Merge pull request #9882 from MrPetovan/bug/po2php-plural-conversion

Remove ternary operators from converted .po plural condition

src/Console/PoToPhp.php

@@ -103,14 +103,14 @@ HELP;
 
 			if (substr($l, 0, 15) == '"Plural-Forms: ') {
 				$match = [];
-				preg_match("|nplurals=([0-9]*); *plural=(.*)[;\\\\]|", $l, $match);
-				$cond = str_replace('n', '$n', $match[2]);
+				preg_match("|nplurals=([0-9]*); *plural=(.*?)[;\\\\]|", $l, $match);
+				$return = $this->convertCPluralConditionToPhpReturnStatement($match[2]);
 				// define plural select function if not already defined
 				$fnname = 'string_plural_select_' . $lang;
 				$out .= 'if(! function_exists("' . $fnname . '")) {' . "\n";
 				$out .= 'function ' . $fnname . '($n){' . "\n";
 				$out .= '	$n = intval($n);' . "\n";
-				$out .= '	return ' . $cond . ';' . "\n";
+				$out .= '	' . $return . "\n";
 				$out .= '}}' . "\n";
 			}
 
@@ -212,4 +212,82 @@ HELP;
 	{
 		return str_replace('$', '\$', $match[0]);
 	}
+
+	/**
+	 * Converts C-style plural condition in .po files to a PHP-style plural return statement
+	 *
+	 * Adapted from https://github.com/friendica/friendica/issues/9747#issuecomment-769604485
+	 * Many thanks to Christian Archer (https://github.com/sunchaserinfo)
+	 *
+	 * @param string $cond
+	 * @return string
+	 */
+	private function convertCPluralConditionToPhpReturnStatement(string $cond)
+	{
+		$cond = str_replace('n', '$n', $cond);
+
+		/**
+		 * Parses the condition into an array if there's at least a ternary operator, to a string otherwise
+		 *
+		 * Warning: Black recursive magic
+		 *
+		 * @param string $string
+		 * @param array|string $node
+		 */
+		function parse(string $string, &$node = [])
+		{
+			// Removes extra outward parentheses
+			if (strpos($string, '(') === 0 && strrpos($string, ')') === strlen($string) - 1) {
+				$string = substr($string, 1, -1);
+			}
+
+			$q = strpos($string, '?');
+			$s = strpos($string, ':');
+
+			if ($q === false && $s === false) {
+				$node = $string;
+				return;
+			}
+
+			if ($q === false || $s < $q) {
+				list($then, $else) = explode(':', $string, 2);
+				$node['then'] = $then;
+				$parsedElse = [];
+				parse($else, $parsedElse);
+				$node['else'] = $parsedElse;
+			} else {
+				list($if, $thenelse) = explode('?', $string, 2);
+				$node['if'] = $if;
+				parse($thenelse, $node);
+			}
+		}
+
+		/**
+		 * Renders the parsed condition tree into a return statement
+		 *
+		 * Warning: Black recursive magic
+		 *
+		 * @param $tree
+		 * @return string
+		 */
+		function render($tree)
+		{
+			if (is_array($tree)) {
+				$if = trim($tree['if']);
+				$then = trim($tree['then']);
+				$else = render($tree['else']);
+
+				return "if ({$if}) { return {$then}; } else {$else}";
+			}
+
+			$tree = trim($tree);
+
+			return " { return {$tree}; }";
+		}
+
+		$tree = [];
+		parse($cond, $tree);
+
+		return is_string($tree) ? "return intval({$tree});" : render($tree);
+	}
 }

view/lang/bg/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_bg")) {
 function string_plural_select_bg($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Add New Contact"] = "Добавяне на нов контакт";

view/lang/ca/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_ca")) {
 function string_plural_select_ca($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Add New Contact"] = "Afegir Nou Contacte";

view/lang/cs/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_cs")) {
 function string_plural_select_cs($n){
 	$n = intval($n);
-	return ($n == 1 && $n % 1 == 0) ? 0 : ($n >= 2 && $n <= 4 && $n % 1 == 0) ? 1: ($n % 1 != 0 ) ? 2 : 3;;
+	if (($n == 1 && $n % 1 == 0)) { return 0; } else if (($n >= 2 && $n <= 4 && $n % 1 == 0)) { return 1; } else if (($n % 1 != 0 )) { return 2; } else  { return 3; }
 }}
 ;
 $a->strings["Item not found."] = "Položka nenalezena.";

view/lang/de/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_de")) {
 function string_plural_select_de($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["default"] = "Standard";

view/lang/en-gb/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_en_gb")) {
 function string_plural_select_en_gb($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["default"] = "default";

view/lang/en-us/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_en_us")) {
 function string_plural_select_en_us($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["default"] = "default";

view/lang/eo/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_eo")) {
 function string_plural_select_eo($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Add New Contact"] = "Aldonu Novan Kontakton";

view/lang/es/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_es")) {
 function string_plural_select_es($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["default"] = "predeterminado";

view/lang/et/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_et")) {
 function string_plural_select_et($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/fi-fi/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_fi_fi")) {
 function string_plural_select_fi_fi($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Friendica Notification"] = "Friendica-huomautus";

view/lang/fr/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_fr")) {
 function string_plural_select_fr($n){
 	$n = intval($n);
-	return ($n > 1);;
+	return intval($n > 1);
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/hu/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_hu")) {
 function string_plural_select_hu($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["default"] = "alapértelmezett";

view/lang/is/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_is")) {
 function string_plural_select_is($n){
 	$n = intval($n);
-	return ($n % 10 != 1 || $n % 100 == 11);;
+	return intval($n % 10 != 1 || $n % 100 == 11);
 }}
 ;
 $a->strings["Friendica Notification"] = "Friendica tilkynning";

view/lang/it/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_it")) {
 function string_plural_select_it($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/ja/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_ja")) {
 function string_plural_select_ja($n){
 	$n = intval($n);
-	return 0;;
+	return intval(0);
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/nb-no/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_nb_no")) {
 function string_plural_select_nb_no($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/nl/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_nl")) {
 function string_plural_select_nl($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/pl/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_pl")) {
 function string_plural_select_pl($n){
 	$n = intval($n);
-	return ($n==1 ? 0 : ($n%10>=2 && $n%10<=4) && ($n%100<12 || $n%100>14) ? 1 : $n!=1 && ($n%10>=0 && $n%10<=1) || ($n%10>=5 && $n%10<=9) || ($n%100>=12 && $n%100<=14) ? 2 : 3);;
+	if ($n==1) { return 0; } else if (($n%10>=2 && $n%10<=4) && ($n%100<12 || $n%100>14)) { return 1; } else if ($n!=1 && ($n%10>=0 && $n%10<=1) || ($n%10>=5 && $n%10<=9) || ($n%100>=12 && $n%100<=14)) { return 2; } else  { return 3; }
 }}
 ;
 $a->strings["default"] = "standardowe";

view/lang/pt-br/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_pt_br")) {
 function string_plural_select_pt_br($n){
 	$n = intval($n);
-	return ($n > 1);;
+	return intval($n > 1);
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/ro/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_ro")) {
 function string_plural_select_ro($n){
 	$n = intval($n);
-	return ($n==1?0:((($n%100>19)||(($n%100==0)&&($n!=0)))?2:1));;
+	if ($n==1) { return 0; } else if ((($n%100>19)||(($n%100==0)&&($n!=0)))) { return 2; } else  { return 1; }
 }}
 ;
 $a->strings["%d contact edited."] = [

view/lang/ru/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_ru")) {
 function string_plural_select_ru($n){
 	$n = intval($n);
-	return ($n%10==1 && $n%100!=11 ? 0 : $n%10>=2 && $n%10<=4 && ($n%100<12 || $n%100>14) ? 1 : $n%10==0 || ($n%10>=5 && $n%10<=9) || ($n%100>=11 && $n%100<=14)? 2 : 3);;
+	if ($n%10==1 && $n%100!=11) { return 0; } else if ($n%10>=2 && $n%10<=4 && ($n%100<12 || $n%100>14)) { return 1; } else if ($n%10==0 || ($n%10>=5 && $n%10<=9) || ($n%100>=11 && $n%100<=14)) { return 2; } else  { return 3; }
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/sv/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_sv")) {
 function string_plural_select_sv($n){
 	$n = intval($n);
-	return ($n != 1);;
+	return intval($n != 1);
 }}
 ;
 $a->strings["Daily posting limit of %d post reached. The post was rejected."] = [

view/lang/zh-cn/strings.php

@@ -3,7 +3,7 @@
 if(! function_exists("string_plural_select_zh_cn")) {
 function string_plural_select_zh_cn($n){
 	$n = intval($n);
-	return 0;;
+	return intval(0);
 }}
 ;
 $a->strings["default"] = "默认";