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Fix long path support in fs::statfs on Windows

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This commit is contained in:
Nekotekina 2019-10-27 19:17:27 +03:00
parent 839e088ae5
commit 46d692d5a6
1 changed files with 20 additions and 4 deletions
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24
Utilities/File.cpp
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@ -501,11 +501,27 @@ bool fs::statfs(const std::string& path, fs::device_stat& info)
ULARGE_INTEGER total_size;
ULARGE_INTEGER total_free;
// Get disk letter from path (TODO)
std::wstring disk(L"C:");
disk[0] = path[0];
// Convert path and return it back to the "short" format
const bool unc = path.size() > 2 && (path[0] == '\\' || path[0] == '/') && path[1] == path[0];
if (!GetDiskFreeSpaceExW(disk.c_str(), &avail_free, &total_size, &total_free))
std::wstring str = to_wchar(path).get() + (unc ? 6 : 4);
if (unc)
{
str[0] = '\\';
str[1] = '\\';
}
// Keep cutting path from right until it's short enough
while (str.size() > 256)
{
if (std::size_t x = str.find_last_of('\\') + 1)
str.resize(x - 1);
else
break;
}
if (!GetDiskFreeSpaceExW(str.c_str(), &avail_free, &total_size, &total_free))
{
g_tls_error = to_error(GetLastError());
return false;