function ewww_image_optimizer_notice_utils() { global $ewww_debug; $ewww_debug .= "<b>ewww_image_optimizer_notice_utils()</b><br>"; // Check if exec is disabled if (ewww_image_optimizer_exec_check()) { //display a warning if exec() is disabled, can't run much of anything without it echo "<div id='ewww-image-optimizer-warning-opt-png' class='error'><p>" . __('EWWW Image Optimizer requires exec(). Your system administrator has disabled this function.', EWWW_IMAGE_OPTIMIZER_DOMAIN) . "</p></div>"; define('EWWW_IMAGE_OPTIMIZER_NOEXEC', true); ewww_image_optimizer_disable_tools(); return; // otherwise, query the php settings for safe mode } elseif (ewww_image_optimizer_safemode_check()) { // display a warning to the user echo "<div id='ewww-image-optimizer-warning-opt-png' class='error'><p>" . __('Safe Mode is turned on for PHP. This plugin cannot operate in Safe Mode.', EWWW_IMAGE_OPTIMIZER_DOMAIN) . "</p></div>"; define('EWWW_IMAGE_OPTIMIZER_NOEXEC', true); ewww_image_optimizer_disable_tools(); return; } else { define('EWWW_IMAGE_OPTIMIZER_NOEXEC', false); } // attempt to retrieve values for utility paths, and store them in the appropriate variables $required = ewww_image_optimizer_path_check(); // set the variables false otherwise $skip_jpegtran_check = false; $skip_optipng_check = false; $skip_gifsicle_check = false; $skip_pngout_check = false; $skip_pngquant_check = true; // if the user has disabled a variable, we aren't going to bother checking to see if it is there if (ewww_image_optimizer_get_option('ewww_image_optimizer_disable_jpegtran')) { $skip_jpegtran_check = true; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_disable_optipng')) { $skip_optipng_check = true; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_disable_gifsicle')) { $skip_gifsicle_check = true; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_disable_pngout')) { $skip_pngout_check = true; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_png_lossy')) { $skip_pngquant_check = false; } // we are going to store our validation results in $missing $missing = array(); // go through each of the required tools foreach ($required as $key => $req) { // if the tool wasn't found, add it to the $missing array if we are supposed to check the tool in question switch ($key) { case 'JPEGTRAN': if (!$skip_jpegtran_check && empty($req)) { $missing[] = 'jpegtran'; $req = false; } define('EWWW_IMAGE_OPTIMIZER_' . $key, $req); break; case 'OPTIPNG': if (!$skip_optipng_check && empty($req)) { $missing[] = 'optipng'; $req = false; } define('EWWW_IMAGE_OPTIMIZER_' . $key, $req); break; case 'GIFSICLE': if (!$skip_gifsicle_check && empty($req)) { $missing[] = 'gifsicle'; $req = false; } define('EWWW_IMAGE_OPTIMIZER_' . $key, $req); break; case 'PNGOUT': if (!$skip_pngout_check && empty($req)) { $missing[] = 'pngout'; $req = false; } define('EWWW_IMAGE_OPTIMIZER_' . $key, $req); break; case 'PNGQUANT': if (!$skip_pngquant_check && empty($req)) { $missing[] = 'pngquant'; $req = false; } define('EWWW_IMAGE_OPTIMIZER_' . $key, $req); break; } } // expand the missing utilities list for use in the error message $msg = implode(', ', $missing); // if there is a message, display the warning if (!empty($msg)) { echo "<div id='ewww-image-optimizer-warning-opt-png' class='error'><p>" . sprintf(__('EWWW Image Optimizer uses %1$s, %2$s, %3$s, %4$s, and %5$s. You are missing: %6$s. Please install via the %7$s or the %8$s.', EWWW_IMAGE_OPTIMIZER_DOMAIN), "<a href='http://jpegclub.org/jpegtran/'>jpegtran</a>", "<a href='http://optipng.sourceforge.net/'>optipng</a>", "<a href='http://advsys.net/ken/utils.htm'>pngout</a>", "<a href='http://pngquant.org/'>pngquant</a>", "<a href='http://www.lcdf.org/gifsicle/'>gifsicle</a>", $msg, "<a href='options-general.php?page=ewww-image-optimizer/ewww-image-optimizer.php'>" . __('Settings Page', EWWW_IMAGE_OPTIMIZER_DOMAIN) . "</a>", "<a href='http://wordpress.org/extend/plugins/ewww-image-optimizer/installation/'>" . __('Installation Instructions', EWWW_IMAGE_OPTIMIZER_DOMAIN) . "</a>") . "</p></div>"; } }
/** * Process an image. * * Returns an array of the $file, $results, $converted to tell us if an image changes formats, and the $original file if it did. * * @param string $file Full absolute path to the image file * @param int $gallery_type 1=wordpress, 2=nextgen, 3=flagallery, 4=aux_images, 5=image editor, 6=imagestore, 7=retina * @param boolean $converted tells us if this is a resize and the full image was converted to a new format * @param boolean $new tells the optimizer that this is a new image, so it should attempt conversion regardless of previous results * @param boolean $fullsize tells the optimizer this is a full size image * @returns array */ function ewww_image_optimizer($file, $gallery_type = 4, $converted = false, $new = false, $fullsize = false) { global $ewww_debug; $ewww_debug .= "<b>ewww_image_optimizer()</b><br>"; // if the plugin gets here without initializing, we need to run through some things first if (!defined('EWWW_IMAGE_OPTIMIZER_CLOUD')) { ewww_image_optimizer_init(); } $bypass_optimization = apply_filters('ewww_image_optimizer_bypass', false, $file); if (true === $bypass_optimization) { // tell the user optimization was skipped $msg = __("Optimization skipped", EWWW_IMAGE_OPTIMIZER_DOMAIN); $ewww_debug .= "optimization bypassed: {$file} <br>"; // send back the above message return array(false, $msg, $converted, $file); } // initialize the original filename $original = $file; $result = ''; // check that the file exists if (FALSE === file_exists($file)) { // tell the user we couldn't find the file $msg = sprintf(__('Could not find %s', EWWW_IMAGE_OPTIMIZER_DOMAIN), "<span class='code'>{$file}</span>"); $ewww_debug .= "file doesn't appear to exist: {$file} <br>"; // send back the above message return array(false, $msg, $converted, $original); } // check that the file is writable if (FALSE === is_writable($file)) { // tell the user we can't write to the file $msg = sprintf(__('%s is not writable', EWWW_IMAGE_OPTIMIZER_DOMAIN), "<span class='code'>{$file}</span>"); $ewww_debug .= "couldn't write to the file {$file}<br>"; // send back the above message return array(false, $msg, $converted, $original); } if (function_exists('fileperms')) { $file_perms = substr(sprintf('%o', fileperms($file)), -4); } $file_owner = 'unknown'; $file_group = 'unknown'; if (function_exists('posix_getpwuid')) { $file_owner = posix_getpwuid(fileowner($file)); $file_owner = $file_owner['name']; } if (function_exists('posix_getgrgid')) { $file_group = posix_getgrgid(filegroup($file)); $file_group = $file_group['name']; } $ewww_debug .= "permissions: {$file_perms}, owner: {$file_owner}, group: {$file_group} <br>"; $type = ewww_image_optimizer_mimetype($file, 'i'); if (strpos($type, 'image') === FALSE) { //otherwise we store an error message since we couldn't get the mime-type $msg = __('Missing finfo_file(), getimagesize() and mime_content_type() PHP functions', EWWW_IMAGE_OPTIMIZER_DOMAIN); $ewww_debug .= "couldn't find any functions for mimetype detection<br>"; return array(false, $msg, $converted, $original); } if (!EWWW_IMAGE_OPTIMIZER_CLOUD) { // check to see if 'nice' exists $nice = ewww_image_optimizer_find_binary('nice', 'n'); if (!defined('EWWW_IMAGE_OPTIMIZER_NOEXEC')) { // Check if exec is disabled if (ewww_image_optimizer_exec_check()) { define('EWWW_IMAGE_OPTIMIZER_NOEXEC', true); $ewww_debug .= 'exec seems to be disabled<br>'; ewww_image_optimizer_disable_tools(); // otherwise, query the php settings for safe mode } elseif (ewww_image_optimizer_safemode_check()) { define('EWWW_IMAGE_OPTIMIZER_NOEXEC', true); $ewww_debug .= 'safe mode appears to be enabled<br>'; ewww_image_optimizer_disable_tools(); } else { define('EWWW_IMAGE_OPTIMIZER_NOEXEC', false); } } } // if the user has disabled the utility checks if (ewww_image_optimizer_get_option('ewww_image_optimizer_skip_check') == TRUE || EWWW_IMAGE_OPTIMIZER_CLOUD) { $skip_jpegtran_check = true; $skip_optipng_check = true; $skip_gifsicle_check = true; $skip_pngout_check = true; } else { // otherwise we set the variables to false $skip_jpegtran_check = false; $skip_optipng_check = false; $skip_gifsicle_check = false; $skip_pngout_check = false; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_cloud_jpg')) { $skip_jpegtran_check = true; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_cloud_png')) { $skip_optipng_check = true; $skip_pngout_check = true; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_cloud_gif')) { $skip_gifsicle_check = true; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_metadata_skip_full') && $fullsize) { $keep_metadata = true; } else { $keep_metadata = false; } if (ewww_image_optimizer_get_option('ewww_image_optimizer_lossy_skip_full') && $fullsize) { $skip_lossy = true; } else { $skip_lossy = false; } if (ini_get('max_execution_time') < 90 && ewww_image_optimizer_stl_check()) { set_time_limit(0); } // if the full-size image was converted if ($converted) { $ewww_debug .= "full-size image was converted, need to rebuild filename for meta<br>"; $filenum = $converted; // grab the file extension preg_match('/\\.\\w+$/', $file, $fileext); // strip the file extension $filename = str_replace($fileext[0], '', $file); // grab the dimensions preg_match('/-\\d+x\\d+(-\\d+)*$/', $filename, $fileresize); // strip the dimensions $filename = str_replace($fileresize[0], '', $filename); // reconstruct the filename with the same increment (stored in $converted) as the full version $refile = $filename . '-' . $filenum . $fileresize[0] . $fileext[0]; // rename the file rename($file, $refile); $ewww_debug .= "moved {$file} to {$refile}<br>"; // and set $file to the new filename $file = $refile; $original = $file; } // get the original image size $orig_size = filesize($file); $ewww_debug .= "original filesize: {$orig_size}<br>"; if ($orig_size < ewww_image_optimizer_get_option('ewww_image_optimizer_skip_size')) { // tell the user optimization was skipped $msg = __("Optimization skipped", EWWW_IMAGE_OPTIMIZER_DOMAIN); $ewww_debug .= "optimization bypassed due to filesize: {$file} <br>"; // send back the above message return array(false, $msg, $converted, $file); } if ($type == 'image/png' && ewww_image_optimizer_get_option('ewww_image_optimizer_skip_png_size') && $orig_size > ewww_image_optimizer_get_option('ewww_image_optimizer_skip_png_size')) { // tell the user optimization was skipped $msg = __("Optimization skipped", EWWW_IMAGE_OPTIMIZER_DOMAIN); $ewww_debug .= "optimization bypassed due to filesize: {$file} <br>"; // send back the above message return array($file, $msg, $converted, $file); } // initialize $new_size with the original size, HOW ABOUT A ZERO... //$new_size = $orig_size; $new_size = 0; // set the optimization process to OFF $optimize = false; // toggle the convert process to ON $convert = true; // run the appropriate optimization/conversion for the mime-type switch ($type) { case 'image/jpeg': $png_size = 0; // if jpg2png conversion is enabled, and this image is in the wordpress media library if (ewww_image_optimizer_get_option('ewww_image_optimizer_jpg_to_png') && $gallery_type == 1 || !empty($_GET['ewww_convert'])) { // generate the filename for a PNG // if this is a resize version if ($converted) { // just change the file extension $pngfile = preg_replace('/\\.\\w+$/', '.png', $file); // if this is a full size image } else { // get a unique filename for the png image list($pngfile, $filenum) = ewww_image_optimizer_unique_filename($file, '.png'); } } else { // otherwise, set it to OFF $convert = false; $pngfile = ''; } // check for previous optimization, so long as the force flag is on and this isn't a new image that needs converting if (empty($_REQUEST['ewww_force']) && !($new && $convert)) { if ($results_msg = ewww_image_optimizer_check_table($file, $orig_size)) { return array($file, $results_msg, $converted, $original); } } if (ewww_image_optimizer_get_option('ewww_image_optimizer_cloud_jpg')) { list($file, $converted, $result, $new_size) = ewww_image_optimizer_cloud_optimizer($file, $type, $convert, $pngfile, 'image/png', $skip_lossy); if ($converted) { $converted = $filenum; ewww_image_optimizer_webp_create($file, $new_size, 'image/png', null); } else { ewww_image_optimizer_webp_create($file, $new_size, $type, null); } break; } if ($convert) { $tools = ewww_image_optimizer_path_check(true, true, false, true, ewww_image_optimizer_get_option('ewww_image_optimizer_png_lossy'), ewww_image_optimizer_get_option('ewww_image_optimizer_webp')); } else { $tools = ewww_image_optimizer_path_check(true, false, false, false, false, ewww_image_optimizer_get_option('ewww_image_optimizer_webp')); } // if jpegtran optimization is disabled if (ewww_image_optimizer_get_option('ewww_image_optimizer_disable_jpegtran')) { // store an appropriate message in $result $result = sprintf(__('%s is disabled', EWWW_IMAGE_OPTIMIZER_DOMAIN), 'jpegtran'); // otherwise, if we aren't skipping the utility verification and jpegtran doesn't exist } elseif (!$skip_jpegtran_check && !$tools['JPEGTRAN']) { // store an appropriate message in $result $result = sprintf(__('%s is missing', EWWW_IMAGE_OPTIMIZER_DOMAIN), '<em>jpegtran</em>'); // otherwise, things should be good, so... } else { // set the optimization process to ON $optimize = true; } // if optimization is turned ON if ($optimize && !ewww_image_optimizer_get_option('ewww_image_optimizer_cloud_jpg')) { $ewww_debug .= "attempting to optimize JPG...<br>"; // generate temporary file-names: $tempfile = $file . ".tmp"; //non-progressive jpeg $progfile = $file . ".prog"; // progressive jpeg // check to see if we are supposed to strip metadata (badly named) if (ewww_image_optimizer_get_option('ewww_image_optimizer_jpegtran_copy') && !$keep_metadata) { // don't copy metadata $copy_opt = 'none'; } else { // copy all the metadata $copy_opt = 'all'; } // run jpegtran - non-progressive exec("{$nice} " . $tools['JPEGTRAN'] . " -copy {$copy_opt} -optimize -outfile " . ewww_image_optimizer_escapeshellarg($tempfile) . " " . ewww_image_optimizer_escapeshellarg($file)); // run jpegtran - progressive exec("{$nice} " . $tools['JPEGTRAN'] . " -copy {$copy_opt} -optimize -progressive -outfile " . ewww_image_optimizer_escapeshellarg($progfile) . " " . ewww_image_optimizer_escapeshellarg($file)); if (is_file($tempfile)) { // check the filesize of the non-progressive JPG $non_size = filesize($tempfile); } else { $non_size = 0; } if (is_file($progfile)) { // check the filesize of the progressive JPG $prog_size = filesize($progfile); } else { $prog_size = 0; } $ewww_debug .= "optimized JPG (non-progresive) size: {$non_size}<br>"; $ewww_debug .= "optimized JPG (progresive) size: {$prog_size}<br>"; if ($non_size === false || $prog_size === false) { $result = __('Unable to write file', EWWW_IMAGE_OPTIMIZER_DOMAIN); $new_size = 0; } elseif (!$non_size || !$prog_size) { $result = __('Optimization failed', EWWW_IMAGE_OPTIMIZER_DOMAIN); $new_size = 0; } else { // if the progressive file is bigger if ($prog_size > $non_size) { // store the size of the non-progessive JPG $new_size = $non_size; if (is_file($progfile)) { // delete the progressive file unlink($progfile); } // if the progressive file is smaller or the same } else { // store the size of the progressive JPG $new_size = $prog_size; // replace the non-progressive with the progressive file rename($progfile, $tempfile); } } $ewww_debug .= "optimized JPG size: {$new_size}<br>"; // if the best-optimized is smaller than the original JPG, and we didn't create an empty JPG if ($orig_size > $new_size && $new_size != 0 && ewww_image_optimizer_mimetype($tempfile, 'i') == $type) { // replace the original with the optimized file rename($tempfile, $file); // store the results of the optimization $result = "{$orig_size} vs. {$new_size}"; // if the optimization didn't produce a smaller JPG } else { if (is_file($tempfile)) { // delete the optimized file unlink($tempfile); } // store the results $result = 'unchanged'; $new_size = $orig_size; } // if conversion and optimization are both turned OFF, finish the JPG processing } elseif (!$convert) { ewww_image_optimizer_webp_create($file, $orig_size, $type, $tools['WEBP']); break; } // if the conversion process is turned ON, or if this is a resize and the full-size was converted if ($convert && !ewww_image_optimizer_get_option('ewww_image_optimizer_cloud_jpg')) { $ewww_debug .= "attempting to convert JPG to PNG: {$pngfile} <br>"; if (empty($new_size)) { $new_size = $orig_size; } // retrieve version info for ImageMagick $convert_path = ewww_image_optimizer_find_binary('convert', 'i'); // convert the JPG to PNG if (!empty($convert_path)) { $ewww_debug .= "converting with ImageMagick<br>"; exec($convert_path . " " . ewww_image_optimizer_escapeshellarg($file) . " -strip " . ewww_image_optimizer_escapeshellarg($pngfile)); } elseif (ewww_image_optimizer_gd_support()) { $ewww_debug .= "converting with GD<br>"; imagepng(imagecreatefromjpeg($file), $pngfile); } // if lossy optimization is ON and full-size exclusion is not active if (ewww_image_optimizer_get_option('ewww_image_optimizer_png_lossy') && $tools['PNGQUANT'] && !$skip_lossy) { $ewww_debug .= "attempting lossy reduction<br>"; exec("{$nice} " . $tools['PNGQUANT'] . " " . ewww_image_optimizer_escapeshellarg($pngfile)); $quantfile = preg_replace('/\\.\\w+$/', '-fs8.png', $pngfile); if (file_exists($quantfile) && filesize($pngfile) > filesize($quantfile)) { $ewww_debug .= "lossy reduction is better: original - " . filesize($pngfile) . " vs. lossy - " . filesize($quantfile) . "<br>"; rename($quantfile, $pngfile); } elseif (file_exists($quantfile)) { $ewww_debug .= "lossy reduction is worse: original - " . filesize($pngfile) . " vs. lossy - " . filesize($quantfile) . "<br>"; unlink($quantfile); } else { $ewww_debug .= "pngquant did not produce any output<br>"; } } // if optipng isn't disabled if (!ewww_image_optimizer_get_option('ewww_image_optimizer_disable_optipng')) { // retrieve the optipng optimization level $optipng_level = ewww_image_optimizer_get_option('ewww_image_optimizer_optipng_level'); if (ewww_image_optimizer_get_option('ewww_image_optimizer_jpegtran_copy') && preg_match('/0.7/', ewww_image_optimizer_tool_found($tools['OPTIPNG'], 'o')) && !$keep_metadata) { $strip = '-strip all '; } else { $strip = ''; } // if the PNG file was created if (file_exists($pngfile)) { $ewww_debug .= "optimizing converted PNG with optipng<br>"; // run optipng on the new PNG exec("{$nice} " . $tools['OPTIPNG'] . " -o{$optipng_level} -quiet {$strip} " . ewww_image_optimizer_escapeshellarg($pngfile)); } } // if pngout isn't disabled if (!ewww_image_optimizer_get_option('ewww_image_optimizer_disable_pngout')) { // retrieve the pngout optimization level $pngout_level = ewww_image_optimizer_get_option('ewww_image_optimizer_pngout_level'); // if the PNG file was created if (file_exists($pngfile)) { $ewww_debug .= "optimizing converted PNG with pngout<br>"; // run pngout on the new PNG exec("{$nice} " . $tools['PNGOUT'] . " -s{$pngout_level} -q " . ewww_image_optimizer_escapeshellarg($pngfile)); } } if (is_file($pngfile)) { // find out the size of the new PNG file $png_size = filesize($pngfile); } else { $png_size = 0; } $ewww_debug .= "converted PNG size: {$png_size}<br>"; // if the PNG is smaller than the original JPG, and we didn't end up with an empty file if ($new_size > $png_size && $png_size != 0 && ewww_image_optimizer_mimetype($pngfile, 'i') == 'image/png') { $ewww_debug .= "converted PNG is better: {$png_size} vs. {$new_size}<br>"; // store the size of the converted PNG $new_size = $png_size; // check to see if the user wants the originals deleted if (ewww_image_optimizer_get_option('ewww_image_optimizer_delete_originals') == TRUE) { // delete the original JPG unlink($file); } // store the location of the PNG file $file = $pngfile; // let webp know what we're dealing with now $type = 'image/png'; // successful conversion and we store the increment $converted = $filenum; } else { $ewww_debug .= "converted PNG is no good<br>"; // otherwise delete the PNG $converted = FALSE; if (is_file($pngfile)) { unlink($pngfile); } } } ewww_image_optimizer_webp_create($file, $new_size, $type, $tools['WEBP']); break; case 'image/png': // png2jpg conversion is turned on, and the image is in the wordpress media library if ((ewww_image_optimizer_get_option('ewww_image_optimizer_png_to_jpg') || !empty($_GET['ewww_convert'])) && $gallery_type == 1 && !$skip_lossy) { $ewww_debug .= "PNG to JPG conversion turned on<br>"; // if the user set a fill background for transparency $background = ''; if ($background = ewww_image_optimizer_jpg_background()) { // set background color for GD $r = hexdec('0x' . strtoupper(substr($background, 0, 2))); $g = hexdec('0x' . strtoupper(substr($background, 2, 2))); $b = hexdec('0x' . strtoupper(substr($background, 4, 2))); // set the background flag for 'convert' $background = "-background " . '"' . "#{$background}" . '"'; } else { $r = ''; $g = ''; $b = ''; } // if the user manually set the JPG quality if ($quality = ewww_image_optimizer_jpg_quality()) { // set the quality for GD $gquality = $quality; // set the quality flag for 'convert' $cquality = "-quality {$quality}"; } else { $cquality = ''; $gquality = '92'; } // if this is a resize version if ($converted) { // just replace the file extension with a .jpg $jpgfile = preg_replace('/\\.\\w+$/', '.jpg', $file); // if this is a full version } else { // construct the filename for the new JPG list($jpgfile, $filenum) = ewww_image_optimizer_unique_filename($file, '.jpg'); } } else { $ewww_debug .= "PNG to JPG conversion turned off<br>"; // turn the conversion process OFF $convert = false; $jpgfile = ''; $r = null; $g = null; $b = null; $gquality = null; } // check for previous optimization, so long as the force flag is on and this isn't a new image that needs converting if (empty($_REQUEST['ewww_force']) && !($new && $convert)) { if ($results_msg = ewww_image_optimizer_check_table($file, $orig_size)) { return array($file, $results_msg, $converted, $original); } } if (ewww_image_optimizer_get_option('ewww_image_optimizer_cloud_png')) { list($file, $converted, $result, $new_size) = ewww_image_optimizer_cloud_optimizer($file, $type, $convert, $jpgfile, 'image/jpeg', $skip_lossy, array('r' => $r, 'g' => $g, 'b' => $b, 'quality' => $gquality)); if ($converted) { $converted = $filenum; ewww_image_optimizer_webp_create($file, $new_size, 'image/jpeg', null); } else { ewww_image_optimizer_webp_create($file, $new_size, $type, null); } break; } if ($convert) { $tools = ewww_image_optimizer_path_check(true, true, false, true, ewww_image_optimizer_get_option('ewww_image_optimizer_png_lossy'), ewww_image_optimizer_get_option('ewww_image_optimizer_webp')); } else { $tools = ewww_image_optimizer_path_check(false, true, false, true, ewww_image_optimizer_get_option('ewww_image_optimizer_png_lossy'), ewww_image_optimizer_get_option('ewww_image_optimizer_webp')); } // if pngout and optipng are disabled if (ewww_image_optimizer_get_option('ewww_image_optimizer_disable_optipng') && ewww_image_optimizer_get_option('ewww_image_optimizer_disable_pngout')) { // tell the user all PNG tools are disabled $result = __('png tools are disabled', EWWW_IMAGE_OPTIMIZER_DOMAIN); // if the utility checking is on, optipng is enabled, but optipng cannot be found } elseif (!$skip_optipng_check && !$tools['OPTIPNG'] && !ewww_image_optimizer_get_option('ewww_image_optimizer_disable_optipng')) { // tell the user optipng is missing $result = sprintf(__('%s is missing', EWWW_IMAGE_OPTIMIZER_DOMAIN), '<em>optipng</em>'); // if the utility checking is on, pngout is enabled, but pngout cannot be found } elseif (!$skip_pngout_check && !$tools['PNGOUT'] && !ewww_image_optimizer_get_option('ewww_image_optimizer_disable_pngout')) { // tell the user pngout is missing $result = sprintf(__('%s is missing', EWWW_IMAGE_OPTIMIZER_DOMAIN), '<em>pngout</em>'); } else { // turn optimization on if we made it through all the checks $optimize = true; } // if optimization is turned on if ($optimize) { // if lossy optimization is ON and full-size exclusion is not active if (ewww_image_optimizer_get_option('ewww_image_optimizer_png_lossy') && $tools['PNGQUANT'] && !$skip_lossy) { $ewww_debug .= "attempting lossy reduction<br>"; exec("{$nice} " . $tools['PNGQUANT'] . " " . ewww_image_optimizer_escapeshellarg($file)); $quantfile = preg_replace('/\\.\\w+$/', '-fs8.png', $file); if (file_exists($quantfile) && filesize($file) > filesize($quantfile) && ewww_image_optimizer_mimetype($quantfile, 'i') == $type) { $ewww_debug .= "lossy reduction is better: original - " . filesize($file) . " vs. lossy - " . filesize($quantfile) . "<br>"; rename($quantfile, $file); } elseif (file_exists($quantfile)) { $ewww_debug .= "lossy reduction is worse: original - " . filesize($file) . " vs. lossy - " . filesize($quantfile) . "<br>"; unlink($quantfile); } else { $ewww_debug .= "pngquant did not produce any output<br>"; } } $tempfile = $file . '.tmp.png'; copy($file, $tempfile); // if optipng is enabled if (!ewww_image_optimizer_get_option('ewww_image_optimizer_disable_optipng')) { // retrieve the optimization level for optipng $optipng_level = ewww_image_optimizer_get_option('ewww_image_optimizer_optipng_level'); if (ewww_image_optimizer_get_option('ewww_image_optimizer_jpegtran_copy') && preg_match('/0.7/', ewww_image_optimizer_tool_found($tools['OPTIPNG'], 'o')) && !$keep_metadata) { $strip = '-strip all '; } else { $strip = ''; } // run optipng on the PNG file exec("{$nice} " . $tools['OPTIPNG'] . " -o{$optipng_level} -quiet {$strip} " . ewww_image_optimizer_escapeshellarg($tempfile)); } // if pngout is enabled if (!ewww_image_optimizer_get_option('ewww_image_optimizer_disable_pngout')) { // retrieve the optimization level for pngout $pngout_level = ewww_image_optimizer_get_option('ewww_image_optimizer_pngout_level'); // run pngout on the PNG file exec("{$nice} " . $tools['PNGOUT'] . " -s{$pngout_level} -q " . ewww_image_optimizer_escapeshellarg($tempfile)); } // retrieve the filesize of the temporary PNG $new_size = filesize($tempfile); // if the new PNG is smaller if ($orig_size > $new_size && $new_size != 0 && ewww_image_optimizer_mimetype($tempfile, 'i') == $type) { // replace the original with the optimized file rename($tempfile, $file); // store the results of the optimization $result = "{$orig_size} vs. {$new_size}"; // if the optimization didn't produce a smaller PNG } else { if (is_file($tempfile)) { // delete the optimized file unlink($tempfile); } // store the results $result = 'unchanged'; $new_size = $orig_size; } // if conversion and optimization are both disabled we are done here } elseif (!$convert) { $ewww_debug .= "calling webp, but neither convert or optimize<br>"; ewww_image_optimizer_webp_create($file, $orig_size, $type, $tools['WEBP']); break; } // flush the cache for filesize clearstatcache(); // retrieve the new filesize of the PNG $new_size = filesize($file); // if conversion is on and the PNG doesn't have transparency or the user set a background color to replace transparency if ($convert && (!ewww_image_optimizer_png_alpha($file) || ewww_image_optimizer_jpg_background())) { $ewww_debug .= "attempting to convert PNG to JPG: {$jpgfile} <br>"; if (empty($new_size)) { $new_size = $orig_size; } // retrieve version info for ImageMagick $convert_path = ewww_image_optimizer_find_binary('convert', 'i'); // convert the PNG to a JPG with all the proper options if (!empty($convert_path)) { $ewww_debug .= "converting with ImageMagick<br>"; $ewww_debug .= "using command: {$convert_path} {$background} -flatten {$cquality} {$file} {$jpgfile}"; exec("{$convert_path} {$background} -flatten {$cquality} " . ewww_image_optimizer_escapeshellarg($file) . " " . ewww_image_optimizer_escapeshellarg($jpgfile)); } elseif (ewww_image_optimizer_gd_support()) { $ewww_debug .= "converting with GD<br>"; // retrieve the data from the PNG $input = imagecreatefrompng($file); // retrieve the dimensions of the PNG list($width, $height) = getimagesize($file); // create a new image with those dimensions $output = imagecreatetruecolor($width, $height); if ($r === '') { $r = 255; $g = 255; $b = 255; } // allocate the background color $rgb = imagecolorallocate($output, $r, $g, $b); // fill the new image with the background color imagefilledrectangle($output, 0, 0, $width, $height, $rgb); // copy the original image to the new image imagecopy($output, $input, 0, 0, 0, 0, $width, $height); // output the JPG with the quality setting imagejpeg($output, $jpgfile, $gquality); } if (is_file($jpgfile)) { // retrieve the filesize of the new JPG $jpg_size = filesize($jpgfile); $ewww_debug .= "converted JPG filesize: {$jpg_size}<br>"; } else { $jpg_size = 0; $ewww_debug .= "unable to convert to JPG<br>"; } // next we need to optimize that JPG if jpegtran is enabled if (!ewww_image_optimizer_get_option('ewww_image_optimizer_disable_jpegtran') && file_exists($jpgfile)) { // generate temporary file-names: $tempfile = $jpgfile . ".tmp"; //non-progressive jpeg $progfile = $jpgfile . ".prog"; // progressive jpeg // check to see if we are supposed to strip metadata (badly named) if (ewww_image_optimizer_get_option('ewww_image_optimizer_jpegtran_copy') && !$keep_metadata) { // don't copy metadata $copy_opt = 'none'; } else { // copy all the metadata $copy_opt = 'all'; } // run jpegtran - non-progressive exec("{$nice} " . $tools['JPEGTRAN'] . " -copy {$copy_opt} -optimize -outfile " . ewww_image_optimizer_escapeshellarg($tempfile) . " " . ewww_image_optimizer_escapeshellarg($jpgfile)); // run jpegtran - progressive exec("{$nice} " . $tools['JPEGTRAN'] . " -copy {$copy_opt} -optimize -progressive -outfile " . ewww_image_optimizer_escapeshellarg($progfile) . " " . ewww_image_optimizer_escapeshellarg($jpgfile)); if (is_file($tempfile)) { // check the filesize of the non-progressive JPG $non_size = filesize($tempfile); $ewww_debug .= "non-progressive JPG filesize: {$non_size}<br>"; } else { $non_size = 0; } if (is_file($progfile)) { // check the filesize of the progressive JPG $prog_size = filesize($progfile); $ewww_debug .= "progressive JPG filesize: {$prog_size}<br>"; } else { $prog_size = 0; } // if the progressive file is bigger if ($prog_size > $non_size) { // store the size of the non-progessive JPG $opt_jpg_size = $non_size; if (is_file($progfile)) { // delete the progressive file unlink($progfile); } $ewww_debug .= "keeping non-progressive JPG<br>"; // if the progressive file is smaller or the same } else { // store the size of the progressive JPG $opt_jpg_size = $prog_size; // replace the non-progressive with the progressive file rename($progfile, $tempfile); $ewww_debug .= "keeping progressive JPG<br>"; } // if the best-optimized is smaller than the original JPG, and we didn't create an empty JPG if ($jpg_size > $opt_jpg_size && $opt_jpg_size != 0) { // replace the original with the optimized file rename($tempfile, $jpgfile); // store the size of the optimized JPG $jpg_size = $opt_jpg_size; $ewww_debug .= "optimized JPG was smaller than un-optimized version<br>"; // if the optimization didn't produce a smaller JPG } elseif (is_file($tempfile)) { // delete the optimized file unlink($tempfile); } } $ewww_debug .= "converted JPG size: {$jpg_size}<br>"; // if the new JPG is smaller than the original PNG if ($new_size > $jpg_size && $jpg_size != 0 && ewww_image_optimizer_mimetype($jpgfile, 'i') == 'image/jpeg') { // store the size of the JPG as the new filesize $new_size = $jpg_size; // if the user wants originals delted after a conversion if (ewww_image_optimizer_get_option('ewww_image_optimizer_delete_originals') == TRUE) { // delete the original PNG unlink($file); } // update the $file location to the new JPG $file = $jpgfile; // let webp know what we're dealing with now $type = 'image/jpeg'; // successful conversion, so we store the increment $converted = $filenum; } else { $converted = FALSE; if (is_file($jpgfile)) { // otherwise delete the new JPG unlink($jpgfile); } } } ewww_image_optimizer_webp_create($file, $new_size, $type, $tools['WEBP']); break; case 'image/gif': // if gif2png is turned on, and the image is in the wordpress media library if (ewww_image_optimizer_get_option('ewww_image_optimizer_gif_to_png') && $gallery_type == 1 || !empty($_GET['ewww_convert'])) { // generate the filename for a PNG // if this is a resize version if ($converted) { // just change the file extension $pngfile = preg_replace('/\\.\\w+$/', '.png', $file); // if this is the full version } else { // construct the filename for the new PNG list($pngfile, $filenum) = ewww_image_optimizer_unique_filename($file, '.png'); } } else { // turn conversion OFF $convert = false; $pngfile = ''; } // check for previous optimization, so long as the force flag is on and this isn't a new image that needs converting if (empty($_REQUEST['ewww_force']) && !($new && $convert)) { if ($results_msg = ewww_image_optimizer_check_table($file, $orig_size)) { return array($file, $results_msg, $converted, $original); } } if (ewww_image_optimizer_get_option('ewww_image_optimizer_cloud_gif')) { list($file, $converted, $result, $new_size) = ewww_image_optimizer_cloud_optimizer($file, $type, $convert, $pngfile, 'image/png', $skip_lossy); if ($converted) { $converted = $filenum; ewww_image_optimizer_webp_create($file, $new_size, 'image/png', null); } break; } if ($convert) { $tools = ewww_image_optimizer_path_check(false, true, true, true, ewww_image_optimizer_get_option('ewww_image_optimizer_png_lossy'), ewww_image_optimizer_get_option('ewww_image_optimizer_webp')); } else { $tools = ewww_image_optimizer_path_check(false, false, true, false, false, false); } // if gifsicle is disabled if (ewww_image_optimizer_get_option('ewww_image_optimizer_disable_gifsicle')) { // return an appropriate message $result = sprintf(__('%s is disabled', EWWW_IMAGE_OPTIMIZER_DOMAIN), 'gifsicle'); // if utility checking is on, and gifsicle is not installed } elseif (!$skip_gifsicle_check && !$tools['GIFSICLE']) { // return an appropriate message $result = sprintf(__('%s is missing', EWWW_IMAGE_OPTIMIZER_DOMAIN), '<em>gifsicle</em>'); } else { // otherwise, turn optimization ON $optimize = true; } // if optimization is turned ON if ($optimize) { $tempfile = $file . '.tmp'; //temporary GIF output // run gifsicle on the GIF exec("{$nice} " . $tools['GIFSICLE'] . " -b -O3 --careful -o {$tempfile} " . ewww_image_optimizer_escapeshellarg($file)); if (file_exists($tempfile)) { // retrieve the filesize of the temporary GIF $new_size = filesize($tempfile); // if the new GIF is smaller if ($orig_size > $new_size && $new_size != 0 && ewww_image_optimizer_mimetype($tempfile, 'i') == $type) { // replace the original with the optimized file rename($tempfile, $file); // store the results of the optimization $result = "{$orig_size} vs. {$new_size}"; // if the optimization didn't produce a smaller GIF } else { if (is_file($tempfile)) { // delete the optimized file unlink($tempfile); } // store the results $result = 'unchanged'; $new_size = $orig_size; } } // if conversion and optimization are both turned OFF, we are done here } elseif (!$convert) { break; } // flush the cache for filesize clearstatcache(); // get the new filesize for the GIF $new_size = filesize($file); // if conversion is ON and the GIF isn't animated if ($convert && !ewww_image_optimizer_is_animated($file)) { if (empty($new_size)) { $new_size = $orig_size; } // if optipng is enabled if (!ewww_image_optimizer_get_option('ewww_image_optimizer_disable_optipng') && $tools['OPTIPNG']) { // retrieve the optipng optimization level $optipng_level = ewww_image_optimizer_get_option('ewww_image_optimizer_optipng_level'); if (ewww_image_optimizer_get_option('ewww_image_optimizer_jpegtran_copy') && preg_match('/0.7/', ewww_image_optimizer_tool_found($tools['OPTIPNG'], 'o')) && !$keep_metadata) { $strip = '-strip all '; } else { $strip = ''; } // run optipng on the GIF file exec("{$nice} " . $tools['OPTIPNG'] . " -out " . ewww_image_optimizer_escapeshellarg($pngfile) . " -o{$optipng_level} -quiet {$strip} " . ewww_image_optimizer_escapeshellarg($file)); } // if pngout is enabled if (!ewww_image_optimizer_get_option('ewww_image_optimizer_disable_pngout') && $tools['PNGOUT']) { // retrieve the pngout optimization level $pngout_level = ewww_image_optimizer_get_option('ewww_image_optimizer_pngout_level'); // if $pngfile exists (which means optipng was run already) if (file_exists($pngfile)) { // run pngout on the PNG file exec("{$nice} " . $tools['PNGOUT'] . " -s{$pngout_level} -q " . ewww_image_optimizer_escapeshellarg($pngfile)); } else { // run pngout on the GIF file exec("{$nice} " . $tools['PNGOUT'] . " -s{$pngout_level} -q " . ewww_image_optimizer_escapeshellarg($file) . " " . ewww_image_optimizer_escapeshellarg($pngfile)); } } // if a PNG file was created if (file_exists($pngfile)) { // retrieve the filesize of the PNG $png_size = filesize($pngfile); // if the new PNG is smaller than the original GIF if ($new_size > $png_size && $png_size != 0 && ewww_image_optimizer_mimetype($pngfile, 'i') == 'image/png') { // store the PNG size as the new filesize $new_size = $png_size; // if the user wants original GIFs deleted after successful conversion if (ewww_image_optimizer_get_option('ewww_image_optimizer_delete_originals') == TRUE) { // delete the original GIF unlink($file); } // update the $file location with the new PNG $file = $pngfile; // let webp know what we're dealing with now $type = 'image/png'; // normally this would be at the end of the section, but we only want to do webp if the image was successfully converted to a png ewww_image_optimizer_webp_create($file, $new_size, $type, $tools['WEBP']); // successful conversion (for now), so we store the increment $converted = $filenum; } else { $converted = FALSE; if (is_file($pngfile)) { unlink($pngfile); } } } } break; default: // if not a JPG, PNG, or GIF, tell the user we don't work with strangers return array($file, __('Unknown type: ' . $type, EWWW_IMAGE_OPTIMIZER_DOMAIN), $converted, $original); } // if their cloud api license limit has been exceeded if ($result == 'exceeded') { return array($file, __('License exceeded', EWWW_IMAGE_OPTIMIZER_DOMAIN), $converted, $original); } if (!empty($new_size)) { $results_msg = ewww_image_optimizer_update_table($file, $new_size, $orig_size, $new); ewwwio_memory(__FUNCTION__); return array($file, $results_msg, $converted, $original); } ewwwio_memory(__FUNCTION__); // otherwise, send back the filename, the results (some sort of error message), the $converted flag, and the name of the original image return array($file, $result, $converted, $original); }