add compatibility with ekliptor/qr-code

include/barcodes/qrcode.php

@@ -104,7 +104,7 @@
 	/**
 	 * Encoding mode alphanumeric (0-9A-Z $%*+-./:) 45characters. 2 characters are encoded to 11bit length. In theory, 4296 characters or less can be stored in a QRcode.
 	 */
-	define('QR_MODE_AN', 1);
+	defined('QR_MODE_AN') ?: define('QR_MODE_AN', 1);
 
 	/**
 	 * Encoding mode 8bit byte data. In theory, 2953 characters or less can be stored in a QRcode.
@@ -130,22 +130,22 @@
 	/**
 	 * Error correction level L : About 7% or less errors can be corrected.
 	 */
-	define('QR_ECLEVEL_L', 0);
+	defined('QR_ECLEVEL_L') ?: define('QR_ECLEVEL_L', 0);
 
 	/**
 	 * Error correction level M : About 15% or less errors can be corrected.
 	 */
-	define('QR_ECLEVEL_M', 1);
+	defined('QR_ECLEVEL_M') ?: define('QR_ECLEVEL_M', 1);
 
 	/**
 	 * Error correction level Q : About 25% or less errors can be corrected.
 	 */
-	define('QR_ECLEVEL_Q', 2);
+	defined('QR_ECLEVEL_Q') ?: define('QR_ECLEVEL_Q', 2);
 
 	/**
 	 * Error correction level H : About 30% or less errors can be corrected.
 	 */
-	define('QR_ECLEVEL_H', 3);
+	defined('QR_ECLEVEL_H') ?: define('QR_ECLEVEL_H', 3);
 
 	// -----------------------------------------------------
 
@@ -157,34 +157,34 @@
 	/**
 	 * Maximum QR Code version.
 	 */
-	define('QRSPEC_VERSION_MAX', 40);
+	defined('QRSPEC_VERSION_MAX') ?: define('QRSPEC_VERSION_MAX', 40);
 
 	/**
 	 * Maximum matrix size for maximum version (version 40 is 177*177 matrix).
 	 */
-    define('QRSPEC_WIDTH_MAX', 177);
+    defined('QRSPEC_WIDTH_MAX') ?: define('QRSPEC_WIDTH_MAX', 177);
 
 	// -----------------------------------------------------
 
 	/**
 	 * Matrix index to get width from $capacity array.
 	 */
-    define('QRCAP_WIDTH',    0);
+    defined('QRCAP_WIDTH') ?: define('QRCAP_WIDTH',    0);
 
     /**
 	 * Matrix index to get number of words from $capacity array.
 	 */
-    define('QRCAP_WORDS',    1);
+    defined('QRCAP_WORDS') ?: define('QRCAP_WORDS',    1);
 
     /**
 	 * Matrix index to get remainder from $capacity array.
 	 */
-    define('QRCAP_REMINDER', 2);
+    defined('QRCAP_REMINDER') ?: define('QRCAP_REMINDER', 2);
 
     /**
 	 * Matrix index to get error correction level from $capacity array.
 	 */
-    define('QRCAP_EC',       3);
+    defined('QRCAP_EC') ?: define('QRCAP_EC',       3);
 
 	// -----------------------------------------------------
 
@@ -193,12 +193,12 @@
 	/**
 	 * Number of header bits for structured mode
 	 */
-    define('STRUCTURE_HEADER_BITS',  20);
+    defined('STRUCTURE_HEADER_BITS') ?: define('STRUCTURE_HEADER_BITS',  20);
 
     /**
 	 * Max number of symbols for structured mode
 	 */
-    define('MAX_STRUCTURED_SYMBOLS', 16);
+    defined('MAX_STRUCTURED_SYMBOLS') ?: define('MAX_STRUCTURED_SYMBOLS', 16);
 
 	// -----------------------------------------------------
 
@@ -207,22 +207,22 @@
     /**
 	 * Down point base value for case 1 mask pattern (concatenation of same color in a line or a column)
 	 */
-    define('N1',  3);
+    defined('N1') ?: define('N1',  3);
 
     /**
 	 * Down point base value for case 2 mask pattern (module block of same color)
 	 */
-	define('N2',  3);
+	defined('N2') ?: define('N2',  3);
 
     /**
 	 * Down point base value for case 3 mask pattern (1:1:3:1:1(dark:bright:dark:bright:dark)pattern in a line or a column)
 	 */
-	define('N3', 40);
+	defined('N3') ?: define('N3', 40);
 
     /**
 	 * Down point base value for case 4 mask pattern (ration of dark modules in whole)
 	 */
-	define('N4', 10);
+	defined('N4') ?: define('N4', 10);
 
 	// -----------------------------------------------------
 
@@ -231,17 +231,17 @@
 	/**
 	 * if true, estimates best mask (spec. default, but extremally slow; set to false to significant performance boost but (propably) worst quality code
 	 */
-	define('QR_FIND_BEST_MASK', true);
+	defined('QR_FIND_BEST_MASK') ?: define('QR_FIND_BEST_MASK', true);
 
 	/**
 	 * if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly
 	 */
-	define('QR_FIND_FROM_RANDOM', 2);
+	defined('QR_FIND_FROM_RANDOM') ?: define('QR_FIND_FROM_RANDOM', 2);
 
 	/**
 	 * when QR_FIND_BEST_MASK === false
 	 */
-	define('QR_DEFAULT_MASK', 2);
+	defined('QR_DEFAULT_MASK') ?: define('QR_DEFAULT_MASK', 2);
 
 	// -----------------------------------------------------