From 51c0a9fe2ec9605cc3b58fa8079e2229351d7743 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Niklas=20Laxstr=C3=B6m?= <nikerabbit@users.mediawiki.org>
Date: Mon, 7 Jul 2008 19:54:43 +0000
Subject: [PATCH] * Split Compatibility functions to own file

---
 includes/CompatibilityFunctions.php | 76 ++++++++++++++++++++++++++++
 includes/GlobalFunctions.php        | 78 +++--------------------------
 2 files changed, 82 insertions(+), 72 deletions(-)
 create mode 100644 includes/CompatibilityFunctions.php

diff --git a/includes/CompatibilityFunctions.php b/includes/CompatibilityFunctions.php
new file mode 100644
index 0000000000..252a5fb973
--- /dev/null
+++ b/includes/CompatibilityFunctions.php
@@ -0,0 +1,76 @@
+<?php
+
+/**
+ * Compatibility functions
+ *
+ * We more or less support PHP 5.0.x and up.
+ * Re-implementations of newer functions or functions in non-standard
+ * PHP extensions may be included here.
+ */
+if( !function_exists('iconv') ) {
+	# iconv support is not in the default configuration and so may not be present.
+	# Assume will only ever use utf-8 and iso-8859-1.
+	# This will *not* work in all circumstances.
+	function iconv( $from, $to, $string ) {
+		if(strcasecmp( $from, $to ) == 0) return $string;
+		if(strcasecmp( $from, 'utf-8' ) == 0) return utf8_decode( $string );
+		if(strcasecmp( $to, 'utf-8' ) == 0) return utf8_encode( $string );
+		return $string;
+	}
+}
+
+# UTF-8 substr function based on a PHP manual comment
+if ( !function_exists( 'mb_substr' ) ) {
+	function mb_substr( $str, $start ) {
+		$ar = array();
+		preg_match_all( '/./us', $str, $ar );
+
+		if( func_num_args() >= 3 ) {
+			$end = func_get_arg( 2 );
+			return join( '', array_slice( $ar[0], $start, $end ) );
+		} else {
+			return join( '', array_slice( $ar[0], $start ) );
+		}
+	}
+}
+
+if ( !function_exists( 'mb_strlen' ) ) {
+	/**
+	 * Fallback implementation of mb_strlen, hardcoded to UTF-8.
+	 * @param string $str
+	 * @param string $enc optional encoding; ignored
+	 * @return int
+	 */
+	function mb_strlen( $str, $enc="" ) {
+		$counts = count_chars( $str );
+		$total = 0;
+
+		// Count ASCII bytes
+		for( $i = 0; $i < 0x80; $i++ ) {
+			$total += $counts[$i];
+		}
+
+		// Count multibyte sequence heads
+		for( $i = 0xc0; $i < 0xff; $i++ ) {
+			$total += $counts[$i];
+		}
+		return $total;
+	}
+}
+
+if ( !function_exists( 'array_diff_key' ) ) {
+	/**
+	 * Exists in PHP 5.1.0+
+	 * Not quite compatible, two-argument version only
+	 * Null values will cause problems due to this use of isset()
+	 */
+	function array_diff_key( $left, $right ) {
+		$result = $left;
+		foreach ( $left as $key => $unused ) {
+			if ( isset( $right[$key] ) ) {
+				unset( $result[$key] );
+			}
+		}
+		return $result;
+	}
+}
diff --git a/includes/GlobalFunctions.php b/includes/GlobalFunctions.php
index 4e60bd493b..ff6fac0f3b 100644
--- a/includes/GlobalFunctions.php
+++ b/includes/GlobalFunctions.php
@@ -12,78 +12,12 @@ require_once dirname(__FILE__) . '/LogPage.php';
 require_once dirname(__FILE__) . '/normal/UtfNormalUtil.php';
 require_once dirname(__FILE__) . '/XmlFunctions.php';
 
-/**
- * Compatibility functions
- *
- * We more or less support PHP 5.0.x and up.
- * Re-implementations of newer functions or functions in non-standard
- * PHP extensions may be included here.
- */
-if( !function_exists('iconv') ) {
-	# iconv support is not in the default configuration and so may not be present.
-	# Assume will only ever use utf-8 and iso-8859-1.
-	# This will *not* work in all circumstances.
-	function iconv( $from, $to, $string ) {
-		if(strcasecmp( $from, $to ) == 0) return $string;
-		if(strcasecmp( $from, 'utf-8' ) == 0) return utf8_decode( $string );
-		if(strcasecmp( $to, 'utf-8' ) == 0) return utf8_encode( $string );
-		return $string;
-	}
-}
-
-# UTF-8 substr function based on a PHP manual comment
-if ( !function_exists( 'mb_substr' ) ) {
-	function mb_substr( $str, $start ) {
-		$ar = array();
-		preg_match_all( '/./us', $str, $ar );
-
-		if( func_num_args() >= 3 ) {
-			$end = func_get_arg( 2 );
-			return join( '', array_slice( $ar[0], $start, $end ) );
-		} else {
-			return join( '', array_slice( $ar[0], $start ) );
-		}
-	}
-}
-
-if ( !function_exists( 'mb_strlen' ) ) {
-	/**
-	 * Fallback implementation of mb_strlen, hardcoded to UTF-8.
-	 * @param string $str
-	 * @param string $enc optional encoding; ignored
-	 * @return int
-	 */
-	function mb_strlen( $str, $enc="" ) {
-		$counts = count_chars( $str );
-		$total = 0;
-
-		// Count ASCII bytes
-		for( $i = 0; $i < 0x80; $i++ ) {
-			$total += $counts[$i];
-		}
-
-		// Count multibyte sequence heads
-		for( $i = 0xc0; $i < 0xff; $i++ ) {
-			$total += $counts[$i];
-		}
-		return $total;
-	}
-}
-
-if ( !function_exists( 'array_diff_key' ) ) {
-	/**
-	 * Exists in PHP 5.1.0+
-	 * Not quite compatible, two-argument version only
-	 * Null values will cause problems due to this use of isset()
-	 */
-	function array_diff_key( $left, $right ) {
-		$result = $left;
-		foreach ( $left as $key => $unused ) {
-			if ( isset( $right[$key] ) ) {
-				unset( $result[$key] );
-			}
-		}
-		return $result;
+$compatibilityFunctions = array( 'iconv', 'mb_substr', 'mb_strlen', 'array_diff_key' );
+foreach ( $compatibilityFunctions as $function ) {
+	if ( !function_exists($function) ) {
+		wfDebug( "Compatibility functions in use\n" );
+		require_once dirname(__FILE__) . '/CompatibilityFunctions.php';
+		break;
 	}
 }
 
-- 
2.20.1