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223 lines (187 loc) · 5.95 KB
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<?php
/*
* Tiny Compress Images - WordPress plugin.
* Copyright (C) 2015-2018 Tinify B.V.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
abstract class Tiny_Compress {
const KEY_MISSING = 'Register an account or provide an API key first';
const FILE_MISSING = 'File does not exist';
const WRITE_ERROR = 'No permission to write to file';
protected $after_compress_callback;
public static function create( $api_key, $after_compress_callback = null ) {
if ( Tiny_PHP::client_supported() ) {
$class = 'Tiny_Compress_Client';
} elseif ( Tiny_PHP::fopen_available() ) {
$class = 'Tiny_Compress_Fopen';
} else {
throw new Tiny_Exception(
'No HTTP client is available (cURL or fopen)',
'NoHttpClient'
);
}
return new $class( $api_key, $after_compress_callback );
}
/* Based on pricing April 2016. */
public static function estimate_cost( $compressions, $compressions_used ) {
return round(
self::compression_cost( $compressions + $compressions_used ) -
self::compression_cost( $compressions_used ),
2
);
}
protected function __construct( $after_compress_callback ) {
$this->after_compress_callback = $after_compress_callback;
}
abstract public function can_create_key();
abstract public function get_compression_count();
abstract public function get_remaining_credits();
abstract public function get_paying_state();
abstract public function get_email_address();
abstract public function get_key();
public function limit_reached() {
return $this->get_remaining_credits() === 0;
}
public function get_status() {
if ( $this->get_key() == null ) {
return (object) array(
'ok' => false,
'message' => self::KEY_MISSING,
);
}
$result = false;
$message = null;
try {
$result = $this->validate();
} catch ( Tiny_Exception $err ) {
if ( $err->get_status() == 404 ) {
$message = 'The key that you have entered is not valid';
} else {
list($message) = explode( ' (HTTP', $err->getMessage(), 2 );
}
}
$this->call_after_compress_callback();
return (object) array(
'ok' => $result,
'message' => $message,
);
}
/**
* Compresses a single file
*
* @param string $file
* @param array $resize_opts
* @param array $preserve_opts
* @param array{ string } conversion options
* @return void
*/
public function compress_file(
$file,
$resize_opts = array(),
$preserve_opts = array(),
$convert_to = array()
) {
if ( $this->get_key() == null ) {
// phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped -- not used in output
throw new Tiny_Exception( self::KEY_MISSING, 'KeyError' );
}
if ( ! file_exists( $file ) ) {
// phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped -- not used in output
throw new Tiny_Exception( self::FILE_MISSING, 'FileError' );
}
if ( ! is_writable( $file ) ) {
// phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped -- not used in output
throw new Tiny_Exception( self::WRITE_ERROR, 'FileError' );
}
if ( ! $this->needs_resize( $file, $resize_opts ) ) {
$resize_opts = false;
}
try {
$file_data = file_get_contents( $file );
list($output, $details, $convert_output ) = $this->compress(
$file_data,
$resize_opts,
$preserve_opts,
$convert_to
);
} catch ( Tiny_Exception $err ) {
$this->call_after_compress_callback();
throw $err;
}
try {
file_put_contents( $file, $output );
} catch ( Exception $e ) {
throw new Tiny_Exception( esc_html( $e->getMessage() ), 'FileError' );
}
if ( $convert_output ) {
$converted_filepath = Tiny_Helpers::replace_file_extension(
$details['convert']['type'],
$file
);
try {
file_put_contents( $converted_filepath, $convert_output );
} catch ( Exception $e ) {
throw new Tiny_Exception( esc_html( $e->getMessage() ), 'FileError' );
}
$details['convert']['path'] = $converted_filepath;
}
if ( $resize_opts ) {
$details['output']['resized'] = true;
}
$this->call_after_compress_callback();
return $details;
}
abstract protected function validate();
abstract protected function compress(
$input,
$resize_options,
$preserve_options,
$convert_to
);
protected static function identifier() {
return 'WordPress/' . Tiny_Plugin::wp_version() . ' Plugin/' . Tiny_Plugin::version();
}
private function call_after_compress_callback() {
if ( $this->after_compress_callback ) {
call_user_func( $this->after_compress_callback, $this );
}
}
private static function needs_resize( $file, $resize_options ) {
if ( ! $resize_options ) {
return false;
}
list($width, $height) = getimagesize( $file );
$should_resize_width = isset( $resize_options['width'] ) &&
$width > $resize_options['width'];
$should_resize_height = isset( $resize_options['height'] ) &&
$height > $resize_options['height'];
return $should_resize_width || $should_resize_height;
}
private static function compression_cost( $total ) {
$cost = 0;
if ( $total > 10000 ) {
$compressions = $total - 10000;
$cost += $compressions * 0.002;
$total -= $compressions;
}
if ( $total > 500 ) {
$compressions = $total - 500;
$cost += $compressions * 0.009;
$total -= $compressions;
}
return $cost;
}
}