From 183851b06bd6c52f3cae5375f433da720d410447 Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Wed, 11 Oct 2006 18:12:39 +0000
Subject: MediaWiki 1.7.1 wiederhergestellt

---
 includes/ImageFunctions.php | 223 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 223 insertions(+)
 create mode 100644 includes/ImageFunctions.php

(limited to 'includes/ImageFunctions.php')

diff --git a/includes/ImageFunctions.php b/includes/ImageFunctions.php
new file mode 100644
index 00000000..a66b4d79
--- /dev/null
+++ b/includes/ImageFunctions.php
@@ -0,0 +1,223 @@
+<?php
+
+/**
+ * Returns the image directory of an image
+ * The result is an absolute path.
+ *
+ * This function is called from thumb.php before Setup.php is included
+ *
+ * @param $fname String: file name of the image file.
+ * @public
+ */
+function wfImageDir( $fname ) {
+	global $wgUploadDirectory, $wgHashedUploadDirectory;
+
+	if (!$wgHashedUploadDirectory) { return $wgUploadDirectory; }
+
+	$hash = md5( $fname );
+	$dest = $wgUploadDirectory . '/' . $hash{0} . '/' . substr( $hash, 0, 2 );
+
+	return $dest;
+}
+
+/**
+ * Returns the image directory of an image's thubnail
+ * The result is an absolute path.
+ *
+ * This function is called from thumb.php before Setup.php is included
+ *
+ * @param $fname String: file name of the original image file
+ * @param $shared Boolean: (optional) use the shared upload directory (default: 'false').
+ * @public
+ */
+function wfImageThumbDir( $fname, $shared = false ) {
+	$base = wfImageArchiveDir( $fname, 'thumb', $shared );
+	if ( Image::isHashed( $shared ) ) {
+		$dir =  "$base/$fname";
+	} else {
+		$dir = $base;
+	}
+
+	return $dir;
+}
+
+/**
+ * Old thumbnail directory, kept for conversion
+ */
+function wfDeprecatedThumbDir( $thumbName , $subdir='thumb', $shared=false) {
+	return wfImageArchiveDir( $thumbName, $subdir, $shared );
+}
+
+/**
+ * Returns the image directory of an image's old version
+ * The result is an absolute path.
+ *
+ * This function is called from thumb.php before Setup.php is included
+ *
+ * @param $fname String: file name of the thumbnail file, including file size prefix.
+ * @param $subdir String: subdirectory of the image upload directory that should be used for storing the old version. Default is 'archive'.
+ * @param $shared Boolean use the shared upload directory (only relevant for other functions which call this one). Default is 'false'.
+ * @public
+ */
+function wfImageArchiveDir( $fname , $subdir='archive', $shared=false ) {
+	global $wgUploadDirectory, $wgHashedUploadDirectory;
+	global $wgSharedUploadDirectory, $wgHashedSharedUploadDirectory;
+	$dir = $shared ? $wgSharedUploadDirectory : $wgUploadDirectory;
+	$hashdir = $shared ? $wgHashedSharedUploadDirectory : $wgHashedUploadDirectory;
+	if (!$hashdir) { return $dir.'/'.$subdir; }
+	$hash = md5( $fname );
+
+	return $dir.'/'.$subdir.'/'.$hash[0].'/'.substr( $hash, 0, 2 );
+}
+
+
+/*
+ * Return the hash path component of an image path (URL or filesystem),
+ * e.g. "/3/3c/", or just "/" if hashing is not used.
+ *
+ * @param $dbkey The filesystem / database name of the file
+ * @param $fromSharedDirectory Use the shared file repository? It may
+ *   use different hash settings from the local one.
+ */
+function wfGetHashPath ( $dbkey, $fromSharedDirectory = false ) {
+	if( Image::isHashed( $fromSharedDirectory ) ) {
+		$hash = md5($dbkey);
+		return '/' . $hash{0} . '/' . substr( $hash, 0, 2 ) . '/';
+	} else {
+		return '/';
+	}
+}
+
+/**
+ * Returns the image URL of an image's old version
+ *
+ * @param $name String: file name of the image file
+ * @param $subdir String: (optional) subdirectory of the image upload directory that is used by the old version. Default is 'archive'
+ * @public
+ */
+function wfImageArchiveUrl( $name, $subdir='archive' ) {
+	global $wgUploadPath, $wgHashedUploadDirectory;
+
+	if ($wgHashedUploadDirectory) {
+		$hash = md5( substr( $name, 15) );
+		$url = $wgUploadPath.'/'.$subdir.'/' . $hash{0} . '/' .
+		  substr( $hash, 0, 2 ) . '/'.$name;
+	} else {
+		$url = $wgUploadPath.'/'.$subdir.'/'.$name;
+	}
+	return wfUrlencode($url);
+}
+
+/**
+ * Return a rounded pixel equivalent for a labeled CSS/SVG length.
+ * http://www.w3.org/TR/SVG11/coords.html#UnitIdentifiers
+ *
+ * @param $length String: CSS/SVG length.
+ * @return Integer: length in pixels
+ */
+function wfScaleSVGUnit( $length ) {
+	static $unitLength = array(
+		'px' => 1.0,
+		'pt' => 1.25,
+		'pc' => 15.0,
+		'mm' => 3.543307,
+		'cm' => 35.43307,
+		'in' => 90.0,
+		''   => 1.0, // "User units" pixels by default
+		'%'  => 2.0, // Fake it!
+		);
+	if( preg_match( '/^(\d+(?:\.\d+)?)(em|ex|px|pt|pc|cm|mm|in|%|)$/', $length, $matches ) ) {
+		$length = floatval( $matches[1] );
+		$unit = $matches[2];
+		return round( $length * $unitLength[$unit] );
+	} else {
+		// Assume pixels
+		return round( floatval( $length ) );
+	}
+}
+
+/**
+ * Compatible with PHP getimagesize()
+ * @todo support gzipped SVGZ
+ * @todo check XML more carefully
+ * @todo sensible defaults
+ *
+ * @param $filename String: full name of the file (passed to php fopen()).
+ * @return array
+ */
+function wfGetSVGsize( $filename ) {
+	$width = 256;
+	$height = 256;
+
+	// Read a chunk of the file
+	$f = fopen( $filename, "rt" );
+	if( !$f ) return false;
+	$chunk = fread( $f, 4096 );
+	fclose( $f );
+
+	// Uber-crappy hack! Run through a real XML parser.
+	if( !preg_match( '/<svg\s*([^>]*)\s*>/s', $chunk, $matches ) ) {
+		return false;
+	}
+	$tag = $matches[1];
+	if( preg_match( '/\bwidth\s*=\s*("[^"]+"|\'[^\']+\')/s', $tag, $matches ) ) {
+		$width = wfScaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
+	}
+	if( preg_match( '/\bheight\s*=\s*("[^"]+"|\'[^\']+\')/s', $tag, $matches ) ) {
+		$height = wfScaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
+	}
+
+	return array( $width, $height, 'SVG',
+		"width=\"$width\" height=\"$height\"" );
+}
+
+/**
+ * Determine if an image exists on the 'bad image list'.
+ *
+ * @param $name String: the image name to check
+ * @return bool
+ */
+function wfIsBadImage( $name ) {
+	static $titleList = false;
+	wfProfileIn( __METHOD__ );
+	$bad = false;
+	if( wfRunHooks( 'BadImage', array( $name, &$bad ) ) ) {
+		if( !$titleList ) {
+			# Build the list now
+			$titleList = array();
+			$lines = explode( "\n", wfMsgForContent( 'bad_image_list' ) );
+			foreach( $lines as $line ) {
+				if( preg_match( '/^\*\s*\[\[:?(.*?)\]\]/i', $line, $matches ) ) {
+					$title = Title::newFromText( $matches[1] );
+					if( is_object( $title ) && $title->getNamespace() == NS_IMAGE )
+						$titleList[ $title->getDBkey() ] = true;
+				}
+			}
+		}
+		wfProfileOut( __METHOD__ );
+		return array_key_exists( $name, $titleList );
+	} else {
+		wfProfileOut( __METHOD__ );
+		return $bad;
+	}
+}
+
+/**
+ * Calculate the largest thumbnail width for a given original file size
+ * such that the thumbnail's height is at most $maxHeight.
+ * @param $boxWidth Integer Width of the thumbnail box.
+ * @param $boxHeight Integer Height of the thumbnail box.
+ * @param $maxHeight Integer Maximum height expected for the thumbnail.
+ * @return Integer.
+ */
+function wfFitBoxWidth( $boxWidth, $boxHeight, $maxHeight ) {
+	$idealWidth = $boxWidth * $maxHeight / $boxHeight;
+	$roundedUp = ceil( $idealWidth );
+	if( round( $roundedUp * $boxHeight / $boxWidth ) > $maxHeight )
+		return floor( $idealWidth );
+	else
+		return $roundedUp;
+}
+
+
+?>
-- 
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