function break_into_words($content)
{
$content = trim($content);
if ($content == '') {
return array();
}
// Extract Unicode characters from the raw content data
$ptr = 0;
$utf8_chars = array();
$ucs2_chars = array();
$size = strlen($content);
while ($ptr < $size) {
$utf8_char = ManagerEncoding::get_next_utf8_char($content, $ptr);
$utf8_chars[] = $utf8_char;
$ucs2_chars[] = utf8_to_code($utf8_char);
}
// Get unicode line breaking classes
$classes = array_map(array($this, 'get_line_break_class'), $ucs2_chars);
$this->find_line_break($classes, $breaks, count($classes));
// Make words array
$words = array();
$word = '';
for ($i = 0, $size = count($breaks); $i < $size; $i++) {
$word .= $utf8_chars[$i];
$break = $breaks[$i];
if ($break == LB_INDIRECT || $break == LB_INDIRECT_CM || $break == LB_DIRECT || $break == LB_EXPLICIT) {
$words[] = trim($word);
$word = '';
}
}
return $words;
}
function process_word($raw_content, &$pipeline)
{
if ($raw_content === '') {
return false;
}
$ptr = 0;
$word = '';
$hyphens = array();
$encoding = 'iso-8859-1';
$manager_encoding =& ManagerEncoding::get();
$text_box =& TextBox::create_empty($pipeline);
$len = strlen($raw_content);
while ($ptr < $len) {
$char = $manager_encoding->getNextUTF8Char($raw_content, $ptr);
// Check if current char is a soft hyphen character. It it is,
// remove it from the word (as it should not be drawn normally)
// and store its location
if ($char == SYMBOL_SHY) {
$hyphens[] = strlen($word);
} else {
$mapping = $manager_encoding->getMapping($char);
/**
* If this character is not found in predefined encoding vectors,
* we'll use "Custom" encoding and add single-character TextBox
*
* @TODO: handle characters without known glyph names
*/
if (is_null($mapping)) {
/**
* No mapping to default encoding vectors found for this character
*/
/**
* Add last word
*/
if ($word !== '') {
$text_box->add_subword($word, $encoding, $hyphens);
}
/**
* Add current symbol
*/
$custom_char = $manager_encoding->addCustomChar(utf8_to_code($char));
$text_box->add_subword($custom_char, $manager_encoding->getCustomEncodingName(), $hyphens);
$word = '';
} else {
if (isset($mapping[$encoding])) {
$word .= $mapping[$encoding];
} else {
// This condition prevents empty text boxes from appearing; say, if word starts with a national
// character, an () - text box with no letters will be generated, in rare case causing a random line
// wraps, if container is narrow
if ($word !== '') {
$text_box->add_subword($word, $encoding, $hyphens);
}
reset($mapping);
list($encoding, $add) = each($mapping);
$word = $mapping[$encoding];
$hyphens = array();
}
}
}
}
if ($word !== '') {
$text_box->add_subword($word, $encoding, $hyphens);
}
$this->add_child($text_box);
return true;
}