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Fix loading of discordRPC when source path contains non-ASCII characters

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This commit is contained in:
Brandon McGriff 2021-09-15 17:54:22 -07:00
parent f5873c97bc
commit 2d3aeeb47d
1 changed files with 53 additions and 0 deletions
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53
libs/discordRPC.lua
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@ -24,6 +24,59 @@ if osname == "Linux" then
elseif osname == "OS X" then
discordRPClib = ffi.load(source.."/libs/discord-rpc.dylib")
elseif osname == "Windows" then
-- I would strongly advise never touching this. It was not trivial to get correct. -nightmareci
ffi.cdef[[
typedef uint32_t DWORD;
typedef char CHAR;
typedef CHAR *LPSTR;
typedef const CHAR *LPCSTR;
typedef wchar_t WCHAR;
typedef WCHAR *LPWSTR;
typedef LPWSTR PWSTR;
typedef const WCHAR *LPCWSTR;
static const DWORD CP_UTF8 = 65001;
int32_t MultiByteToWideChar(
DWORD CodePage,
DWORD dwFlags,
LPCSTR lpMultiByteStr,
int32_t cbMultiByte,
LPWSTR lpWideCharStr,
int32_t cchWideChar
);
int32_t WideCharToMultiByte(
DWORD CodePage,
DWORD dwFlags,
LPCWSTR lpWideCharStr,
int32_t cchWideChar,
LPSTR lpMultiByteStr,
int32_t cbMultiByte,
void* lpDefaultChar,
void* lpUsedDefaultChar
);
DWORD GetShortPathNameW(
LPCWSTR lpszLongPath,
LPWSTR lpszShortPath,
DWORD cchBuffer
);
]]
local originalWideSize = ffi.C.MultiByteToWideChar(ffi.C.CP_UTF8, 0, source, -1, nil, 0)
local originalWide = ffi.new('WCHAR[?]', originalWideSize)
ffi.C.MultiByteToWideChar(ffi.C.CP_UTF8, 0, source, -1, originalWide, originalWideSize)
local sourceSize = ffi.C.GetShortPathNameW(originalWide, nil, 0)
local sourceWide = ffi.new('WCHAR[?]', sourceSize)
ffi.C.GetShortPathNameW(originalWide, sourceWide, sourceSize)
local sourceChar = ffi.new('char[?]', sourceSize)
ffi.C.WideCharToMultiByte(ffi.C.CP_UTF8, 0, sourceWide, sourceSize, sourceChar, sourceSize, nil, nil)
source = ffi.string(sourceChar)
discordRPClib = ffi.load(source.."/libs/discord-rpc.dll")
else
-- Else it crashes later on