Add M3U format

formats/M3uFormat.php

@@ -0,0 +1,94 @@
+<?php
+
+/**
+ * M3U
+ *
+ */
+class M3uFormat extends FormatAbstract
+{
+    const MIME_TYPE = 'application/mpegurl';
+    private $item_duration = null;
+    private $item_title = null;
+    private $item_url = null;
+    private $item_bytes = null;
+
+    private function resetItem()
+    {
+        $this->item_duration = null;
+        $this->item_title = null;
+        $this->item_url = null;
+        $this->item_bytes = null;
+    }
+    private function itemIsEmpty(): bool
+    {
+        return $this->item_url === null;
+    }
+    private function itemRender(): string
+    {
+        if ($this->itemIsEmpty()) {
+            return '';
+        }
+        $text = "\n";
+        $commentParts = [];
+        if ($this->item_duration !== null && $this->item_duration > 0) {
+            $commentParts[] = $this->item_duration;
+        }
+        if ($this->item_title !== null) {
+            $commentParts[] = $this->item_title;
+        }
+
+        if (count($commentParts) !== 0) {
+            $text .= '#EXTINF:' . implode(',', $commentParts) . "\n";
+        }
+
+        $text .= $this->item_url . "\n";
+        return $text;
+    }
+
+    public function stringify()
+    {
+        $contents = "#EXTM3U\n";
+
+        foreach ($this->getItems() as $item) {
+            $this->resetItem();
+            $itemArray = $item->toArray();
+
+            if (isset($itemArray['enclosure'])) {
+                $this->item_url = $itemArray['enclosure']['url'];
+                $this->item_bytes = $itemArray['enclosure']['length'];
+                if (isset($itemArray['itunes']) && isset($itemArray['itunes']['duration'])) {
+                    $this->item_duration = self::parseDuration($itemArray['itunes']['duration']);
+                }
+            }
+            if (isset($itemArray['title'])) {
+                $item->item_title = $itemArray['title'];
+            }
+            if (! $this->itemIsEmpty()) {
+                $contents .= $this->itemRender();
+            } else {
+                foreach ($item->enclosures as $url) {
+                    $this->resetItem();
+                    $this->item_url = $url;
+                    if (isset($itemArray['title'])) {
+                        $this->item_title = $itemArray['title'];
+                    }
+                    $contents .= $this->itemRender();
+                }
+            }
+        }
+        return mb_convert_encoding($contents, $this->getCharset(), 'UTF-8');
+    }
+    /*
+     * parseDuration converts a string like "00:4:20" to 260
+     * allowing to convert duration as used in the itunes:duration tag to the number of seconds
+     */
+    private static function parseDuration(string $duration_string): int
+    {
+        $seconds = 0;
+        $parts = explode(':', $duration_string);
+        for ($i = 0; $i < count($parts); $i++) {
+            $seconds += intval($parts[count($parts) - $i - 1]) * pow(60, $i);
+        }
+        return $seconds;
+    }
+}

tests/Formats/M3uFormatTest.php

@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * M3uFormat
+ */
+
+namespace RssBridge\Tests\Formats;
+
+require_once __DIR__ . '/BaseFormatTest.php';
+
+use PHPUnit\Framework\TestCase;
+
+class M3uFormatTest extends BaseFormatTest
+{
+    private const PATH_EXPECTED = self::PATH_SAMPLES . 'expectedM3uFormat/';
+
+    /**
+     * @dataProvider sampleProvider
+     * @runInSeparateProcess
+     */
+    public function testOutput(string $name, string $path)
+    {
+        $data = $this->formatData('M3u', $this->loadSample($path));
+
+        $expected = file_get_contents(self::PATH_EXPECTED . $name . '.m3u');
+        $this->assertEquals($expected, $data);
+    }
+}
+

tests/Formats/samples/expectedM3uFormat/feed.common.m3u

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+#EXTM3U
+
+#EXTINF:Atom draft-07 snapshot
+http://example.org/audio/ph34r_my_podcast.mp3

tests/Formats/samples/expectedM3uFormat/feed.empty.m3u

@@ -0,0 +1 @@
+#EXTM3U

tests/Formats/samples/expectedM3uFormat/feed.emptyItems.m3u

@@ -0,0 +1 @@
+#EXTM3U

tests/Formats/samples/expectedM3uFormat/feed.microblog.m3u

@@ -0,0 +1 @@
+#EXTM3U