re are truncated characters, the use of
* the null-coalescing operator with "\xC0" is a convenience for skipping
* length checks on every continuation bytes. This works because 0xC0 is
* always invalid in a UTF-8 string, meaning that if the string has been
* truncated, it will find 0xC0 and reject as invalid UTF-8.
*
* > [The following table] lists all of the byte sequences that are well-formed
* > in UTF-8. A range of byte values such as A0..BF indicates that any byte
* > from A0 to BF (inclusive) is well-formed in that position. Any byte value
* > outside of the ranges listed is ill-formed.
*
* > Table 3-7. Well-Formed UTF-8 Byte Sequences
* ╭─────────────────────┬────────────┬──────────────┬─────────────┬──────────────╮
* │ Code Points │ First Byte │ Second Byte │ Third Byte │ Fourth Byte │
* ├─────────────────────┼────────────┼──────────────┼─────────────┼──────────────┤
* │ U+0000..U+007F │ 00..7F │ │ │ │
* │ U+0080..U+07FF │ C2..DF │ 80..BF │ │ │
* │ U+0800..U+0FFF │ E0 │ A0..BF │ 80..BF │ │
* │ U+1000..U+CFFF │ E1..EC │ 80..BF │ 80..BF │ │
* │ U+D000..U+D7FF │ ED │ 80..9F │ 80..BF │ │
* │ U+E000..U+FFFF │ EE..EF │ 80..BF │ 80..BF │ │
* │ U+10000..U+3FFFF │ F0 │ 90..BF │ 80..BF │ 80..BF │
* │ U+40000..U+FFFFF │ F1..F3 │ 80..BF │ 80..BF │ 80..BF │
* │ U+100000..U+10FFFF │ F4 │ 80..8F │ 80..BF │ 80..BF │
* ╰─────────────────────┴────────────┴──────────────┴─────────────┴──────────────╯
*
* @see https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-3/#G27506
*/
// Valid two-byte code points.
$b1 = ord( $bytes[ $i ] );
$b2 = ord( $bytes[ $i + 1 ] ?? "\xC0" );
if ( $b1 >= 0xC2 && $b1 <= 0xDF && $b2 >= 0x80 && $b2 <= 0xBF ) {
++$count;
++$i;
continue;
}
// Valid three-byte code points.
$b3 = ord( $bytes[ $i + 2 ] ?? "\xC0" );
if ( $b3 < 0x80 || $b3 > 0xBF ) {
goto invalid_utf8;
}
if (
( 0xE0 === $b1 && $b2 >= 0xA0 && $b2 <= 0xBF ) ||
( $b1 >= 0xE1 && $b1 <= 0xEC && $b2 >= 0x80 && $b2 <= 0xBF ) ||
( 0xED === $b1 && $b2 >= 0x80 && $b2 <= 0x9F ) ||
( $b1 >= 0xEE && $b1 <= 0xEF && $b2 >= 0x80 && $b2 <= 0xBF )
) {
++$count;
$i += 2;
// Covers the range U+FDD0–U+FDEF, U+FFFE, U+FFFF.
if ( 0xEF === $b1 ) {
$has_noncharacters |= (
( 0xB7 === $b2 && $b3 >= 0x90 && $b3 <= 0xAF ) ||
( 0xBF === $b2 && ( 0xBE === $b3 || 0xBF === $b3 ) )
);
}
continue;
}
// Valid four-byte code points.
$b4 = ord( $bytes[ $i + 3 ] ?? "\xC0" );
if ( $b4 < 0x80 || $b4 > 0xBF ) {
goto invalid_utf8;
}
if (
( 0xF0 === $b1 && $b2 >= 0x90 && $b2 <= 0xBF ) ||
( $b1 >= 0xF1 && $b1 <= 0xF3 && $b2 >= 0x80 && $b2 <= 0xBF ) ||
( 0xF4 === $b1 && $b2 >= 0x80 && $b2 <= 0x8F )
) {
++$count;
$i += 3;
// Covers U+1FFFE, U+1FFFF, U+2FFFE, U+2FFFF, …, U+10FFFE, U+10FFFF.
$has_noncharacters |= (
( 0x0F === ( $b2 & 0x0F ) ) &&
0xBF === $b3 &&
( 0xBE === $b4 || 0xBF === $b4 )
);
continue;
}
/**
* When encountering invalid byte sequences, Unicode suggests finding the
* maximal subpart of a text and replacing that subpart with a single
* replacement character.
*
* > This practice is more secure because it does not result in the
* > conversion consuming parts of valid sequences as though they were
* > invalid. It also guarantees at least one replacement character will
* > occur for each instance of an invalid sequence in the original text.
* > Furthermore, this practice can be defined consistently for better
* > interoperability between different implementations of conversion.
*
* @see https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-5/#G40630
*/
invalid_utf8:
$at = $i;
$invalid_length = 1;
// Single-byte and two-byte characters.
if ( ( 0x00 === ( $b1 & 0x80 ) ) || ( 0xC0 === ( $b1 & 0xE0 ) ) ) {
return $count;
}
$b2 = ord( $bytes[ $i + 1 ] ?? "\xC0" );
$b3 = ord( $bytes[ $i + 2 ] ?? "\xC0" );
// Find the maximal subpart and skip past it.
if ( 0xE0 === ( $b1 & 0xF0 ) ) {
// Three-byte characters.
$b2_valid = (
( 0xE0 === $b1 && $b2 >= 0xA0 && $b2 <= 0xBF ) ||
( $b1 >= 0xE1 && $b1 <= 0xEC && $b2 >= 0x80 && $b2 <= 0xBF ) ||
( 0xED === $b1 && $b2 >= 0x80 && $b2 <= 0x9F ) ||
( $b1 >= 0xEE && $b1 <= 0xEF && $b2 >= 0x80 && $b2 <= 0xBF )
);
$invalid_length = min( $end - $i, $b2_valid ? 2 : 1 );
return $count;
} elseif ( 0xF0 === ( $b1 & 0xF8 ) ) {
// Four-byte characters.
$b2_valid = (
( 0xF0 === $b1 && $b2 >= 0x90 && $b2 <= 0xBF ) ||
( $b1 >= 0xF1 && $b1 <= 0xF3 && $b2 >= 0x80 && $b2 <= 0xBF ) ||
( 0xF4 === $b1 && $b2 >= 0x80 && $b2 <= 0x8F )
);
$b3_valid = $b3 >= 0x80 && $b3 <= 0xBF;
$invalid_length = min( $end - $i, $b2_valid ? ( $b3_valid ? 3 : 2 ) : 1 );
return $count;
}
return $count;
}
$at = $i;
return $count;
}
/**
* Fallback mechanism for safely validating UTF-8 bytes.
*
* @since 6.9.0
* @access private
*
* @see wp_is_valid_utf8()
*
* @param string $bytes String which might contain text encoded as UTF-8.
* @return bool Whether the provided bytes can decode as valid UTF-8.
*/
function _wp_is_valid_utf8_fallback( string $bytes ): bool {
$bytes_length = strlen( $bytes );
if ( 0 === $bytes_length ) {
return true;
}
$next_byte_at = 0;
$invalid_length = 0;
_wp_scan_utf8( $bytes, $next_byte_at, $invalid_length );
return $bytes_length === $next_byte_at && 0 === $invalid_length;
}
/**
* Fallback mechanism for replacing invalid spans of UTF-8 bytes.
*
* Example:
*
* 'Pi�a' === _wp_scrub_utf8_fallback( "Pi\xF1a" ); // “ñ” is 0xF1 in Windows-1252.
*
* @since 6.9.0
* @access private
*
* @see wp_scrub_utf8()
*
* @param string $bytes UTF-8 encoded string which might contain spans of invalid bytes.
* @return string Input string with spans of invalid bytes swapped with the replacement character.
*/
function _wp_scrub_utf8_fallback( string $bytes ): string {
$bytes_length = strlen( $bytes );
$next_byte_at = 0;
$was_at = 0;
$invalid_length = 0;
$scrubbed = '';
while ( $next_byte_at <= $bytes_length ) {
_wp_scan_utf8( $bytes, $next_byte_at, $invalid_length );
if ( $next_byte_at >= $bytes_length ) {
if ( 0 === $was_at ) {
return $bytes;
}
return $scrubbed . substr( $bytes, $was_at, $next_byte_at - $was_at - $invalid_length );
}
$scrubbed .= substr( $bytes, $was_at, $next_byte_at - $was_at );
$scrubbed .= "\u{FFFD}";
$next_byte_at += $invalid_length;
$was_at = $next_byte_at;
}
return $scrubbed;
}
/**
* Returns how many code points are found in the given UTF-8 string.
*
* Invalid spans of bytes count as a single code point according
* to the maximal subpart rule. This function is a fallback method
* for calling `mb_strlen( $text, 'UTF-8' )`.
*
* When negative values are provided for the byte offsets or length,
* this will always report zero code points.
*
* Example:
*
* 4 === _wp_utf8_codepoint_count( 'text' );
*
* // Groups are 'test', "\x90" as '�', 'wp', "\xE2\x80" as '�', "\xC0" as '�', and 'test'.
* 13 === _wp_utf8_codepoint_count( "test\x90wp\xE2\x80\xC0test" );
*
* @since 6.9.0
* @access private
*
* @param string $text Count code points in this string.
* @param ?int $byte_offset Start counting after this many bytes in `$text`. Must be positive.
* @param ?int $max_byte_length Optional. Stop counting after having scanned past this many bytes.
* Default is to scan until the end of the string. Must be positive.
* @return int How many code points were found.
*/
function _wp_utf8_codepoint_count( string $text, ?int $byte_offset = 0, ?int $max_byte_length = PHP_INT_MAX ): int {
if ( $byte_offset < 0 ) {
return 0;
}
$count = 0;
$at = $byte_offset;
$end = strlen( $text );
$invalid_length = 0;
$max_byte_length = min( $end - $at, $max_byte_length );
while ( $at < $end && ( $at - $byte_offset ) < $max_byte_length ) {
$count += _wp_scan_utf8( $text, $at, $invalid_length, $max_byte_length - ( $at - $byte_offset ) );
$count += $invalid_length > 0 ? 1 : 0;
$at += $invalid_length;
}
return $count;
}
/**
* Given a starting offset within a string and a maximum number of code points,
* return how many bytes are occupied by the span of characters.
*
* Invalid spans of bytes count as a single code point according to the maximal
* subpart rule. This function is a fallback method for calling
* `strlen( mb_substr( substr( $text, $at ), 0, $max_code_points ) )`.
*
* @since 6.9.0
* @access private
*
* @param string $text Count bytes of span in this text.
* @param int $byte_offset Start counting at this byte offset.
* @param int $max_code_points Stop counting after this many code points have been seen,
* or at the end of the string.
* @param ?int $found_code_points Optional. Will be set to number of found code points in
* span, as this might be smaller than the maximum count if
* the string is not long enough.
* @return int Number of bytes spanned by the code points.
*/
function _wp_utf8_codepoint_span( string $text, int $byte_offset, int $max_code_points, ?int &$found_code_points = 0 ): int {
$was_at = $byte_offset;
$invalid_length = 0;
$end = strlen( $text );
$found_code_points = 0;
while ( $byte_offset < $end && $found_code_points < $max_code_points ) {
$needed = $max_code_points - $found_code_points;
$chunk_count = _wp_scan_utf8( $text, $byte_offset, $invalid_length, null, $needed );
$found_code_points += $chunk_count;
// Invalid spans only convey one code point count regardless of how long they are.
if ( 0 !== $invalid_length && $found_code_points < $max_code_points ) {
++$found_code_points;
$byte_offset += $invalid_length;
}
}
return $byte_offset - $was_at;
}
/**
* Fallback support for determining if a string contains Unicode noncharacters.
*
* @since 6.9.0
* @deprecated 7.1.0
* @access private
*
* @see \wp_has_noncharacters()
*
* @param string $text Are there noncharacters in this string?
* @return bool Whether noncharacters were found in the string.
*/
function _wp_has_noncharacters_fallback( string $text ): bool {
_deprecated_function( __FUNCTION__, '7.1.0' );
return wp_has_noncharacters( $text );
}
/**
* Converts a string from ISO-8859-1 to UTF-8, maintaining backwards compatibility
* with the deprecated function from the PHP standard library.
*
* @since 6.9.0
* @access private
*
* @see \utf8_encode()
*
* @param string $iso_8859_1_text Text treated as ISO-8859-1 (latin1) bytes.
* @return string Text converted into UTF-8.
*/
function _wp_utf8_encode_fallback( $iso_8859_1_text ) {
$iso_8859_1_text = (string) $iso_8859_1_text;
$at = 0;
$was_at = 0;
$end = strlen( $iso_8859_1_text );
$utf8 = '';
while ( $at < $end ) {
// US-ASCII bytes are identical in ISO-8859-1 and UTF-8. These are 0x00–0x7F.
$ascii_byte_count = strspn(
$iso_8859_1_text,
"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f" .
"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" .
" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f",
$at
);
if ( $ascii_byte_count > 0 ) {
$at += $ascii_byte_count;
continue;
}
// All other bytes transform into two-byte UTF-8 sequences.
$code_point = ord( $iso_8859_1_text[ $at ] );
$byte1 = chr( 0xC0 | ( $code_point >> 6 ) );
$byte2 = chr( 0x80 | ( $code_point & 0x3F ) );
$utf8 .= substr( $iso_8859_1_text, $was_at, $at - $was_at );
$utf8 .= "{$byte1}{$byte2}";
++$at;
$was_at = $at;
}
if ( 0 === $was_at ) {
return $iso_8859_1_text;
}
$utf8 .= substr( $iso_8859_1_text, $was_at );
return $utf8;
}
/**
* Converts a string from UTF-8 to ISO-8859-1, maintaining backwards compatibility
* with the deprecated function from the PHP standard library.
*
* @since 6.9.0
* @access private
*
* @see \utf8_decode()
*
* @param string $utf8_text Text treated as UTF-8 bytes.
* @return string Text converted into ISO-8859-1.
*/
function _wp_utf8_decode_fallback( $utf8_text ) {
$utf8_text = (string) $utf8_text;
$at = 0;
$was_at = 0;
$end = strlen( $utf8_text );
$iso_8859_1_text = '';
while ( $at < $end ) {
// US-ASCII bytes are identical in ISO-8859-1 and UTF-8. These are 0x00–0x7F.
$ascii_byte_count = strspn(
$utf8_text,
"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f" .
"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" .
" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f",
$at
);
if ( $ascii_byte_count > 0 ) {
$at += $ascii_byte_count;
continue;
}
$next_at = $at;
$invalid_length = 0;
$found = _wp_scan_utf8( $utf8_text, $next_at, $invalid_length, null, 1 );
$span_length = $next_at - $at;
$next_byte = '?';
if ( 1 !== $found ) {
if ( $invalid_length > 0 ) {
$next_byte = '';
goto flush_sub_part;
}
break;
}
// All convertible code points are two-bytes long.
$byte1 = ord( $utf8_text[ $at ] );
if ( 0xC0 !== ( $byte1 & 0xE0 ) ) {
goto flush_sub_part;
}
// All convertible code points are not greater than U+FF.
$byte2 = ord( $utf8_text[ $at + 1 ] );
$code_point = ( ( $byte1 & 0x1F ) << 6 ) | ( ( $byte2 & 0x3F ) );
if ( $code_point > 0xFF ) {
goto flush_sub_part;
}
$next_byte = chr( $code_point );
flush_sub_part:
$iso_8859_1_text .= substr( $utf8_text, $was_at, $at - $was_at );
$iso_8859_1_text .= $next_byte;
$at += $span_length;
$was_at = $at;
if ( $invalid_length > 0 ) {
$iso_8859_1_text .= '?';
$at += $invalid_length;
$was_at = $at;
}
}
if ( 0 === $was_at ) {
return $utf8_text;
}
$iso_8859_1_text .= substr( $utf8_text, $was_at );
return $iso_8859_1_text;
}
dle );
$key = array_search( $handle[0], $this->queue, true );
if ( false !== $key ) {
// Reset all dependencies so they must be recalculated in recurse_deps().
$this->all_queued_deps = null;
unset( $this->queue[ $key ] );
unset( $this->args[ $handle[0] ] );
} elseif ( array_key_exists( $handle[0], $this->queued_before_register ) ) {
unset( $this->queued_before_register[ $handle[0] ] );
}
}
}
/**
* Recursively search the passed dependency tree for a handle.
*
* @since 4.0.0
*
* @param string[] $queue An array of queued _WP_Dependency handles.
* @param string $handle Name of the item. Should be unique.
* @return bool Whether the handle is found after recursively searching the dependency tree.
*/
protected function recurse_deps( $queue, $handle ) {
if ( isset( $this->all_queued_deps ) ) {
return isset( $this->all_queued_deps[ $handle ] );
}
$all_deps = array_fill_keys( $queue, true );
$queues = array();
$done = array();
while ( $queue ) {
foreach ( $queue as $queued ) {
if ( ! isset( $done[ $queued ] ) && isset( $this->registered[ $queued ] ) ) {
$deps = $this->registered[ $queued ]->deps;
if ( $deps ) {
$all_deps += array_fill_keys( $deps, true );
array_push( $queues, $deps );
}
$done[ $queued ] = true;
}
}
$queue = array_pop( $queues );
}
$this->all_queued_deps = $all_deps;
return isset( $this->all_queued_deps[ $handle ] );
}
/**
* Query the list for an item.
*
* @since 2.1.0
* @since 2.6.0 Moved from `WP_Scripts`.
*
* @param string $handle Name of the item. Should be unique.
* @param string $status Optional. Status of the item to query. Default 'registered'.
* @return bool|_WP_Dependency Found, or object Item data.
*/
public function query( $handle, $status = 'registered' ) {
switch ( $status ) {
case 'registered':
case 'scripts': // Back compat.
return $this->registered[ $handle ] ?? false;
case 'enqueued':
case 'queue': // Back compat.
if ( in_array( $handle, $this->queue, true ) ) {
return true;
}
return $this->recurse_deps( $this->queue, $handle );
case 'to_do':
case 'to_print': // Back compat.
return in_array( $handle, $this->to_do, true );
case 'done':
case 'printed': // Back compat.
return in_array( $handle, $this->done, true );
}
return false;
}
/**
* Set item group, unless already in a lower group.
*
* @since 2.8.0
*
* @param string $handle Name of the item. Should be unique.
* @param bool $recursion Internal flag that calling function was called recursively.
* @param int|false $group Group level: level (int), no group (false).
* @return bool Not already in the group or a lower group.
*/
public function set_group( $handle, $recursion, $group ) {
$group = (int) $group;
if ( isset( $this->groups[ $handle ] ) && $this->groups[ $handle ] <= $group ) {
return false;
}
$this->groups[ $handle ] = $group;
return true;
}
/**
* Get etag header for cache validation.
*
* @since 6.7.0
*
* @global string $wp_version The WordPress version string.
*
* @param string[] $load Array of script or style handles to load.
* @return string Etag header.
*/
public function get_etag( $load ) {
/*
* Note: wp_get_wp_version() is not used here, as this file can be included
* via wp-admin/load-scripts.php or wp-admin/load-styles.php, in which case
* wp-includes/functions.php is not loaded.
*/
global $wp_version;
$etag = "WP:{$wp_version};";
foreach ( $load as $handle ) {
if ( ! array_key_exists( $handle, $this->registered ) ) {
continue;
}
$ver = $this->registered[ $handle ]->ver ?? $wp_version;
$etag .= "{$handle}:{$ver};";
}
/*
* This is not intended to be cryptographically secure, just a fast way to get
* a fixed length string based on the script versions. As this file does not
* load the full WordPress environment, it is not possible to use the salted
* wp_hash() function.
*/
return 'W/"' . md5( $etag ) . '"';
}
/**
* Gets a dependency warning message for a handle.
*
* @since 6.9.1
*
* @param string $handle Handle with missing dependencies.
* @param string[] $missing_dependency_handles Missing dependency handles.
* @return string Formatted, localized warning message.
*/
protected function get_dependency_warning_message( $handle, $missing_dependency_handles ) {
return sprintf(
/* translators: 1: Handle, 2: List of missing dependency handles. */
__( 'The handle "%1$s" was enqueued with dependencies that are not registered: %2$s.' ),
$handle,
implode( wp_get_list_item_separator(), $missing_dependency_handles )
);
}
}
Fatal error: Uncaught Error: Class 'WP_Dependencies' not found in /home/emdadcar/public_html/wp-includes/class-wp-scripts.php:18
Stack trace:
#0 /home/emdadcar/public_html/wp-includes/script-loader.php(26): require()
#1 /home/emdadcar/public_html/wp-settings.php(246): require('/home/emdadcar/...')
#2 /home/emdadcar/public_html/wp-config.php(111): require_once('/home/emdadcar/...')
#3 /home/emdadcar/public_html/wp-load.php(50): require_once('/home/emdadcar/...')
#4 /home/emdadcar/public_html/wp-blog-header.php(13): require_once('/home/emdadcar/...')
#5 /home/emdadcar/public_html/index.php(17): require('/home/emdadcar/...')
#6 {main}
thrown in /home/emdadcar/public_html/wp-includes/class-wp-scripts.php on line 18
Fatal error: Uncaught Error: Call to a member function set() on null in /home/emdadcar/public_html/wp-includes/l10n.php:857
Stack trace:
#0 /home/emdadcar/public_html/wp-includes/l10n.php(960): load_textdomain('default', '/home/emdadcar/...', 'fa_IR')
#1 /home/emdadcar/public_html/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler->handle()
#3 {main}
thrown in /home/emdadcar/public_html/wp-includes/l10n.php on line 857