| 1 |
<?php |
| 2 |
|
| 3 |
// If this file is called directly, abort. |
| 4 |
if ( ! defined( 'WPINC' ) ) { |
| 5 |
die; |
| 6 |
} |
| 7 |
|
| 8 |
|
| 9 |
/** |
| 10 |
* Get website language data array |
| 11 |
* |
| 12 |
* @return array Language data |
| 13 |
*/ |
| 14 |
function wplng_get_language_website() { |
| 15 |
|
| 16 |
global $wplng_language_website; |
| 17 |
|
| 18 |
if ( null !== $wplng_language_website ) { |
| 19 |
return $wplng_language_website; |
| 20 |
} |
| 21 |
|
| 22 |
$language = wplng_get_language_by_id( |
| 23 |
wplng_get_language_website_id() |
| 24 |
); |
| 25 |
|
| 26 |
$wplng_language_website = $language; |
| 27 |
|
| 28 |
return $language; |
| 29 |
} |
| 30 |
|
| 31 |
|
| 32 |
/** |
| 33 |
* Get the website language ID |
| 34 |
* |
| 35 |
* @return string Language ID |
| 36 |
*/ |
| 37 |
function wplng_get_language_website_id() { |
| 38 |
|
| 39 |
$language_api = wplng_get_api_language_website(); |
| 40 |
|
| 41 |
if ( 'all' === $language_api ) { |
| 42 |
$language_id = get_option( 'wplng_website_language' ); |
| 43 |
} elseif ( false === $language_api ) { |
| 44 |
return 'en'; |
| 45 |
} else { |
| 46 |
$language_id = wplng_get_api_language_website(); |
| 47 |
} |
| 48 |
|
| 49 |
if ( ! wplng_is_valid_language_id( $language_id ) ) { |
| 50 |
return 'en'; |
| 51 |
} |
| 52 |
|
| 53 |
return $language_id; |
| 54 |
} |
| 55 |
|
| 56 |
|
| 57 |
/** |
| 58 |
* Get the URL of website language flag image |
| 59 |
* |
| 60 |
* @return string URL flag image |
| 61 |
*/ |
| 62 |
function wplng_get_language_website_flag() { |
| 63 |
|
| 64 |
$website_flag = get_option( 'wplng_website_flag' ); |
| 65 |
|
| 66 |
if ( empty( $website_flag ) ) { |
| 67 |
|
| 68 |
$website_flag = wplng_get_language_by_id( |
| 69 |
wplng_get_language_website_id() |
| 70 |
); |
| 71 |
|
| 72 |
if ( ! empty( $website_flag['flags'][0]['flag'] ) ) { |
| 73 |
$website_flag = $website_flag['flags'][0]['flag']; |
| 74 |
} else { |
| 75 |
$website_flag = ''; // Return empty string if no valid flag |
| 76 |
} |
| 77 |
} |
| 78 |
|
| 79 |
$website_flag = apply_filters( 'wplng_language_website_flag', $website_flag ); |
| 80 |
|
| 81 |
return esc_url( $website_flag ); |
| 82 |
} |
| 83 |
|
| 84 |
|
| 85 |
/** |
| 86 |
* Get language name from language ID or data |
| 87 |
* |
| 88 |
* @param mixed $language |
| 89 |
* @return string |
| 90 |
*/ |
| 91 |
function wplng_get_language_name( $language ) { |
| 92 |
|
| 93 |
// if $language is a language array, return name |
| 94 |
if ( ! empty( $language['name'] ) ) { |
| 95 |
return esc_html( $language['name'] ); |
| 96 |
} |
| 97 |
|
| 98 |
// $language is a language ID |
| 99 |
// convert language ID to language array |
| 100 |
$language = wplng_get_language_by_id( $language ); |
| 101 |
|
| 102 |
// If $language is not a valid, return empty string |
| 103 |
if ( false === $language ) { |
| 104 |
return ''; |
| 105 |
} |
| 106 |
|
| 107 |
// If name is valid, return the name |
| 108 |
if ( ! empty( $language['name'] ) ) { |
| 109 |
return esc_html( $language['name'] ); |
| 110 |
} |
| 111 |
|
| 112 |
// If no name returned here, return empty string |
| 113 |
return ''; |
| 114 |
} |
| 115 |
|
| 116 |
|
| 117 |
/** |
| 118 |
* Get language plural forms from language ID ("en" or "en_US") or data |
| 119 |
* |
| 120 |
* @param mixed $language |
| 121 |
* @return string |
| 122 |
*/ |
| 123 |
function wplng_get_language_plural_forms( $language ) { |
| 124 |
|
| 125 |
// if $language is a language array, return plural_forms |
| 126 |
if ( is_array( $language ) |
| 127 |
&& ! empty( $language['plural_forms'] ) |
| 128 |
) { |
| 129 |
return $language['plural_forms']; |
| 130 |
} |
| 131 |
|
| 132 |
if ( ! is_string( $language ) ) { |
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// Return most current plural form |
| 134 |
return 'nplurals=2; plural=n != 1;'; |
| 135 |
} |
| 136 |
|
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// If string is like "en_US" |
| 138 |
if ( strlen( $language ) > 2 ) { |
| 139 |
$language = strtolower( explode( '_', $language )[0] ); |
| 140 |
} |
| 141 |
|
| 142 |
if ( ! wplng_is_valid_language_id( $language ) ) { |
| 143 |
// Return most current plural form |
| 144 |
return 'nplurals=2; plural=n != 1;'; |
| 145 |
} |
| 146 |
|
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// $language is a language ID |
| 148 |
// convert language ID to language array |
| 149 |
$language = wplng_get_language_by_id( $language ); |
| 150 |
|
| 151 |
// If $language is not a valid, return most current plural form |
| 152 |
if ( false === $language ) { |
| 153 |
return 'nplurals=2; plural=n != 1;'; |
| 154 |
} |
| 155 |
|
| 156 |
// If plural forms is know, return it |
| 157 |
if ( ! empty( $language['plural_forms'] ) ) { |
| 158 |
return $language['plural_forms']; |
| 159 |
} |
| 160 |
|
| 161 |
// If no plural forms returned here, return most current plural form |
| 162 |
return 'nplurals=2; plural=n != 1;'; |
| 163 |
} |
| 164 |
|
| 165 |
|
| 166 |
/** |
| 167 |
* Get language ID from language ID or data |
| 168 |
* |
| 169 |
* @param mixed $language |
| 170 |
* @return string Language ID |
| 171 |
*/ |
| 172 |
function wplng_get_language_id( $language ) { |
| 173 |
|
| 174 |
// If $language is a language array |
| 175 |
if ( ! empty( $language['id'] ) |
| 176 |
&& wplng_is_valid_language_id( $language['id'] ) |
| 177 |
) { |
| 178 |
return $language['id']; |
| 179 |
} |
| 180 |
|
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// If $language is a language ID, get language array |
| 182 |
$language = wplng_get_language_by_id( $language ); |
| 183 |
|
| 184 |
// If language ID is invalid, return a default value |
| 185 |
if ( false === $language || empty( $language['id'] ) ) { |
| 186 |
return 'en'; |
| 187 |
} |
| 188 |
|
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return $language['id']; |
| 190 |
} |
| 191 |
|
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|
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/** |
| 194 |
* Get language name translated from language ID or data |
| 195 |
* |
| 196 |
* @param mixed $language Language ID or data |
| 197 |
* @param string $language_target Language ID |
| 198 |
* @return string Language name translated |
| 199 |
*/ |
| 200 |
function wplng_get_language_name_translated( $language, $language_target = '' ) { |
| 201 |
|
| 202 |
// Get target language ID |
| 203 |
if ( empty( $language_target ) ) { |
| 204 |
$language_target = wplng_get_language_current_id(); |
| 205 |
} |
| 206 |
$language_target_id = wplng_get_language_id( $language_target ); |
| 207 |
|
| 208 |
// Get language array |
| 209 |
if ( empty( $language['id'] ) ) { |
| 210 |
$language = wplng_get_language_by_id( $language ); |
| 211 |
} |
| 212 |
|
| 213 |
$translated_language_name = ''; |
| 214 |
|
| 215 |
if ( ! empty( $language['name_translation'][ $language_target_id ] ) ) { |
| 216 |
$translated_language_name = esc_html( $language['name_translation'][ $language_target_id ] ); |
| 217 |
} else { |
| 218 |
$translated_language_name = wplng_get_language_name( $language ); |
| 219 |
} |
| 220 |
|
| 221 |
return esc_html( $translated_language_name ); |
| 222 |
} |
| 223 |
|
| 224 |
|
| 225 |
function wplng_get_language_name_untranslated( $language ) { |
| 226 |
return wplng_get_language_name_translated( $language, $language ); |
| 227 |
} |
| 228 |
|
| 229 |
|
| 230 |
/** |
| 231 |
* Return a JSON with languages data simplified |
| 232 |
* |
| 233 |
* @return array Languages data simplified |
| 234 |
*/ |
| 235 |
function wplng_get_languages_target_simplified() { |
| 236 |
|
| 237 |
global $wplng_languages_target_simplified; |
| 238 |
|
| 239 |
if ( null !== $wplng_languages_target_simplified ) { |
| 240 |
return $wplng_languages_target_simplified; |
| 241 |
} |
| 242 |
|
| 243 |
$json = get_option( 'wplng_target_languages' ); |
| 244 |
|
| 245 |
if ( empty( $json ) || ! is_string( $json ) ) { |
| 246 |
$json = '[]'; |
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} |
| 248 |
|
| 249 |
$languages_target = json_decode( $json, true ); |
| 250 |
$all_languages = wplng_get_languages_allow(); |
| 251 |
$ordered = array(); |
| 252 |
|
| 253 |
// Process languages in the order they appear in the settings (preserve order) |
| 254 |
foreach ( $languages_target as $language_target ) { |
| 255 |
if ( empty( $language_target['id'] ) ) { |
| 256 |
continue; |
| 257 |
} |
| 258 |
|
| 259 |
// Skip private languages for non-authorized users |
| 260 |
if ( ! empty( $language_target['private'] ) |
| 261 |
&& ! current_user_can( 'edit_posts' ) |
| 262 |
) { |
| 263 |
continue; |
| 264 |
} |
| 265 |
|
| 266 |
// Find the language in allowed languages to validate it exists |
| 267 |
$language_found = false; |
| 268 |
foreach ( $all_languages as $language ) { |
| 269 |
if ( ! empty( $language['id'] ) && $language['id'] === $language_target['id'] ) { |
| 270 |
$language_found = true; |
| 271 |
break; |
| 272 |
} |
| 273 |
} |
| 274 |
|
| 275 |
// Only add if the language is found in allowed languages |
| 276 |
if ( $language_found ) { |
| 277 |
$ordered[] = $language_target; |
| 278 |
} |
| 279 |
} |
| 280 |
|
| 281 |
$wplng_languages_target_simplified = $ordered; |
| 282 |
|
| 283 |
return $ordered; |
| 284 |
} |
| 285 |
|
| 286 |
|
| 287 |
/** |
| 288 |
* Get target languages data |
| 289 |
* |
| 290 |
* @return array |
| 291 |
*/ |
| 292 |
function wplng_get_languages_target() { |
| 293 |
|
| 294 |
global $wplng_languages_target; |
| 295 |
|
| 296 |
if ( null !== $wplng_languages_target ) { |
| 297 |
return $wplng_languages_target; |
| 298 |
} |
| 299 |
|
| 300 |
$languages_target = wplng_get_languages_target_simplified(); |
| 301 |
$languages_target_clear = array(); |
| 302 |
|
| 303 |
// Check each $languages_target |
| 304 |
foreach ( $languages_target as $key => $language_target ) { |
| 305 |
// Check languages target format |
| 306 |
if ( ! empty( $language_target['id'] ) && isset( $language_target['flag'] ) ) { |
| 307 |
// Check if language is valid |
| 308 |
if ( wplng_is_valid_language_id( $language_target['id'] ) ) { |
| 309 |
$language = wplng_get_language_by_id( $language_target['id'] ); |
| 310 |
if ( false !== $language ) { |
| 311 |
$languages_target_clear[] = $language; |
| 312 |
} |
| 313 |
} |
| 314 |
} |
| 315 |
} |
| 316 |
|
| 317 |
$wplng_languages_target = $languages_target_clear; |
| 318 |
|
| 319 |
return $languages_target_clear; |
| 320 |
} |
| 321 |
|
| 322 |
|
| 323 |
/** |
| 324 |
* Get target languages IDs |
| 325 |
* |
| 326 |
* @return array |
| 327 |
*/ |
| 328 |
function wplng_get_languages_target_ids() { |
| 329 |
|
| 330 |
global $wplng_languages_target_ids; |
| 331 |
|
| 332 |
if ( null !== $wplng_languages_target_ids ) { |
| 333 |
return $wplng_languages_target_ids; |
| 334 |
} |
| 335 |
|
| 336 |
$languages_target = wplng_get_languages_target(); |
| 337 |
$languages_target_ids = array(); |
| 338 |
|
| 339 |
foreach ( $languages_target as $language_target ) { |
| 340 |
$languages_target_ids[] = $language_target['id']; |
| 341 |
} |
| 342 |
|
| 343 |
$wplng_languages_target_ids = $languages_target_ids; |
| 344 |
|
| 345 |
return $languages_target_ids; |
| 346 |
} |
| 347 |
|
| 348 |
|
| 349 |
/** |
| 350 |
* Get current language ID |
| 351 |
* |
| 352 |
* @return string |
| 353 |
*/ |
| 354 |
function wplng_get_language_current_id() { |
| 355 |
|
| 356 |
global $wplng_language_current_id; |
| 357 |
|
| 358 |
if ( null !== $wplng_language_current_id ) { |
| 359 |
return $wplng_language_current_id; |
| 360 |
} |
| 361 |
|
| 362 |
global $wplng_request_uri; |
| 363 |
$current_path = $wplng_request_uri; |
| 364 |
$languages_target = wplng_get_languages_target_ids(); |
| 365 |
|
| 366 |
if ( empty( $current_path ) |
| 367 |
|| ! is_string( $current_path ) |
| 368 |
) { |
| 369 |
return wplng_get_language_website_id(); |
| 370 |
} |
| 371 |
|
| 372 |
foreach ( $languages_target as $language ) { |
| 373 |
if ( substr( $current_path, 0, 4 ) === '/' . $language . '/' |
| 374 |
|| substr( $current_path, 0, 3 ) === $language . '/' |
| 375 |
) { |
| 376 |
|
| 377 |
$wplng_language_current_id = $language; |
| 378 |
|
| 379 |
return $language; |
| 380 |
} |
| 381 |
} |
| 382 |
|
| 383 |
$website_language_id = wplng_get_language_website_id(); |
| 384 |
$wplng_language_current_id = $website_language_id; |
| 385 |
|
| 386 |
return $website_language_id; |
| 387 |
} |
| 388 |
|
| 389 |
|
| 390 |
/** |
| 391 |
* Get languages data from languages IDs list |
| 392 |
* |
| 393 |
* @param array $language_ids |
| 394 |
* @return array |
| 395 |
*/ |
| 396 |
function wplng_get_languages_by_ids( $language_ids ) { |
| 397 |
|
| 398 |
$all_languages = wplng_get_languages_all(); |
| 399 |
$languages = array(); |
| 400 |
|
| 401 |
foreach ( $language_ids as $language_id ) { |
| 402 |
foreach ( $all_languages as $language ) { |
| 403 |
if ( ! empty( $language['id'] ) && $language['id'] === $language_id ) { |
| 404 |
$languages[] = $language; |
| 405 |
break; |
| 406 |
} |
| 407 |
} |
| 408 |
} |
| 409 |
|
| 410 |
return $languages; |
| 411 |
} |
| 412 |
|
| 413 |
|
| 414 |
/** |
| 415 |
* Get language data from ID |
| 416 |
* |
| 417 |
* @param string $language_id |
| 418 |
* @return array|false Language data array, or false if not found |
| 419 |
*/ |
| 420 |
function wplng_get_language_by_id( $language_id ) { |
| 421 |
|
| 422 |
$all_languages = wplng_get_languages_all(); |
| 423 |
|
| 424 |
foreach ( $all_languages as $language ) { |
| 425 |
if ( ! empty( $language['id'] ) && $language['id'] === $language_id ) { |
| 426 |
return $language; |
| 427 |
} |
| 428 |
} |
| 429 |
|
| 430 |
// Avoid infinite recursion: if 'en' itself is not found, return false |
| 431 |
if ( 'en' === $language_id ) { |
| 432 |
return false; |
| 433 |
} |
| 434 |
|
| 435 |
// Return English as fallback if the requested language ID does not exist |
| 436 |
return wplng_get_language_by_id( 'en' ); |
| 437 |
} |
| 438 |
|
| 439 |
|
| 440 |
/** |
| 441 |
* Check if a language ID is valid |
| 442 |
* |
| 443 |
* @param string $language_id |
| 444 |
* @return bool |
| 445 |
*/ |
| 446 |
function wplng_is_valid_language_id( $language_id ) { |
| 447 |
|
| 448 |
// If $language_id format is not valid, return default data |
| 449 |
if ( empty( $language_id ) |
| 450 |
|| ! is_string( $language_id ) |
| 451 |
|| strlen( $language_id ) !== 2 |
| 452 |
) { |
| 453 |
return false; |
| 454 |
} |
| 455 |
|
| 456 |
return in_array( $language_id, wplng_data_languages_id(), true ); |
| 457 |
} |
| 458 |
|
| 459 |
|
| 460 |
/** |
| 461 |
* Check if a list of languages ID are valid |
| 462 |
* |
| 463 |
* @param array $language_id_list |
| 464 |
* @return bool Languages ID are valid |
| 465 |
*/ |
| 466 |
function wplng_is_valid_language_ids( $language_id_list ) { |
| 467 |
|
| 468 |
if ( ! is_array( $language_id_list ) ) { |
| 469 |
return false; |
| 470 |
} |
| 471 |
|
| 472 |
$languages_data_id = wplng_data_languages_id(); |
| 473 |
|
| 474 |
foreach ( $language_id_list as $language_id ) { |
| 475 |
|
| 476 |
// If $language_id format is not valid, return default data |
| 477 |
if ( empty( $language_id ) |
| 478 |
|| ! is_string( $language_id ) |
| 479 |
|| strlen( $language_id ) !== 2 |
| 480 |
) { |
| 481 |
return false; |
| 482 |
} |
| 483 |
|
| 484 |
// If language ID not exist |
| 485 |
$is_valid_language = false; |
| 486 |
foreach ( $languages_data_id as $language_data_id ) { |
| 487 |
if ( $language_data_id === $language_id ) { |
| 488 |
$is_valid_language = true; |
| 489 |
break; |
| 490 |
} |
| 491 |
} |
| 492 |
|
| 493 |
if ( false === $is_valid_language ) { |
| 494 |
return false; |
| 495 |
} |
| 496 |
} |
| 497 |
|
| 498 |
return true; |
| 499 |
} |
| 500 |
|
| 501 |
|
| 502 |
/** |
| 503 |
* Get data of all languages |
| 504 |
* |
| 505 |
* @return array |
| 506 |
*/ |
| 507 |
function wplng_get_languages_all() { |
| 508 |
|
| 509 |
global $wplng_languages_all; |
| 510 |
|
| 511 |
if ( null !== $wplng_languages_all ) { |
| 512 |
return $wplng_languages_all; |
| 513 |
} |
| 514 |
|
| 515 |
$languages = wplng_data_languages(); |
| 516 |
$source_language = get_option( 'wplng_website_language' ); |
| 517 |
$source_flag = get_option( 'wplng_website_flag' ); |
| 518 |
$target_flags = get_option( 'wplng_target_languages' ); |
| 519 |
|
| 520 |
if ( empty( $target_flags ) || ! is_string( $target_flags ) ) { |
| 521 |
$target_flags = '[]'; |
| 522 |
} |
| 523 |
|
| 524 |
$target_flags = json_decode( $target_flags, true ); |
| 525 |
|
| 526 |
if ( empty( $source_language ) ) { |
| 527 |
$source_language = 'en'; |
| 528 |
} |
| 529 |
|
| 530 |
foreach ( $languages as $key => $language ) { |
| 531 |
|
| 532 |
$flags_style = wplng_get_switcher_flags_style() . '/'; |
| 533 |
|
| 534 |
if ( 'none/' === $flags_style ) { |
| 535 |
$flags_style = 'rectangular/'; |
| 536 |
} |
| 537 |
|
| 538 |
// Set custom website flag if defined |
| 539 |
if ( ! empty( $source_language ) |
| 540 |
&& $language['id'] === $source_language |
| 541 |
&& ! empty( $source_flag ) |
| 542 |
) { |
| 543 |
$languages[ $key ]['flag'] = $source_flag; |
| 544 |
} else { |
| 545 |
$languages[ $key ]['flag'] = plugins_url() . '/wplingua/assets/images/' . $flags_style . $language['flag'] . '.png'; |
| 546 |
} |
| 547 |
|
| 548 |
// Set custom target flag if defined |
| 549 |
foreach ( $target_flags as $target_key => $target_flag ) { |
| 550 |
if ( ! empty( $target_flag['id'] ) && $target_flag['id'] === $language['id'] ) { |
| 551 |
$languages[ $key ]['flag'] = $target_flag['flag']; |
| 552 |
break; |
| 553 |
} |
| 554 |
} |
| 555 |
|
| 556 |
// Transform flags to URL |
| 557 |
foreach ( $languages[ $key ]['flags'] as $key_flag => $flag ) { |
| 558 |
$languages[ $key ]['flags'][ $key_flag ]['flag'] = plugins_url() . '/wplingua/assets/images/' . $flags_style . $flag['flag'] . '.png'; |
| 559 |
} |
| 560 |
|
| 561 |
// Add default DIR as LTR if not specified or invalid |
| 562 |
if ( empty( $language['dir'] ) |
| 563 |
|| 'rtl' !== $language['dir'] |
| 564 |
) { |
| 565 |
$languages[ $key ]['dir'] = 'ltr'; |
| 566 |
} |
| 567 |
} |
| 568 |
|
| 569 |
$wplng_languages_all = $languages; |
| 570 |
|
| 571 |
return $languages; |
| 572 |
} |
| 573 |
|
| 574 |
|
| 575 |
/** |
| 576 |
* Get data of all languages allowed |
| 577 |
* |
| 578 |
* @return array |
| 579 |
*/ |
| 580 |
function wplng_get_languages_allow() { |
| 581 |
|
| 582 |
global $wplng_languages_allow; |
| 583 |
|
| 584 |
if ( null !== $wplng_languages_allow ) { |
| 585 |
return $wplng_languages_allow; |
| 586 |
} |
| 587 |
|
| 588 |
$languages_alow = wplng_get_api_languages_target(); |
| 589 |
$languages = array(); |
| 590 |
|
| 591 |
if ( 'all' === $languages_alow ) { |
| 592 |
$wplng_languages_allow = wplng_get_languages_all(); |
| 593 |
return $wplng_languages_allow; |
| 594 |
} elseif ( empty( $languages_alow ) || ! is_array( $languages_alow ) ) { |
| 595 |
$wplng_languages_allow = array(); |
| 596 |
return $wplng_languages_allow; |
| 597 |
} else { |
| 598 |
foreach ( $languages_alow as $language_id_alow ) { |
| 599 |
$languages[] = wplng_get_language_by_id( $language_id_alow ); |
| 600 |
} |
| 601 |
|
| 602 |
$wplng_languages_allow = $languages; |
| 603 |
} |
| 604 |
|
| 605 |
return $languages; |
| 606 |
} |
| 607 |
|
