From ca32f08966f1b51fcb19460f0996bb0c4048e6fe Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Sat, 3 Dec 2011 13:29:22 +0100
Subject: Update to MediaWiki 1.18.0

* also update ArchLinux skin to chagnes in MonoBook
* Use only css to hide our menu bar when printing
---
 includes/Fallback.php | 200 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 200 insertions(+)
 create mode 100644 includes/Fallback.php

(limited to 'includes/Fallback.php')

diff --git a/includes/Fallback.php b/includes/Fallback.php
new file mode 100644
index 00000000..2cca1e81
--- /dev/null
+++ b/includes/Fallback.php
@@ -0,0 +1,200 @@
+<?php
+
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ */
+
+/**
+ * Fallback functions for PHP installed without mbstring support
+ */
+class Fallback {
+	
+	public static function iconv( $from, $to, $string ) {
+		if ( substr( $to, -8 ) == '//IGNORE' ) {
+			$to = substr( $to, 0, strlen( $to ) - 8 );
+		}
+		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;
+	}
+
+	/**
+	 * Fallback implementation for mb_substr, hardcoded to UTF-8.
+	 * Attempts to be at least _moderately_ efficient; best optimized
+	 * for relatively small offset and count values -- about 5x slower
+	 * than native mb_string in my testing.
+	 *
+	 * Larger offsets are still fairly efficient for Latin text, but
+	 * can be up to 100x slower than native if the text is heavily
+	 * multibyte and we have to slog through a few hundred kb.
+	 * 
+	 * @param $str
+	 * @param $start
+	 * @param $count string
+	 *
+	 * @return string
+	 */
+	public static function mb_substr( $str, $start, $count = 'end' ) {
+		if( $start != 0 ) {
+			$split = self::mb_substr_split_unicode( $str, intval( $start ) );
+			$str = substr( $str, $split );
+		}
+	
+		if( $count !== 'end' ) {
+			$split = self::mb_substr_split_unicode( $str, intval( $count ) );
+			$str = substr( $str, 0, $split );
+		}
+	
+		return $str;
+	}
+	
+	public static function mb_substr_split_unicode( $str, $splitPos ) {
+		if( $splitPos == 0 ) {
+			return 0;
+		}
+	
+		$byteLen = strlen( $str );
+	
+		if( $splitPos > 0 ) {
+			if( $splitPos > 256 ) {
+				// Optimize large string offsets by skipping ahead N bytes.
+				// This will cut out most of our slow time on Latin-based text,
+				// and 1/2 to 1/3 on East European and Asian scripts.
+				$bytePos = $splitPos;
+				while ( $bytePos < $byteLen && $str[$bytePos] >= "\x80" && $str[$bytePos] < "\xc0" ) {
+					++$bytePos;
+				}
+				$charPos = mb_strlen( substr( $str, 0, $bytePos ) );
+			} else {
+				$charPos = 0;
+				$bytePos = 0;
+			}
+	
+			while( $charPos++ < $splitPos ) {
+				++$bytePos;
+				// Move past any tail bytes
+				while ( $bytePos < $byteLen && $str[$bytePos] >= "\x80" && $str[$bytePos] < "\xc0" ) {
+					++$bytePos;
+				}
+			}
+		} else {
+			$splitPosX = $splitPos + 1;
+			$charPos = 0; // relative to end of string; we don't care about the actual char position here
+			$bytePos = $byteLen;
+			while( $bytePos > 0 && $charPos-- >= $splitPosX ) {
+				--$bytePos;
+				// Move past any tail bytes
+				while ( $bytePos > 0 && $str[$bytePos] >= "\x80" && $str[$bytePos] < "\xc0" ) {
+					--$bytePos;
+				}
+			}
+		}
+	
+		return $bytePos;
+	}
+	
+	/**
+	 * Fallback implementation of mb_strlen, hardcoded to UTF-8.
+	 * @param string $str
+	 * @param string $enc optional encoding; ignored
+	 * @return int
+	 */
+	public static 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;
+	}
+	
+	
+	/**
+	 * Fallback implementation of mb_strpos, hardcoded to UTF-8.
+	 * @param $haystack String
+	 * @param $needle String
+	 * @param $offset String: optional start position
+	 * @param $encoding String: optional encoding; ignored
+	 * @return int
+	 */
+	public static function mb_strpos( $haystack, $needle, $offset = 0, $encoding = '' ) {
+		$needle = preg_quote( $needle, '/' );
+	
+		$ar = array();
+		preg_match( '/' . $needle . '/u', $haystack, $ar, PREG_OFFSET_CAPTURE, $offset );
+	
+		if( isset( $ar[0][1] ) ) {
+			return $ar[0][1];
+		} else {
+			return false;
+		}
+	}	
+	
+	/**
+	 * Fallback implementation of mb_strrpos, hardcoded to UTF-8.
+	 * @param $haystack String
+	 * @param $needle String
+	 * @param $offset String: optional start position
+	 * @param $encoding String: optional encoding; ignored
+	 * @return int
+	 */
+	public static function mb_strrpos( $haystack, $needle, $offset = 0, $encoding = '' ) {
+		$needle = preg_quote( $needle, '/' );
+	
+		$ar = array();
+		preg_match_all( '/' . $needle . '/u', $haystack, $ar, PREG_OFFSET_CAPTURE, $offset );
+	
+		if( isset( $ar[0] ) && count( $ar[0] ) > 0 &&
+			isset( $ar[0][count( $ar[0] ) - 1][1] ) ) {
+			return $ar[0][count( $ar[0] ) - 1][1];
+		} else {
+			return false;
+		}
+	}
+
+	/**
+	 * Fallback implementation of stream_resolve_include_path()
+	 * Native stream_resolve_include_path is available for PHP 5 >= 5.3.2
+	 * @param $filename String
+	 * @return String
+	 */
+	public static function stream_resolve_include_path( $filename ) {
+		$pathArray = explode( PATH_SEPARATOR, get_include_path() );
+		foreach ( $pathArray as $path ) {
+			$fullFilename = $path . DIRECTORY_SEPARATOR . $filename;
+			if ( file_exists( $fullFilename ) ) {
+				return $fullFilename;
+			}
+		}
+		return false;
+	}
+		
+}
-- 
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