WordPressを読む　93-1 /blog/wp-admin/includes/plugin.php 1

2014/12/04

/blog/wp-admin/includes/plugin.php

<?php
/**
 * WordPress Plugin Administration API
 *
 * @package WordPress
 * @subpackage Administration
 */

/**
 * Parse the plugin contents to retrieve plugin's metadata.
 *
 * The metadata of the plugin's data searches for the following in the plugin's
 * header. All plugin data must be on its own line. For plugin description, it
 * must not have any newlines or only parts of the description will be displayed
 * and the same goes for the plugin data. The below is formatted for printing.
 *
 * <code>
 * /*
 * Plugin Name: Name of Plugin
 * Plugin URI: Link to plugin information
 * Description: Plugin Description
 * Author: Plugin author's name
 * Author URI: Link to the author's web site
 * Version: Must be set in the plugin for WordPress 2.3+
 * Text Domain: Optional. Unique identifier, should be same as the one used in
 *		plugin_text_domain()
 * Domain Path: Optional. Only useful if the translations are located in a
 *		folder above the plugin's base path. For example, if .mo files are
 *		located in the locale folder then Domain Path will be "/locale/" and
 *		must have the first slash. Defaults to the base folder the plugin is
 *		located in.
 * Network: Optional. Specify "Network: true" to require that a plugin is activated
 *		across all sites in an installation. This will prevent a plugin from being
 *		activated on a single site when Multisite is enabled.
 *  * / # Remove the space to close comment
 * 
 *
 * Plugin data returned array contains the following:
 *		'Name' - Name of the plugin, must be unique.
 *		'Title' - Title of the plugin and the link to the plugin's web site.
 *		'Description' - Description of what the plugin does and/or notes
 *		from the author.
 *		'Author' - The author's name
 *		'AuthorURI' - The authors web site address.
 *		'Version' - The plugin version number.
 *		'PluginURI' - Plugin web site address.
 *		'TextDomain' - Plugin's text domain for localization.
 *		'DomainPath' - Plugin's relative directory path to .mo files.
 *		'Network' - Boolean. Whether the plugin can only be activated network wide.
 *
 * Some users have issues with opening large files and manipulating the contents
 * for want is usually the first 1kiB or 2kiB. This function stops pulling in
 * the plugin contents when it has all of the required plugin data.
 *
 * The first 8kiB of the file will be pulled in and if the plugin data is not
 * within that first 8kiB, then the plugin author should correct their plugin
 * and move the plugin data headers to the top.
 *
 * The plugin file is assumed to have permissions to allow for scripts to read
 * the file. This is not checked however and the file is only opened for
 * reading.
 *
 * @link http://trac.wordpress.org/ticket/5651 Previous Optimizations.
 * @link http://trac.wordpress.org/ticket/7372 Further and better Optimizations.
 * @since 1.5.0
 *
 * @param string $plugin_file Path to the plugin file
 * @param bool $markup Optional. If the returned data should have HTML markup applied. Defaults to true.
 * @param bool $translate Optional. If the returned data should be translated. Defaults to true.
 * @return array See above for description.
 */
function get_plugin_data( $plugin_file, $markup = true, $translate = true ) {

	$default_headers = array(
		'Name' => 'Plugin Name',
		'PluginURI' => 'Plugin URI',
		'Version' => 'Version',
		'Description' => 'Description',
		'Author' => 'Author',
		'AuthorURI' => 'Author URI',
		'TextDomain' => 'Text Domain',
		'DomainPath' => 'Domain Path',
		'Network' => 'Network',
		// Site Wide Only is deprecated in favor of Network.
		'_sitewide' => 'Site Wide Only',
	);

	$plugin_data = get_file_data( $plugin_file, $default_headers, 'plugin' );

	// Site Wide Only is the old header for Network
	if ( ! $plugin_data['Network'] && $plugin_data['_sitewide'] ) {
		_deprecated_argument( __FUNCTION__, '3.0', sprintf( __( 'The <code>%1$s</code> plugin header is deprecated. Use <code>%2$s</code> instead.' ), 'Site Wide Only: true', 'Network: true' ) );
		$plugin_data['Network'] = $plugin_data['_sitewide'];
	}
	$plugin_data['Network'] = ( 'true' == strtolower( $plugin_data['Network'] ) );
	unset( $plugin_data['_sitewide'] );

	if ( $markup || $translate ) {
		$plugin_data = _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup, $translate );
	} else {
		$plugin_data['Title']      = $plugin_data['Name'];
		$plugin_data['AuthorName'] = $plugin_data['Author'];
	}

	return $plugin_data;
}

/**
 * Sanitizes plugin data, optionally adds markup, optionally translates.
 *
 * @since 2.7.0
 * @access private
 * @see get_plugin_data()
 */
function _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup = true, $translate = true ) {

	// Sanitize the plugin filename to a WP_PLUGIN_DIR relative path
	$plugin_file = plugin_basename( $plugin_file );

	// Translate fields
	if ( $translate ) {
		if ( $textdomain = $plugin_data['TextDomain'] ) {
			if ( $plugin_data['DomainPath'] )
				load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) . $plugin_data['DomainPath'] );
			else
				load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) );
		} elseif ( in_array( basename( $plugin_file ), array( 'hello.php', 'akismet.php' ) ) ) {
			$textdomain = 'default';
		}
		if ( $textdomain ) {
			foreach ( array( 'Name', 'PluginURI', 'Description', 'Author', 'AuthorURI', 'Version' ) as $field )
				$plugin_data[ $field ] = translate( $plugin_data[ $field ], $textdomain );
		}
	}

	// Sanitize fields
	$allowed_tags = $allowed_tags_in_links = array(
		'abbr'    => array( 'title' => true ),
		'acronym' => array( 'title' => true ),
		'code'    => true,
		'em'      => true,
		'strong'  => true,
	);
	$allowed_tags['a'] = array( 'href' => true, 'title' => true );

	// Name is marked up inside <a> tags. Don't allow these.
	// Author is too, but some plugins have used <a> here (omitting Author URI).
	$plugin_data['Name']        = wp_kses( $plugin_data['Name'],        $allowed_tags_in_links );
	$plugin_data['Author']      = wp_kses( $plugin_data['Author'],      $allowed_tags );

	$plugin_data['Description'] = wp_kses( $plugin_data['Description'], $allowed_tags );
	$plugin_data['Version']     = wp_kses( $plugin_data['Version'],     $allowed_tags );

	$plugin_data['PluginURI']   = esc_url( $plugin_data['PluginURI'] );
	$plugin_data['AuthorURI']   = esc_url( $plugin_data['AuthorURI'] );

	$plugin_data['Title']      = $plugin_data['Name'];
	$plugin_data['AuthorName'] = $plugin_data['Author'];

	// Apply markup
	if ( $markup ) {
		if ( $plugin_data['PluginURI'] && $plugin_data['Name'] )
			$plugin_data['Title'] = '<a href="' . $plugin_data['PluginURI'] . '">' . $plugin_data['Name'] . '</a>';

		if ( $plugin_data['AuthorURI'] && $plugin_data['Author'] )
			$plugin_data['Author'] = '<a href="' . $plugin_data['AuthorURI'] . '">' . $plugin_data['Author'] . '</a>';

		$plugin_data['Description'] = wptexturize( $plugin_data['Description'] );

		if ( $plugin_data['Author'] )
			$plugin_data['Description'] .= ' <cite>' . sprintf( __('By %s.'), $plugin_data['Author'] ) . '</cite>';
	}

	return $plugin_data;
}

/**
 * Get a list of a plugin's files.
 *
 * @since 2.8.0
 *
 * @param string $plugin Plugin ID
 * @return array List of files relative to the plugin root.
 */
function get_plugin_files($plugin) {
	$plugin_file = WP_PLUGIN_DIR . '/' . $plugin;
	$dir = dirname($plugin_file);
	$plugin_files = array($plugin);
	if ( is_dir($dir) && $dir != WP_PLUGIN_DIR ) {
		$plugins_dir = @ opendir( $dir );
		if ( $plugins_dir ) {
			while (($file = readdir( $plugins_dir ) ) !== false ) {
				if ( substr($file, 0, 1) == '.' )
					continue;
				if ( is_dir( $dir . '/' . $file ) ) {
					$plugins_subdir = @ opendir( $dir . '/' . $file );
					if ( $plugins_subdir ) {
						while (($subfile = readdir( $plugins_subdir ) ) !== false ) {
							if ( substr($subfile, 0, 1) == '.' )
								continue;
							$plugin_files[] = plugin_basename("$dir/$file/$subfile");
						}
						@closedir( $plugins_subdir );
					}
				} else {
					if ( plugin_basename("$dir/$file") != $plugin )
						$plugin_files[] = plugin_basename("$dir/$file");
				}
			}
			@closedir( $plugins_dir );
		}
	}

	return $plugin_files;
}

/**
 * Check the plugins directory and retrieve all plugin files with plugin data.
 *
 * WordPress only supports plugin files in the base plugins directory
 * (wp-content/plugins) and in one directory above the plugins directory
 * (wp-content/plugins/my-plugin). The file it looks for has the plugin data and
 * must be found in those two locations. It is recommended that do keep your
 * plugin files in directories.
 *
 * The file with the plugin data is the file that will be included and therefore
 * needs to have the main execution for the plugin. This does not mean
 * everything must be contained in the file and it is recommended that the file
 * be split for maintainability. Keep everything in one file for extreme
 * optimization purposes.
 *
 * @since 1.5.0
 *
 * @param string $plugin_folder Optional. Relative path to single plugin folder.
 * @return array Key is the plugin file path and the value is an array of the plugin data.
 */
function get_plugins($plugin_folder = '') {

	if ( ! $cache_plugins = wp_cache_get('plugins', 'plugins') )
		$cache_plugins = array();

	if ( isset($cache_plugins[ $plugin_folder ]) )
		return $cache_plugins[ $plugin_folder ];

	$wp_plugins = array ();
	$plugin_root = WP_PLUGIN_DIR;
	if ( !empty($plugin_folder) )
		$plugin_root .= $plugin_folder;

	// Files in wp-content/plugins directory
	$plugins_dir = @ opendir( $plugin_root);
	$plugin_files = array();
	if ( $plugins_dir ) {
		while (($file = readdir( $plugins_dir ) ) !== false ) {
			if ( substr($file, 0, 1) == '.' )
				continue;
			if ( is_dir( $plugin_root.'/'.$file ) ) {
				$plugins_subdir = @ opendir( $plugin_root.'/'.$file );
				if ( $plugins_subdir ) {
					while (($subfile = readdir( $plugins_subdir ) ) !== false ) {
						if ( substr($subfile, 0, 1) == '.' )
							continue;
						if ( substr($subfile, -4) == '.php' )
							$plugin_files[] = "$file/$subfile";
					}
					closedir( $plugins_subdir );
				}
			} else {
				if ( substr($file, -4) == '.php' )
					$plugin_files[] = $file;
			}
		}
		closedir( $plugins_dir );
	}

	if ( empty($plugin_files) )
		return $wp_plugins;

	foreach ( $plugin_files as $plugin_file ) {
		if ( !is_readable( "$plugin_root/$plugin_file" ) )
			continue;

		$plugin_data = get_plugin_data( "$plugin_root/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.

		if ( empty ( $plugin_data['Name'] ) )
			continue;

		$wp_plugins[plugin_basename( $plugin_file )] = $plugin_data;
	}

	uasort( $wp_plugins, '_sort_uname_callback' );

	$cache_plugins[ $plugin_folder ] = $wp_plugins;
	wp_cache_set('plugins', $cache_plugins, 'plugins');

	return $wp_plugins;
}

/**
 * Check the mu-plugins directory and retrieve all mu-plugin files with any plugin data.
 *
 * WordPress only includes mu-plugin files in the base mu-plugins directory (wp-content/mu-plugins).
 *
 * @since 3.0.0
 * @return array Key is the mu-plugin file path and the value is an array of the mu-plugin data.
 */
function get_mu_plugins() {
	$wp_plugins = array();
	// Files in wp-content/mu-plugins directory
	$plugin_files = array();

	if ( ! is_dir( WPMU_PLUGIN_DIR ) )
		return $wp_plugins;
	if ( $plugins_dir = @ opendir( WPMU_PLUGIN_DIR ) ) {
		while ( ( $file = readdir( $plugins_dir ) ) !== false ) {
			if ( substr( $file, -4 ) == '.php' )
				$plugin_files[] = $file;
		}
	} else {
		return $wp_plugins;
	}

	@closedir( $plugins_dir );

	if ( empty($plugin_files) )
		return $wp_plugins;

	foreach ( $plugin_files as $plugin_file ) {
		if ( !is_readable( WPMU_PLUGIN_DIR . "/$plugin_file" ) )
			continue;

		$plugin_data = get_plugin_data( WPMU_PLUGIN_DIR . "/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.

		if ( empty ( $plugin_data['Name'] ) )
			$plugin_data['Name'] = $plugin_file;

		$wp_plugins[ $plugin_file ] = $plugin_data;
	}

	if ( isset( $wp_plugins['index.php'] ) && filesize( WPMU_PLUGIN_DIR . '/index.php') <= 30 ) // silence is golden
		unset( $wp_plugins['index.php'] );

	uasort( $wp_plugins, '_sort_uname_callback' );

	return $wp_plugins;
}

/**
 * Callback to sort array by a 'Name' key.
 *
 * @since 3.1.0
 * @access private
 */
function _sort_uname_callback( $a, $b ) {
	return strnatcasecmp( $a['Name'], $b['Name'] );
}

/**
 * Check the wp-content directory and retrieve all drop-ins with any plugin data.
 *
 * @since 3.0.0
 * @return array Key is the file path and the value is an array of the plugin data.
 */
function get_dropins() {
	$dropins = array();
	$plugin_files = array();

	$_dropins = _get_dropins();

	// These exist in the wp-content directory
	if ( $plugins_dir = @ opendir( WP_CONTENT_DIR ) ) {
		while ( ( $file = readdir( $plugins_dir ) ) !== false ) {
			if ( isset( $_dropins[ $file ] ) )
				$plugin_files[] = $file;
		}
	} else {
		return $dropins;
	}

	@closedir( $plugins_dir );

	if ( empty($plugin_files) )
		return $dropins;

	foreach ( $plugin_files as $plugin_file ) {
		if ( !is_readable( WP_CONTENT_DIR . "/$plugin_file" ) )
			continue;
		$plugin_data = get_plugin_data( WP_CONTENT_DIR . "/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.
		if ( empty( $plugin_data['Name'] ) )
			$plugin_data['Name'] = $plugin_file;
		$dropins[ $plugin_file ] = $plugin_data;
	}

	uksort( $dropins, 'strnatcasecmp' );

	return $dropins;
}

/**
 * Returns drop-ins that WordPress uses.
 *
 * Includes Multisite drop-ins only when is_multisite()
 *
 * @since 3.0.0
 * @return array Key is file name. The value is an array, with the first value the
 *	purpose of the drop-in and the second value the name of the constant that must be
 *	true for the drop-in to be used, or true if no constant is required.
 */
function _get_dropins() {
	$dropins = array(
		'advanced-cache.php' => array( __( 'Advanced caching plugin.'       ), 'WP_CACHE' ), // WP_CACHE
		'db.php'             => array( __( 'Custom database class.'         ), true ), // auto on load
		'db-error.php'       => array( __( 'Custom database error message.' ), true ), // auto on error
		'install.php'        => array( __( 'Custom install script.'         ), true ), // auto on install
		'maintenance.php'    => array( __( 'Custom maintenance message.'    ), true ), // auto on maintenance
		'object-cache.php'   => array( __( 'External object cache.'         ), true ), // auto on load
	);

	if ( is_multisite() ) {
		$dropins['sunrise.php'       ] = array( __( 'Executed before Multisite is loaded.' ), 'SUNRISE' ); // SUNRISE
		$dropins['blog-deleted.php'  ] = array( __( 'Custom site deleted message.'   ), true ); // auto on deleted blog
		$dropins['blog-inactive.php' ] = array( __( 'Custom site inactive message.'  ), true ); // auto on inactive blog
		$dropins['blog-suspended.php'] = array( __( 'Custom site suspended message.' ), true ); // auto on archived or spammed blog
	}

	return $dropins;
}

/**
 * Check whether the plugin is active by checking the active_plugins list.
 *
 * @since 2.5.0
 *
 * @param string $plugin Base plugin path from plugins directory.
 * @return bool True, if in the active plugins list. False, not in the list.
 */
function is_plugin_active( $plugin ) {
	return in_array( $plugin, (array) get_option( 'active_plugins', array() ) ) || is_plugin_active_for_network( $plugin );
}

/**
 * Check whether the plugin is inactive.
 *
 * Reverse of is_plugin_active(). Used as a callback.
 *
 * @since 3.1.0
 * @see is_plugin_active()
 *
 * @param string $plugin Base plugin path from plugins directory.
 * @return bool True if inactive. False if active.
 */
function is_plugin_inactive( $plugin ) {
	return ! is_plugin_active( $plugin );
}

/**
 * Check whether the plugin is active for the entire network.
 *
 * @since 3.0.0
 *
 * @param string $plugin Base plugin path from plugins directory.
 * @return bool True, if active for the network, otherwise false.
 */
function is_plugin_active_for_network( $plugin ) {
	if ( !is_multisite() )
		return false;

	$plugins = get_site_option( 'active_sitewide_plugins');
	if ( isset($plugins[$plugin]) )
		return true;

	return false;
}

/**
 * Checks for "Network: true" in the plugin header to see if this should
 * be activated only as a network wide plugin. The plugin would also work
 * when Multisite is not enabled.
 *
 * Checks for "Site Wide Only: true" for backwards compatibility.
 *
 * @since 3.0.0
 *
 * @param string $plugin Plugin to check
 * @return bool True if plugin is network only, false otherwise.
 */
function is_network_only_plugin( $plugin ) {
	$plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );
	if ( $plugin_data )
		return $plugin_data['Network'];
	return false;
}

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

<?php

/**

* WordPress Plugin Administration API

* @package WordPress

* @subpackage Administration

/**

* Parse the plugin contents to retrieve plugin's metadata.

* The metadata of the plugin's data searches for the following in the plugin's

* header. All plugin data must be on its own line. For plugin description, it

* must not have any newlines or only parts of the description will be displayed

* and the same goes for the plugin data. The below is formatted for printing.

* <code>

* /*

* Plugin Name: Name of Plugin

* Plugin URI: Link to plugin information

* Description: Plugin Description

* Author: Plugin author's name

* Author URI: Link to the author's web site

* Version: Must be set in the plugin for WordPress 2.3+

* Text Domain: Optional. Unique identifier, should be same as the one used in

* plugin_text_domain()

* Domain Path: Optional. Only useful if the translations are located in a

* folder above the plugin's base path. For example, if .mo files are

* located in the locale folder then Domain Path will be "/locale/" and

* must have the first slash. Defaults to the base folder the plugin is

* located in.

* Network: Optional. Specify "Network: true" to require that a plugin is activated

* across all sites in an installation. This will prevent a plugin from being

* activated on a single site when Multisite is enabled.

* * / # Remove the space to close comment

* Plugin data returned array contains the following:

* 'Name' - Name of the plugin, must be unique.

* 'Title' - Title of the plugin and the link to the plugin's web site.

* 'Description' - Description of what the plugin does and/or notes

* from the author.

* 'Author' - The author's name

* 'AuthorURI' - The authors web site address.

* 'Version' - The plugin version number.

* 'PluginURI' - Plugin web site address.

* 'TextDomain' - Plugin's text domain for localization.

* 'DomainPath' - Plugin's relative directory path to .mo files.

* 'Network' - Boolean. Whether the plugin can only be activated network wide.

* Some users have issues with opening large files and manipulating the contents

* for want is usually the first 1kiB or 2kiB. This function stops pulling in

* the plugin contents when it has all of the required plugin data.

* The first 8kiB of the file will be pulled in and if the plugin data is not

* within that first 8kiB, then the plugin author should correct their plugin

* and move the plugin data headers to the top.

* The plugin file is assumed to have permissions to allow for scripts to read

* the file. This is not checked however and the file is only opened for

* reading.

* @link http://trac.wordpress.org/ticket/5651 Previous Optimizations.

* @link http://trac.wordpress.org/ticket/7372 Further and better Optimizations.

* @since 1.5.0

* @param string $plugin_file Path to the plugin file

* @param bool $markup Optional. If the returned data should have HTML markup applied. Defaults to true.

* @param bool $translate Optional. If the returned data should be translated. Defaults to true.

* @return array See above for description.

function get_plugin_data( $plugin_file, $markup = true, $translate = true ) {

$default_headers = array(

'Name' => 'Plugin Name',

'PluginURI' => 'Plugin URI',

'Version' => 'Version',

'Description' => 'Description',

'Author' => 'Author',

'AuthorURI' => 'Author URI',

'TextDomain' => 'Text Domain',

'DomainPath' => 'Domain Path',

'Network' => 'Network',

// Site Wide Only is deprecated in favor of Network.

'_sitewide' => 'Site Wide Only',

);

$plugin_data = get_file_data( $plugin_file, $default_headers, 'plugin' );

// Site Wide Only is the old header for Network

if ( ! $plugin_data['Network'] && $plugin_data['_sitewide'] ) {

_deprecated_argument( __FUNCTION__, '3.0', sprintf( __( 'The <code>%1$s</code> plugin header is deprecated. Use <code>%2$s</code> instead.' ), 'Site Wide Only: true', 'Network: true' ) );

$plugin_data['Network'] = $plugin_data['_sitewide'];

}

$plugin_data['Network'] = ( 'true' == strtolower( $plugin_data['Network'] ) );

unset( $plugin_data['_sitewide'] );

if ( $markup || $translate ) {

$plugin_data = _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup, $translate );

} else {

$plugin_data['Title'] = $plugin_data['Name'];

$plugin_data['AuthorName'] = $plugin_data['Author'];

}

return $plugin_data;

}

/**

* Sanitizes plugin data, optionally adds markup, optionally translates.

* @since 2.7.0

* @access private

* @see get_plugin_data()

function _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup = true, $translate = true ) {

// Sanitize the plugin filename to a WP_PLUGIN_DIR relative path

$plugin_file = plugin_basename( $plugin_file );

// Translate fields

if ( $translate ) {

if ( $textdomain = $plugin_data['TextDomain'] ) {

if ( $plugin_data['DomainPath'] )

load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) . $plugin_data['DomainPath'] );

else

load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) );

} elseif ( in_array( basename( $plugin_file ), array( 'hello.php', 'akismet.php' ) ) ) {

$textdomain = 'default';

}

if ( $textdomain ) {

foreach ( array( 'Name', 'PluginURI', 'Description', 'Author', 'AuthorURI', 'Version' ) as $field )

$plugin_data[ $field ] = translate( $plugin_data[ $field ], $textdomain );

}

// Sanitize fields

$allowed_tags = $allowed_tags_in_links = array(

'abbr' => array( 'title' => true ),

'acronym' => array( 'title' => true ),

'code' => true,

'em' => true,

'strong' => true,

);

$allowed_tags['a'] = array( 'href' => true, 'title' => true );

// Name is marked up inside <a> tags. Don't allow these.

// Author is too, but some plugins have used <a> here (omitting Author URI).

$plugin_data['Name'] = wp_kses( $plugin_data['Name'], $allowed_tags_in_links );

$plugin_data['Author'] = wp_kses( $plugin_data['Author'], $allowed_tags );

$plugin_data['Description'] = wp_kses( $plugin_data['Description'], $allowed_tags );

$plugin_data['Version'] = wp_kses( $plugin_data['Version'], $allowed_tags );

$plugin_data['PluginURI'] = esc_url( $plugin_data['PluginURI'] );

$plugin_data['AuthorURI'] = esc_url( $plugin_data['AuthorURI'] );

$plugin_data['Title'] = $plugin_data['Name'];

$plugin_data['AuthorName'] = $plugin_data['Author'];

// Apply markup

if ( $markup ) {

if ( $plugin_data['PluginURI'] && $plugin_data['Name'] )

$plugin_data['Title'] = '<a href="' . $plugin_data['PluginURI'] . '">' . $plugin_data['Name'] . '</a>';

if ( $plugin_data['AuthorURI'] && $plugin_data['Author'] )

$plugin_data['Author'] = '<a href="' . $plugin_data['AuthorURI'] . '">' . $plugin_data['Author'] . '</a>';

$plugin_data['Description'] = wptexturize( $plugin_data['Description'] );

if ( $plugin_data['Author'] )

$plugin_data['Description'] .= ' <cite>' . sprintf( __('By %s.'), $plugin_data['Author'] ) . '</cite>';

}

return $plugin_data;

}

/**

* Get a list of a plugin's files.

* @since 2.8.0

* @param string $plugin Plugin ID

* @return array List of files relative to the plugin root.

function get_plugin_files($plugin) {

$plugin_file = WP_PLUGIN_DIR . '/' . $plugin;

$dir = dirname($plugin_file);

$plugin_files = array($plugin);

if ( is_dir($dir) && $dir != WP_PLUGIN_DIR ) {

$plugins_dir = @ opendir( $dir );

if ( $plugins_dir ) {

while (($file = readdir( $plugins_dir ) ) !== false ) {

if ( substr($file, 0, 1) == '.' )

continue;

if ( is_dir( $dir . '/' . $file ) ) {

$plugins_subdir = @ opendir( $dir . '/' . $file );

if ( $plugins_subdir ) {

while (($subfile = readdir( $plugins_subdir ) ) !== false ) {

if ( substr($subfile, 0, 1) == '.' )

continue;

$plugin_files[] = plugin_basename("$dir/$file/$subfile");

}

@closedir( $plugins_subdir );

}

} else {

if ( plugin_basename("$dir/$file") != $plugin )

$plugin_files[] = plugin_basename("$dir/$file");

}

@closedir( $plugins_dir );

}

return $plugin_files;

}

/**

* Check the plugins directory and retrieve all plugin files with plugin data.

* WordPress only supports plugin files in the base plugins directory

* (wp-content/plugins) and in one directory above the plugins directory

* (wp-content/plugins/my-plugin). The file it looks for has the plugin data and

* must be found in those two locations. It is recommended that do keep your

* plugin files in directories.

* The file with the plugin data is the file that will be included and therefore

* needs to have the main execution for the plugin. This does not mean

* everything must be contained in the file and it is recommended that the file

* be split for maintainability. Keep everything in one file for extreme

* optimization purposes.

* @since 1.5.0

* @param string $plugin_folder Optional. Relative path to single plugin folder.

* @return array Key is the plugin file path and the value is an array of the plugin data.

function get_plugins($plugin_folder = '') {

if ( ! $cache_plugins = wp_cache_get('plugins', 'plugins') )

$cache_plugins = array();

if ( isset($cache_plugins[ $plugin_folder ]) )

return $cache_plugins[ $plugin_folder ];

$wp_plugins = array ();

$plugin_root = WP_PLUGIN_DIR;

if ( !empty($plugin_folder) )

$plugin_root .= $plugin_folder;

// Files in wp-content/plugins directory

$plugins_dir = @ opendir( $plugin_root);

$plugin_files = array();

if ( $plugins_dir ) {

while (($file = readdir( $plugins_dir ) ) !== false ) {

if ( substr($file, 0, 1) == '.' )

continue;

if ( is_dir( $plugin_root.'/'.$file ) ) {

$plugins_subdir = @ opendir( $plugin_root.'/'.$file );

if ( $plugins_subdir ) {

while (($subfile = readdir( $plugins_subdir ) ) !== false ) {

if ( substr($subfile, 0, 1) == '.' )

continue;

if ( substr($subfile, -4) == '.php' )

$plugin_files[] = "$file/$subfile";

}

closedir( $plugins_subdir );

}

} else {

if ( substr($file, -4) == '.php' )

$plugin_files[] = $file;

}

closedir( $plugins_dir );

}

if ( empty($plugin_files) )

return $wp_plugins;

foreach ( $plugin_files as $plugin_file ) {

if ( !is_readable( "$plugin_root/$plugin_file" ) )

continue;

$plugin_data = get_plugin_data( "$plugin_root/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.

if ( empty ( $plugin_data['Name'] ) )

continue;

$wp_plugins[plugin_basename( $plugin_file )] = $plugin_data;

}

uasort( $wp_plugins, '_sort_uname_callback' );

$cache_plugins[ $plugin_folder ] = $wp_plugins;

wp_cache_set('plugins', $cache_plugins, 'plugins');

return $wp_plugins;

}

/**

* Check the mu-plugins directory and retrieve all mu-plugin files with any plugin data.

* WordPress only includes mu-plugin files in the base mu-plugins directory (wp-content/mu-plugins).

* @since 3.0.0

* @return array Key is the mu-plugin file path and the value is an array of the mu-plugin data.

function get_mu_plugins() {

$wp_plugins = array();

// Files in wp-content/mu-plugins directory

$plugin_files = array();

if ( ! is_dir( WPMU_PLUGIN_DIR ) )

return $wp_plugins;

if ( $plugins_dir = @ opendir( WPMU_PLUGIN_DIR ) ) {

while ( ( $file = readdir( $plugins_dir ) ) !== false ) {

if ( substr( $file, -4 ) == '.php' )

$plugin_files[] = $file;

}

} else {

return $wp_plugins;

}

@closedir( $plugins_dir );

if ( empty($plugin_files) )

return $wp_plugins;

foreach ( $plugin_files as $plugin_file ) {

if ( !is_readable( WPMU_PLUGIN_DIR . "/$plugin_file" ) )

continue;

$plugin_data = get_plugin_data( WPMU_PLUGIN_DIR . "/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.

if ( empty ( $plugin_data['Name'] ) )

$plugin_data['Name'] = $plugin_file;

$wp_plugins[ $plugin_file ] = $plugin_data;

}

if ( isset( $wp_plugins['index.php'] ) && filesize( WPMU_PLUGIN_DIR . '/index.php') <= 30 ) // silence is golden

unset( $wp_plugins['index.php'] );

uasort( $wp_plugins, '_sort_uname_callback' );

return $wp_plugins;

}

/**

* Callback to sort array by a 'Name' key.

* @since 3.1.0

* @access private

function _sort_uname_callback( $a, $b ) {

return strnatcasecmp( $a['Name'], $b['Name'] );

}

/**

* Check the wp-content directory and retrieve all drop-ins with any plugin data.

* @since 3.0.0

* @return array Key is the file path and the value is an array of the plugin data.

function get_dropins() {

$dropins = array();

$plugin_files = array();

$_dropins = _get_dropins();

// These exist in the wp-content directory

if ( $plugins_dir = @ opendir( WP_CONTENT_DIR ) ) {

while ( ( $file = readdir( $plugins_dir ) ) !== false ) {

if ( isset( $_dropins[ $file ] ) )

$plugin_files[] = $file;

}

} else {

return $dropins;

}

@closedir( $plugins_dir );

if ( empty($plugin_files) )

return $dropins;

foreach ( $plugin_files as $plugin_file ) {

if ( !is_readable( WP_CONTENT_DIR . "/$plugin_file" ) )

continue;

$plugin_data = get_plugin_data( WP_CONTENT_DIR . "/$plugin_file", false, false ); //Do not apply markup/translate as it'll be cached.

if ( empty( $plugin_data['Name'] ) )

$plugin_data['Name'] = $plugin_file;

$dropins[ $plugin_file ] = $plugin_data;

}

uksort( $dropins, 'strnatcasecmp' );

return $dropins;

}

/**

* Returns drop-ins that WordPress uses.

* Includes Multisite drop-ins only when is_multisite()

* @since 3.0.0

* @return array Key is file name. The value is an array, with the first value the

* purpose of the drop-in and the second value the name of the constant that must be

* true for the drop-in to be used, or true if no constant is required.

function _get_dropins() {

$dropins = array(

'advanced-cache.php' => array( __( 'Advanced caching plugin.' ), 'WP_CACHE' ), // WP_CACHE

'db.php' => array( __( 'Custom database class.' ), true ), // auto on load

'db-error.php' => array( __( 'Custom database error message.' ), true ), // auto on error

'install.php' => array( __( 'Custom install script.' ), true ), // auto on install

'maintenance.php' => array( __( 'Custom maintenance message.' ), true ), // auto on maintenance

'object-cache.php' => array( __( 'External object cache.' ), true ), // auto on load

);

if ( is_multisite() ) {

$dropins['sunrise.php' ] = array( __( 'Executed before Multisite is loaded.' ), 'SUNRISE' ); // SUNRISE

$dropins['blog-deleted.php' ] = array( __( 'Custom site deleted message.' ), true ); // auto on deleted blog

$dropins['blog-inactive.php' ] = array( __( 'Custom site inactive message.' ), true ); // auto on inactive blog

$dropins['blog-suspended.php'] = array( __( 'Custom site suspended message.' ), true ); // auto on archived or spammed blog

}

return $dropins;

}

/**

* Check whether the plugin is active by checking the active_plugins list.

* @since 2.5.0

* @param string $plugin Base plugin path from plugins directory.

* @return bool True, if in the active plugins list. False, not in the list.

function is_plugin_active( $plugin ) {

return in_array( $plugin, (array) get_option( 'active_plugins', array() ) ) || is_plugin_active_for_network( $plugin );

}

/**

* Check whether the plugin is inactive.

* Reverse of is_plugin_active(). Used as a callback.

* @since 3.1.0

* @see is_plugin_active()

* @param string $plugin Base plugin path from plugins directory.

* @return bool True if inactive. False if active.

function is_plugin_inactive( $plugin ) {

return ! is_plugin_active( $plugin );

}

/**

* Check whether the plugin is active for the entire network.

* @since 3.0.0

* @param string $plugin Base plugin path from plugins directory.

* @return bool True, if active for the network, otherwise false.

function is_plugin_active_for_network( $plugin ) {

if ( !is_multisite() )

return false;

$plugins = get_site_option( 'active_sitewide_plugins');

if ( isset($plugins[$plugin]) )

return true;

return false;

}

/**

* Checks for "Network: true" in the plugin header to see if this should

* be activated only as a network wide plugin. The plugin would also work

* when Multisite is not enabled.

* Checks for "Site Wide Only: true" for backwards compatibility.

* @since 3.0.0

* @param string $plugin Plugin to check

* @return bool True if plugin is network only, false otherwise.

function is_network_only_plugin( $plugin ) {

$plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );

if ( $plugin_data )

return $plugin_data['Network'];

return false;

}

- Wordpress

2024年4月
月	火	水	木	金	土	日
« 4月
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

WordPressを読む 93-1 /blog/wp-admin/includes/plugin.php 1

WordPressを読む　93-1 /blog/wp-admin/includes/plugin.php 1