From 7ffdc10bef06624ca2c6cf58e1109f880bbbf13e Mon Sep 17 00:00:00 2001
From: =?utf8?q?Roland=20H=C3=A4der?= <roland@mxchange.org>
Date: Sun, 12 Dec 2021 00:18:41 +0100
Subject: [PATCH] Continued: - StringUtils::convertToClassName() is now
 "in-method cached". That means that   the parameter $str is used as key and
 the value is being generated when the   key does not exist in self::$cache
 array
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Signed-off-by: Roland Häder <roland@mxchange.org>
---
 .../utils/strings/class_StringUtils.php       | 39 ++++++++++++-------
 1 file changed, 25 insertions(+), 14 deletions(-)

diff --git a/framework/main/classes/utils/strings/class_StringUtils.php b/framework/main/classes/utils/strings/class_StringUtils.php
index 947a657a..257d325d 100644
--- a/framework/main/classes/utils/strings/class_StringUtils.php
+++ b/framework/main/classes/utils/strings/class_StringUtils.php
@@ -44,6 +44,11 @@ final class StringUtils extends BaseFrameworkSystem {
 	 */
 	private static $decimals  = ''; // German
 
+	/**
+	 * In-method cache array
+	 */
+	private static $cache = [];
+
 	/**
 	 * Array with bitmasks and such for pack/unpack methods to support both
 	 * 32-bit and 64-bit systems
@@ -190,30 +195,36 @@ final class StringUtils extends BaseFrameworkSystem {
 	 *
 	 * @param	$str		The string, what ever it is needs to be converted
 	 * @return	$className	Generated class name
+	 * @throws	InvalidArgumentException	If a paramter is invalid
 	 */
 	public static final function convertToClassName (string $str) {
 		// Is the parameter valid?
-		/* NOISY-DEBUG */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('STRING-UTILS: str=%s - CALLED!', $str));
+		//* NOISY-DEBUG */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('STRING-UTILS: str=%s - CALLED!', $str));
 		if (empty($str)) {
 			// No empty strings, please
 			throw new InvalidArgumentException('Parameter "str" is empty', self::EXCEPTION_CONFIG_KEY_IS_EMPTY);
-		}
-
-		// Init class name
-		$className = '';
-
-		// Convert all dashes in underscores
-		$str = self::convertDashesToUnderscores($str);
+		} elseif (!isset(self::$cache[$str])) {
+			// Init class name
+			$className = '';
+
+			// Convert all dashes in underscores
+			$str = self::convertDashesToUnderscores($str);
+
+			// Now use that underscores to get classname parts for hungarian style
+			//* NOISY-DEBUG */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('STRING-UTILS: str=%s - AFTER!', $str));
+			foreach (explode('_', $str) as $strPart) {
+				// Make the class name part lower case and first upper case
+				$className .= ucfirst(strtolower($strPart));
+			}
 
-		// Now use that underscores to get classname parts for hungarian style
-		foreach (explode('_', $str) as $strPart) {
-			// Make the class name part lower case and first upper case
-			$className .= ucfirst(strtolower($strPart));
+			// Set cache
+			//* NOISY-DEBUG */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('STRING-UTILS: self[%s]=%s - SET!', $str, $className));
+			self::$cache[$str] = $className;
 		}
 
 		// Return class name
-		/* NOISY-DEBUG */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('STRING-UTILS: className=%s - EXIT!', $className));
-		return $className;
+		//* NOISY-DEBUG */ self::createDebugInstance(__CLASS__, __LINE__)->debugOutput(sprintf('STRING-UTILS: self[%s]=%s - EXIT!', $str, $className));
+		return self::$cache[$str];
 	}
 
 	/**
-- 
2.39.5