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2026-09-16 15:19:35

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie
2026-09-16 15:19:35 +00:00
parent 4fe5f62c38
commit 25d5f72dd6
1 changed files with 19 additions and 18 deletions
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src/core/file_sys/ips_layer.cpp
+19 -18
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@@ -100,8 +100,7 @@ VirtualFile PatchIPS(const VirtualFile& in, const VirtualFile& ips) {
struct IPSwitchRecord {
std::array<uint8_t, 256 - sizeof(size_t)> data;
size_t count;
std::vector<uint8_t> data;
};
struct IPSwitchCompiler::IPSwitchPatch {
::Common::unordered_map<u32, IPSwitchRecord> records;
@@ -122,22 +121,24 @@ static IPSwitchRecord EscapeStringSequences(std::string_view sv) {
IPSwitchRecord r{};
for (auto it = sv.cbegin(); it < sv.cend(); ) {
if (*it == '\\' && it + 1 < sv.cend()) {
switch (it[1]) {
case 'a': r.data[r.count] = '\a'; break;
case 'b': r.data[r.count] = '\b'; break;
case 'e': r.data[r.count] = '\e'; break;
case 'f': r.data[r.count] = '\f'; break;
case 'n': r.data[r.count] = '\n'; break;
case 'r': r.data[r.count] = '\r'; break;
case 't': r.data[r.count] = '\t'; break;
case 'v': r.data[r.count] = '\v'; break;
case '?': r.data[r.count] = '\?'; break;
default: r.data[r.count] = it[1]; break;
}
++r.count;
auto const escape_char = [it]() {
switch (it[1]) {
case 'a': return '\a';
case 'b': return '\b';
case 'e': return '\e';
case 'f': return '\f';
case 'n': return '\n';
case 'r': return '\r';
case 't': return '\t';
case 'v': return '\v';
case '?': return '\?';
default: return it[1];
}
}();
r.data.push_back(escape_char);
it += 2;
} else {
++r.count;
r.data.push_back(it);
++it;
}
}
@@ -223,8 +224,8 @@ void IPSwitchCompiler::Parse(std::span<u8 const> bytes) {
if (start <= line.cend() && end <= line.cend()) {
// Actually IPS wants ordering from {lsb, ..., msb} -- so LE and BE are inverted, fun!
auto const hs = Common::HexStringToVector({start, end}, is_little_endian);
r.data.resize(hs.size());
std::memcpy(r.data.data(), hs.data(), hs.size());
r.count = hs.size();
LOG_INFO(Loader, "[H] value @ {:#08X}", offset);
patches.back().records.insert_or_assign(u32(offset), std::move(r));
} else {
@@ -293,7 +294,7 @@ VirtualFile IPSwitchCompiler::Apply(const VirtualFile& in) const {
if (patch.enabled) {
for (const auto& record : patch.records) {
if (record.first < in_data.size()) {
auto replace_size = record.second.count;
auto replace_size = record.second.data.size();
if (record.first + replace_size > in_data.size())
replace_size = in_data.size() - record.first;
std::memcpy(in_data.data() + record.first, record.second.data.data(), replace_size);