Version 1

[yaffs-website] / vendor / dflydev / placeholder-resolver / src / Dflydev / PlaceholderResolver / RegexPlaceholderResolverCallback.php

diff --git a/vendor/dflydev/placeholder-resolver/src/Dflydev/PlaceholderResolver/RegexPlaceholderResolverCallback.php b/vendor/dflydev/placeholder-resolver/src/Dflydev/PlaceholderResolver/RegexPlaceholderResolverCallback.php
new file mode 100644 (file)
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+++ b/vendor/dflydev/placeholder-resolver/src/Dflydev/PlaceholderResolver/RegexPlaceholderResolverCallback.php
@@ -0,0 +1,71 @@
+<?php
+
+/*
+ * This file is a part of dflydev/placeholder-resolver.
+ *
+ * (c) Dragonfly Development Inc.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Dflydev\PlaceholderResolver;
+
+use Dflydev\PlaceholderResolver\DataSource\DataSourceInterface;
+
+class RegexPlaceholderResolverCallback
+{
+    /**
+     * @var DataSourceInterface
+     */
+    private $dataSource;
+
+    /**
+     * Constructor
+     *
+     * @param DataSourceInterface $dataSource
+     */
+    public function __construct(DataSourceInterface $dataSource)
+    {
+        $this->dataSource = $dataSource;
+    }
+
+    /**
+     * Callback for preg_replace_callback() generally called in PlaceholderResolver
+     *
+     * The expected input will be array($fullMatch, $potentialKey) and the
+     * expected output will be either a value from the data source, a special
+     * value from SERVER or CONSTANT, or the contents of $fullMatch (the key
+     * itself with its wrapped prefix and suffix).
+     *
+     * @param array $matches
+     *
+     * @return string|null
+     */
+    public function callback($matches)
+    {
+        list ($fullMatch, $potentialKey) = $matches;
+        if (preg_match('/^(SYSTEM|SERVER|CONSTANT):(\w+)$/', $potentialKey, $specialMatches)) {
+            list ($dummy, $which, $specialKey) = $specialMatches;
+            switch ($which) {
+                case 'SERVER':
+                case 'SYSTEM':
+                    if ($this->dataSource->exists($specialKey, true)) {
+                        return $this->dataSource->get($specialKey, true);
+                    }
+                    break;
+                case 'CONSTANT':
+                    if (defined($specialKey)) {
+                        return constant($specialKey);
+                    }
+                    break;
+            }
+        }
+
+        if ($this->dataSource->exists($potentialKey)) {
+            return $this->dataSource->get($potentialKey);
+        }
+
+        return $fullMatch;
+    }
+}