Add support for decompressing Lempel-Ziv-Huffman, LH5 variant.

tests/lh5.cpp

@@ -0,0 +1,84 @@
+/*
+ * This file is part of the Aaru Data Preservation Suite.
+ * Copyright (c) 2019-2025 Natalia Portillo.
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of the
+ * License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "../zoo/lh5.h"
+
+#include <climits>
+#include <cstddef>
+#include <cstdint>
+
+#include "../library.h"
+#include "crc32.h"
+#include "gtest/gtest.h"
+
+#define EXPECTED_CRC32 0x66007dba
+
+static const uint8_t *buffer;
+
+class lh5Fixture : public ::testing::Test
+{
+public:
+    lh5Fixture()
+    {
+        // initialization;
+        // can also be done in SetUp()
+    }
+
+protected:
+    void SetUp()
+    {
+        char path[PATH_MAX];
+        char filename[PATH_MAX];
+
+        getcwd(path, PATH_MAX);
+        snprintf(filename, PATH_MAX, "%s/data/alice29.lh5", path);
+
+        FILE *file = fopen(filename, "rb");
+        buffer     = (const uint8_t *)malloc(59104);
+        fread((void *)buffer, 1, 59104, file);
+        fclose(file);
+    }
+
+    void TearDown() { free((void *)buffer); }
+
+    ~lh5Fixture()
+    {
+        // resources cleanup, no exceptions allowed
+    }
+
+    // shared user data
+};
+
+TEST_F(lh5Fixture, lh5)
+{
+    uint8_t params[] = {0x5D, 0x00, 0x00, 0x00, 0x02};
+    size_t  destLen  = 152089;
+    size_t  srcLen   = 59104;
+    auto   *outBuf   = (uint8_t *)malloc(152089);
+
+    auto err = lh5_decompress(buffer, srcLen, outBuf, &destLen);
+
+    EXPECT_EQ(err, 0);
+    EXPECT_EQ(destLen, 152089);
+
+    auto crc = crc32_data(outBuf, 152089);
+
+    free(outBuf);
+
+    EXPECT_EQ(crc, EXPECTED_CRC32);
+}