class Translations {
/**
* List of translation entries.
*
* @since 2.8.0
*
* @var Translation_Entry[]
*/
public $entries = array();
/**
* List of translation headers.
*
* @since 2.8.0
*
* @var array<string, string>
*/
public $headers = array();
/**
* Adds an entry to the PO structure.
*
* @since 2.8.0
*
* @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;
}
/**
* Adds or merges an entry to the PO structure.
*
* @since 2.8.0
*
* @param array|Translation_Entry $entry
* @return bool True on success, false if the entry doesn't have a key.
*/
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
*
* @since 2.8.0
*
* @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;
}
/**
* Sets translation headers.
*
* @since 2.8.0
*
* @param array $headers Associative array of headers.
*/
public function set_headers( $headers ) {
foreach ( $headers as $header => $value ) {
$this->set_header( $header, $value );
}
}
/**
* Returns a given translation header.
*
* @since 2.8.0
*
* @param string $header
* @return string|false Header if it exists, false otherwise.
*/
public function get_header( $header ) {
return isset( $this->headers[ $header ] ) ? $this->headers[ $header ] : false;
}
/**
* Returns a given translation entry.
*
* @since 2.8.0
*
* @param Translation_Entry $entry Translation entry.
* @return Translation_Entry|false Translation entry if it exists, false otherwise.
*/
public function translate_entry( &$entry ) {
$key = $entry->key();
return isset( $this->entries[ $key ] ) ? $this->entries[ $key ] : false;
}
/**
* Translates a singular string.
*
* @since 2.8.0
*
* @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.
*
* @since 2.8.0
*
* @param int $count Number of items.
* @return int Plural form to use.
*/
public function select_plural_form( $count ) {
return 1 === (int) $count ? 0 : 1;
}
/**
* Returns the plural forms count.
*
* @since 2.8.0
*
* @return int Plural forms count.
*/
public function get_plural_forms_count() {
return 2;
}
/**
* Translates a plural string.
*
* @since 2.8.0
*
* @param string $singular
* @param string $plural
* @param int $count
* @param string $context
* @return string
*/
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;
}
}
/**
* Merges other translations into the current one.
*
* @since 2.8.0
*
* @param Translations $other Another Translation object, whose translations will be merged in this one (passed by reference).
*/
public function merge_with( &$other ) {
foreach ( $other->entries as $entry ) {
$this->entries[ $entry->key() ] = $entry;
}
}
/**
* Merges originals with existing entries.
*
* @since 2.8.0
*
* @param Translations $other
*/
public function merge_originals_with( &$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 );
}
}
}
}
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