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VFS: improve vfs::escape (escape NUL, LPT, COM...)

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Windows legacy trash.
This commit is contained in:
Nekotekina 2020-03-14 15:07:59 +03:00
parent 6a8f5e6b38
commit 70cd8afafa
1 changed files with 39 additions and 2 deletions
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41
rpcs3/Emu/VFS.cpp
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@ -296,8 +296,6 @@ std::string vfs::escape(std::string_view path, bool escape_slash)
return result; return result;
} }
result.reserve(path.size());
// Emulate NTS (limited) // Emulate NTS (limited)
auto get_char = [&](std::size_t pos) -> char2 auto get_char = [&](std::size_t pos) -> char2
{ {
@ -311,6 +309,45 @@ std::string vfs::escape(std::string_view path, bool escape_slash)
} }
}; };
// Escape NUL, LPT ant other trash
if (path.size() > 2)
{
// Pack first 3 characters
const u32 triple = std::bit_cast<le_t<u32>, u32>(toupper(path[0]) | toupper(path[1]) << 8 | toupper(path[2]) << 16);
switch (triple)
{
case "COM"_u32:
case "LPT"_u32:
{
if (path.size() >= 4 && path[3] >= '1' && path[4] <= '9')
{
if (path.size() == 4 || path[4] == '.')
{
// Escape first character (C or L)
result = reinterpret_cast<const char*>(u8"！");
}
}
break;
}
case "NUL"_u32:
case "CON"_u32:
case "AUX"_u32:
case "PRN"_u32:
{
if (path.size() == 3 || path[3] == '.')
{
result = reinterpret_cast<const char*>(u8"！");
}
break;
}
}
}
result.reserve(result.size() + path.size());
for (std::size_t i = 0, s = path.size(); i < s; i++) for (std::size_t i = 0, s = path.size(); i < s; i++)
{ {
switch (char2 c = path[i]) switch (char2 c = path[i])