X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FConsole%2FPoToPhp.php;h=35d87165c12c934787414af2a5be672f1921616d;hb=c9ec2e21b3db208282b553fccdd425479f58bf0e;hp=85dc28cf4d39f4fc8fab7245a710d3045aec5957;hpb=2c56d2f3360c08e312e5c167261af8e5d4b87af4;p=friendica.git

diff --git a/src/Console/PoToPhp.php b/src/Console/PoToPhp.php
index 85dc28cf4d..35d87165c1 100644
--- a/src/Console/PoToPhp.php
+++ b/src/Console/PoToPhp.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * @copyright Copyright (C) 2020, Friendica
+ * @copyright Copyright (C) 2010-2021, the Friendica project
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -103,31 +103,27 @@ 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";
 			}
 
 			if ($k != '' && substr($l, 0, 7) == 'msgstr ') {
-				if ($ink) {
-					$ink = false;
-					$out .= '$a->strings["' . $k . '"] = ';
-				}
-
-				if ($inv) {
-					$out .= '"' . $v . '"';
-				}
-
 				$v = substr($l, 8, $len - 10);
 				$v = preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $v);
 
-				$inv = true;
+				if ($v != '') {
+					$out .= '$a->strings["' . $k . '"] = "' . $v . '"';
+				} else {
+					$k = '';
+					$ink = false;
+				}
 			}
 
 			if ($k != "" && substr($l, 0, 7) == 'msgstr[') {
@@ -147,11 +143,13 @@ HELP;
 
 				$match = [];
 				preg_match("|\[([0-9]*)\] (.*)|", $l, $match);
-				$out .= "\t"
-					. preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $match[1])
-					. ' => '
-					. preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $match[2])
-					. ",\n";
+				if ($match[2] !== '""') {
+					$out .= "\t"
+						. preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $match[1])
+						. ' => '
+						. preg_replace_callback($escape_s_exp, [$this, 'escapeDollar'], $match[2])
+						. ",\n";
+				}
 			}
 
 			if (substr($l, 0, 6) == 'msgid_') {
@@ -212,4 +210,82 @@ HELP;
 	{
 		return str_replace('$', '\$', $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);
+	}
 }