Add libbz2.

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "tests/lib"]
 	path = tests/lib
 	url = https://github.com/google/googletest
+[submodule "3rdparty/bzip2"]
+	path = 3rdparty/bzip2
+	url = https://gitlab.com/bzip2/bzip2.git

3rdparty/CMakeLists.txt

@@ -0,0 +1,7 @@
+message("Hello")
+
+
+SET(ENABLE_LIB_ONLY ON)
+SET(ENABLE_STATIC_LIB ON)
+
+add_subdirectory(bzip2)

CMakeLists.txt

@@ -71,6 +71,29 @@ if("${CMAKE_BUILD_TYPE}" MATCHES "Release")
     endif()
 endif()
 
+add_subdirectory(3rdparty)
+
 add_library("Aaru.Compression.Native" SHARED library.c apple_rle.c apple_rle.h adc.c adc.h)
 
+MACRO (TARGET_LINK_LIBRARIES_WHOLE_ARCHIVE target)
+    if("${CMAKE_C_COMPILER_ID}" MATCHES "MSVC")
+        FOREACH (arg IN LISTS ARGN)
+            SET_TARGET_PROPERTIES(
+                    ${target} PROPERTIES LINK_FLAGS "/WHOLEARCHIVE:${lib}"
+            )
+        ENDFOREACH ()
+    ELSE ()
+        if("${CMAKE_C_COMPILER_ID}" MATCHES "AppleClang")
+            SET(LINK_FLAGS "-Wl,-all_load")
+            SET(UNDO_FLAGS "-Wl,-noall_load")
+        ELSE ()
+            SET(LINK_FLAGS "-Wl,--whole-archive")
+            SET(UNDO_FLAGS "-Wl,--no-whole-archive")
+        ENDIF ()
+        TARGET_LINK_LIBRARIES(${target} ${LINK_FLAGS} ${ARGN} ${UNDO_FLAGS})
+    ENDIF ()
+ENDMACRO ()
+
+TARGET_LINK_LIBRARIES_WHOLE_ARCHIVE("Aaru.Compression.Native" bz2_static)
+
 add_subdirectory(tests)

tests/CMakeLists.txt

@@ -15,7 +15,10 @@ file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/data/apple_rle.bin
 file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/data/adc.bin
      DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/data/)
 
+file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/data/bzip2.bz2
+     DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/data/)
+
 # 'Google_Tests_run' is the target name
 # 'test1.cpp tests2.cpp' are source files with tests
-add_executable(tests_run apple_rle.cpp crc32.c crc32.h adc.cpp)
+add_executable(tests_run apple_rle.cpp crc32.c crc32.h adc.cpp bzip2.cpp)
 target_link_libraries(tests_run gtest gtest_main "Aaru.Compression.Native")

tests/bzip2.cpp

@@ -0,0 +1,80 @@
+/*
+ * This file is part of the Aaru Data Preservation Suite.
+ * Copyright (c) 2019-2021 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 <climits>
+#include <cstdint>
+
+#include "../3rdparty/bzip2/bzlib.h"
+#include "crc32.h"
+#include "gtest/gtest.h"
+
+#define EXPECTED_CRC32 0xc64059c0
+
+static const uint8_t* buffer;
+
+class bzip2Fixture : public ::testing::Test
+{
+  public:
+    bzip2Fixture()
+    {
+        // 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/bzip2.bz2", path);
+
+        FILE* file = fopen(filename, "rb");
+        buffer     = (const uint8_t*)malloc(1053934);
+        fread((void*)buffer, 1, 1053934, file);
+        fclose(file);
+    }
+
+    void TearDown() { free((void*)buffer); }
+
+    ~bzip2Fixture()
+    {
+        // resources cleanup, no exceptions allowed
+    }
+
+    // shared user data
+};
+
+TEST_F(bzip2Fixture, bzip2)
+{
+    uint  real_size = 1048576;
+    auto* outBuf    = (uint8_t*)malloc(1048576);
+
+    auto bz_err = BZ2_bzBuffToBuffDecompress((char*)outBuf, &real_size, (char*)buffer, 1053934, 0, 0);
+
+    EXPECT_EQ(bz_err, BZ_OK);
+
+    EXPECT_EQ(real_size, 1048576);
+
+    auto crc = crc32_data(outBuf, 1048576);
+
+    free(outBuf);
+
+    EXPECT_EQ(crc, EXPECTED_CRC32);
+}