From ca32f08966f1b51fcb19460f0996bb0c4048e6fe Mon Sep 17 00:00:00 2001 From: Pierre Schmitz 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/Exif.php | 1150 ----------------------------------------------------- 1 file changed, 1150 deletions(-) delete mode 100644 includes/Exif.php (limited to 'includes/Exif.php') diff --git a/includes/Exif.php b/includes/Exif.php deleted file mode 100644 index 630821c3..00000000 --- a/includes/Exif.php +++ /dev/null @@ -1,1150 +0,0 @@ - - * @copyright Copyright © 2005, Ævar Arnfjörð Bjarmason - * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License - * @see http://exif.org/Exif2-2.PDF The Exif 2.2 specification - * @file - */ - -/** - * @todo document (e.g. one-sentence class-overview description) - * @ingroup Media - */ -class Exif { - - const BYTE = 1; //!< An 8-bit (1-byte) unsigned integer. - const ASCII = 2; //!< An 8-bit byte containing one 7-bit ASCII code. The final byte is terminated with NULL. - const SHORT = 3; //!< A 16-bit (2-byte) unsigned integer. - const LONG = 4; //!< A 32-bit (4-byte) unsigned integer. - const RATIONAL = 5; //!< Two LONGs. The first LONG is the numerator and the second LONG expresses the denominator - const UNDEFINED = 7; //!< An 8-bit byte that can take any value depending on the field definition - const SLONG = 9; //!< A 32-bit (4-byte) signed integer (2's complement notation), - const SRATIONAL = 10; //!< Two SLONGs. The first SLONG is the numerator and the second SLONG is the denominator. - - //@{ - /* @var array - * @private - */ - - /** - * Exif tags grouped by category, the tagname itself is the key and the type - * is the value, in the case of more than one possible value type they are - * separated by commas. - */ - var $mExifTags; - - /** - * A one dimentional array of all Exif tags - */ - var $mFlatExifTags; - - /** - * The raw Exif data returned by exif_read_data() - */ - var $mRawExifData; - - /** - * A Filtered version of $mRawExifData that has been pruned of invalid - * tags and tags that contain content they shouldn't contain according - * to the Exif specification - */ - var $mFilteredExifData; - - /** - * Filtered and formatted Exif data, see FormatExif::getFormattedData() - */ - var $mFormattedExifData; - - //@} - - //@{ - /* @var string - * @private - */ - - /** - * The file being processed - */ - var $file; - - /** - * The basename of the file being processed - */ - var $basename; - - /** - * The private log to log to, e.g. 'exif' - */ - var $log = false; - - //@} - - /** - * Constructor - * - * @param $file String: filename. - */ - function __construct( $file ) { - /** - * Page numbers here refer to pages in the EXIF 2.2 standard - * - * @link http://exif.org/Exif2-2.PDF The Exif 2.2 specification - */ - $this->mExifTags = array( - # TIFF Rev. 6.0 Attribute Information (p22) - 'tiff' => array( - # Tags relating to image structure - 'structure' => array( - 'ImageWidth' => Exif::SHORT.','.Exif::LONG, # Image width - 'ImageLength' => Exif::SHORT.','.Exif::LONG, # Image height - 'BitsPerSample' => Exif::SHORT, # Number of bits per component - # "When a primary image is JPEG compressed, this designation is not" - # "necessary and is omitted." (p23) - 'Compression' => Exif::SHORT, # Compression scheme #p23 - 'PhotometricInterpretation' => Exif::SHORT, # Pixel composition #p23 - 'Orientation' => Exif::SHORT, # Orientation of image #p24 - 'SamplesPerPixel' => Exif::SHORT, # Number of components - 'PlanarConfiguration' => Exif::SHORT, # Image data arrangement #p24 - 'YCbCrSubSampling' => Exif::SHORT, # Subsampling ratio of Y to C #p24 - 'YCbCrPositioning' => Exif::SHORT, # Y and C positioning #p24-25 - 'XResolution' => Exif::RATIONAL, # Image resolution in width direction - 'YResolution' => Exif::RATIONAL, # Image resolution in height direction - 'ResolutionUnit' => Exif::SHORT, # Unit of X and Y resolution #(p26) - ), - - # Tags relating to recording offset - 'offset' => array( - 'StripOffsets' => Exif::SHORT.','.Exif::LONG, # Image data location - 'RowsPerStrip' => Exif::SHORT.','.Exif::LONG, # Number of rows per strip - 'StripByteCounts' => Exif::SHORT.','.Exif::LONG, # Bytes per compressed strip - 'JPEGInterchangeFormat' => Exif::SHORT.','.Exif::LONG, # Offset to JPEG SOI - 'JPEGInterchangeFormatLength' => Exif::SHORT.','.Exif::LONG, # Bytes of JPEG data - ), - - # Tags relating to image data characteristics - 'characteristics' => array( - 'TransferFunction' => Exif::SHORT, # Transfer function - 'WhitePoint' => Exif::RATIONAL, # White point chromaticity - 'PrimaryChromaticities' => Exif::RATIONAL, # Chromaticities of primarities - 'YCbCrCoefficients' => Exif::RATIONAL, # Color space transformation matrix coefficients #p27 - 'ReferenceBlackWhite' => Exif::RATIONAL # Pair of black and white reference values - ), - - # Other tags - 'other' => array( - 'DateTime' => Exif::ASCII, # File change date and time - 'ImageDescription' => Exif::ASCII, # Image title - 'Make' => Exif::ASCII, # Image input equipment manufacturer - 'Model' => Exif::ASCII, # Image input equipment model - 'Software' => Exif::ASCII, # Software used - 'Artist' => Exif::ASCII, # Person who created the image - 'Copyright' => Exif::ASCII, # Copyright holder - ), - ), - - # Exif IFD Attribute Information (p30-31) - 'exif' => array( - # Tags relating to version - 'version' => array( - # TODO: NOTE: Nonexistence of this field is taken to mean nonconformance - # to the EXIF 2.1 AND 2.2 standards - 'ExifVersion' => Exif::UNDEFINED, # Exif version - 'FlashpixVersion' => Exif::UNDEFINED, # Supported Flashpix version #p32 - ), - - # Tags relating to Image Data Characteristics - 'characteristics' => array( - 'ColorSpace' => Exif::SHORT, # Color space information #p32 - ), - - # Tags relating to image configuration - 'configuration' => array( - 'ComponentsConfiguration' => Exif::UNDEFINED, # Meaning of each component #p33 - 'CompressedBitsPerPixel' => Exif::RATIONAL, # Image compression mode - 'PixelYDimension' => Exif::SHORT.','.Exif::LONG, # Valid image width - 'PixelXDimension' => Exif::SHORT.','.Exif::LONG, # Valind image height - ), - - # Tags relating to related user information - 'user' => array( - 'MakerNote' => Exif::UNDEFINED, # Manufacturer notes - 'UserComment' => Exif::UNDEFINED, # User comments #p34 - ), - - # Tags relating to related file information - 'related' => array( - 'RelatedSoundFile' => Exif::ASCII, # Related audio file - ), - - # Tags relating to date and time - 'dateandtime' => array( - 'DateTimeOriginal' => Exif::ASCII, # Date and time of original data generation #p36 - 'DateTimeDigitized' => Exif::ASCII, # Date and time of original data generation - 'SubSecTime' => Exif::ASCII, # DateTime subseconds - 'SubSecTimeOriginal' => Exif::ASCII, # DateTimeOriginal subseconds - 'SubSecTimeDigitized' => Exif::ASCII, # DateTimeDigitized subseconds - ), - - # Tags relating to picture-taking conditions (p31) - 'conditions' => array( - 'ExposureTime' => Exif::RATIONAL, # Exposure time - 'FNumber' => Exif::RATIONAL, # F Number - 'ExposureProgram' => Exif::SHORT, # Exposure Program #p38 - 'SpectralSensitivity' => Exif::ASCII, # Spectral sensitivity - 'ISOSpeedRatings' => Exif::SHORT, # ISO speed rating - 'OECF' => Exif::UNDEFINED, # Optoelectronic conversion factor - 'ShutterSpeedValue' => Exif::SRATIONAL, # Shutter speed - 'ApertureValue' => Exif::RATIONAL, # Aperture - 'BrightnessValue' => Exif::SRATIONAL, # Brightness - 'ExposureBiasValue' => Exif::SRATIONAL, # Exposure bias - 'MaxApertureValue' => Exif::RATIONAL, # Maximum land aperture - 'SubjectDistance' => Exif::RATIONAL, # Subject distance - 'MeteringMode' => Exif::SHORT, # Metering mode #p40 - 'LightSource' => Exif::SHORT, # Light source #p40-41 - 'Flash' => Exif::SHORT, # Flash #p41-42 - 'FocalLength' => Exif::RATIONAL, # Lens focal length - 'SubjectArea' => Exif::SHORT, # Subject area - 'FlashEnergy' => Exif::RATIONAL, # Flash energy - 'SpatialFrequencyResponse' => Exif::UNDEFINED, # Spatial frequency response - 'FocalPlaneXResolution' => Exif::RATIONAL, # Focal plane X resolution - 'FocalPlaneYResolution' => Exif::RATIONAL, # Focal plane Y resolution - 'FocalPlaneResolutionUnit' => Exif::SHORT, # Focal plane resolution unit #p46 - 'SubjectLocation' => Exif::SHORT, # Subject location - 'ExposureIndex' => Exif::RATIONAL, # Exposure index - 'SensingMethod' => Exif::SHORT, # Sensing method #p46 - 'FileSource' => Exif::UNDEFINED, # File source #p47 - 'SceneType' => Exif::UNDEFINED, # Scene type #p47 - 'CFAPattern' => Exif::UNDEFINED, # CFA pattern - 'CustomRendered' => Exif::SHORT, # Custom image processing #p48 - 'ExposureMode' => Exif::SHORT, # Exposure mode #p48 - 'WhiteBalance' => Exif::SHORT, # White Balance #p49 - 'DigitalZoomRatio' => Exif::RATIONAL, # Digital zoom ration - 'FocalLengthIn35mmFilm' => Exif::SHORT, # Focal length in 35 mm film - 'SceneCaptureType' => Exif::SHORT, # Scene capture type #p49 - 'GainControl' => Exif::RATIONAL, # Scene control #p49-50 - 'Contrast' => Exif::SHORT, # Contrast #p50 - 'Saturation' => Exif::SHORT, # Saturation #p50 - 'Sharpness' => Exif::SHORT, # Sharpness #p50 - 'DeviceSettingDescription' => Exif::UNDEFINED, # Desice settings description - 'SubjectDistanceRange' => Exif::SHORT, # Subject distance range #p51 - ), - - 'other' => array( - 'ImageUniqueID' => Exif::ASCII, # Unique image ID - ), - ), - - # GPS Attribute Information (p52) - 'gps' => array( - 'GPSVersionID' => Exif::BYTE, # GPS tag version - 'GPSLatitudeRef' => Exif::ASCII, # North or South Latitude #p52-53 - 'GPSLatitude' => Exif::RATIONAL, # Latitude - 'GPSLongitudeRef' => Exif::ASCII, # East or West Longitude #p53 - 'GPSLongitude' => Exif::RATIONAL, # Longitude - 'GPSAltitudeRef' => Exif::BYTE, # Altitude reference - 'GPSAltitude' => Exif::RATIONAL, # Altitude - 'GPSTimeStamp' => Exif::RATIONAL, # GPS time (atomic clock) - 'GPSSatellites' => Exif::ASCII, # Satellites used for measurement - 'GPSStatus' => Exif::ASCII, # Receiver status #p54 - 'GPSMeasureMode' => Exif::ASCII, # Measurement mode #p54-55 - 'GPSDOP' => Exif::RATIONAL, # Measurement precision - 'GPSSpeedRef' => Exif::ASCII, # Speed unit #p55 - 'GPSSpeed' => Exif::RATIONAL, # Speed of GPS receiver - 'GPSTrackRef' => Exif::ASCII, # Reference for direction of movement #p55 - 'GPSTrack' => Exif::RATIONAL, # Direction of movement - 'GPSImgDirectionRef' => Exif::ASCII, # Reference for direction of image #p56 - 'GPSImgDirection' => Exif::RATIONAL, # Direction of image - 'GPSMapDatum' => Exif::ASCII, # Geodetic survey data used - 'GPSDestLatitudeRef' => Exif::ASCII, # Reference for latitude of destination #p56 - 'GPSDestLatitude' => Exif::RATIONAL, # Latitude destination - 'GPSDestLongitudeRef' => Exif::ASCII, # Reference for longitude of destination #p57 - 'GPSDestLongitude' => Exif::RATIONAL, # Longitude of destination - 'GPSDestBearingRef' => Exif::ASCII, # Reference for bearing of destination #p57 - 'GPSDestBearing' => Exif::RATIONAL, # Bearing of destination - 'GPSDestDistanceRef' => Exif::ASCII, # Reference for distance to destination #p57-58 - 'GPSDestDistance' => Exif::RATIONAL, # Distance to destination - 'GPSProcessingMethod' => Exif::UNDEFINED, # Name of GPS processing method - 'GPSAreaInformation' => Exif::UNDEFINED, # Name of GPS area - 'GPSDateStamp' => Exif::ASCII, # GPS date - 'GPSDifferential' => Exif::SHORT, # GPS differential correction - ), - ); - - $this->file = $file; - $this->basename = wfBaseName( $this->file ); - - $this->makeFlatExifTags(); - - $this->debugFile( $this->basename, __FUNCTION__, true ); - wfSuppressWarnings(); - $data = exif_read_data( $this->file ); - wfRestoreWarnings(); - /** - * exif_read_data() will return false on invalid input, such as - * when somebody uploads a file called something.jpeg - * containing random gibberish. - */ - $this->mRawExifData = $data ? $data : array(); - - $this->makeFilteredData(); - $this->makeFormattedData(); - - $this->debugFile( __FUNCTION__, false ); - } - - /**#@+ - * @private - */ - /** - * Generate a flat list of the exif tags - */ - function makeFlatExifTags() { - $this->extractTags( $this->mExifTags ); - } - - /** - * A recursing extractor function used by makeFlatExifTags() - * - * Note: This used to use an array_walk function, but it made PHP5 - * segfault, see `cvs diff -u -r 1.4 -r 1.5 Exif.php` - */ - function extractTags( &$tagset ) { - foreach( $tagset as $key => $val ) { - if( is_array( $val ) ) { - $this->extractTags( $val ); - } else { - $this->mFlatExifTags[$key] = $val; - } - } - } - - /** - * Make $this->mFilteredExifData - */ - function makeFilteredData() { - $this->mFilteredExifData = $this->mRawExifData; - - foreach( $this->mFilteredExifData as $k => $v ) { - if ( !in_array( $k, array_keys( $this->mFlatExifTags ) ) ) { - $this->debug( $v, __FUNCTION__, "'$k' is not a valid Exif tag" ); - unset( $this->mFilteredExifData[$k] ); - } - } - - foreach( $this->mFilteredExifData as $k => $v ) { - if ( !$this->validate($k, $v) ) { - $this->debug( $v, __FUNCTION__, "'$k' contained invalid data" ); - unset( $this->mFilteredExifData[$k] ); - } - } - } - - /** - * @todo document - */ - function makeFormattedData( ) { - $format = new FormatExif( $this->getFilteredData() ); - $this->mFormattedExifData = $format->getFormattedData(); - } - /**#@-*/ - - /**#@+ - * @return array - */ - /** - * Get $this->mRawExifData - */ - function getData() { - return $this->mRawExifData; - } - - /** - * Get $this->mFilteredExifData - */ - function getFilteredData() { - return $this->mFilteredExifData; - } - - /** - * Get $this->mFormattedExifData - */ - function getFormattedData() { - return $this->mFormattedExifData; - } - /**#@-*/ - - /** - * The version of the output format - * - * Before the actual metadata information is saved in the database we - * strip some of it since we don't want to save things like thumbnails - * which usually accompany Exif data. This value gets saved in the - * database along with the actual Exif data, and if the version in the - * database doesn't equal the value returned by this function the Exif - * data is regenerated. - * - * @return int - */ - public static function version() { - return 1; // We don't need no bloddy constants! - } - - /**#@+ - * Validates if a tag value is of the type it should be according to the Exif spec - * - * @private - * - * @param $in Mixed: the input value to check - * @return bool - */ - function isByte( $in ) { - if ( !is_array( $in ) && sprintf('%d', $in) == $in && $in >= 0 && $in <= 255 ) { - $this->debug( $in, __FUNCTION__, true ); - return true; - } else { - $this->debug( $in, __FUNCTION__, false ); - return false; - } - } - - function isASCII( $in ) { - if ( is_array( $in ) ) { - return false; - } - - if ( preg_match( "/[^\x0a\x20-\x7e]/", $in ) ) { - $this->debug( $in, __FUNCTION__, 'found a character not in our whitelist' ); - return false; - } - - if ( preg_match( '/^\s*$/', $in ) ) { - $this->debug( $in, __FUNCTION__, 'input consisted solely of whitespace' ); - return false; - } - - return true; - } - - function isShort( $in ) { - if ( !is_array( $in ) && sprintf('%d', $in) == $in && $in >= 0 && $in <= 65536 ) { - $this->debug( $in, __FUNCTION__, true ); - return true; - } else { - $this->debug( $in, __FUNCTION__, false ); - return false; - } - } - - function isLong( $in ) { - if ( !is_array( $in ) && sprintf('%d', $in) == $in && $in >= 0 && $in <= 4294967296 ) { - $this->debug( $in, __FUNCTION__, true ); - return true; - } else { - $this->debug( $in, __FUNCTION__, false ); - return false; - } - } - - function isRational( $in ) { - $m = array(); - if ( !is_array( $in ) && @preg_match( '/^(\d+)\/(\d+[1-9]|[1-9]\d*)$/', $in, $m ) ) { # Avoid division by zero - return $this->isLong( $m[1] ) && $this->isLong( $m[2] ); - } else { - $this->debug( $in, __FUNCTION__, 'fed a non-fraction value' ); - return false; - } - } - - function isUndefined( $in ) { - if ( !is_array( $in ) && preg_match( '/^\d{4}$/', $in ) ) { // Allow ExifVersion and FlashpixVersion - $this->debug( $in, __FUNCTION__, true ); - return true; - } else { - $this->debug( $in, __FUNCTION__, false ); - return false; - } - } - - function isSlong( $in ) { - if ( $this->isLong( abs( $in ) ) ) { - $this->debug( $in, __FUNCTION__, true ); - return true; - } else { - $this->debug( $in, __FUNCTION__, false ); - return false; - } - } - - function isSrational( $in ) { - $m = array(); - if ( !is_array( $in ) && preg_match( '/^(\d+)\/(\d+[1-9]|[1-9]\d*)$/', $in, $m ) ) { # Avoid division by zero - return $this->isSlong( $m[0] ) && $this->isSlong( $m[1] ); - } else { - $this->debug( $in, __FUNCTION__, 'fed a non-fraction value' ); - return false; - } - } - /**#@-*/ - - /** - * Validates if a tag has a legal value according to the Exif spec - * - * @private - * - * @param $tag String: the tag to check. - * @param $val Mixed: the value of the tag. - * @return bool - */ - function validate( $tag, $val ) { - $debug = "tag is '$tag'"; - // Does not work if not typecast - switch( (string)$this->mFlatExifTags[$tag] ) { - case (string)Exif::BYTE: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isByte( $val ); - case (string)Exif::ASCII: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isASCII( $val ); - case (string)Exif::SHORT: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isShort( $val ); - case (string)Exif::LONG: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isLong( $val ); - case (string)Exif::RATIONAL: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isRational( $val ); - case (string)Exif::UNDEFINED: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isUndefined( $val ); - case (string)Exif::SLONG: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isSlong( $val ); - case (string)Exif::SRATIONAL: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isSrational( $val ); - case (string)Exif::SHORT.','.Exif::LONG: - $this->debug( $val, __FUNCTION__, $debug ); - return $this->isShort( $val ) || $this->isLong( $val ); - default: - $this->debug( $val, __FUNCTION__, "The tag '$tag' is unknown" ); - return false; - } - } - - /** - * Convenience function for debugging output - * - * @private - * - * @param $in Mixed: - * @param $fname String: - * @param $action Mixed: , default NULL. - */ - function debug( $in, $fname, $action = null ) { - if ( !$this->log ) { - return; - } - $type = gettype( $in ); - $class = ucfirst( __CLASS__ ); - if ( $type === 'array' ) - $in = print_r( $in, true ); - - if ( $action === true ) - wfDebugLog( $this->log, "$class::$fname: accepted: '$in' (type: $type)\n"); - elseif ( $action === false ) - wfDebugLog( $this->log, "$class::$fname: rejected: '$in' (type: $type)\n"); - elseif ( $action === null ) - wfDebugLog( $this->log, "$class::$fname: input was: '$in' (type: $type)\n"); - else - wfDebugLog( $this->log, "$class::$fname: $action (type: $type; content: '$in')\n"); - } - - /** - * Convenience function for debugging output - * - * @private - * - * @param $fname String: the name of the function calling this function - * @param $io Boolean: Specify whether we're beginning or ending - */ - function debugFile( $fname, $io ) { - if ( !$this->log ) { - return; - } - $class = ucfirst( __CLASS__ ); - if ( $io ) { - wfDebugLog( $this->log, "$class::$fname: begin processing: '{$this->basename}'\n" ); - } else { - wfDebugLog( $this->log, "$class::$fname: end processing: '{$this->basename}'\n" ); - } - } - -} - -/** - * @todo document (e.g. one-sentence class-overview description) - * @ingroup Media - */ -class FormatExif { - /** - * The Exif data to format - * - * @var array - * @private - */ - var $mExif; - - /** - * Constructor - * - * @param $exif Array: the Exif data to format ( as returned by - * Exif::getFilteredData() ) - */ - function __construct( $exif ) { - $this->mExif = $exif; - } - - /** - * Numbers given by Exif user agents are often magical, that is they - * should be replaced by a detailed explanation depending on their - * value which most of the time are plain integers. This function - * formats Exif values into human readable form. - * - * @return array - */ - function getFormattedData() { - global $wgLang; - - $tags =& $this->mExif; - - $resolutionunit = !isset( $tags['ResolutionUnit'] ) || $tags['ResolutionUnit'] == 2 ? 2 : 3; - unset( $tags['ResolutionUnit'] ); - - foreach( $tags as $tag => $val ) { - switch( $tag ) { - case 'Compression': - switch( $val ) { - case 1: case 6: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'PhotometricInterpretation': - switch( $val ) { - case 2: case 6: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'Orientation': - switch( $val ) { - case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'PlanarConfiguration': - switch( $val ) { - case 1: case 2: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - // TODO: YCbCrSubSampling - // TODO: YCbCrPositioning - - case 'XResolution': - case 'YResolution': - switch( $resolutionunit ) { - case 2: - $tags[$tag] = $this->msg( 'XYResolution', 'i', $this->formatNum( $val ) ); - break; - case 3: - $this->msg( 'XYResolution', 'c', $this->formatNum( $val ) ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - // TODO: YCbCrCoefficients #p27 (see annex E) - case 'ExifVersion': case 'FlashpixVersion': - $tags[$tag] = "$val"/100; - break; - - case 'ColorSpace': - switch( $val ) { - case 1: case 'FFFF.H': - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'ComponentsConfiguration': - switch( $val ) { - case 0: case 1: case 2: case 3: case 4: case 5: case 6: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'DateTime': - case 'DateTimeOriginal': - case 'DateTimeDigitized': - if( $val == '0000:00:00 00:00:00' ) { - $tags[$tag] = wfMsg('exif-unknowndate'); - } elseif( preg_match( '/^(?:\d{4}):(?:\d\d):(?:\d\d) (?:\d\d):(?:\d\d):(?:\d\d)$/', $val ) ) { - $tags[$tag] = $wgLang->timeanddate( wfTimestamp(TS_MW, $val) ); - } - break; - - case 'ExposureProgram': - switch( $val ) { - case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 8: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'SubjectDistance': - $tags[$tag] = $this->msg( $tag, '', $this->formatNum( $val ) ); - break; - - case 'MeteringMode': - switch( $val ) { - case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7: case 255: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'LightSource': - switch( $val ) { - case 0: case 1: case 2: case 3: case 4: case 9: case 10: case 11: - case 12: case 13: case 14: case 15: case 17: case 18: case 19: case 20: - case 21: case 22: case 23: case 24: case 255: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'Flash': - $flashDecode = array( - 'fired' => $val & bindec( '00000001' ), - 'return' => ($val & bindec( '00000110' )) >> 1, - 'mode' => ($val & bindec( '00011000' )) >> 3, - 'function' => ($val & bindec( '00100000' )) >> 5, - 'redeye' => ($val & bindec( '01000000' )) >> 6, -// 'reserved' => ($val & bindec( '10000000' )) >> 7, - ); - - # We do not need to handle unknown values since all are used. - foreach( $flashDecode as $subTag => $subValue ) { - # We do not need any message for zeroed values. - if( $subTag != 'fired' && $subValue == 0) { - continue; - } - $fullTag = $tag . '-' . $subTag ; - $flashMsgs[] = $this->msg( $fullTag, $subValue ); - } - $tags[$tag] = $wgLang->commaList( $flashMsgs ); - break; - - case 'FocalPlaneResolutionUnit': - switch( $val ) { - case 2: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'SensingMethod': - switch( $val ) { - case 1: case 2: case 3: case 4: case 5: case 7: case 8: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'FileSource': - switch( $val ) { - case 3: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'SceneType': - switch( $val ) { - case 1: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'CustomRendered': - switch( $val ) { - case 0: case 1: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'ExposureMode': - switch( $val ) { - case 0: case 1: case 2: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'WhiteBalance': - switch( $val ) { - case 0: case 1: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'SceneCaptureType': - switch( $val ) { - case 0: case 1: case 2: case 3: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'GainControl': - switch( $val ) { - case 0: case 1: case 2: case 3: case 4: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'Contrast': - switch( $val ) { - case 0: case 1: case 2: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'Saturation': - switch( $val ) { - case 0: case 1: case 2: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'Sharpness': - switch( $val ) { - case 0: case 1: case 2: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'SubjectDistanceRange': - switch( $val ) { - case 0: case 1: case 2: case 3: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'GPSLatitudeRef': - case 'GPSDestLatitudeRef': - switch( $val ) { - case 'N': case 'S': - $tags[$tag] = $this->msg( 'GPSLatitude', $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'GPSLongitudeRef': - case 'GPSDestLongitudeRef': - switch( $val ) { - case 'E': case 'W': - $tags[$tag] = $this->msg( 'GPSLongitude', $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'GPSStatus': - switch( $val ) { - case 'A': case 'V': - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'GPSMeasureMode': - switch( $val ) { - case 2: case 3: - $tags[$tag] = $this->msg( $tag, $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'GPSSpeedRef': - case 'GPSDestDistanceRef': - switch( $val ) { - case 'K': case 'M': case 'N': - $tags[$tag] = $this->msg( 'GPSSpeed', $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'GPSTrackRef': - case 'GPSImgDirectionRef': - case 'GPSDestBearingRef': - switch( $val ) { - case 'T': case 'M': - $tags[$tag] = $this->msg( 'GPSDirection', $val ); - break; - default: - $tags[$tag] = $val; - break; - } - break; - - case 'GPSDateStamp': - $tags[$tag] = $wgLang->date( substr( $val, 0, 4 ) . substr( $val, 5, 2 ) . substr( $val, 8, 2 ) . '000000' ); - break; - - // This is not in the Exif standard, just a special - // case for our purposes which enables wikis to wikify - // the make, model and software name to link to their articles. - case 'Make': - case 'Model': - case 'Software': - $tags[$tag] = $this->msg( $tag, '', $val ); - break; - - case 'ExposureTime': - // Show the pretty fraction as well as decimal version - $tags[$tag] = wfMsg( 'exif-exposuretime-format', - $this->formatFraction( $val ), $this->formatNum( $val ) ); - break; - - case 'FNumber': - $tags[$tag] = wfMsg( 'exif-fnumber-format', - $this->formatNum( $val ) ); - break; - - case 'FocalLength': - $tags[$tag] = wfMsg( 'exif-focallength-format', - $this->formatNum( $val ) ); - break; - - // Do not transform fields with pure text. - // For some languages the formatNum() conversion results to wrong output like - // foo,bar@example,com or foo٫bar@example٫com - case 'ImageDescription': - case 'Artist': - case 'Copyright': - $tags[$tag] = htmlspecialchars( $val ); - break; - default: - $tags[$tag] = $this->formatNum( $val ); - break; - } - } - - return $tags; - } - - /** - * Convenience function for getFormattedData() - * - * @private - * - * @param $tag String: the tag name to pass on - * @param $val String: the value of the tag - * @param $arg String: an argument to pass ($1) - * @return string A wfMsg of "exif-$tag-$val" in lower case - */ - function msg( $tag, $val, $arg = null ) { - global $wgContLang; - - if ($val === '') - $val = 'value'; - return wfMsg( $wgContLang->lc( "exif-$tag-$val" ), $arg ); - } - - /** - * Format a number, convert numbers from fractions into floating point - * numbers - * - * @private - * - * @param $num Mixed: the value to format - * @return mixed A floating point number or whatever we were fed - */ - function formatNum( $num ) { - global $wgLang; - - $m = array(); - if ( preg_match( '/^(\d+)\/(\d+)$/', $num, $m ) ) - return $wgLang->formatNum( $m[2] != 0 ? $m[1] / $m[2] : $num ); - else - return $wgLang->formatNum( $num ); - } - - /** - * Format a rational number, reducing fractions - * - * @private - * - * @param $num Mixed: the value to format - * @return mixed A floating point number or whatever we were fed - */ - function formatFraction( $num ) { - $m = array(); - if ( preg_match( '/^(\d+)\/(\d+)$/', $num, $m ) ) { - $numerator = intval( $m[1] ); - $denominator = intval( $m[2] ); - $gcd = $this->gcd( $numerator, $denominator ); - if( $gcd != 0 ) { - // 0 shouldn't happen! ;) - return $this->formatNum( $numerator / $gcd ) . '/' . $this->formatNum( $denominator / $gcd ); - } - } - return $this->formatNum( $num ); - } - - /** - * Calculate the greatest common divisor of two integers. - * - * @param $a Integer: FIXME - * @param $b Integer: FIXME - * @return int - * @private - */ - function gcd( $a, $b ) { - /* - // http://en.wikipedia.org/wiki/Euclidean_algorithm - // Recursive form would be: - if( $b == 0 ) - return $a; - else - return gcd( $b, $a % $b ); - */ - while( $b != 0 ) { - $remainder = $a % $b; - - // tail recursion... - $a = $b; - $b = $remainder; - } - return $a; - } -} -- cgit v1.2.2