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android: Use correct encoding when converting strings
The JNI functions that have "UTF" their name use "modified UTF-8" rather than the standard UTF-8 that Citra uses, at least according to Oracle's documentation, so it is incorrect for us to use them. This change fixes the problem by converting between UTF-8 and UTF-16 manually instead of letting JNI do it for us.
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@ -5,20 +5,28 @@
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#include "jni/android_common/android_common.h"
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#include <string>
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#include <string_view>
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#include <jni.h>
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std::string GetJString(JNIEnv *env, jstring jstr) {
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#include "common/string_util.h"
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std::string GetJString(JNIEnv* env, jstring jstr) {
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if (!jstr) {
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return {};
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}
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const char *s = env->GetStringUTFChars(jstr, nullptr);
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std::string result = s;
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env->ReleaseStringUTFChars(jstr, s);
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return result;
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const jchar* jchars = env->GetStringChars(jstr, nullptr);
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const jsize length = env->GetStringLength(jstr);
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const std::u16string_view string_view(reinterpret_cast<const char16_t*>(jchars), length);
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const std::string converted_string = Common::UTF16ToUTF8(string_view);
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env->ReleaseStringChars(jstr, jchars);
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return converted_string;
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}
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jstring ToJString(JNIEnv* env, const std::string& str) {
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return env->NewStringUTF(str.c_str());
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jstring ToJString(JNIEnv* env, std::string_view str) {
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const std::u16string converted_string = Common::UTF8ToUTF16(str);
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return env->NewString(reinterpret_cast<const jchar*>(converted_string.data()),
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static_cast<jint>(converted_string.size()));
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}
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@ -9,4 +9,4 @@
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#include <jni.h>
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std::string GetJString(JNIEnv* env, jstring jstr);
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jstring ToJString(JNIEnv* env, const std::string& str);
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jstring ToJString(JNIEnv* env, std::string_view str);
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@ -8,6 +8,8 @@
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#include <cstdlib>
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#include <locale>
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#include <sstream>
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#include <string>
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#include <string_view>
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#include "common/common_paths.h"
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#include "common/logging/log.h"
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#include "common/string_util.h"
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@ -135,14 +137,14 @@ std::string ReplaceAll(std::string result, const std::string& src, const std::st
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return result;
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}
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std::string UTF16ToUTF8(const std::u16string& input) {
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std::string UTF16ToUTF8(std::u16string_view input) {
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std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
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return convert.to_bytes(input);
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return convert.to_bytes(input.data(), input.data() + input.size());
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}
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std::u16string UTF8ToUTF16(const std::string& input) {
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std::u16string UTF8ToUTF16(std::string_view input) {
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std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
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return convert.from_bytes(input);
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return convert.from_bytes(input.data(), input.data() + input.size());
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}
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#ifdef _WIN32
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@ -7,6 +7,7 @@
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#include <algorithm>
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#include <cstddef>
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#include <string>
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#include <string_view>
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#include <vector>
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#include "common/common_types.h"
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#include "common/swap.h"
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@ -37,8 +38,8 @@ void BuildCompleteFilename(std::string& _CompleteFilename, const std::string& _P
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[[nodiscard]] std::string ReplaceAll(std::string result, const std::string& src,
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const std::string& dest);
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[[nodiscard]] std::string UTF16ToUTF8(const std::u16string& input);
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[[nodiscard]] std::u16string UTF8ToUTF16(const std::string& input);
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[[nodiscard]] std::string UTF16ToUTF8(std::u16string_view input);
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[[nodiscard]] std::u16string UTF8ToUTF16(std::string_view input);
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#ifdef _WIN32
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[[nodiscard]] std::string UTF16ToUTF8(const std::wstring& input);
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