<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 1.2.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Utility;
use InvalidArgumentException;
/**
* Text handling methods.
*/
class Text
{
/**
* Default transliterator.
*
* @var \Transliterator Transliterator instance.
*/
protected static $_defaultTransliterator;
/**
* Default transliterator id string.
*
* @var string $_defaultTransliteratorId Transliterator identifier string.
*/
protected static $_defaultTransliteratorId = 'Any-Latin; Latin-ASCII; [\u0080-\u7fff] remove';
/**
* Default html tags who must not be count for truncate text.
*
* @var array
*/
protected static $_defaultHtmlNoCount = [
'style',
'script'
];
/**
* Generate a random UUID version 4
*
* Warning: This method should not be used as a random seed for any cryptographic operations.
* Instead you should use the openssl or mcrypt extensions.
*
* It should also not be used to create identifiers that have security implications, such as
* 'unguessable' URL identifiers. Instead you should use `Security::randomBytes()` for that.
*
* @see https://www.ietf.org/rfc/rfc4122.txt
* @return string RFC 4122 UUID
* @copyright Matt Farina MIT License https://github.com/lootils/uuid/blob/master/LICENSE
*/
public static function uuid()
{
$random = function_exists('random_int') ? 'random_int' : 'mt_rand';
return sprintf(
'%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
// 32 bits for "time_low"
$random(0, 65535),
$random(0, 65535),
// 16 bits for "time_mid"
$random(0, 65535),
// 12 bits before the 0100 of (version) 4 for "time_hi_and_version"
$random(0, 4095) | 0x4000,
// 16 bits, 8 bits for "clk_seq_hi_res",
// 8 bits for "clk_seq_low",
// two most significant bits holds zero and one for variant DCE1.1
$random(0, 0x3fff) | 0x8000,
// 48 bits for "node"
$random(0, 65535),
$random(0, 65535),
$random(0, 65535)
);
}
/**
* Tokenizes a string using $separator, ignoring any instance of $separator that appears between
* $leftBound and $rightBound.
*
* @param string $data The data to tokenize.
* @param string $separator The token to split the data on.
* @param string $leftBound The left boundary to ignore separators in.
* @param string $rightBound The right boundary to ignore separators in.
* @return array|string Array of tokens in $data or original input if empty.
*/
public static function tokenize($data, $separator = ',', $leftBound = '(', $rightBound = ')')
{
if (empty($data)) {
return [];
}
$depth = 0;
$offset = 0;
$buffer = '';
$results = [];
$length = mb_strlen($data);
$open = false;
while ($offset <= $length) {
$tmpOffset = -1;
$offsets = [
mb_strpos($data, $separator, $offset),
mb_strpos($data, $leftBound, $offset),
mb_strpos($data, $rightBound, $offset)
];
for ($i = 0; $i < 3; $i++) {
if ($offsets[$i] !== false && ($offsets[$i] < $tmpOffset || $tmpOffset == -1)) {
$tmpOffset = $offsets[$i];
}
}
if ($tmpOffset !== -1) {
$buffer .= mb_substr($data, $offset, $tmpOffset - $offset);
$char = mb_substr($data, $tmpOffset, 1);
if (!$depth && $char === $separator) {
$results[] = $buffer;
$buffer = '';
} else {
$buffer .= $char;
}
if ($leftBound !== $rightBound) {
if ($char === $leftBound) {
$depth++;
}
if ($char === $rightBound) {
$depth--;
}
} else {
if ($char === $leftBound) {
if (!$open) {
$depth++;
$open = true;
} else {
$depth--;
$open = false;
}
}
}
$tmpOffset += 1;
$offset = $tmpOffset;
} else {
$results[] = $buffer . mb_substr($data, $offset);
$offset = $length + 1;
}
}
if (empty($results) && !empty($buffer)) {
$results[] = $buffer;
}
if (!empty($results)) {
return array_map('trim', $results);
}
return [];
}
/**
* Replaces variable placeholders inside a $str with any given $data. Each key in the $data array
* corresponds to a variable placeholder name in $str.
* Example:
* ```
* Text::insert(':name is :age years old.', ['name' => 'Bob', 'age' => '65']);
* ```
* Returns: Bob is 65 years old.
*
* Available $options are:
*
* - before: The character or string in front of the name of the variable placeholder (Defaults to `:`)
* - after: The character or string after the name of the variable placeholder (Defaults to null)
* - escape: The character or string used to escape the before character / string (Defaults to `\`)
* - format: A regex to use for matching variable placeholders. Default is: `/(?<!\\)\:%s/`
* (Overwrites before, after, breaks escape / clean)
* - clean: A boolean or array with instructions for Text::cleanInsert
*
* @param string $str A string containing variable placeholders
* @param array $data A key => val array where each key stands for a placeholder variable name
* to be replaced with val
* @param array $options An array of options, see description above
* @return string
*/
public static function insert($str, $data, array $options = [])
{
$defaults = [
'before' => ':', 'after' => null, 'escape' => '\\', 'format' => null, 'clean' => false
];
$options += $defaults;
$format = $options['format'];
$data = (array)$data;
if (empty($data)) {
return $options['clean'] ? static::cleanInsert($str, $options) : $str;
}
if (!isset($format)) {
$format = sprintf(
'/(?<!%s)%s%%s%s/',
preg_quote($options['escape'], '/'),
str_replace('%', '%%', preg_quote($options['before'], '/')),
str_replace('%', '%%', preg_quote($options['after'], '/'))
);
}
if (strpos($str, '?') !== false && is_numeric(key($data))) {
$offset = 0;
while (($pos = strpos($str, '?', $offset)) !== false) {
$val = array_shift($data);
$offset = $pos + strlen($val);
$str = substr_replace($str, $val, $pos, 1);
}
return $options['clean'] ? static::cleanInsert($str, $options) : $str;
}
$dataKeys = array_keys($data);
$hashKeys = array_map('crc32', $dataKeys);
$tempData = array_combine($dataKeys, $hashKeys);
krsort($tempData);
foreach ($tempData as $key => $hashVal) {
$key = sprintf($format, preg_quote($key, '/'));
$str = preg_replace($key, $hashVal, $str);
}
$dataReplacements = array_combine($hashKeys, array_values($data));
foreach ($dataReplacements as $tmpHash => $tmpValue) {
$tmpValue = is_array($tmpValue) ? '' : $tmpValue;
$str = str_replace($tmpHash, $tmpValue, $str);
}
if (!isset($options['format']) && isset($options['before'])) {
$str = str_replace($options['escape'] . $options['before'], $options['before'], $str);
}
return $options['clean'] ? static::cleanInsert($str, $options) : $str;
}
/**
* Cleans up a Text::insert() formatted string with given $options depending on the 'clean' key in
* $options. The default method used is text but html is also available. The goal of this function
* is to replace all whitespace and unneeded markup around placeholders that did not get replaced
* by Text::insert().
*
* @param string $str String to clean.
* @param array $options Options list.
* @return string
* @see \Cake\Utility\Text::insert()
*/
public static function cleanInsert($str, array $options)
{
$clean = $options['clean'];
if (!$clean) {
return $str;
}
if ($clean === true) {
$clean = ['method' => 'text'];
}
if (!is_array($clean)) {
$clean = ['method' => $options['clean']];
}
switch ($clean['method']) {
case 'html':
$clean += [
'word' => '[\w,.]+',
'andText' => true,
'replacement' => '',
];
$kleenex = sprintf(
'/[\s]*[a-z]+=(")(%s%s%s[\s]*)+\\1/i',
preg_quote($options['before'], '/'),
$clean['word'],
preg_quote($options['after'], '/')
);
$str = preg_replace($kleenex, $clean['replacement'], $str);
if ($clean['andText']) {
$options['clean'] = ['method' => 'text'];
$str = static::cleanInsert($str, $options);
}
break;
case 'text':
$clean += [
'word' => '[\w,.]+',
'gap' => '[\s]*(?:(?:and|or)[\s]*)?',
'replacement' => '',
];
$kleenex = sprintf(
'/(%s%s%s%s|%s%s%s%s)/',
preg_quote($options['before'], '/'),
$clean['word'],
preg_quote($options['after'], '/'),
$clean['gap'],
$clean['gap'],
preg_quote($options['before'], '/'),
$clean['word'],
preg_quote($options['after'], '/')
);
$str = preg_replace($kleenex, $clean['replacement'], $str);
break;
}
return $str;
}
/**
* Wraps text to a specific width, can optionally wrap at word breaks.
*
* ### Options
*
* - `width` The width to wrap to. Defaults to 72.
* - `wordWrap` Only wrap on words breaks (spaces) Defaults to true.
* - `indent` String to indent with. Defaults to null.
* - `indentAt` 0 based index to start indenting at. Defaults to 0.
*
* @param string $text The text to format.
* @param array|int $options Array of options to use, or an integer to wrap the text to.
* @return string Formatted text.
*/
public static function wrap($text, $options = [])
{
if (is_numeric($options)) {
$options = ['width' => $options];
}
$options += ['width' => 72, 'wordWrap' => true, 'indent' => null, 'indentAt' => 0];
if ($options['wordWrap']) {
$wrapped = self::wordWrap($text, $options['width'], "\n");
} else {
$wrapped = trim(chunk_split($text, $options['width'] - 1, "\n"));
}
if (!empty($options['indent'])) {
$chunks = explode("\n", $wrapped);
for ($i = $options['indentAt'], $len = count($chunks); $i < $len; $i++) {
$chunks[$i] = $options['indent'] . $chunks[$i];
}
$wrapped = implode("\n", $chunks);
}
return $wrapped;
}
/**
* Wraps a complete block of text to a specific width, can optionally wrap
* at word breaks.
*
* ### Options
*
* - `width` The width to wrap to. Defaults to 72.
* - `wordWrap` Only wrap on words breaks (spaces) Defaults to true.
* - `indent` String to indent with. Defaults to null.
* - `indentAt` 0 based index to start indenting at. Defaults to 0.
*
* @param string $text The text to format.
* @param array|int $options Array of options to use, or an integer to wrap the text to.
* @return string Formatted text.
*/
public static function wrapBlock($text, $options = [])
{
if (is_numeric($options)) {
$options = ['width' => $options];
}
$options += ['width' => 72, 'wordWrap' => true, 'indent' => null, 'indentAt' => 0];
if (!empty($options['indentAt']) && $options['indentAt'] === 0) {
$indentLength = !empty($options['indent']) ? strlen($options['indent']) : 0;
$options['width'] -= $indentLength;
return self::wrap($text, $options);
}
$wrapped = self::wrap($text, $options);
if (!empty($options['indent'])) {
$indentationLength = mb_strlen($options['indent']);
$chunks = explode("\n", $wrapped);
$count = count($chunks);
if ($count < 2) {
return $wrapped;
}
$toRewrap = '';
for ($i = $options['indentAt']; $i < $count; $i++) {
$toRewrap .= mb_substr($chunks[$i], $indentationLength) . ' ';
unset($chunks[$i]);
}
$options['width'] -= $indentationLength;
$options['indentAt'] = 0;
$rewrapped = self::wrap($toRewrap, $options);
$newChunks = explode("\n", $rewrapped);
$chunks = array_merge($chunks, $newChunks);
$wrapped = implode("\n", $chunks);
}
return $wrapped;
}
/**
* Unicode and newline aware version of wordwrap.
*
* @param string $text The text to format.
* @param int $width The width to wrap to. Defaults to 72.
* @param string $break The line is broken using the optional break parameter. Defaults to '\n'.
* @param bool $cut If the cut is set to true, the string is always wrapped at the specified width.
* @return string Formatted text.
*/
public static function wordWrap($text, $width = 72, $break = "\n", $cut = false)
{
$paragraphs = explode($break, $text);
foreach ($paragraphs as &$paragraph) {
$paragraph = static::_wordWrap($paragraph, $width, $break, $cut);
}
return implode($break, $paragraphs);
}
/**
* Unicode aware version of wordwrap as helper method.
*
* @param string $text The text to format.
* @param int $width The width to wrap to. Defaults to 72.
* @param string $break The line is broken using the optional break parameter. Defaults to '\n'.
* @param bool $cut If the cut is set to true, the string is always wrapped at the specified width.
* @return string Formatted text.
*/
protected static function _wordWrap($text, $width = 72, $break = "\n", $cut = false)
{
if ($cut) {
$parts = [];
while (mb_strlen($text) > 0) {
$part = mb_substr($text, 0, $width);
$parts[] = trim($part);
$text = trim(mb_substr($text, mb_strlen($part)));
}
return implode($break, $parts);
}
$parts = [];
while (mb_strlen($text) > 0) {
if ($width >= mb_strlen($text)) {
$parts[] = trim($text);
break;
}
$part = mb_substr($text, 0, $width);
$nextChar = mb_substr($text, $width, 1);
if ($nextChar !== ' ') {
$breakAt = mb_strrpos($part, ' ');
if ($breakAt === false) {
$breakAt = mb_strpos($text, ' ', $width);
}
if ($breakAt === false) {
$parts[] = trim($text);
break;
}
$part = mb_substr($text, 0, $breakAt);
}
$part = trim($part);
$parts[] = $part;
$text = trim(mb_substr($text, mb_strlen($part)));
}
return implode($break, $parts);
}
/**
* Highlights a given phrase in a text. You can specify any expression in highlighter that
* may include the \1 expression to include the $phrase found.
*
* ### Options:
*
* - `format` The piece of HTML with that the phrase will be highlighted
* - `html` If true, will ignore any HTML tags, ensuring that only the correct text is highlighted
* - `regex` A custom regex rule that is used to match words, default is '|$tag|iu'
* - `limit` A limit, optional, defaults to -1 (none)
*
* @param string $text Text to search the phrase in.
* @param string|array $phrase The phrase or phrases that will be searched.
* @param array $options An array of HTML attributes and options.
* @return string The highlighted text
* @link https://book.cakephp.org/3.0/en/core-libraries/text.html#highlighting-substrings
*/
public static function highlight($text, $phrase, array $options = [])
{
if (empty($phrase)) {
return $text;
}
$defaults = [
'format' => '<span class="highlight">\1</span>',
'html' => false,
'regex' => '|%s|iu',
'limit' => -1,
];
$options += $defaults;
$html = $format = $ellipsis = $exact = $limit = null;
extract($options);
if (is_array($phrase)) {
$replace = [];
$with = [];
foreach ($phrase as $key => $segment) {
$segment = '(' . preg_quote($segment, '|') . ')';
if ($html) {
$segment = "(?![^<]+>)$segment(?![^<]+>)";
}
$with[] = is_array($format) ? $format[$key] : $format;
$replace[] = sprintf($options['regex'], $segment);
}
return preg_replace($replace, $with, $text, $limit);
}
$phrase = '(' . preg_quote($phrase, '|') . ')';
if ($html) {
$phrase = "(?![^<]+>)$phrase(?![^<]+>)";
}
return preg_replace(sprintf($options['regex'], $phrase), $format, $text, $limit);
}
/**
* Strips given text of all links (<a href=....).
*
* *Warning* This method is not an robust solution in preventing XSS
* or malicious HTML.
*
* @param string $text Text
* @return string The text without links
* @deprecated 3.2.12 This method will be removed in 4.0.0
*/
public static function stripLinks($text)
{
deprecationWarning('This method will be removed in 4.0.0.');
do {
$text = preg_replace('#</?a([/\s][^>]*)?(>|$)#i', '', $text, -1, $count);
} while ($count);
return $text;
}
/**
* Truncates text starting from the end.
*
* Cuts a string to the length of $length and replaces the first characters
* with the ellipsis if the text is longer than length.
*
* ### Options:
*
* - `ellipsis` Will be used as Beginning and prepended to the trimmed string
* - `exact` If false, $text will not be cut mid-word
*
* @param string $text String to truncate.
* @param int $length Length of returned string, including ellipsis.
* @param array $options An array of options.
* @return string Trimmed string.
*/
public static function tail($text, $length = 100, array $options = [])
{
$default = [
'ellipsis' => '...', 'exact' => true
];
$options += $default;
$exact = $ellipsis = null;
extract($options);
if (mb_strlen($text) <= $length) {
return $text;
}
$truncate = mb_substr($text, mb_strlen($text) - $length + mb_strlen($ellipsis));
if (!$exact) {
$spacepos = mb_strpos($truncate, ' ');
$truncate = $spacepos === false ? '' : trim(mb_substr($truncate, $spacepos));
}
return $ellipsis . $truncate;
}
/**
* Truncates text.
*
* Cuts a string to the length of $length and replaces the last characters
* with the ellipsis if the text is longer than length.
*
* ### Options:
*
* - `ellipsis` Will be used as ending and appended to the trimmed string
* - `exact` If false, $text will not be cut mid-word
* - `html` If true, HTML tags would be handled correctly
* - `trimWidth` If true, $text will be truncated with the width
*
* @param string $text String to truncate.
* @param int $length Length of returned string, including ellipsis.
* @param array $options An array of HTML attributes and options.
* @return string Trimmed string.
* @link https://book.cakephp.org/3.0/en/core-libraries/text.html#truncating-text
*/
public static function truncate($text, $length = 100, array $options = [])
{
$default = [
'ellipsis' => '...', 'exact' => true, 'html' => false, 'trimWidth' => false,
];
if (!empty($options['html']) && strtolower(mb_internal_encoding()) === 'utf-8') {
$default['ellipsis'] = "\xe2\x80\xa6";
}
$options += $default;
$prefix = '';
$suffix = $options['ellipsis'];
if ($options['html']) {
$ellipsisLength = self::_strlen(strip_tags($options['ellipsis']), $options);
$truncateLength = 0;
$totalLength = 0;
$openTags = [];
$truncate = '';
preg_match_all('/(<\/?([\w+]+)[^>]*>)?([^<>]*)/', $text, $tags, PREG_SET_ORDER);
foreach ($tags as $tag) {
$contentLength = 0;
if (!in_array($tag[2], static::$_defaultHtmlNoCount, true)) {
$contentLength = self::_strlen($tag[3], $options);
}
if ($truncate === '') {
if (!preg_match('/img|br|input|hr|area|base|basefont|col|frame|isindex|link|meta|param/i', $tag[2])) {
if (preg_match('/<[\w]+[^>]*>/', $tag[0])) {
array_unshift($openTags, $tag[2]);
} elseif (preg_match('/<\/([\w]+)[^>]*>/', $tag[0], $closeTag)) {
$pos = array_search($closeTag[1], $openTags);
if ($pos !== false) {
array_splice($openTags, $pos, 1);
}
}
}
$prefix .= $tag[1];
if ($totalLength + $contentLength + $ellipsisLength > $length) {
$truncate = $tag[3];
$truncateLength = $length - $totalLength;
} else {
$prefix .= $tag[3];
}
}
$totalLength += $contentLength;
if ($totalLength > $length) {
break;
}
}
if ($totalLength <= $length) {
return $text;
}
$text = $truncate;
$length = $truncateLength;
foreach ($openTags as $tag) {
$suffix .= '</' . $tag . '>';
}
} else {
if (self::_strlen($text, $options) <= $length) {
return $text;
}
$ellipsisLength = self::_strlen($options['ellipsis'], $options);
}
$result = self::_substr($text, 0, $length - $ellipsisLength, $options);
if (!$options['exact']) {
if (self::_substr($text, $length - $ellipsisLength, 1, $options) !== ' ') {
$result = self::_removeLastWord($result);
}
// If result is empty, then we don't need to count ellipsis in the cut.
if (!strlen($result)) {
$result = self::_substr($text, 0, $length, $options);
}
}
return $prefix . $result . $suffix;
}
/**
* Truncate text with specified width.
*
* @param string $text String to truncate.
* @param int $length Length of returned string, including ellipsis.
* @param array $options An array of HTML attributes and options.
* @return string Trimmed string.
* @see \Cake\Utility\Text::truncate()
*/
public static function truncateByWidth($text, $length = 100, array $options = [])
{
return static::truncate($text, $length, ['trimWidth' => true] + $options);
}
/**
* Get string length.
*
* ### Options:
*
* - `html` If true, HTML entities will be handled as decoded characters.
* - `trimWidth` If true, the width will return.
*
* @param string $text The string being checked for length
* @param array $options An array of options.
* @return int
*/
protected static function _strlen($text, array $options)
{
if (empty($options['trimWidth'])) {
$strlen = 'mb_strlen';
} else {
$strlen = 'mb_strwidth';
}
if (empty($options['html'])) {
return $strlen($text);
}
$pattern = '/&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};/i';
$replace = preg_replace_callback(
$pattern,
function ($match) use ($strlen) {
$utf8 = html_entity_decode($match[0], ENT_HTML5 | ENT_QUOTES, 'UTF-8');
return str_repeat(' ', $strlen($utf8, 'UTF-8'));
},
$text
);
return $strlen($replace);
}
/**
* Return part of a string.
*
* ### Options:
*
* - `html` If true, HTML entities will be handled as decoded characters.
* - `trimWidth` If true, will be truncated with specified width.
*
* @param string $text The input string.
* @param int $start The position to begin extracting.
* @param int $length The desired length.
* @param array $options An array of options.
* @return string
*/
protected static function _substr($text, $start, $length, array $options)
{
if (empty($options['trimWidth'])) {
$substr = 'mb_substr';
} else {
$substr = 'mb_strimwidth';
}
$maxPosition = self::_strlen($text, ['trimWidth' => false] + $options);
if ($start < 0) {
$start += $maxPosition;
if ($start < 0) {
$start = 0;
}
}
if ($start >= $maxPosition) {
return '';
}
if ($length === null) {
$length = self::_strlen($text, $options);
}
if ($length < 0) {
$text = self::_substr($text, $start, null, $options);
$start = 0;
$length += self::_strlen($text, $options);
}
if ($length <= 0) {
return '';
}
if (empty($options['html'])) {
return (string)$substr($text, $start, $length);
}
$totalOffset = 0;
$totalLength = 0;
$result = '';
$pattern = '/(&[0-9a-z]{2,8};|&#[0-9]{1,7};|&#x[0-9a-f]{1,6};)/i';
$parts = preg_split($pattern, $text, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
foreach ($parts as $part) {
$offset = 0;
if ($totalOffset < $start) {
$len = self::_strlen($part, ['trimWidth' => false] + $options);
if ($totalOffset + $len <= $start) {
$totalOffset += $len;
continue;
}
$offset = $start - $totalOffset;
$totalOffset = $start;
}
$len = self::_strlen($part, $options);
if ($offset !== 0 || $totalLength + $len > $length) {
if (strpos($part, '&') === 0 && preg_match($pattern, $part)
&& $part !== html_entity_decode($part, ENT_HTML5 | ENT_QUOTES, 'UTF-8')
) {
// Entities cannot be passed substr.
continue;
}
$part = $substr($part, $offset, $length - $totalLength);
$len = self::_strlen($part, $options);
}
$result .= $part;
$totalLength += $len;
if ($totalLength >= $length) {
break;
}
}
return $result;
}
/**
* Removes the last word from the input text.
*
* @param string $text The input text
* @return string
*/
protected static function _removeLastWord($text)
{
$spacepos = mb_strrpos($text, ' ');
if ($spacepos !== false) {
$lastWord = mb_strrpos($text, $spacepos);
// Some languages are written without word separation.
// We recognize a string as a word if it doesn't contain any full-width characters.
if (mb_strwidth($lastWord) === mb_strlen($lastWord)) {
$text = mb_substr($text, 0, $spacepos);
}
return $text;
}
return '';
}
/**
* Extracts an excerpt from the text surrounding the phrase with a number of characters on each side
* determined by radius.
*
* @param string $text String to search the phrase in
* @param string $phrase Phrase that will be searched for
* @param int $radius The amount of characters that will be returned on each side of the founded phrase
* @param string $ellipsis Ending that will be appended
* @return string Modified string
* @link https://book.cakephp.org/3.0/en/core-libraries/text.html#extracting-an-excerpt
*/
public static function excerpt($text, $phrase, $radius = 100, $ellipsis = '...')
{
if (empty($text) || empty($phrase)) {
return static::truncate($text, $radius * 2, ['ellipsis' => $ellipsis]);
}
$append = $prepend = $ellipsis;
$phraseLen = mb_strlen($phrase);
$textLen = mb_strlen($text);
$pos = mb_stripos($text, $phrase);
if ($pos === false) {
return mb_substr($text, 0, $radius) . $ellipsis;
}
$startPos = $pos - $radius;
if ($startPos <= 0) {
$startPos = 0;
$prepend = '';
}
$endPos = $pos + $phraseLen + $radius;
if ($endPos >= $textLen) {
$endPos = $textLen;
$append = '';
}
$excerpt = mb_substr($text, $startPos, $endPos - $startPos);
$excerpt = $prepend . $excerpt . $append;
return $excerpt;
}
/**
* Creates a comma separated list where the last two items are joined with 'and', forming natural language.
*
* @param array $list The list to be joined.
* @param string|null $and The word used to join the last and second last items together with. Defaults to 'and'.
* @param string $separator The separator used to join all the other items together. Defaults to ', '.
* @return string The glued together string.
* @link https://book.cakephp.org/3.0/en/core-libraries/text.html#converting-an-array-to-sentence-form
*/
public static function toList(array $list, $and = null, $separator = ', ')
{
if ($and === null) {
$and = __d('cake', 'and');
}
if (count($list) > 1) {
return implode($separator, array_slice($list, null, -1)) . ' ' . $and . ' ' . array_pop($list);
}
return array_pop($list);
}
/**
* Check if the string contain multibyte characters
*
* @param string $string value to test
* @return bool
*/
public static function isMultibyte($string)
{
$length = strlen($string);
for ($i = 0; $i < $length; $i++) {
$value = ord($string[$i]);
if ($value > 128) {
return true;
}
}
return false;
}
/**
* Converts a multibyte character string
* to the decimal value of the character
*
* @param string $string String to convert.
* @return array
*/
public static function utf8($string)
{
$map = [];
$values = [];
$find = 1;
$length = strlen($string);
for ($i = 0; $i < $length; $i++) {
$value = ord($string[$i]);
if ($value < 128) {
$map[] = $value;
} else {
if (empty($values)) {
$find = ($value < 224) ? 2 : 3;
}
$values[] = $value;
if (count($values) === $find) {
if ($find == 3) {
$map[] = (($values[0] % 16) * 4096) + (($values[1] % 64) * 64) + ($values[2] % 64);
} else {
$map[] = (($values[0] % 32) * 64) + ($values[1] % 64);
}
$values = [];
$find = 1;
}
}
}
return $map;
}
/**
* Converts the decimal value of a multibyte character string
* to a string
*
* @param array $array Array
* @return string
*/
public static function ascii(array $array)
{
$ascii = '';
foreach ($array as $utf8) {
if ($utf8 < 128) {
$ascii .= chr($utf8);
} elseif ($utf8 < 2048) {
$ascii .= chr(192 + (($utf8 - ($utf8 % 64)) / 64));
$ascii .= chr(128 + ($utf8 % 64));
} else {
$ascii .= chr(224 + (($utf8 - ($utf8 % 4096)) / 4096));
$ascii .= chr(128 + ((($utf8 % 4096) - ($utf8 % 64)) / 64));
$ascii .= chr(128 + ($utf8 % 64));
}
}
return $ascii;
}
/**
* Converts filesize from human readable string to bytes
*
* @param string $size Size in human readable string like '5MB', '5M', '500B', '50kb' etc.
* @param mixed $default Value to be returned when invalid size was used, for example 'Unknown type'
* @return mixed Number of bytes as integer on success, `$default` on failure if not false
* @throws \InvalidArgumentException On invalid Unit type.
* @link https://book.cakephp.org/3.0/en/core-libraries/text.html#Cake\Utility\Text::parseFileSize
*/
public static function parseFileSize($size, $default = false)
{
if (ctype_digit($size)) {
return (int)$size;
}
$size = strtoupper($size);
$l = -2;
$i = array_search(substr($size, -2), ['KB', 'MB', 'GB', 'TB', 'PB']);
if ($i === false) {
$l = -1;
$i = array_search(substr($size, -1), ['K', 'M', 'G', 'T', 'P']);
}
if ($i !== false) {
$size = (float)substr($size, 0, $l);
return $size * pow(1024, $i + 1);
}
if (substr($size, -1) === 'B' && ctype_digit(substr($size, 0, -1))) {
$size = substr($size, 0, -1);
return (int)$size;
}
if ($default !== false) {
return $default;
}
throw new InvalidArgumentException('No unit type.');
}
/**
* Get the default transliterator.
*
* @return \Transliterator|null Either a Transliterator instance, or `null`
* in case no transliterator has been set yet.
* @since 3.7.0
*/
public static function getTransliterator()
{
return static::$_defaultTransliterator;
}
/**
* Set the default transliterator.
*
* @param \Transliterator $transliterator A `Transliterator` instance.
* @return void
* @since 3.7.0
*/
public static function setTransliterator(\Transliterator $transliterator)
{
static::$_defaultTransliterator = $transliterator;
}
/**
* Get default transliterator identifier string.
*
* @return string Transliterator identifier.
*/
public static function getTransliteratorId()
{
return static::$_defaultTransliteratorId;
}
/**
* Set default transliterator identifier string.
*
* @param string $transliteratorId Transliterator identifier.
* @return void
*/
public static function setTransliteratorId($transliteratorId)
{
static::setTransliterator(transliterator_create($transliteratorId));
static::$_defaultTransliteratorId = $transliteratorId;
}
/**
* Transliterate string.
*
* @param string $string String to transliterate.
* @param \Transliterator|string|null $transliterator Either a Transliterator
* instance, or a transliterator identifier string. If `null`, the default
* transliterator (identifier) set via `setTransliteratorId()` or
* `setTransliterator()` will be used.
* @return string
* @see https://secure.php.net/manual/en/transliterator.transliterate.php
*/
public static function transliterate($string, $transliterator = null)
{
if (!$transliterator) {
$transliterator = static::$_defaultTransliterator ?: static::$_defaultTransliteratorId;
}
return transliterator_transliterate($transliterator, $string);
}
/**
* Returns a string with all spaces converted to dashes (by default),
* characters transliterated to ASCII characters, and non word characters removed.
*
* ### Options:
*
* - `replacement`: Replacement string. Default '-'.
* - `transliteratorId`: A valid transliterator id string.
* If `null` (default) the transliterator (identifier) set via
* `setTransliteratorId()` or `setTransliterator()` will be used.
* If `false` no transliteration will be done, only non words will be removed.
* - `preserve`: Specific non-word character to preserve. Default `null`.
* For e.g. this option can be set to '.' to generate clean file names.
*
* @param string $string the string you want to slug
* @param array $options If string it will be use as replacement character
* or an array of options.
* @return string
* @see setTransliterator()
* @see setTransliteratorId()
*/
public static function slug($string, $options = [])
{
if (is_string($options)) {
$options = ['replacement' => $options];
}
$options += [
'replacement' => '-',
'transliteratorId' => null,
'preserve' => null
];
if ($options['transliteratorId'] !== false) {
$string = static::transliterate($string, $options['transliteratorId']);
}
$regex = '^\s\p{Ll}\p{Lm}\p{Lo}\p{Lt}\p{Lu}\p{Nd}';
if ($options['preserve']) {
$regex .= preg_quote($options['preserve'], '/');
}
$quotedReplacement = preg_quote($options['replacement'], '/');
$map = [
'/[' . $regex . ']/mu' => ' ',
'/[\s]+/mu' => $options['replacement'],
sprintf('/^[%s]+|[%s]+$/', $quotedReplacement, $quotedReplacement) => '',
];
$string = preg_replace(array_keys($map), $map, $string);
return $string;
}
}