string split function

application/Espo/Core/Formula/Functions/StringGroup/SplitType.php

@@ -0,0 +1,65 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM - Open Source CRM application.
+ * Copyright (C) 2014-2021 Yurii Kuznietsov, Taras Machyshyn, Oleksii Avramenko
+ * Website: https://www.espocrm.com
+ *
+ * EspoCRM is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EspoCRM is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EspoCRM. If not, see http://www.gnu.org/licenses/.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Formula\Functions\StringGroup;
+
+use Espo\Core\Formula\Functions\BaseFunction;
+use Espo\Core\Formula\ArgumentList;
+
+class SplitType extends BaseFunction
+{
+    /**
+     * @return string[]
+     */
+    public function process(ArgumentList $args)
+    {
+        $evaluatedArgs = $this->evaluate($args);
+
+        if (count($evaluatedArgs) < 2) {
+            $this->throwTooFewArguments(2);
+        }
+
+        $string = $evaluatedArgs[0] ?? '';
+        $separator = $evaluatedArgs[1];
+
+        if (!is_string($string)) {
+            $this->throwBadArgumentType(1, 'string');
+        }
+
+        if (!is_string($separator)) {
+            $this->throwBadArgumentType(2, 'string');
+        }
+
+        if ($separator === '') {
+            return mb_str_split($string);
+        }
+
+        return explode($separator, $string);
+    }
+}

application/Espo/Resources/metadata/app/formula.json

@@ -82,6 +82,11 @@
             "insertText": "string\\replace(STRING, SEARCH, REPLACE)",
             "returnType": "string"
         },
+        {
+            "name": "string\\split",
+            "insertText": "string\\split(STRING, SEPARATOR)",
+            "returnType": "string[]"
+        },
         {
             "name": "datetime\\today",
             "insertText": "datetime\\today()",

tests/unit/Espo/Core/Formula/EvaluatorTest.php

@@ -634,4 +634,34 @@ class EvaluatorTest extends \PHPUnit\Framework\TestCase
 
         $this->evaluator->process($expression, null);
     }
+
+    public function testStringSplit1(): void
+    {
+        $expression = "string\\split('1 2 3', ' ')";
+
+        $this->assertEquals(
+            ['1', '2', '3'],
+            $this->evaluator->process($expression, null)
+        );
+    }
+
+    public function testStringSplit2(): void
+    {
+        $expression = "string\\split(null, '')";
+
+        $this->assertEquals(
+            [],
+            $this->evaluator->process($expression, null)
+        );
+    }
+
+    public function testStringSplit3(): void
+    {
+        $expression = "string\\split('12', '')";
+
+        $this->assertEquals(
+            ['1', '2'],
+            $this->evaluator->process($expression, null)
+        );
+    }
 }