Add makefile, PSR-4 ModifierCompilers

src/Compile/Modifier/CountSentencesModifierCompiler.php

@@ -0,0 +1,21 @@
+<?php
+namespace Smarty\Compile\Modifier;
+/**
+ * Smarty count_sentences modifier plugin
+ * Type:     modifier
+ * Name:     count_sentences
+ * Purpose:  count the number of sentences in a text
+ *
+ * @link   https://www.smarty.net/manual/en/language.modifier.count.paragraphs.php
+ *          count_sentences (Smarty online manual)
+ * @author Uwe Tews
+ */
+
+class CountSentencesModifierCompiler extends Base {
+
+	public function compile($params, \Smarty\Compiler\Template $compiler) {
+		// find periods, question marks, exclamation marks with a word before but not after.
+		return 'preg_match_all("#\w[\.\?\!](\W|$)#S' . \Smarty\Smarty::$_UTF8_MODIFIER . '", ' . $params[ 0 ] . ', $tmp)';
+	}
+
+}