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Wiki module, copied from contrib/wiki.
I've left out stuff that didn't seem necessary ... including a lot of the Wiki plugins which were quote large... I'm not sure if this is currently working ... I'm about to try it out.
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293
mod/wiki/ewikimoodlelib.php
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293
mod/wiki/ewikimoodlelib.php
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<?php
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/* MySQL database backend
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(Glue between Moodle and ewiki Database)
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Adapted by Michael Schneider
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*/
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/// Glue
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$ewiki_plugins["database"][0] = "ewiki_database_moodle";
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/// #-- predefine some of the configuration constants
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define("EWIKI_NAME", $wiki_entry->pagename);
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define("EWIKI_CONTROL_LINE", 0);
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define("EWIKI_LIST_LIMIT", 25);
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define("EWIKI_DEFAULT_LANG", current_language());
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define("EWIKI_HTML_CHARS", 1);
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define("EWIKI_DB_TABLE_NAME", "wiki_pages");
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function ewiki_database_moodle($action, &$args, $sw1, $sw2) {
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global $wiki, $wiki_entry, $CFG;
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#-- result array
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$r = array();
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switch($action) {
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/* Returns database entry as array for the page whose name was given
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with the "id" key in the $args array, usually fetches the latest
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version of a page, unless a specific "version" was requested in
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the $args array.
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*/
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# Ugly, but we need to choose which wiki we are about to change/read
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case "GET":
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$id = "'" . mysql_escape_string($args["id"]) . "'";
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($version = 0 + @$args["version"]) and ($version = "AND (version=$version)") or ($version="");
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# $result = mysql_query("SELECT * FROM " . EWIKI_DB_TABLE_NAME
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# . " WHERE (pagename=$id) $version ORDER BY version DESC LIMIT 1"
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#);
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#if ($result && ($r = mysql_fetch_array($result, MYSQL_ASSOC))) {
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# $r["id"] = $r["pagename"];
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# unset($r["pagename"]);
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#}
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#if (strlen($r["meta"])) {
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# $r["meta"] = @unserialize($r["meta"]);
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#}
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$select="(pagename=$id) AND wiki=".$wiki_entry->id." $version ";
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$sort="version DESC";
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$result_obj=get_records_select(EWIKI_DB_TABLE_NAME, $select,$sort,"*",0,1);
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if($result_obj) {
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$r=get_object_vars($result_obj[$args["id"]]);
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$r["id"] = $r["pagename"];
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unset($r["pagename"]);
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$r["meta"] = @unserialize($r["meta"]);
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}
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break;
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/* Increases the hit counter for the page name given in $args array
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with "id" index key.
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*/
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case "HIT":
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#mysql_query("UPDATE " . EWIKI_DB_TABLE_NAME . " SET hits=(hits+1) WHERE pagename='" . mysql_escape_string($args["id"]) . "'");
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# set_field does not work because of the "hits+1" construct
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#print "DO ".mysql_escape_string($args["id"]); exit;
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execute_sql("UPDATE " .$CFG->prefix.EWIKI_DB_TABLE_NAME . " SET hits=(hits+1) WHERE pagename='" . mysql_escape_string($args["id"]) . "' and wiki=".$wiki_entry->id, 0);
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break;
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/* Stores the $data array into the database, while not overwriting
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existing entries (using WRITE); returns 0 on failure and 1 if
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saved correctly.
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*/
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case "OVERWRITE":
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$COMMAND = "REPLACE";
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break;
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case "WRITE":
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$COMMAND="WRITE";
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$args["pagename"] = $args["id"];
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unset($args["id"]);
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if (is_array($args["meta"])) {
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$args["meta"] = serialize($args["meta"]);
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}
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#$sql1 = $sql2 = "";
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#foreach ($args as $index => $value) {
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# if (is_int($index)) {
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# continue;
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# }
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# $a = ($sql1 ? ', ' : '');
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# $sql1 .= $a . $index;
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# $sql2 .= $a . "'" . mysql_escape_string($value) . "'";
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#}
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#strlen(@$COMMAND) || ($COMMAND = "INSERT");
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foreach ($args as $index => $value) {
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if (is_int($index)) {
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continue;
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}
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$args[$index] =mysql_escape_string($value);
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}
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$args["wiki"]=$wiki_entry->id;
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# Check if Record exists
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if($COMMAND=="REPLACE") {
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if(count_records(EWIKI_DB_TABLE_NAME,"wiki", $wiki_entry->id,"pagename",$args["pagename"],"version",$args["version"])) {
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delete_record(EWIKI_DB_TABLE_NAME,"wiki", $wiki_entry->id,"pagename",$args["pagename"],"version",$args["version"]);
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}
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}
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# Write
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$result=insert_record(EWIKI_DB_TABLE_NAME,$args,false,"pagename");
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#$result = mysql_query("$COMMAND INTO " . EWIKI_DB_TABLE_NAME .
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# " (" . $sql1 . ") VALUES (" . $sql2 . ")"
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#);
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#return($result && mysql_affected_rows() ?1:0);
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return $result;
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break;
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/* Checks for existence of the WikiPages whose names are given in
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the $args array. Returns an array with the specified WikiPageNames
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associated with values of "0" or "1" (stating if the page exists
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in the database). For images/binary db entries returns the "meta"
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field instead of an "1".
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*/
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case "FIND":
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$select = "";
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foreach (array_values($args) as $id) {
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if (strlen($id)) {
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$r[$id] = 0;
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$select .= ($select ? " OR " : "") .
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"(pagename='" . mysql_escape_string($id) . "')";
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}
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}
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if($select) {
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$select = "(".$select.") AND wiki=".$wiki_entry->id;
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$result = get_records_select(EWIKI_DB_TABLE_NAME,$select);
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#$sql = "SELECT pagename AS id, meta FROM " .
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# EWIKI_DB_TABLE_NAME . " WHERE $sql "
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#);
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#while ($result && ($row = mysql_fetch_row($result))) {
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# $r[$row[0]] = strpos($row[1], 's:5:"image"') ? $row[1] : 1;
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while(list($key, $val) = @each($result)) {
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$r[$val->pagename]=strpos($val->meta, 's:5:"image"') ? $val->meta : 1;
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}
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}
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break;
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/* Counts the number of Versions
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*/
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case "COUNTVERSIONS":
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$sql= "SELECT pagename AS id, count(*) as versioncount".
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" FROM ". $CFG->prefix.EWIKI_DB_TABLE_NAME .
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" WHERE wiki = ".$wiki_entry->id.
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" GROUP BY id";
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#print "$sql";
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$result=get_records_sql($sql);
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while(list($key, $val) = each($result)) {
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$r[$key]=$val->versioncount;
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}
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break;
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/* Returns an array of __all__ pages, where each entry is made up
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of the fields from the database requested with the $args array,
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e.g. array("flags","meta","lastmodified");
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*/
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case "GETALL":
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#$result = mysql_query("SELECT pagename AS id, ".
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# implode(", ", $args) .
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# " FROM ". EWIKI_DB_TABLE_NAME .
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# " GROUP BY id, version DESC"
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#);
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$sql= "SELECT pagename AS id, ".
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implode(", ", $args) .
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" FROM ". $CFG->prefix.EWIKI_DB_TABLE_NAME .
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" WHERE wiki = ".$wiki_entry->id.
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" GROUP BY id, version";
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#print "$sql";
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$result=get_records_sql($sql);
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$r = new ewiki_dbquery_result($args);
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$drop = "";
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#while ($result && ($row = mysql_fetch_array($result, MYSQL_ASSOC))) {
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# $i = EWIKI_CASE_INSENSITIVE ? strtolower($row["id"]) : $row["id"];
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# if ($i != $drop) {
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# $drop = $i;
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# $r->add($row);
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# }
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#}
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#print "<pre>"; print_r($result); print "</pre>";
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while(list($key, $val) = each($result)) {
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$row=get_object_vars($val);
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$i = EWIKI_CASE_INSENSITIVE ? strtolower($row["id"]) : $row["id"];
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if ($i != $drop) {
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$drop = $i;
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$r->add($row);
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}
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}
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break;
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/* Returns array of database entries (also arrays), where the one
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specified column matches the specified content string, for example
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$args = array("content" => "text...piece")
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is not guaranteed to only search/return the latest version of a page
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*/
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case "SEARCH":
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$field = implode("", array_keys($args));
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$content = strtolower(implode("", $args));
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if ($field == "id") { $field = "pagename"; }
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#$result = mysql_query("SELECT pagename AS id, version, flags" .
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# (EWIKI_DBQUERY_BUFFER && ($field!="pagename") ? ", $field" : "") .
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# " FROM " . EWIKI_DB_TABLE_NAME .
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# " WHERE LOCATE('" . mysql_escape_string($content) . "', LCASE($field)) " .
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# " GROUP BY id, version DESC"
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#);
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$sql= "SELECT pagename AS id, version, flags" .
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(EWIKI_DBQUERY_BUFFER && ($field!="pagename") ? ", $field" : "") .
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" FROM " . $CFG->prefix.EWIKI_DB_TABLE_NAME .
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" WHERE LOCATE('" . mysql_escape_string($content) . "', LCASE($field)) and wiki=".$wiki_entry->id .
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" GROUP BY id, version DESC";
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$result=get_records_sql($sql);
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$r = new ewiki_dbquery_result(array("id","version",$field));
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$drop = "";
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#while ($result && ($row = mysql_fetch_array($result, MYSQL_ASSOC))) {
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# $i = EWIKI_CASE_INSENSITIVE ? strtolower($row["id"]) : $row["id"];
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# if ($i != $drop) {
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# $drop = $i;
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# $r->add($row);
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# }
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#}
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while(list($key, $val) = @each($result)) {
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$row=get_object_vars($val);
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$i = EWIKI_CASE_INSENSITIVE ? strtolower($row["id"]) : $row["id"];
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if ($i != $drop) {
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$drop = $i;
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$r->add($row);
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}
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}
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break;
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case "DELETE":
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$id = mysql_escape_string($args["id"]);
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$version = $args["version"];
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#mysql_query("DELETE FROM " . EWIKI_DB_TABLE_NAME ."
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# WHERE pagename='$id' AND version=$version");
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# print "DELETING wiki:".$wiki_entry->id."Pagename: $id Version: $version <br>\n";
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delete_records(EWIKI_DB_TABLE_NAME,"wiki", $wiki_entry->id,"pagename",$id,"version",$version);
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break;
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case "INIT":
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#mysql_query("CREATE TABLE " . EWIKI_DB_TABLE_NAME ."
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# (pagename VARCHAR(160) NOT NULL,
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# version INTEGER UNSIGNED NOT NULL DEFAULT 0,
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# flags INTEGER UNSIGNED DEFAULT 0,
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# content MEDIUMTEXT,
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# author VARCHAR(100) DEFAULT 'ewiki',
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# created INTEGER UNSIGNED DEFAULT ".time().",
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# lastmodified INTEGER UNSIGNED DEFAULT 0,
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# refs MEDIUMTEXT,
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# meta MEDIUMTEXT,
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# hits INTEGER UNSIGNED DEFAULT 0,
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# PRIMARY KEY id (pagename, version) )
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# ");
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#echo mysql_error();
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break;
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default:
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}
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return($r);
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}
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