function ewww_image_optimizer_webp_create($file, $orig_size, $type, $tool)
{
global $ewww_debug;
$ewww_debug .= '<b>ewww_image_optimizer_webp_create()</b><br>';
// change the file extension
$webpfile = $file . '.webp';
if (file_exists($webpfile) || !ewww_image_optimizer_get_option('ewww_image_optimizer_webp')) {
return;
}
if (empty($tool)) {
ewww_image_optimizer_cloud_optimizer($file, $type, false, $webpfile, 'image/webp');
} else {
// check to see if 'nice' exists
$nice = ewww_image_optimizer_find_binary('nice', 'n');
switch ($type) {
case 'image/jpeg':
exec("{$nice} " . $tool . " -q 85 -quiet " . ewww_image_optimizer_escapeshellarg($file) . " -o " . ewww_image_optimizer_escapeshellarg($webpfile) . ' 2>&1', $cli_output);
break;
case 'image/png':
exec("{$nice} " . $tool . " -lossless -quiet " . ewww_image_optimizer_escapeshellarg($file) . " -o " . ewww_image_optimizer_escapeshellarg($webpfile) . ' 2>&1', $cli_output);
break;
}
}
if (file_exists($webpfile) && $orig_size < filesize($webpfile)) {
$ewww_debug .= 'webp file was too big, deleting<br>';
unlink($webpfile);
}
ewwwio_memory(__FUNCTION__);
}
/**
* 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 $converted tells us if this is a resize and the full image was converted to a new format
* @returns array
*/
function ewww_image_optimizer($file, $gallery_type, $converted, $new, $fullsize = false)
{
// global $wpdb;
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();
}
// 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 <span class='code'>%s</span>", EWWW_IMAGE_OPTIMIZER_DOMAIN), $file);
$ewww_debug .= "file doesn't appear to exist: {$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(__("<span class='code'>%s</span> is not writable", EWWW_IMAGE_OPTIMIZER_DOMAIN), $file);
$ewww_debug .= "couldn't write to the 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 (!$type) {
//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 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')) {
$skip_gifsicle_check = true;
}
// if the full-size image was converted
if ($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>";
// initialize $new_size with the original size
$new_size = $orig_size;
// 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['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['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', $fullsize);
if ($converted) {
$converted = $filenum;
}
break;
}
if ($convert) {
$tools = ewww_image_optimizer_path_check(true, true, false, true);
} else {
$tools = ewww_image_optimizer_path_check(true, false, false, false);
}
// 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') == TRUE) {
// 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 && $new_size != 0) {
// replace the original with the optimized file
rename($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) {
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>";
// 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') && $tools['PNGQUANT'] && !$fullsize) {
$ewww_debug .= "attempting lossy reduction<br>";
exec("{$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'))) {
$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) {
$ewww_debug .= "converted PNG is better: {$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;
// 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);
}
}
}
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') && $gallery_type == 1 || !empty($_GET['convert'])) {
$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['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', $fullsize, array('r' => $r, 'g' => $g, 'b' => $b, 'quality' => $gquality));
if ($converted) {
$converted = $filenum;
}
break;
}
if ($convert) {
$tools = ewww_image_optimizer_path_check(true, true, false, true);
} else {
$tools = ewww_image_optimizer_path_check(false, true, false, true);
}
// 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') && $tools['PNGQUANT'] && !$fullsize) {
$ewww_debug .= "attempting lossy reduction<br>";
exec("{$nice} " . $tools['PNGQUANT'] . " " . ewww_image_optimizer_escapeshellarg($file));
$quantfile = preg_replace('/\\.\\w+$/', '-fs8.png', $file);
if (file_exists($quantfile) && filesize($file) > filesize($quantfile)) {
$ewww_debug .= "lossy reduction is better: original - " . filesize($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>";
}
}
// 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'))) {
$strip = '-strip all ';
} else {
$strip = '';
}
// run optipng on the PNG file
exec("{$nice} " . $tools['OPTIPNG'] . " -o{$optipng_level} -quiet {$strip} " . ewww_image_optimizer_escapeshellarg($file));
}
// if pngout is enabled
if (!ewww_image_optimizer_get_option('ewww_image_optimizer_disable_pngout')) {
// 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($file));
}
// if conversion and optimization are both disabled we are done here
} elseif (!$convert) {
$ewww_debug .= "not going to process as we can neither convert or optimize<br>";
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>";
// 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') == TRUE) {
// 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) {
// 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;
// successful conversion, so we store the increment
$converted = $filenum;
} else {
$converted = FALSE;
if (is_file($jpgfile)) {
// otherwise delete the new JPG
unlink($jpgfile);
}
}
}
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['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['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', $fullsize);
if ($converted) {
$converted = $filenum;
}
break;
}
if ($convert) {
$tools = ewww_image_optimizer_path_check(false, true, true, true);
} else {
$tools = ewww_image_optimizer_path_check(false, false, true, 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 && $new_size != 0) {
// replace the original with the optimized file
rename($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 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'))) {
$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) {
// 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;
// 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, $new);
return array($file, $results_msg, $converted, $original);
}
// 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, $original);
}
function ewww_image_optimizer_webp_create($file, $orig_size, $type, $tool, $recreate = false)
{
ewwwio_debug_message('<b>' . __FUNCTION__ . '()</b>');
// change the file extension
$webpfile = $file . '.webp';
if (!ewww_image_optimizer_get_option('ewww_image_optimizer_webp')) {
return;
} elseif (is_file($webpfile) && empty($_REQUEST['ewww_force']) && !$recreate) {
ewwwio_debug_message('webp file exists, not forcing or recreating');
return;
}
if (empty($tool)) {
ewww_image_optimizer_cloud_optimizer($file, $type, false, $webpfile, 'image/webp');
} else {
// check to see if 'nice' exists
$nice = ewww_image_optimizer_find_nix_binary('nice', 'n');
switch ($type) {
case 'image/jpeg':
exec("{$nice} " . $tool . " -q 85 -quiet " . ewww_image_optimizer_escapeshellarg($file) . " -o " . ewww_image_optimizer_escapeshellarg($webpfile) . ' 2>&1', $cli_output);
break;
case 'image/png':
exec("{$nice} " . $tool . " -lossless -quiet " . ewww_image_optimizer_escapeshellarg($file) . " -o " . ewww_image_optimizer_escapeshellarg($webpfile) . ' 2>&1', $cli_output);
break;
}
}
$webp_size = ewww_image_optimizer_filesize($webpfile);
ewwwio_debug_message("webp is {$webp_size} vs. {$type} is {$orig_size}");
if (is_file($webpfile) && $orig_size < $webp_size) {
ewwwio_debug_message('webp file was too big, deleting');
unlink($webpfile);
} elseif (is_file($webpfile)) {
// Set correct file permissions
$stat = stat(dirname($webpfile));
$perms = $stat['mode'] & 0666;
//same permissions as parent folder, strip off the executable bits
@chmod($webpfile, $perms);
}
ewwwio_memory(__FUNCTION__);
}
