Viewing file:  Hyphenator.php (4.97 KB) -rw-r--r--
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<?php
namespace Mpdf;
class Hyphenator
{
/**
* @var \Mpdf\Mpdf
*/
private $mpdf;
private $patterns;
private $dictionary;
private $words;
private $loadedPatterns;
/**
* @var bool
*/
private $dictionaryLoaded;
public function __construct(Mpdf $mpdf)
{
$this->mpdf = $mpdf;
$this->dictionaryLoaded = false;
$this->patterns = [];
$this->dictionary = [];
$this->words = [];
}
/**
* @param string $word
* @param int $currptr
*
* @return int
*/
public function hyphenateWord($word, $currptr)
{
// Do everything inside this function in utf-8
// Don't hyphenate web addresses
if (preg_match('/^(http:|https:|www\.)/', $word)) {
return -1;
}
// Don't hyphenate email addresses
if (preg_match('/^[a-zA-Z0-9-_.+]+@[a-zA-Z0-9-_.]+/', $word)) {
return -1;
}
$ptr = -1;
if (!$this->dictionaryLoaded) {
$this->loadDictionary();
}
if (!in_array($this->mpdf->SHYlang, $this->mpdf->SHYlanguages)) {
return -1;
}
// If no pattern loaded or not the best one
if (!$this->patternsLoaded()) {
$this->loadPatterns();
}
if ($this->mpdf->usingCoreFont) {
$word = mb_convert_encoding($word, 'UTF-8', $this->mpdf->mb_enc);
}
$prepre = '';
$postpost = '';
$startpunctuation = "\xc2\xab\xc2\xbf\xe2\x80\x98\xe2\x80\x9b\xe2\x80\x9c\xe2\x80\x9f";
$endpunctuation = "\xe2\x80\x9e\xe2\x80\x9d\xe2\x80\x9a\xe2\x80\x99\xc2\xbb";
if (preg_match('/^(["\'' . $startpunctuation . '])+(.{' . $this->mpdf->SHYcharmin . ',})$/u', $word, $m)) {
$prepre = $m[1];
$word = $m[2];
}
if (preg_match('/^(.{' . $this->mpdf->SHYcharmin . ',})([\'\.,;:!?"' . $endpunctuation . ']+)$/u', $word, $m)) {
$word = $m[1];
$postpost = $m[2];
}
if (mb_strlen($word, 'UTF-8') < $this->mpdf->SHYcharmin) {
return -1;
}
$success = false;
$preprelen = mb_strlen($prepre);
if (isset($this->words[mb_strtolower($word)])) {
foreach ($this->words[mb_strtolower($word)] as $i) {
if (($i + $preprelen) >= $currptr) {
break;
}
$ptr = $i + $preprelen;
$success = true;
}
}
if (!$success) {
$text_word = '_' . $word . '_';
$word_length = mb_strlen($text_word, 'UTF-8');
$text_word = mb_strtolower($text_word, 'UTF-8');
$hyphenated_word = [];
$numbers = [
'0' => true,
'1' => true,
'2' => true,
'3' => true,
'4' => true,
'5' => true,
'6' => true,
'7' => true,
'8' => true,
'9' => true
];
for ($position = 0; $position <= ($word_length - $this->mpdf->SHYcharmin); $position++) {
$maxwins = min($word_length - $position, $this->mpdf->SHYcharmax);
for ($win = $this->mpdf->SHYcharmin; $win <= $maxwins; $win++) {
if (isset($this->patterns[mb_substr($text_word, $position, $win, 'UTF-8')])) {
$pattern = $this->patterns[mb_substr($text_word, $position, $win, 'UTF-8')];
$digits = 1;
$pattern_length = mb_strlen($pattern, 'UTF-8');
for ($i = 0; $i < $pattern_length; $i++) {
$char = $pattern[$i];
if (isset($numbers[$char])) {
$zero = $i === 0 ? $position - 1 : $position + $i - $digits;
if (!isset($hyphenated_word[$zero]) || $hyphenated_word[$zero] !== $char) {
$hyphenated_word[$zero] = $char;
}
$digits++;
}
}
}
}
}
for ($i = $this->mpdf->SHYleftmin; $i <= (mb_strlen($word, 'UTF-8') - $this->mpdf->SHYrightmin); $i++) {
if (isset($hyphenated_word[$i]) && $hyphenated_word[$i] % 2 !== 0) {
if (($i + $preprelen) > $currptr) {
break;
}
$ptr = $i + $preprelen;
}
}
}
return $ptr;
}
private function patternsLoaded()
{
return !(count($this->patterns) < 1 || ($this->loadedPatterns && $this->loadedPatterns !== $this->mpdf->SHYlang));
}
private function loadPatterns()
{
$patterns = require __DIR__ . '/../data/patterns/' . $this->mpdf->SHYlang . '.php';
$patterns = explode(' ', $patterns);
$new_patterns = [];
$patternCount = count($patterns);
for ($i = 0; $i < $patternCount; $i++) {
$value = $patterns[$i];
$new_patterns[preg_replace('/[0-9]/', '', $value)] = $value;
}
$this->patterns = $new_patterns;
$this->loadedPatterns = $this->mpdf->SHYlang;
}
private function loadDictionary()
{
if (file_exists($this->mpdf->hyphenationDictionaryFile)) {
$this->dictionary = file($this->mpdf->hyphenationDictionaryFile, FILE_SKIP_EMPTY_LINES);
foreach ($this->dictionary as $entry) {
$entry = trim($entry);
$poss = [];
$offset = 0;
$p = true;
$wl = mb_strlen($entry, 'UTF-8');
while ($offset < $wl) {
$p = mb_strpos($entry, '/', $offset, 'UTF-8');
if ($p !== false) {
$poss[] = $p - count($poss);
} else {
break;
}
$offset = $p + 1;
}
if (count($poss)) {
$this->words[str_replace('/', '', mb_strtolower($entry))] = $poss;
}
}
} elseif ($this->mpdf->debug) {
throw new \Mpdf\MpdfException(sprintf('Unable to open hyphenation dictionary "%s"', $this->mpdf->hyphenationDictionaryFile));
}
$this->dictionaryLoaded = true;
}
}
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