From 95996effaf04c87b7091c904e6545bc1e5e25aee Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Sun, 22 Sep 2019 12:23:41 -0700
Subject: Move the ifstream wrapper to common

---
 alc/helpers.cpp | 137 --------------------------------------------------------
 1 file changed, 137 deletions(-)

(limited to 'alc/helpers.cpp')

diff --git a/alc/helpers.cpp b/alc/helpers.cpp
index 1d19d004..1d534619 100644
--- a/alc/helpers.cpp
+++ b/alc/helpers.cpp
@@ -248,143 +248,6 @@ void FPUCtl::leave()
 
 #ifdef _WIN32
 
-namespace al {
-
-auto filebuf::underflow() -> int_type
-{
-    if(mFile != INVALID_HANDLE_VALUE && gptr() == egptr())
-    {
-        // Read in the next chunk of data, and set the pointers on success
-        DWORD got{};
-        if(ReadFile(mFile, mBuffer.data(), static_cast<DWORD>(mBuffer.size()), &got, nullptr))
-            setg(mBuffer.data(), mBuffer.data(), mBuffer.data()+got);
-    }
-    if(gptr() == egptr())
-        return traits_type::eof();
-    return traits_type::to_int_type(*gptr());
-}
-
-auto filebuf::seekoff(off_type offset, std::ios_base::seekdir whence, std::ios_base::openmode mode) -> pos_type
-{
-    if(mFile == INVALID_HANDLE_VALUE || (mode&std::ios_base::out) || !(mode&std::ios_base::in))
-        return traits_type::eof();
-
-    LARGE_INTEGER fpos{};
-    switch(whence)
-    {
-        case std::ios_base::beg:
-            fpos.QuadPart = offset;
-            if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_BEGIN))
-                return traits_type::eof();
-            break;
-
-        case std::ios_base::cur:
-            // If the offset remains in the current buffer range, just
-            // update the pointer.
-            if((offset >= 0 && offset < off_type(egptr()-gptr())) ||
-                (offset < 0 && -offset <= off_type(gptr()-eback())))
-            {
-                // Get the current file offset to report the correct read
-                // offset.
-                fpos.QuadPart = 0;
-                if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_CURRENT))
-                    return traits_type::eof();
-                setg(eback(), gptr()+offset, egptr());
-                return fpos.QuadPart - off_type(egptr()-gptr());
-            }
-            // Need to offset for the file offset being at egptr() while
-            // the requested offset is relative to gptr().
-            offset -= off_type(egptr()-gptr());
-            fpos.QuadPart = offset;
-            if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_CURRENT))
-                return traits_type::eof();
-            break;
-
-        case std::ios_base::end:
-            fpos.QuadPart = offset;
-            if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_END))
-                return traits_type::eof();
-            break;
-
-        default:
-            return traits_type::eof();
-    }
-    setg(nullptr, nullptr, nullptr);
-    return fpos.QuadPart;
-}
-
-auto filebuf::seekpos(pos_type pos, std::ios_base::openmode mode) -> pos_type
-{
-    // Simplified version of seekoff
-    if(mFile == INVALID_HANDLE_VALUE || (mode&std::ios_base::out) || !(mode&std::ios_base::in))
-        return traits_type::eof();
-
-    LARGE_INTEGER fpos{};
-    fpos.QuadPart = pos;
-    if(!SetFilePointerEx(mFile, fpos, &fpos, FILE_BEGIN))
-        return traits_type::eof();
-
-    setg(nullptr, nullptr, nullptr);
-    return fpos.QuadPart;
-}
-
-filebuf::~filebuf()
-{
-    if(mFile != INVALID_HANDLE_VALUE)
-        CloseHandle(mFile);
-    mFile = INVALID_HANDLE_VALUE;
-}
-
-bool filebuf::open(const wchar_t *filename, std::ios_base::openmode mode)
-{
-    if((mode&std::ios_base::out) || !(mode&std::ios_base::in))
-        return false;
-    HANDLE f{CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING,
-        FILE_ATTRIBUTE_NORMAL, nullptr)};
-    if(f == INVALID_HANDLE_VALUE) return false;
-
-    if(mFile != INVALID_HANDLE_VALUE)
-        CloseHandle(mFile);
-    mFile = f;
-
-    setg(nullptr, nullptr, nullptr);
-    return true;
-}
-bool filebuf::open(const char *filename, std::ios_base::openmode mode)
-{
-    std::wstring wname{utf8_to_wstr(filename)};
-    return open(wname.c_str(), mode);
-}
-
-
-ifstream::ifstream(const wchar_t *filename, std::ios_base::openmode mode)
-  : std::istream{nullptr}
-{
-    init(&mStreamBuf);
-
-    // Set the failbit if the file failed to open.
-    if((mode&std::ios_base::out) || !mStreamBuf.open(filename, mode|std::ios_base::in))
-        clear(failbit);
-}
-
-ifstream::ifstream(const char *filename, std::ios_base::openmode mode)
-  : std::istream{nullptr}
-{
-    init(&mStreamBuf);
-
-    // Set the failbit if the file failed to open.
-    if((mode&std::ios_base::out) || !mStreamBuf.open(filename, mode|std::ios_base::in))
-        clear(failbit);
-}
-
-/* This is only here to ensure the compiler doesn't define an implicit
- * destructor, which it tries to automatically inline and subsequently complain
- * it can't inline without excessive code growth.
- */
-ifstream::~ifstream() { }
-
-} // namespace al
-
 const PathNamePair &GetProcBinary()
 {
     static PathNamePair ret;
-- 
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