#2: zlib inflate on strings, streams can be appended by a filter to i…

…nflate
dmt-software · Jun 19, 2024 · 59af3b1 · 59af3b1
1 parent 8a7e0fc
commit 59af3b1
Show file tree

Hide file tree

Showing 3 changed files with 31 additions and 43 deletions.
diff --git a/src/Source/GzipStreamParser.php b/src/Source/GzipStreamParser.php
diff --git a/src/Source/GzipStringParser.php b/src/Source/GzipStringParser.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace DMT\XmlParser\Source;
+
+class GzipStringParser implements Parser
+{
+    private string $source;
+    private int $length;
+
+    public function __construct(string $source, int $length = 1024)
+    {
+        $this->source = $source;
+        $this->length = $length;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function parse(): iterable
+    {
+        $tmp = inflate_init(ZLIB_ENCODING_GZIP);
+        $chunks = str_split($this->source, $this->length);
+
+        foreach ($chunks as $chunk) {
+            yield from str_split(inflate_add($tmp, $chunk));
+        }
+    }
+}
diff --git a/tests/Source/GzipStreamParserTest.php → tests/Source/GzipStringParserTest.php b/tests/Source/GzipStreamParserTest.php → tests/Source/GzipStringParserTest.php
@@ -2,10 +2,10 @@
 
 namespace DMT\Test\XmlParser\Source;
 
-use DMT\XmlParser\Source\GzipStreamParser;
+use DMT\XmlParser\Source\GzipStringParser;
 use PHPUnit\Framework\TestCase;
 
-class GzipStreamParserTest extends TestCase
+class GzipStringParserTest extends TestCase
 {
     public function testParse(): void
     {
@@ -15,7 +15,7 @@ public function testParse(): void
         fwrite($handle, zlib_encode($books, ZLIB_ENCODING_GZIP));
         rewind($handle);
 
-        $parser = new GzipStreamParser($handle);
+        $parser = new GzipStringParser(stream_get_contents($handle));
         $contents = '';
         foreach ($parser->parse() as $char) {
             $contents .= $char;