From 2aa2b332f6e216ceeabc36ef6b942c40d91bda5a Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Wed, 08 Sep 2010 05:40:39 -0400
Subject: [PATCH] - Small performance improvements

---
 program/include/rcube_imap_generic.php |  102 +++++++++++++++++++++++----------------------------
 1 files changed, 46 insertions(+), 56 deletions(-)

diff --git a/program/include/rcube_imap_generic.php b/program/include/rcube_imap_generic.php
index d5a5e3d..0c69c23 100644
--- a/program/include/rcube_imap_generic.php
+++ b/program/include/rcube_imap_generic.php
@@ -191,7 +191,7 @@
         		break;
     		}
 		    if (!empty($this->prefs['debug_mode'])) {
-			    write_log('imap', 'S: '. chop($buffer));
+			    write_log('imap', 'S: '. rtrim($buffer));
     		}
             $line .= $buffer;
 	    } while ($buffer[strlen($buffer)-1] != "\n");
@@ -201,7 +201,7 @@
 
     private function multLine($line, $escape=false)
     {
-	    $line = chop($line);
+	    $line = rtrim($line);
 	    if (preg_match('/\{[0-9]+\}$/', $line)) {
 		    $out = '';
 
@@ -645,7 +645,6 @@
 	    // RFC3501 [7.1] optional CAPABILITY response
 	    if (preg_match('/\[CAPABILITY ([^]]+)\]/i', $line, $matches)) {
 		    $this->capability = explode(' ', strtoupper($matches[1]));
-		    $this->capability_readed = true;
 	    }
 
 	    $this->message .= $line;
@@ -750,31 +749,24 @@
 
 	    if ($this->putLine("sel1 SELECT \"".$this->escape($mailbox).'"')) {
 		    do {
-			    $line = chop($this->readLine(300));
-			    $a = explode(' ', $line);
-			    if (count($a) == 3) {
-				    $token = strtoupper($a[2]);
-				    if ($token == 'EXISTS') {
-					    $this->exists = (int) $a[1];
-				    }
-				    else if ($token == 'RECENT') {
-					    $this->recent = (int) $a[1];
-				    }
+			    $line = rtrim($this->readLine(512));
+
+			    if (preg_match('/^\* ([0-9]+) (EXISTS|RECENT)$/', $line, $m)) {
+			        $token = strtolower($m[2]);
+			        $this->$token = (int) $m[1];
 			    }
 			    else if (preg_match('/\[?PERMANENTFLAGS\s+\(([^\)]+)\)\]/U', $line, $match)) {
 				    $this->permanentflags = explode(' ', $match[1]);
 			    }
 		    } while (!$this->startsWith($line, 'sel1', true, true));
 
-		    if (strcasecmp($a[1], 'OK') == 0) {
+            if ($this->parseResult($line) == 0) {
 			    $this->selected = $mailbox;
 			    return true;
 		    }
-            else {
-                $this->error = "Couldn't select $mailbox";
-            }
 	    }
 
+        $this->error = "Couldn't select $mailbox";
         return false;
     }
 
@@ -841,7 +833,7 @@
 	        return false;
 	    }
 	    do {
-		    $line = chop($this->readLine());
+		    $line = rtrim($this->readLine());
 		    if ($this->startsWith($line, '* SORT')) {
 			    $data .= substr($line, 7);
     		} else if (preg_match('/^[0-9 ]+$/', $line)) {
@@ -925,7 +917,7 @@
 	    $result = array();
 
 	    do {
-		    $line = chop($this->readLine(200));
+		    $line = rtrim($this->readLine(200));
 		    $line = $this->multLine($line);
 
 		    if (preg_match('/^\* ([0-9]+) FETCH/', $line, $m)) {
@@ -1054,7 +1046,7 @@
 	    $result = -1;
 		if ($this->putLine("fuid FETCH $id (UID)")) {
 		    do {
-			    $line = chop($this->readLine(1024));
+			    $line = rtrim($this->readLine(1024));
 				if (preg_match("/^\* $id FETCH \(UID (.*)\)/i", $line, $r)) {
 					$result = $r[1];
 				}
@@ -1112,10 +1104,8 @@
             if (!$line)
                 break;
 
-		    $a    = explode(' ', $line);
-
-		    if (($line[0] == '*') && ($a[2] == 'FETCH')) {
-			    $id = $a[1];
+		    if (preg_match('/^\* ([0-9]+) FETCH/', $line, $m)) {
+			    $id = $m[1];
 
 			    $result[$id]            = new rcube_mail_header;
 			    $result[$id]->id        = $id;
@@ -1189,7 +1179,7 @@
 				// to the next valid header line.
 
 			    do {
-				    $line = chop($this->readLine(300), "\r\n");
+				    $line = rtrim($this->readLine(300), "\r\n");
 
     				// The preg_match below works around communigate imap, which outputs " UID <number>)".
 	    			// Without this, the while statement continues on and gets the "FH0 OK completed" message.
@@ -1268,7 +1258,7 @@
 					    	}
         					break;
 					    case 'in-reply-to':
-			    			$result[$id]->in_reply_to = preg_replace('/[\n<>]/', '', $string);
+			    			$result[$id]->in_reply_to = str_replace(array("\n", '<', '>'), '', $string);
 				    		break;
     					case 'references':
 	    					$result[$id]->references = $string;
@@ -1291,8 +1281,6 @@
 						    break;
     					} // end switch ()
 	    			} // end while ()
-		    	} else {
-			    	$a = explode(' ', $line);
 			    }
 
     			// process flags
@@ -1301,7 +1289,6 @@
 			    	$flags_a   = explode(' ', $flags_str);
 
 				    if (is_array($flags_a)) {
-    				//	reset($flags_a);
 	    				foreach($flags_a as $flag) {
 		    				$flag = strtoupper($flag);
 			    			if ($flag == 'SEEN') {
@@ -1452,7 +1439,7 @@
         }
 
 	    do {
-		    $line = $this->readLine(1000);
+		    $line = $this->readLine();
 		    if ($line[0] == '*') {
 		        $c++;
             }
@@ -1608,7 +1595,7 @@
 	    }
 
     	$data = '';
-	    $query = 'srch1 ' . ($return_uid ? 'UID ' : '') . 'SEARCH ' . chop($criteria);
+	    $query = 'srch1 ' . ($return_uid ? 'UID ' : '') . 'SEARCH ' . trim($criteria);
 
 	    if (!$this->putLineC($query)) {
 		    return false;
@@ -1675,8 +1662,11 @@
             $command = 'LIST';
         }
 
+        $ref = $this->escape($ref);
+        $mailbox = $this->escape($mailbox);
+
     	// send command
-	    if (!$this->putLine($key." ".$command." \"". $this->escape($ref) ."\" \"". $this->escape($mailbox) ."\"")) {
+	    if (!$this->putLine($key." ".$command." \"". $ref ."\" \"". $mailbox ."\"")) {
 		    $this->error = "Couldn't send $command command";
 	        return false;
 	    }
@@ -1685,16 +1675,15 @@
 	    do {
 		    $line = $this->readLine(500);
 		    $line = $this->multLine($line, true);
-		    $a    = explode(' ', $line);
+		    $line = trim($line);
 
-		    if (($line[0] == '*') && ($a[1] == $command)) {
-			    $line = rtrim($line);
-        		// split one line
-			    $a = rcube_explode_quoted_string(' ', $line);
-        		// last string is folder name
-			    $folders[] = preg_replace(array('/^"/', '/"$/'), '', $this->unEscape($a[count($a)-1]));
-		        // second from last is delimiter
-        		$delim = trim($a[count($a)-2], '"');
+		    if (preg_match('/^\* '.$command.' \(([^\)]*)\) "*([^"]+)"* (.*)$/', $line, $m)) {
+        		// folder name
+   			    $folders[] = preg_replace(array('/^"/', '/"$/'), '', $this->unEscape($m[3]));
+		        // attributes
+//        		$attrib = explode(' ', $m[1]);
+		        // delimiter
+//        		$delim = $m[2];
 		    }
 	    } while (!$this->startsWith($line, $key, true));
 
@@ -1733,7 +1722,7 @@
 	    }
 
 	    do {
-        	$line = $this->readLine(1000);
+        	$line = $this->readLine(1024);
         	$line = $this->multLine($line);
 
 		    if (preg_match('/BODY\[([0-9\.]+)\.'.$type.'\]/', $line, $matches)) {
@@ -1777,12 +1766,11 @@
 		    	$mode = 0;
 	    }
 
-   		$reply_key = '* ' . $id;
-    	$result = false;
-
     	// format request
-		$key     = 'ftch0';
-		$request = $key . ($is_uid ? ' UID' : '') . " FETCH $id (BODY.PEEK[$part])";
+   		$reply_key = '* ' . $id;
+		$key       = 'ftch0';
+		$request   = $key . ($is_uid ? ' UID' : '') . " FETCH $id (BODY.PEEK[$part])";
+
     	// send request
 		if (!$this->putLine($request)) {
 		    return false;
@@ -1790,11 +1778,12 @@
 
    		// receive reply line
    		do {
-       		$line = chop($this->readLine(1000));
+       		$line = rtrim($this->readLine(1024));
        		$a    = explode(' ', $line);
    		} while (!($end = $this->startsWith($line, $key, true)) && $a[2] != 'FETCH');
 
-   		$len = strlen($line);
+   		$len    = strlen($line);
+    	$result = false;
 
 		// handle empty "* X FETCH ()" response
     	if ($line[$len-1] == ')' && $line[$len-2] != '(') {
@@ -1890,7 +1879,7 @@
         			$line = $this->readLine(1024);
 			} while (!$this->startsWith($line, $key, true));
 
-   		if ($result) {
+   		if ($result !== false) {
 	    	if ($file) {
 		    	fwrite($file, $result);
    			} else if ($print) {
@@ -2007,7 +1996,7 @@
 	    return false;
     }
 
-    function appendFromFile($folder, $path, $headers=null, $separator="\n\n")
+    function appendFromFile($folder, $path, $headers=null)
     {
 	    if (!$folder) {
 	        return false;
@@ -2023,14 +2012,16 @@
 		    return false;
 	    }
 
+        $body_separator = "\r\n\r\n";
 	    $len = filesize($path);
+
 	    if (!$len) {
 		    return false;
 	    }
 
         if ($headers) {
             $headers = preg_replace('/[\r\n]+$/', '', $headers);
-            $len += strlen($headers) + strlen($separator);
+            $len += strlen($headers) + strlen($body_separator);
         }
 
     	// send APPEND command
@@ -2046,7 +2037,7 @@
 
             // send headers with body separator
             if ($headers) {
-			    $this->putLine($headers . $separator, false);
+			    $this->putLine($headers . $body_separator, false);
             }
 
 		    // send file
@@ -2114,7 +2105,7 @@
 	    // get line(s) containing quota info
 	    if ($this->putLine('QUOT1 GETQUOTAROOT "INBOX"')) {
 		    do {
-			    $line = chop($this->readLine(5000));
+			    $line = rtrim($this->readLine(5000));
 			    if ($this->startsWith($line, '* QUOTA ')) {
 				    $quota_lines[] = $line;
         		}
@@ -2124,7 +2115,7 @@
 	    // return false if not found, parse if found
 	    $min_free = PHP_INT_MAX;
 	    foreach ($quota_lines as $key => $quota_line) {
-		    $quota_line   = preg_replace('/[()]/', '', $quota_line);
+		    $quota_line   = str_replace(array('(', ')'), '', $quota_line);
 		    $parts        = explode(' ', $quota_line);
 		    $storage_part = array_search('STORAGE', $parts);
 
@@ -2237,4 +2228,3 @@
 
 }
 
-?>

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