this added OS implementation of zlib. this also prototyped extracting the first 512 bytes of a tar.gz file and displaying the content of the first 100 bytes (name of the first file in the tarball)

CMakeLists.txt

@@ -5,6 +5,8 @@ project(Tarstats__)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Werror -std=c++20")
 
-add_executable(tarstats_pp main.cpp tarconst.h tarfunc.cpp tarfunc.h)
-target_link_libraries(tarstats_pp)
+
+
+add_executable(tarstats_pp main.cpp tarconst.h tarfunc.cpp tarfunc.h)
+target_link_libraries(tarstats_pp -lz)
 

main.cpp

@@ -68,6 +68,12 @@ int main(int argc, char** argv) {
         test.close();
         if (x == '\213')
             std::cout << "success" << std::endl;
+        gzFile gzIn = gzopen("test4.tar.gz", "rb");
+        gzbuffer(gzIn, 512);
+        char* testbuf = new char[512];
+        gzread(gzIn, testbuf, 512);
+        std::string teststr (&testbuf[0], 100);
+        std::cout << teststr << '\n';
         return 0;
     }