POSIX's 'open' returns int.

Clang doesn't admit an int -> void* cast for this.

src/xrCore/FS.h

@@ -410,7 +410,11 @@ class XRCORE_API IReader : public IReaderBase<IReader>
 class XRCORE_API CVirtualFileRW : public IReader
 {
 private:
+#if defined(WINDOWS)
     void *hSrcFile, *hSrcMap;
+#elif defined(LINUX)
+    int hSrcFile;
+#endif
 
 public:
     CVirtualFileRW(const char* cFileName);

src/xrCore/FS_internal.h

@@ -124,7 +124,11 @@ class CCompressedReader : public IReader
 class CVirtualFileReader : public IReader
 {
 private:
+#if defined(WINDOWS)
     void *hSrcFile, *hSrcMap;
+#elif defined(LINUX)
+    int hSrcFile;
+#endif
 
 public:
     CVirtualFileReader(const char* cFileName);

src/xrCore/LocatorAPI.cpp

@@ -256,47 +256,33 @@ const CLocatorAPI::file* CLocatorAPI::Register(
     return &*result;
 }
 
+#if defined(WINDOWS)
 IReader* open_chunk(void* ptr, u32 ID)
 {
     u32 dwType, dwSize;
     DWORD read_byte;
-#ifdef WINDOWS
     u32 pt = SetFilePointer(ptr, 0, nullptr, FILE_BEGIN);
     VERIFY(pt != INVALID_SET_FILE_POINTER);
-#else
-    ::lseek(ptr, 0L, SEEK_SET);
-#endif
+
     while (true)
     {
-#ifdef WINDOWS
         bool res = ReadFile(ptr, &dwType, 4, &read_byte, nullptr);
-#elif defined(LINUX)
-        read_byte = ::read(ptr, &dwType, 4);
-        bool res = (read_byte != -1);
-#endif
+
         if (read_byte == 0)
             return nullptr;
         //. VERIFY(res&&(read_byte==4));
 
-#ifdef WINDOWS
         res = ReadFile(ptr, &dwSize, 4, &read_byte, nullptr);
-#else
-        read_byte = ::read(ptr, &dwSize, 4);
-        res = (read_byte != -1);
-#endif
+
         if (read_byte == 0)
             return nullptr;
         //. VERIFY(res&&(read_byte==4));
 
         if ((dwType & ~CFS_CompressMark) == ID)
         {
             u8* src_data = xr_alloc<u8>(dwSize);
-#ifdef WINDOWS
             res = ReadFile(ptr, src_data, dwSize, &read_byte, nullptr);
-#else
-            read_byte = ::read(ptr, src_data, dwSize);
-            res = (read_byte != -1);
-#endif
+
             VERIFY(res && (read_byte == dwSize));
             if (dwType & CFS_CompressMark)
             {
@@ -308,17 +294,62 @@ IReader* open_chunk(void* ptr, u32 ID)
             }
             return new CTempReader(src_data, dwSize, 0);
         }
-#ifdef WINDOWS
+
         pt = SetFilePointer(ptr, dwSize, nullptr, FILE_CURRENT);
         if (pt == INVALID_SET_FILE_POINTER)
             return nullptr;
-#else
-        if(-1 == ::lseek(ptr, dwSize, SEEK_CUR))
-            return nullptr;
+    }
+    return nullptr;
+};
 #endif
+
+#if defined(LINUX)
+IReader* open_chunk(int fd, u32 ID)
+{
+    u32 dwType, dwSize;
+    DWORD read_byte;
+    ::lseek(fd, 0L, SEEK_SET);
+
+    while (true)
+    {
+        read_byte = ::read(fd, &dwType, 4);
+        bool res = (read_byte != -1);
+
+        if (read_byte == 0)
+            return nullptr;
+        //. VERIFY(res&&(read_byte==4));
+
+        read_byte = ::read(fd, &dwSize, 4);
+        res = (read_byte != -1);
+
+        if (read_byte == 0)
+            return nullptr;
+        //. VERIFY(res&&(read_byte==4));
+
+        if ((dwType & ~CFS_CompressMark) == ID)
+        {
+            u8* src_data = xr_alloc<u8>(dwSize);
+            read_byte = ::read(fd, src_data, dwSize);
+            res = (read_byte != -1);
+
+            VERIFY(res && (read_byte == dwSize));
+            if (dwType & CFS_CompressMark)
+            {
+                BYTE* dest;
+                unsigned dest_sz;
+                _decompressLZ(&dest, &dest_sz, src_data, dwSize);
+                xr_free(src_data);
+                return new CTempReader(dest, dest_sz, 0);
+            }
+            return new CTempReader(src_data, dwSize, 0);
+        }
+
+        if(-1 == ::lseek(fd, dwSize, SEEK_CUR))
+            return nullptr;
     }
     return nullptr;
 };
+#endif
 
 void CLocatorAPI::LoadArchive(archive& A, pcstr entrypoint)
 {
@@ -416,17 +447,21 @@ void CLocatorAPI::LoadArchive(archive& A, pcstr entrypoint)
 
 void CLocatorAPI::archive::open()
 {
+#if defined(WINDOWS)
     // Open the file
     if (hSrcFile && hSrcMap)
         return;
 
-#if defined(WINDOWS)
     hSrcFile = CreateFile(*path, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, nullptr, OPEN_EXISTING, 0, nullptr);
     R_ASSERT(hSrcFile != INVALID_HANDLE_VALUE);
     hSrcMap = CreateFileMapping(hSrcFile, nullptr, PAGE_READONLY, 0, 0, nullptr);
     R_ASSERT(hSrcMap != INVALID_HANDLE_VALUE);
     size = GetFileSize(hSrcFile, nullptr);
 #elif defined(LINUX)
+    // Open the file
+    if (hSrcFile)
+        return;
+
     hSrcFile = ::open(*path, O_RDONLY, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
     R_ASSERT(hSrcFile != -1);
     struct stat file_info;
@@ -505,7 +540,11 @@ bool CLocatorAPI::load_all_unloaded_archives()
     bool res = false;
     for (auto& archive : m_archives)
     {
+#if defined(WINDOWS)
         if (archive.hSrcFile == nullptr)
+#elif defined(LINUX)
+        if (archive.hSrcFile == 0)
+#endif
         {
             LoadArchive(archive);
             res = true;
@@ -593,7 +632,7 @@ bool ignore_path(const char* _path)
     else
         return true;
 #elif defined(LINUX)
-    HANDLE h  = ::open(_path, O_RDONLY | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
+    int h = ::open(_path, O_RDONLY | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
     if (h != -1)
     {
         ::close(h);
@@ -1294,7 +1333,11 @@ void CLocatorAPI::file_from_archive(CStreamReader*& R, pcstr fname, const file&
         make_string("cannot use stream reading for compressed data %s, do not compress data to be streamed", fname));
 
     R = new CStreamReader();
+#if defined(WINDOWS)
     R->construct(A.hSrcMap, desc.ptr, desc.size_compressed, A.size, BIG_FILE_READER_WINDOW_SIZE);
+#elif defined(LINUX)
+    R->construct(A.hSrcFile, desc.ptr, desc.size_compressed, A.size, BIG_FILE_READER_WINDOW_SIZE);
+#endif
 }
 
 void CLocatorAPI::copy_file_to_build(IWriter* W, IReader* r) { W->w(r->pointer(), r->length()); }
@@ -1506,7 +1549,7 @@ void CLocatorAPI::w_close(IWriter*& S)
             Register(fname, 0xffffffff, 0, 0, st.st_size, st.st_size, (u32)st.st_mtime);
 #elif defined(LINUX)
             struct stat st;
-            ::fstat(fname, &st);
+            ::stat(fname, &st);
             Register(fname, 0xffffffff, 0, 0, st.st_size, st.st_size, (u32)st.st_mtime);
 #endif
         }

src/xrCore/LocatorAPI.h

@@ -94,13 +94,18 @@ class XRCORE_API CLocatorAPI : Noncopyable
 
     struct archive
     {
-        u32 size;
-        u32 vfs_idx;
+        u32 size = 0;
+        u32 vfs_idx = u32(-1);
         shared_str path;
-        void *hSrcFile, *hSrcMap;
-        CInifile* header;
+#if defined(WINDOWS)
+        void *hSrcFile = nullptr;
+        void *hSrcMap = nullptr
+#elif defined(LINUX)
+        int hSrcFile = 0;
+#endif
+        CInifile* header = nullptr;
 
-        archive() : size(0), vfs_idx(u32(-1)), hSrcFile(nullptr), hSrcMap(nullptr), header(nullptr) {}
+        archive() = default;
         void open();
         void close();
     };

src/xrCore/file_stream_reader.cpp

@@ -22,18 +22,20 @@ void CFileStreamReader::construct(LPCSTR file_name, const u32& window_size)
     struct stat file_info;
     ::fstat(m_file_handle, &file_info);
     u32 file_size = (u32)file_info.st_size;
-    inherited::construct(&m_file_handle, 0, file_size, file_size, window_size);
+    inherited::construct(m_file_handle, 0, file_size, file_size, window_size);
 #endif
 }
 
 void CFileStreamReader::destroy()
 {
+#if defined(WINDOWS)
     HANDLE file_mapping_handle = this->file_mapping_handle();
     inherited::destroy();
-#if defined(WINDOWS)
     CloseHandle(file_mapping_handle);
     CloseHandle(m_file_handle);
 #elif defined(LINUX)
+    int file_mapping_handle = this->file_mapping_handle();
+    inherited::destroy();
     ::close(m_file_handle);
     m_file_handle = -1;
 #endif

src/xrCore/file_stream_reader.h

@@ -9,7 +9,11 @@ class CFileStreamReader : public CStreamReader
     typedef CStreamReader inherited;
 
 private:
+#if defined(WINDOWS)
     HANDLE m_file_handle;
+#elif defined(LINUX)
+    int m_file_handle;
+#endif
 
 public:
     virtual void construct(LPCSTR file_name, const u32& window_size);

src/xrCore/stream_reader.cpp

@@ -5,6 +5,7 @@
 #include <sys/mman.h>
 #endif
 
+#if defined(WINDOWS)
 void CStreamReader::construct(const HANDLE& file_mapping_handle, const u32& start_offset, const u32& file_size,
     const u32& archive_size, const u32& window_size)
 {
@@ -16,6 +17,19 @@ void CStreamReader::construct(const HANDLE& file_mapping_handle, const u32& star
 
     map(0);
 }
+#elif defined(LINUX)
+void CStreamReader::construct(int file_mapping_handle, const u32& start_offset, const u32& file_size,
+    const u32& archive_size, const u32& window_size)
+{
+    m_file_mapping_handle = file_mapping_handle;
+    m_start_offset = start_offset;
+    m_file_size = file_size;
+    m_archive_size = archive_size;
+    m_window_size = _max(window_size, FS.dwAllocGranularity);
+
+    map(0);
+}
+#endif
 
 void CStreamReader::destroy() { unmap(); }
 void CStreamReader::map(const u32& new_offset)

src/xrCore/stream_reader.h

@@ -4,7 +4,11 @@
 class XRCORE_API CStreamReader : public IReaderBase<CStreamReader>
 {
 private:
+#if defined(WINDOWS)
     HANDLE m_file_mapping_handle;
+#elif defined(LINUX)
+    int m_file_mapping_handle;
+#endif
     u32 m_start_offset;
     u32 m_file_size;
     u32 m_archive_size;
@@ -31,12 +35,21 @@ class XRCORE_API CStreamReader : public IReaderBase<CStreamReader>
     IC CStreamReader();
 
 public:
+#if defined(WINDOWS)
     virtual void construct(const HANDLE& file_mapping_handle, const u32& start_offset, const u32& file_size,
         const u32& archive_size, const u32& window_size);
+#elif defined(LINUX)
+    virtual void construct(int file_mapping_handle, const u32& start_offset, const u32& file_size,
+        const u32& archive_size, const u32& window_size);
+#endif
     virtual void destroy();
 
 public:
+#if defined(WINDOWS)
     IC const HANDLE& file_mapping_handle() const;
+#elif defined(LINUX)
+    IC const int& file_mapping_handle() const;
+#endif
     IC u32 elapsed() const;
     IC const u32& length() const;
     IC void seek(const int& offset);

src/xrCore/stream_reader_inline.h

@@ -18,7 +18,12 @@ IC CStreamReader& CStreamReader::operator=(const CStreamReader&)
     return (*this);
 }
 
+#if defined(WINDOWS)
 IC const HANDLE& CStreamReader::file_mapping_handle() const { return (m_file_mapping_handle); }
+#elif defined(LINUX)
+IC const int& CStreamReader::file_mapping_handle() const { return (m_file_mapping_handle); }
+#endif
+
 #if defined(WINDOWS)
 IC void CStreamReader::unmap() { UnmapViewOfFile(m_current_map_view_of_file); }
 #else

src/xrEngine/x_ray.cpp

@@ -458,7 +458,11 @@ int CApplication::Level_ID(LPCSTR name, LPCSTR ver, bool bSet)
     for (; it != it_e; ++it)
     {
         CLocatorAPI::archive& A = *it;
+#if defined(WINDOWS)
         if (A.hSrcFile == nullptr)
+#elif defined(LINUX)
+        if (A.hSrcFile == 0)
+#endif
         {
             LPCSTR ln = A.header->r_string("header", "level_name");
             LPCSTR lv = A.header->r_string("header", "level_ver");