PoHeader::parsePluralForms($pluralforms)
Parses a Plural-Forms entry from a Gettext Portable Object file header.
Parameters
string $pluralforms: The Plural-Forms entry value.
Return value
An indexed array of parsed plural formula data. Containing:
- 'nplurals': The number of plural forms defined by the plural formula.
- 'plurals': Array of plural positions keyed by plural value.
Throws
Exception
File
- core/lib/Drupal/Component/Gettext/PoHeader.php, line 193
Class
- PoHeader
- Gettext PO header handler.
Namespace
Drupal\Component\Gettext
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | function parsePluralForms($pluralforms) { $plurals = array(); // First, delete all whitespace. $pluralforms = strtr($pluralforms, array(" " => "", "\t" => "")); // Select the parts that define nplurals and plural. $nplurals = strstr($pluralforms, "nplurals="); if (strpos($nplurals, ";")) { // We want the string from the 10th char, because "nplurals=" length is 9. $nplurals = substr($nplurals, 9, strpos($nplurals, ";") - 9); } else { return FALSE; } $plural = strstr($pluralforms, "plural="); if (strpos($plural, ";")) { // We want the string from the 8th char, because "plural=" length is 7. $plural = substr($plural, 7, strpos($plural, ";") - 7); } else { return FALSE; } // If the number of plurals is zero, we return a default result. if ($nplurals == 0) { return array($nplurals, array('default' => 0)); } // Calculate possible plural positions of different plural values. All known // plural formula's are repetitive above 100. // For data compression we store the last position the array value // changes and store it as default. $element_stack = $this->parseArithmetic($plural); if ($element_stack !== FALSE) { for ($i = 0; $i <= 199; $i++) { $plurals[$i] = $this->evaluatePlural($element_stack, $i); } $default = $plurals[$i - 1]; $plurals = array_filter($plurals, function($value) use ($default) { return ($value != $default); }); $plurals['default'] = $default; return array($nplurals, $plurals); } else { throw new \Exception('The plural formula could not be parsed.'); }} |
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