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libCes CP932 fix for Windows/macOS, fix SaveDataDialog lockups (#878)

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* libs: fix CP932 iconv conversion on Windows and macOS

SDL3's SDL_SYSTEM_ICONV build option defaults off on Windows and macOS,
so SDL falls back to its own bundled iconv there, which only implements
ASCII/Latin-1/UTF/UCS. SDL_iconv_open("UTF-8", "CP932") always failed as
a result, crashing games that convert Shift-JIS strings via
sceCesMbcsStrToUtf8Str (e.g. save-data dialogs).

Add a small CesIconv shim selected at compile time: Windows converts one
character at a time via the Win32 codepage-932 APIs, replicating
SDL_iconv's chunked semantics and error codes; macOS calls real POSIX
iconv directly, since libiconv is always present there and does support
CP932, unlike SDL's fallback. Linux is untouched, since SDL already
links real system iconv by default there.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* libs: fix SaveDataDialog infinite loop on save

SaveDataDialogOpen() jumped straight from SAVE_STATUS_INITIALIZED (1) to
SAVE_STATUS_FINISHED (3), skipping SAVE_STATUS_RUNNING (2) entirely. At
least one title's save-write dialog stage only accepts a FINISHED status
after observing a RUNNING poll first; without it, the title assumed the
Open() request never took effect and re-issued it forever, hanging the
save flow (this only became visible once the CP932 crash above stopped
masking it).

Open() now starts the dialog as RUNNING. UpdateStatus() advances the
state machine, reporting RUNNING once before flipping to FINISHED for
subsequent polls; GetStatus() is untouched, staying a pure peek with no
side effects, matching the real SDK's pump-vs-peek split between the two
calls.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

* Add iconv linking to macOS

* Fix missing macOS iconv link for tests

* Fix CP932 edge cases and save dialog status consistency

---------

Co-authored-by: Claude Sonnet 5 <noreply@anthropic.com>
Co-authored-by: nmzik <Nmzik@mail.ru>
This commit is contained in:
Emil
2026-09-28 16:42:22 +02:00
committed by GitHub
parent a892097ff0
commit 05f92b6422
6 changed files with 409 additions and 16 deletions
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src/libs/libCes.cpp
+68 -2
View File
@@ -7,6 +7,16 @@
#include <array>
#include <cstring>
#if defined(_WIN32)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#ifndef NOMINMAX
#define NOMINMAX
#endif
#include <windows.h>
#endif
namespace Libs {
namespace LibCes {
@@ -213,6 +223,54 @@ static int KYTY_SYSV_ABI CesMbcsUcsContextInit(CesContext* context, const CesPro
return 0;
}
#if defined(_WIN32)
static size_t ConvertCp932ToUtf8(const char** inbuf, size_t* inbytesleft, char** outbuf,
size_t* outbytesleft) {
const auto* in = reinterpret_cast<const uint8_t*>(*inbuf);
while (*inbytesleft != 0) {
const uint8_t lead = in[0];
// Win32 accepts 0x80 as U+0080; the SJis1997 profile rejects this byte.
if (lead == 0x80) {
*inbuf = reinterpret_cast<const char*>(in);
return SDL_ICONV_EILSEQ;
}
const bool is_lead_byte = (lead >= 0x81 && lead <= 0x9f) || (lead >= 0xe0 && lead <= 0xfc);
const size_t char_len = is_lead_byte ? 2 : 1;
if (*inbytesleft < char_len) {
*inbuf = reinterpret_cast<const char*>(in);
return SDL_ICONV_EINVAL;
}
wchar_t wide[2];
const int wide_len =
MultiByteToWideChar(932, MB_ERR_INVALID_CHARS, reinterpret_cast<const char*>(in),
static_cast<int>(char_len), wide, 2);
if (wide_len <= 0) {
*inbuf = reinterpret_cast<const char*>(in);
return SDL_ICONV_EILSEQ;
}
char utf8[8];
const int utf8_len =
WideCharToMultiByte(CP_UTF8, 0, wide, wide_len, utf8, sizeof(utf8), nullptr, nullptr);
if (utf8_len <= 0 || static_cast<size_t>(utf8_len) > *outbytesleft) {
*inbuf = reinterpret_cast<const char*>(in);
return SDL_ICONV_E2BIG;
}
std::memcpy(*outbuf, utf8, static_cast<size_t>(utf8_len));
*outbuf += utf8_len;
*outbytesleft -= static_cast<size_t>(utf8_len);
in += char_len;
*inbytesleft -= char_len;
}
*inbuf = reinterpret_cast<const char*>(in);
return 0;
}
#endif
static int ConvertMbcsToUtf8(CesContext* context, const uint8_t* source, uint32_t source_max,
uint32_t* source_len, uint8_t* destination, uint32_t destination_max,
uint32_t* destination_len, bool measure) {
@@ -246,8 +304,10 @@ static int ConvertMbcsToUtf8(CesContext* context, const uint8_t* source, uint32_
++source_size;
}
const bool bounded_end = source_max != 0 && source_size == source_max;
const auto converter = SDL_iconv_open("UTF-8", context->profile->encoding);
#if !defined(_WIN32)
const auto converter = SDL_iconv_open("UTF-8", context->profile->encoding);
EXIT_IF(converter == reinterpret_cast<SDL_iconv_t>(-1));
#endif
const char* input = reinterpret_cast<const char*>(source);
size_t input_left = source_size;
@@ -258,7 +318,11 @@ static int ConvertMbcsToUtf8(CesContext* context, const uint8_t* source, uint32_
char* output = measure ? scratch.data() : reinterpret_cast<char*>(destination) + produced;
const size_t capacity = measure ? scratch.size() : destination_max - 1 - produced;
size_t output_left = capacity;
const auto status = SDL_iconv(converter, &input, &input_left, &output, &output_left);
#if defined(_WIN32)
const auto status = ConvertCp932ToUtf8(&input, &input_left, &output, &output_left);
#else
const auto status = SDL_iconv(converter, &input, &input_left, &output, &output_left);
#endif
produced += capacity - output_left;
if (status == SDL_ICONV_E2BIG) {
if (measure) {
@@ -277,7 +341,9 @@ static int ConvertMbcsToUtf8(CesContext* context, const uint8_t* source, uint32_
}
break;
} while (input_left != 0);
#if !defined(_WIN32)
SDL_iconv_close(converter);
#endif
if (!measure) {
destination[produced] = 0;