0.2 - stable version with both cache and in-db data collection
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Peter Molnar
parent
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commit
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1 changed files with 120 additions and 4 deletions
124
wp-extraexif.php
124
wp-extraexif.php
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@ -3,7 +3,7 @@
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Plugin Name: wp-extraexif
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Plugin URI: https://github.com/petermolnar/wp-extraexif
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Description: Read extra EXIF for images with exiftool
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Version: 0.1
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Version: 0.2
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Author: Peter Molnar <hello@petermolnar.net>
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Author URI: http://petermolnar.net/
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License: GPLv3
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@ -31,6 +31,9 @@ namespace WP_EXTRAEXIF;
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\register_activation_hook( __FILE__ , '\WP_EXTRAEXIF\plugin_activate' );
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\register_deactivation_hook( __FILE__ , '\WP_EXTRAEXIF\plugin_deactivate' );
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define ( 'WP_EXTRAEXIF\CACHEDIR', \WP_CONTENT_DIR . DIRECTORY_SEPARATOR.
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'cache' . DIRECTORY_SEPARATOR . 'exif' . DIRECTORY_SEPARATOR );
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/**
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*
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*/
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@ -71,6 +74,13 @@ function plugin_activate() {
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if ( true !== $test )
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die ( $test );
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$dirs = [ CACHEDIR ];
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foreach ( $dirs as $dir ) {
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if ( ! is_dir( $dir ) ) {
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if ( ! mkdir( $dir ) )
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die( "failed to create {$dir}" );
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}
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}
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}
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/**
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@ -85,6 +95,14 @@ function plugin_deactivate() {
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*/
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function init() {
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add_filter( 'wp_read_image_metadata', 'WP_EXTRAEXIF\read_extra_exif', 1, 3 );
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$dirs = [ CACHEDIR ];
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foreach ( $dirs as $dir ) {
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if ( ! is_dir( $dir ) ) {
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if ( ! mkdir( $dir ) )
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debug( "failed to create {$dir}", 4 );
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}
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}
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}
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function test_exiftool () {
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@ -140,7 +158,7 @@ function read_extra_exif ( $meta, $path ='', $sourceImageType = '' ) {
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$args = join(' -', $args);
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$cmd = "exiftool -s -{$args} {$path}";
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debug("Extracting extra EXIF for {$path} with command {$cmd}", 7 );
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//debug("Extracting extra EXIF for {$path} with command {$cmd}", 7 );
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exec( $cmd, $exif, $retval);
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if ($retval != 0 ) {
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@ -160,11 +178,14 @@ function read_extra_exif ( $meta, $path ='', $sourceImageType = '' ) {
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}
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if ( ! empty( $metaextra ) ) {
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debug ( "Adding extra EXIF", 7);
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debug ( $metaextra, 7 );
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//debug ( "Adding extra EXIF", 7);
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//debug ( $metaextra, 7 );
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$meta = array_merge($meta, $metaextra);
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}
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//debug ( $path );
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exif_cache( $path );
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return $meta;
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}
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@ -195,6 +216,101 @@ function exif_gps2alt ( $string ) {
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return $alt;
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}
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function exif_cache( $jpg ) {
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if ( ! is_file( $jpg ) ) {
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debug( "nonexistend JPG file at {$jpg}", 4 );
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return;
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}
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$hash = md5 ( $jpg );
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$cached = CACHEDIR . $hash;
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$img_timestamp = @filemtime ( $jpg );
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if ( is_file( $cached ) ) {
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$cache_timestamp = @filemtime ( $cached );
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if ( $cache_timestamp == $img_timestamp ) {
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//debug( "EXIF cache is present for {$jpg}", 7 );
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return json_decode ( file_get_contents( $cached ), true );
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}
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}
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$filters = [
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'Make',
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'Camera Model Name',
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'Aperture',
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'GPS Altitude',
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'GPS Latitude',
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'GPS Longitude',
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'Lens ID',
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'Shutter Speed',
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'Field Of View',
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'Focal Length',
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'Hyperfocal Distance',
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'ISO',
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'Create Date',
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'Copyright Notice',
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];
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$merges = [
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'Shutter Speed' => 'Exposure Time',
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'Aperture' => 'F Number',
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];
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$mapping = [
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'Make' => 'make',
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'Camera Model Name' => 'camera',
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'Aperture' => 'aperture',
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'GPS Altitude' => 'geo_altitude',
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'GPS Latitude' => 'geo_latitude',
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'GPS Longitude' => 'geo_longitude',
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'Lens ID' => 'lens',
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'Shutter Speed' => 'shutter_speed',
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'Field Of View' => 'field_of_view',
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'Focal Length' => 'focal_length',
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'Hyperfocal Distance' => 'focus_distance',
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'ISO' => 'iso',
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'Create Date' => 'date',
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'Copyright Notice' => 'copyright',
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];
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$cmd = "exiftool {$jpg}";
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exec( $cmd, $exif_raw, $retval);
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if ($retval != 0 )
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die( "exiftool failed, exited with {$retval} and {$exif}" );
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foreach ( $exif_raw as $l ) {
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preg_match( '/^(.*?)\s+:\s+(.*)$/', $l, $data );
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if ( empty( $data[0]) || empty( $data[1] ) || empty( $data[2] ) )
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continue;
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if ( $data[1] == 'GPS Latitude' || $data[1] == 'GPS Longitude' )
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$data[2] = exif_gps2dec( $data[2] );
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elseif ( $data[1] == 'GPS Altitude' )
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$data[2] = exif_gps2alt( $data[2] );
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$exif [ $data[1] ] = $data[2];
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}
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$r = array();
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foreach ( $filters as $filter ) {
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if ( isset( $exif[ $filter ] ) )
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$r[ $mapping [ $filter ] ] = $exif[ $filter ];
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elseif ( isset( $merges[ $filter ] )
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&& isset( $exif[ $merges[ $filter ] ] ) )
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$r[ $mapping [ $filter ] ] = $exif[ $merges[ $filter ] ];
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}
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ksort( $r );
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file_put_contents( $cached , json_encode( $r, JSON_PRETTY_PRINT ) );
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touch( $cached, $img_timestamp );
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debug( "EXIF cache is created for {$jpg}", 6 );
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return $r;
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}
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/**
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*
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