Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 395 insertions, 0 deletions

diff --git a/wp-includes/pomo/translations.php b/wp-includes/pomo/translations.php
new file mode 100644
index 0000000..a5534a8
--- /dev/null
+++ b/wp-includes/pomo/translations.php
@@ -0,0 +1,395 @@
+<?php
+/**
+ * Class for a set of entries for translation and their associated headers
+ *
+ * @version $Id: translations.php 1157 2015-11-20 04:30:11Z dd32 $
+ * @package pomo
+ * @subpackage translations
+ */
+
+require_once __DIR__ . '/plural-forms.php';
+require_once __DIR__ . '/entry.php';
+
+if ( ! class_exists( 'Translations', false ) ) :
+	#[AllowDynamicProperties]
+	class Translations {
+		public $entries = array();
+		public $headers = array();
+
+		/**
+		 * Add entry to the PO structure
+		 *
+		 * @param array|Translation_Entry $entry
+		 * @return bool true on success, false if the entry doesn't have a key
+		 */
+		public function add_entry( $entry ) {
+			if ( is_array( $entry ) ) {
+				$entry = new Translation_Entry( $entry );
+			}
+			$key = $entry->key();
+			if ( false === $key ) {
+				return false;
+			}
+			$this->entries[ $key ] = &$entry;
+			return true;
+		}
+
+		/**
+		 * @param array|Translation_Entry $entry
+		 * @return bool
+		 */
+		public function add_entry_or_merge( $entry ) {
+			if ( is_array( $entry ) ) {
+				$entry = new Translation_Entry( $entry );
+			}
+			$key = $entry->key();
+			if ( false === $key ) {
+				return false;
+			}
+			if ( isset( $this->entries[ $key ] ) ) {
+				$this->entries[ $key ]->merge_with( $entry );
+			} else {
+				$this->entries[ $key ] = &$entry;
+			}
+			return true;
+		}
+
+		/**
+		 * Sets $header PO header to $value
+		 *
+		 * If the header already exists, it will be overwritten
+		 *
+		 * TODO: this should be out of this class, it is gettext specific
+		 *
+		 * @param string $header header name, without trailing :
+		 * @param string $value header value, without trailing \n
+		 */
+		public function set_header( $header, $value ) {
+			$this->headers[ $header ] = $value;
+		}
+
+		/**
+		 * @param array $headers
+		 */
+		public function set_headers( $headers ) {
+			foreach ( $headers as $header => $value ) {
+				$this->set_header( $header, $value );
+			}
+		}
+
+		/**
+		 * @param string $header
+		 */
+		public function get_header( $header ) {
+			return isset( $this->headers[ $header ] ) ? $this->headers[ $header ] : false;
+		}
+
+		/**
+		 * @param Translation_Entry $entry
+		 */
+		public function translate_entry( &$entry ) {
+			$key = $entry->key();
+			return isset( $this->entries[ $key ] ) ? $this->entries[ $key ] : false;
+		}
+
+		/**
+		 * @param string $singular
+		 * @param string $context
+		 * @return string
+		 */
+		public function translate( $singular, $context = null ) {
+			$entry      = new Translation_Entry(
+				array(
+					'singular' => $singular,
+					'context'  => $context,
+				)
+			);
+			$translated = $this->translate_entry( $entry );
+			return ( $translated && ! empty( $translated->translations ) ) ? $translated->translations[0] : $singular;
+		}
+
+		/**
+		 * Given the number of items, returns the 0-based index of the plural form to use
+		 *
+		 * Here, in the base Translations class, the common logic for English is implemented:
+		 *  0 if there is one element, 1 otherwise
+		 *
+		 * This function should be overridden by the subclasses. For example MO/PO can derive the logic
+		 * from their headers.
+		 *
+		 * @param int $count number of items
+		 */
+		public function select_plural_form( $count ) {
+			return 1 === (int) $count ? 0 : 1;
+		}
+
+		/**
+		 * @return int
+		 */
+		public function get_plural_forms_count() {
+			return 2;
+		}
+
+		/**
+		 * @param string $singular
+		 * @param string $plural
+		 * @param int    $count
+		 * @param string $context
+		 */
+		public function translate_plural( $singular, $plural, $count, $context = null ) {
+			$entry              = new Translation_Entry(
+				array(
+					'singular' => $singular,
+					'plural'   => $plural,
+					'context'  => $context,
+				)
+			);
+			$translated         = $this->translate_entry( $entry );
+			$index              = $this->select_plural_form( $count );
+			$total_plural_forms = $this->get_plural_forms_count();
+			if ( $translated && 0 <= $index && $index < $total_plural_forms &&
+				is_array( $translated->translations ) &&
+				isset( $translated->translations[ $index ] ) ) {
+				return $translated->translations[ $index ];
+			} else {
+				return 1 === (int) $count ? $singular : $plural;
+			}
+		}
+
+		/**
+		 * Merge $other in the current object.
+		 *
+		 * @param Object $other Another Translation object, whose translations will be merged in this one (passed by reference).
+		 */
+		public function merge_with( &$other ) {
+			foreach ( $other->entries as $entry ) {
+				$this->entries[ $entry->key() ] = $entry;
+			}
+		}
+
+		/**
+		 * @param object $other
+		 */
+		public function merge_originals_with( &$other ) {
+			foreach ( $other->entries as $entry ) {
+				if ( ! isset( $this->entries[ $entry->key() ] ) ) {
+					$this->entries[ $entry->key() ] = $entry;
+				} else {
+					$this->entries[ $entry->key() ]->merge_with( $entry );
+				}
+			}
+		}
+	}
+
+	class Gettext_Translations extends Translations {
+
+		/**
+		 * Number of plural forms.
+		 *
+		 * @var int
+		 */
+		public $_nplurals;
+
+		/**
+		 * Callback to retrieve the plural form.
+		 *
+		 * @var callable
+		 */
+		public $_gettext_select_plural_form;
+
+		/**
+		 * The gettext implementation of select_plural_form.
+		 *
+		 * It lives in this class, because there are more than one descendand, which will use it and
+		 * they can't share it effectively.
+		 *
+		 * @param int $count
+		 */
+		public function gettext_select_plural_form( $count ) {
+			if ( ! isset( $this->_gettext_select_plural_form ) || is_null( $this->_gettext_select_plural_form ) ) {
+				list( $nplurals, $expression )     = $this->nplurals_and_expression_from_header( $this->get_header( 'Plural-Forms' ) );
+				$this->_nplurals                   = $nplurals;
+				$this->_gettext_select_plural_form = $this->make_plural_form_function( $nplurals, $expression );
+			}
+			return call_user_func( $this->_gettext_select_plural_form, $count );
+		}
+
+		/**
+		 * @param string $header
+		 * @return array
+		 */
+		public function nplurals_and_expression_from_header( $header ) {
+			if ( preg_match( '/^\s*nplurals\s*=\s*(\d+)\s*;\s+plural\s*=\s*(.+)$/', $header, $matches ) ) {
+				$nplurals   = (int) $matches[1];
+				$expression = trim( $matches[2] );
+				return array( $nplurals, $expression );
+			} else {
+				return array( 2, 'n != 1' );
+			}
+		}
+
+		/**
+		 * Makes a function, which will return the right translation index, according to the
+		 * plural forms header
+		 *
+		 * @param int    $nplurals
+		 * @param string $expression
+		 */
+		public function make_plural_form_function( $nplurals, $expression ) {
+			try {
+				$handler = new Plural_Forms( rtrim( $expression, ';' ) );
+				return array( $handler, 'get' );
+			} catch ( Exception $e ) {
+				// Fall back to default plural-form function.
+				return $this->make_plural_form_function( 2, 'n != 1' );
+			}
+		}
+
+		/**
+		 * Adds parentheses to the inner parts of ternary operators in
+		 * plural expressions, because PHP evaluates ternary oerators from left to right
+		 *
+		 * @param string $expression the expression without parentheses
+		 * @return string the expression with parentheses added
+		 */
+		public function parenthesize_plural_exression( $expression ) {
+			$expression .= ';';
+			$res         = '';
+			$depth       = 0;
+			for ( $i = 0; $i < strlen( $expression ); ++$i ) {
+				$char = $expression[ $i ];
+				switch ( $char ) {
+					case '?':
+						$res .= ' ? (';
+						++$depth;
+						break;
+					case ':':
+						$res .= ') : (';
+						break;
+					case ';':
+						$res  .= str_repeat( ')', $depth ) . ';';
+						$depth = 0;
+						break;
+					default:
+						$res .= $char;
+				}
+			}
+			return rtrim( $res, ';' );
+		}
+
+		/**
+		 * @param string $translation
+		 * @return array
+		 */
+		public function make_headers( $translation ) {
+			$headers = array();
+			// Sometimes \n's are used instead of real new lines.
+			$translation = str_replace( '\n', "\n", $translation );
+			$lines       = explode( "\n", $translation );
+			foreach ( $lines as $line ) {
+				$parts = explode( ':', $line, 2 );
+				if ( ! isset( $parts[1] ) ) {
+					continue;
+				}
+				$headers[ trim( $parts[0] ) ] = trim( $parts[1] );
+			}
+			return $headers;
+		}
+
+		/**
+		 * @param string $header
+		 * @param string $value
+		 */
+		public function set_header( $header, $value ) {
+			parent::set_header( $header, $value );
+			if ( 'Plural-Forms' === $header ) {
+				list( $nplurals, $expression )     = $this->nplurals_and_expression_from_header( $this->get_header( 'Plural-Forms' ) );
+				$this->_nplurals                   = $nplurals;
+				$this->_gettext_select_plural_form = $this->make_plural_form_function( $nplurals, $expression );
+			}
+		}
+	}
+endif;
+
+if ( ! class_exists( 'NOOP_Translations', false ) ) :
+	/**
+	 * Provides the same interface as Translations, but doesn't do anything
+	 */
+	#[AllowDynamicProperties]
+	class NOOP_Translations {
+		public $entries = array();
+		public $headers = array();
+
+		public function add_entry( $entry ) {
+			return true;
+		}
+
+		/**
+		 * @param string $header
+		 * @param string $value
+		 */
+		public function set_header( $header, $value ) {
+		}
+
+		/**
+		 * @param array $headers
+		 */
+		public function set_headers( $headers ) {
+		}
+
+		/**
+		 * @param string $header
+		 * @return false
+		 */
+		public function get_header( $header ) {
+			return false;
+		}
+
+		/**
+		 * @param Translation_Entry $entry
+		 * @return false
+		 */
+		public function translate_entry( &$entry ) {
+			return false;
+		}
+
+		/**
+		 * @param string $singular
+		 * @param string $context
+		 */
+		public function translate( $singular, $context = null ) {
+			return $singular;
+		}
+
+		/**
+		 * @param int $count
+		 * @return bool
+		 */
+		public function select_plural_form( $count ) {
+			return 1 === (int) $count ? 0 : 1;
+		}
+
+		/**
+		 * @return int
+		 */
+		public function get_plural_forms_count() {
+			return 2;
+		}
+
+		/**
+		 * @param string $singular
+		 * @param string $plural
+		 * @param int    $count
+		 * @param string $context
+		 */
+		public function translate_plural( $singular, $plural, $count, $context = null ) {
+			return 1 === (int) $count ? $singular : $plural;
+		}
+
+		/**
+		 * @param object $other
+		 */
+		public function merge_with( &$other ) {
+		}
+	}
+endif;