/**
* Define a short syllable in a word as either (a) a vowel followed by a non-vowel other than w, x or Y and preceded by a non-vowel,
* or * (b) a vowel at the beginning of the word followed by a non-vowel.
*
* So rap, trap, entrap end with a short syllable, and ow, on, at are classed as short syllables.
* But uproot, bestow, disturb do not end with a short syllable.
*/
private function searchShortSyllabe($from, $nbLetters)
{
$length = Utf8::strlen($this->word);
if ($from < 0) {
$from = $length + $from;
}
if ($from < 0) {
$from = 0;
}
// (a) is just for beginning of the word
if ($nbLetters == 2 && $from != 0) {
return false;
}
$first = Utf8::substr($this->word, $from, 1);
$second = Utf8::substr($this->word, $from + 1, 1);
if ($nbLetters == 2) {
if (in_array($first, self::$vowels) && !in_array($second, self::$vowels)) {
return true;
}
}
$third = Utf8::substr($this->word, $from + 2, 1);
if (!in_array($first, self::$vowels) && in_array($second, self::$vowels) && !in_array($third, array_merge(self::$vowels, array('x', 'Y', 'w')))) {
return true;
}
return false;
}
/**
* Used by spanish, italian, portuguese, etc (but not by french)
*
* If the second letter is a consonant, RV is the region after the next following vowel,
* or if the first two letters are vowels, RV is the region after the next consonant,
* and otherwise (consonant-vowel case) RV is the region after the third letter.
* But RV is the end of the word if these positions cannot be found.
*/
protected function rv()
{
$length = Utf8::strlen($this->word);
$this->rv = '';
$this->rvIndex = $length;
if ($length < 3) {
return true;
}
$first = Utf8::substr($this->word, 0, 1);
$second = Utf8::substr($this->word, 1, 1);
// If the second letter is a consonant, RV is the region after the next following vowel,
if (!in_array($second, static::$vowels)) {
for ($i = 2; $i < $length; $i++) {
$letter = Utf8::substr($this->word, $i, 1);
if (in_array($letter, static::$vowels)) {
$this->rvIndex = $i + 1;
$this->rv = Utf8::substr($this->word, $i + 1);
return true;
}
}
}
// or if the first two letters are vowels, RV is the region after the next consonant,
if (in_array($first, static::$vowels) && in_array($second, static::$vowels)) {
for ($i = 2; $i < $length; $i++) {
$letter = Utf8::substr($this->word, $i, 1);
if (!in_array($letter, static::$vowels)) {
$this->rvIndex = $i + 1;
$this->rv = Utf8::substr($this->word, $i + 1);
return true;
}
}
}
// and otherwise (consonant-vowel case) RV is the region after the third letter.
if (!in_array($first, static::$vowels) && in_array($second, static::$vowels)) {
$this->rv = Utf8::substr($this->word, 3);
$this->rvIndex = 3;
return true;
}
}
/**
* If the word begins with two vowels, RV is the region after the third letter,
* otherwise the region after the first vowel not at the beginning of the word,
* or the end of the word if these positions cannot be found.
* (Exceptionally, par, col or tap, at the begining of a word is also taken to define RV as the region to their right.)
*/
protected function rv()
{
$length = Utf8::strlen($this->word);
$this->rv = '';
$this->rvIndex = $length;
if ($length < 3) {
return true;
}
// If the word begins with two vowels, RV is the region after the third letter
$first = Utf8::substr($this->word, 0, 1);
$second = Utf8::substr($this->word, 1, 1);
if (in_array($first, self::$vowels) && in_array($second, self::$vowels)) {
$this->rv = Utf8::substr($this->word, 3);
$this->rvIndex = 3;
return true;
}
// (Exceptionally, par, col or tap, at the begining of a word is also taken to define RV as the region to their right.)
$begin3 = Utf8::substr($this->word, 0, 3);
if (in_array($begin3, array('par', 'col', 'tap'))) {
$this->rv = Utf8::substr($this->word, 3);
$this->rvIndex = 3;
return true;
}
// otherwise the region after the first vowel not at the beginning of the word,
for ($i = 1; $i < $length; $i++) {
$letter = Utf8::substr($this->word, $i, 1);
if (in_array($letter, self::$vowels)) {
$this->rv = Utf8::substr($this->word, $i + 1);
$this->rvIndex = $i + 1;
return true;
}
}
return false;
}
