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Qt: Better wayland detection to enforce xcb

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In certain cases, the platform can be "wayland-egl", "wayland-xcomposite", and other values for which I haven't found a full list yet. Instead of matching only "wayland", we now look for "wayland" anywhere in the `QT_QPA_PLATFORM` string in a case-insensitive manner.

Acknowledgements:
`CaseInsensitiveContains`' implementation was heavily inspired by GNU's non-standard glibc `strcasestr` function, which can be found here licensed under GPLv2 or later: https://ftp.gnu.org/gnu/libc/
This commit is contained in:
Joshua Vandaële
2025-08-04 19:34:31 +02:00
parent 6ca486ffb2
commit f8b85edd0c
4 changed files with 51 additions and 2 deletions
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16
Source/Core/Common/StringUtil.cpp
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@ -669,6 +669,22 @@ bool CaseInsensitiveEquals(std::string_view a, std::string_view b)
a, b, [](char ca, char cb) { return Common::ToLower(ca) == Common::ToLower(cb); });
}
bool CaseInsensitiveContains(std::string_view haystack, std::string_view needle)
{
if (needle.empty())
return true;
for (size_t i = 0; i + needle.size() <= haystack.size(); ++i)
{
if (std::ranges::equal(needle, haystack.substr(i, needle.size()),
[](char a, char b) { return Common::ToLower(a) == Common::ToLower(b); }))
{
return true;
}
}
return false;
}
bool CaseInsensitiveLess::operator()(std::string_view a, std::string_view b) const
{
return std::ranges::lexicographical_compare(