MediaWiki 1.15.4-scripts

[autoinstalls/mediawiki.git] / includes / DjVuImage.php

diff --git a/includes/DjVuImage.php b/includes/DjVuImage.php
index b48aaffdc05fe99cd1a58502b53e127862a60d94..8e7caf63d064f1740702047fa13bc2633f77a6fe 100644 (file)
--- a/includes/DjVuImage.php
+++ b/includes/DjVuImage.php
@@ -29,13 +29,13 @@
  * File format docs are available in source package for DjVuLibre:
  * http://djvulibre.djvuzone.org/
  *
- * @addtogroup Media
+ * @ingroup Media
  */
 class DjVuImage {
        function __construct( $filename ) {
                $this->mFilename = $filename;
        }
-       
+
        /**
         * Check if the given file is indeed a valid DjVu image file
         * @return bool
@@ -44,27 +44,27 @@ class DjVuImage {
                $info = $this->getInfo();
                return $info !== false;
        }
-       
-       
+
+
        /**
         * Return data in the style of getimagesize()
         * @return array or false on failure
         */
        public function getImageSize() {
                $data = $this->getInfo();
-               
+
                if( $data !== false ) {
                        $width  = $data['width'];
                        $height = $data['height'];
-                       
+
                        return array( $width, $height, 'DjVu',
                                "width=\"$width\" height=\"$height\"" );
                }
                return false;
        }
-       
+
        // ---------
-       
+
        /**
         * For debugging; dump the IFF chunk structure
         */
@@ -77,7 +77,7 @@ class DjVuImage {
                $this->dumpForm( $file, $chunkLength, 1 );
                fclose( $file );
        }
-       
+
        private function dumpForm( $file, $length, $indent ) {
                $start = ftell( $file );
                $secondary = fread( $file, 4 );
@@ -90,7 +90,7 @@ class DjVuImage {
                        // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
                        extract( unpack( 'a4chunk/NchunkLength', $chunkHeader ) );
                        echo str_repeat( ' ', $indent * 4 ) . "$chunk $chunkLength\n";
-                       
+
                        if( $chunk == 'FORM' ) {
                                $this->dumpForm( $file, $chunkLength, $indent + 1 );
                        } else {
@@ -102,7 +102,7 @@ class DjVuImage {
                        }
                }
        }
-       
+
        function getInfo() {
                wfSuppressWarnings();
                $file = fopen( $this->mFilename, 'rb' );
@@ -111,16 +111,16 @@ class DjVuImage {
                        wfDebug( __METHOD__ . ": missing or failed file read\n" );
                        return false;
                }
-               
+
                $header = fread( $file, 16 );
                $info = false;
-               
+
                if( strlen( $header ) < 16 ) {
                        wfDebug( __METHOD__ . ": too short file header\n" );
                } else {
                        // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
                        extract( unpack( 'a4magic/a4form/NformLength/a4subtype', $header ) );
-                       
+
                        if( $magic != 'AT&T' ) {
                                wfDebug( __METHOD__ . ": not a DjVu file\n" );
                        } elseif( $subtype == 'DJVU' ) {
@@ -136,7 +136,7 @@ class DjVuImage {
                fclose( $file );
                return $info;
        }
-       
+
        private function readChunk( $file ) {
                $header = fread( $file, 8 );
                if( strlen( $header ) < 8 ) {
@@ -147,16 +147,16 @@ class DjVuImage {
                        return array( $chunk, $length );
                }
        }
-       
+
        private function skipChunk( $file, $chunkLength ) {
                fseek( $file, $chunkLength, SEEK_CUR );
-               
+
                if( $chunkLength & 0x01 == 1 && !feof( $file ) ) {
                        // padding byte
                        fseek( $file, 1, SEEK_CUR );
                }
        }
-       
+
        private function getMultiPageInfo( $file, $formLength ) {
                // For now, we'll just look for the first page in the file
                // and report its information, hoping others are the same size.
@@ -166,7 +166,7 @@ class DjVuImage {
                        if( !$chunk ) {
                                break;
                        }
-                       
+
                        if( $chunk == 'FORM' ) {
                                $subtype = fread( $file, 4 );
                                if( $subtype == 'DJVU' ) {
@@ -179,18 +179,18 @@ class DjVuImage {
                                $this->skipChunk( $file, $length );
                        }
                } while( $length != 0 && !feof( $file ) && ftell( $file ) - $start < $formLength );
-               
+
                wfDebug( __METHOD__ . ": multi-page DJVU file contained no pages\n" );
                return false;
        }
-       
+
        private function getPageInfo( $file, $formLength ) {
                list( $chunk, $length ) = $this->readChunk( $file );
                if( $chunk != 'INFO' ) {
                        wfDebug( __METHOD__ . ": expected INFO chunk, got '$chunk'\n" );
                        return false;
                }
-               
+
                if( $length < 9 ) {
                        wfDebug( __METHOD__ . ": INFO should be 9 or 10 bytes, found $length\n" );
                        return false;
@@ -200,7 +200,7 @@ class DjVuImage {
                        wfDebug( __METHOD__ . ": INFO chunk cut off\n" );
                        return false;
                }
-               
+
                // FIXME: Would be good to replace this extract() call with something that explicitly initializes local variables.
                extract( unpack(
                        'nwidth/' .
@@ -210,7 +210,7 @@ class DjVuImage {
                        'vresolution/' .
                        'Cgamma', $data ) );
                # Newer files have rotation info in byte 10, but we don't use it yet.
-               
+
                return array(
                        'width' => $width,
                        'height' => $height,
@@ -320,14 +320,14 @@ EOT;
                        }
 
                        if ( preg_match( '/^ *INFO *\[\d*\] *DjVu *(\d+)x(\d+), *\w*, *(\d+) *dpi, *gamma=([0-9.-]+)/', $line, $m ) ) {
-                               $xml .= Xml::tags( 'OBJECT', 
+                               $xml .= Xml::tags( 'OBJECT',
                                        array(
                                                #'data' => '',
                                                #'type' => 'image/x.djvu',
                                                'height' => $m[2],
                                                'width' => $m[1],
                                                #'usemap' => '',
-                                       ), 
+                                       ),
                                        "\n" .
                                        Xml::element( 'PARAM', array( 'name' => 'DPI', 'value' => $m[3] ) ) . "\n" .
                                        Xml::element( 'PARAM', array( 'name' => 'GAMMA', 'value' => $m[4] ) ) . "\n"
@@ -340,6 +340,3 @@ EOT;
                return false;
        }
 }
-
-
-?>