target field mapped to internal SQL row names
-   $fieldnames = array(
-      "title" => "title",
-      "text" => "text",
-      "" => "content",
-      "author" => "author",
-      "links" => "links",
-      "meta" => "meta",
-      "filename" => "title",
-   );
-
-   
-   #-- sort request terms into MUST and NOT ------------------------ SQL ---
-   $sql = array(
-     "MUST" => array(),
-     "NOT" => array(),
-   );
-   foreach ($query as $i=>$qterm) {
-      list($pattern, $dep, $field, $flags) = $qterm;
-      $f_regex = strpos($flags, "REGEX") !== false;
-      $f_nocase = strpos($flags, "NOCASE") !== false;
-      $m_field = isset($params["m_$field"]) ? $params["m_$field"] : 0;
-      
-      if ($field = $fieldnames[$field]) {
-
-         $pattern = mysql_escape_string($pattern);
-
-         if ($f_regex) {
-            $s = "$field REGEXP '$pattern'";
-         }
-         elseif ($f_nocase) {
-            $pattern = strtolower($pattern);
-            $s = "LOCATE('$pattern', LCASE($field)) > 0";
-         }
-         else {
-            $s = "LOCATE('$pattern', $field) > 0";
-         }
-
-         #-- add
-         $sql[$dep][] = "($s)";
-      }
-
-      $calc[] = array($pattern, $dep, $field, $f_regex, $f_nocase, $m_field);
-
-   }
-   if ($q_not) {
-      $sql_MUST = implode(" OR ", $sql["MUST"]);
-      $sql_NOT = "";
-   }
-   else {
-      $sql_MUST = implode(" AND ", $sql["MUST"]);
-      $sql_NOT = implode(" OR ", $sql["NOT"]);
-      if ($sql_NOT) { $sql_NOT = " AND NOT ($sql_NOT)"; }
-   }
-
-   #-- last validity checks
-   if (!$sql_MUST) {
-      // no way to send an error with ED xmlrpclib ?
-      return("551: at least one MUST search term must be given");
-   }
-   
-
-   #-- get hit list
-   $sql_DB_F_TEXT = "((flags & 1) > 0) AND";
-   $sql_query_result = mysql_query($sql="
-      SELECT
-         pagename AS id, version AS version,
-         pagename AS title,
-         content AS text,
-         CONCAT(pagename, content) AS content,
-         meta,
-         author,
-         refs AS links,
-         lastmodified,
-         created,
-         flags
-      FROM
-         ewiki
-      WHERE
-         $sql_DB_F_TEXT
-         $sql_MUST
-         $sql_NOT
-      GROUP BY id ORDER BY version
-   ");
-
-   #-- start hit score calculation ---------------------------------- CALC ---
-   $result_list = array();
-   $ordered_list = array();
-   if ($sql_query_result) while ($row = mysql_fetch_array($sql_query_result)) {
-
-      $score = 0.0;   // final score
-      $m_fin = 1.0;   // to eventually decrease it later
-
-      #-- score each search term for hit
-      foreach ($calc as $qterm) {
-         list($pattern, $dep, $field, $f_regex, $f_nocase, $m_field) = $qterm;
-         
-         #-- minscore
-         $add = $n_hit;
-         if ($m_field) {
-            $add *= $m_field;
-         }
-         
-         #-- regex hit
-         if ($f_regex) {
-            $ok = preg_match($pattern, $row["field"]);
-            if ($dep=="MUST") {
-               $score += $add * ($ok ? 1.0 : $q_not);
-            }
-            elseif ($dep=="NOT") {
-               if ($ok) {
-                  $m_fin *= $q_not;
-               }
-            }
-         }
-         #-- strsearch hit
-         else {
-            $text = $f_nocase ? strtolower($row[$field]) : $row[$field];
-            $len = strlen($text) + 1;
-
-            #-- add points for each hit, weighted by match position
-            if ($dep=="MUST") {
-               $p = -1;
-               while (false !== ($p = strpos($text, $pattern, $p+1))) {
-                  $score += $add * ($q_pos - ($q_pos - 1) * ($p / $len));
-               }
-            }
-            #-- NOT search term
-            elseif (strpos($text, $pattern) !== false) {
-               $m_fin *= $q_not;
-            }
-         }
-         
-      }
-      
-      #-- add to list
-      if ($score *= $m_fin) {
-         $result_list[] = array(
-            "title" => $row["title"],
-            "url" => ewiki_script_url("", $row["title"]),
-            "excerpt" => substr(strtr($row["text"], "\r\n\t\f", "    "), 0, 300),
-            "score" => $score,
-            "lastmodified" => $row["lastmodified"],
-         );
-         $ordered_list[] = $score;
-      }
-   }
-   
-   #-- sort result?
-   arsort($ordered_list);
-   foreach ($ordered_list as $i=>$uu) {
-      $ordered_list[$i] = $result_list[$i];
-      unset($result_list[$i]);
-   }
-   $result_list = & $ordered_list;
-
-
-   #-- done
-   return($ordered_list);
-}
-
-
-?>
\ No newline at end of file