Files missing from the previous commit added

src/quickRdfIo/StreamSkipBomTrait.php

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+<?php
+
+/*
+ * The MIT License
+ *
+ * Copyright 2024 zozlak.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+namespace quickRdfIo;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Description of StreamSkipBomTrait
+ *
+ * @author zozlak
+ */
+trait StreamSkipBomTrait {
+
+    private $invalidBoms2B = [
+        "\xEF\xFF" => "UTF-16 BE",
+        "\xFF\xFE" => "UTF-16 LE",
+    ];
+    private $invalidBoms3B = [
+        "\x2B\x2F\x76" => "UTF-7",
+        "\xF7\x64\x4C" => "UTF-1",
+        "\x0E\xFE\xFF" => "SCSU",
+        "\xFB\xEE\x28" => "BOCU-1",
+    ];
+    private $invalidBoms4B = [
+        "\x00\x00\xFE\xFF" => "UTF-32 BE",
+        "\xFF\xFE\x00\x00" => "UTF-32 LE",
+        "\xDD\x73\x66\x73" => "UTF-EBCDIC",
+        "\x84\x31\x95\x33" => "GB18030",
+    ];
+    private $bomUtf8       = "\xEF\xBB\xBF";
+
+    private function skipBom(StreamInterface $stream): void {
+        if ($stream->isSeekable()) {
+            $bom = $stream->read(4);
+            if (isset($this->invalidBoms4B[$bom])) {
+                throw new RdfIoException("Input stream has wrong encoding " . $this->invalidBoms4B[$bom]);
+            }
+            $bom = substr($bom, 0, 3);
+            if ($bom === $this->bomUtf8) {
+                $stream->seek(-1, SEEK_CUR);
+                return;
+            }
+            if (isset($this->invalidBoms3B[$bom])) {
+                throw new RdfIoException("Input stream has wrong encoding " . $this->invalidBoms3B[$bom]);
+            }
+            $bom = substr($bom, 0, 2);
+            if (isset($this->invalidBoms2B[$bom])) {
+                throw new RdfIoException("Input stream has wrong encoding " . $this->invalidBoms2B[$bom]);
+            }
+            // no BOM recognized - rewind
+            $stream->seek(-4, SEEK_CUR);
+        }
+    }
+}

tests/files/issue10_utf16be.nq

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+��<http://foo> <http://bar> <http://baz> .

tests/files/issue10_utf7.nq

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++/v<http://foo> <http://bar> <http://baz> .

tests/files/issue10_utf8.nq

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+<http://foo> <http://bar> <http://baz> .