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// Copyright 2018 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "jni/AndroidCommon/AndroidCommon.h"
#include <algorithm>
#include <ios>
#include <span>
#include <string>
#include <string_view>
#include <vector>
#include <jni.h>
#include "Common/Assert.h"
#include "Common/Logging/Log.h"
#include "Common/StringUtil.h"
#include "jni/AndroidCommon/IDCache.h"
std::string GetJString(JNIEnv* env, jstring jstr)
{
const jchar* jchars = env->GetStringChars(jstr, nullptr);
const jsize length = env->GetStringLength(jstr);
const std::u16string_view string_view(reinterpret_cast<const char16_t*>(jchars), length);
std::string converted_string = UTF16ToUTF8(string_view);
env->ReleaseStringChars(jstr, jchars);
return converted_string;
}
jstring ToJString(JNIEnv* env, std::string_view str)
{
const std::u16string converted_string = UTF8ToUTF16(str);
return env->NewString(reinterpret_cast<const jchar*>(converted_string.data()),
converted_string.size());
}
std::vector<std::string> JStringArrayToVector(JNIEnv* env, jobjectArray array)
{
const jsize size = env->GetArrayLength(array);
std::vector<std::string> result;
result.reserve(size);
for (jsize i = 0; i < size; ++i)
{
jstring str = reinterpret_cast<jstring>(env->GetObjectArrayElement(array, i));
result.push_back(GetJString(env, str));
env->DeleteLocalRef(str);
}
return result;
}
jobjectArray SpanToJStringArray(JNIEnv* env, std::span<const std::string_view> span)
{
return SpanToJObjectArray(env, span, IDCache::GetStringClass(), ToJString);
}
jobjectArray SpanToJStringArray(JNIEnv* env, std::span<const std::string> span)
{
return SpanToJObjectArray(env, span, IDCache::GetStringClass(), ToJString);
}
bool IsPathAndroidContent(std::string_view uri)
{
return uri.starts_with("content://");
}
std::string OpenModeToAndroid(std::string mode)
{
// The 'b' specifier is not supported by Android. Since we're on POSIX, it's fine to just skip it.
std::erase(mode, 'b');
if (mode == "r")
return "r";
else if (mode == "w")
return "wt";
else if (mode == "a")
return "wa";
else if (mode == "r+")
return "rw";
else if (mode == "w+")
return "rwt";
else if (mode == "a+")
return "rwa";
ERROR_LOG_FMT(COMMON, "OpenModeToAndroid(std::string): Unsupported open mode: {}", mode);
return "";
}
std::string OpenModeToAndroid(std::ios_base::openmode mode)
{
// The 'b' specifier is not supported by Android. Since we're on POSIX, it's fine to just skip it.
mode &= ~std::ios_base::binary;
switch (mode)
{
case std::ios_base::in:
return "r";
case std::ios_base::out:
case std::ios_base::out | std::ios_base::trunc:
return "wt";
case std::ios_base::app:
case std::ios_base::out | std::ios_base::app:
return "wa";
case std::ios_base::in | std::ios_base::out:
return "rw";
case std::ios_base::in | std::ios_base::out | std::ios_base::trunc:
return "rwt";
case std::ios_base::in | std::ios_base::app:
case std::ios_base::in | std::ios_base::out | std::ios_base::app:
return "rwa";
default:
ERROR_LOG_FMT(COMMON,
"OpenModeToAndroid(std::ios_base::openmode): Unsupported open mode: {:#x}", mode);
return "";
}
}
int OpenAndroidContent(std::string_view uri, std::string_view mode)
{
JNIEnv* env = IDCache::GetEnvForThread();
jstring j_uri = ToJString(env, uri);
jstring j_mode = ToJString(env, mode);
jint result = env->CallStaticIntMethod(IDCache::GetContentHandlerClass(),
IDCache::GetContentHandlerOpenFd(), j_uri, j_mode);
env->DeleteLocalRef(j_uri);
env->DeleteLocalRef(j_mode);
return result;
}
bool DeleteAndroidContent(std::string_view uri)
{
JNIEnv* env = IDCache::GetEnvForThread();
jstring j_uri = ToJString(env, uri);
jboolean result = env->CallStaticBooleanMethod(IDCache::GetContentHandlerClass(),
IDCache::GetContentHandlerDelete(), j_uri);
env->DeleteLocalRef(j_uri);
return static_cast<bool>(result);
}
jlong GetAndroidContentSizeAndIsDirectory(std::string_view uri)
{
JNIEnv* env = IDCache::GetEnvForThread();
jstring j_uri = ToJString(env, uri);
jlong result = env->CallStaticLongMethod(
IDCache::GetContentHandlerClass(), IDCache::GetContentHandlerGetSizeAndIsDirectory(), j_uri);
env->DeleteLocalRef(j_uri);
return result;
}
std::string GetAndroidContentDisplayName(std::string_view uri)
{
JNIEnv* env = IDCache::GetEnvForThread();
jstring j_uri = ToJString(env, uri);
jstring j_result = reinterpret_cast<jstring>(env->CallStaticObjectMethod(
IDCache::GetContentHandlerClass(), IDCache::GetContentHandlerGetDisplayName(), j_uri));
env->DeleteLocalRef(j_uri);
if (!j_result)
return "";
std::string result = GetJString(env, j_result);
env->DeleteLocalRef(j_result);
return result;
}
std::vector<std::string> GetAndroidContentChildNames(std::string_view uri)
{
JNIEnv* env = IDCache::GetEnvForThread();
jstring j_uri = ToJString(env, uri);
jobjectArray j_result = reinterpret_cast<jobjectArray>(env->CallStaticObjectMethod(
IDCache::GetContentHandlerClass(), IDCache::GetContentHandlerGetChildNames(), j_uri, false));
std::vector<std::string> result = JStringArrayToVector(env, j_result);
env->DeleteLocalRef(j_uri);
env->DeleteLocalRef(j_result);
return result;
}
std::vector<std::string> DoFileSearchAndroidContent(std::string_view directory,
std::span<const std::string_view> extensions,
bool recursive)
{
JNIEnv* env = IDCache::GetEnvForThread();
jstring j_directory = ToJString(env, directory);
jobjectArray j_extensions = SpanToJStringArray(env, extensions);
jobjectArray j_result = reinterpret_cast<jobjectArray>(env->CallStaticObjectMethod(
IDCache::GetContentHandlerClass(), IDCache::GetContentHandlerDoFileSearch(), j_directory,
j_extensions, recursive));
std::vector<std::string> result = JStringArrayToVector(env, j_result);
env->DeleteLocalRef(j_directory);
env->DeleteLocalRef(j_extensions);
env->DeleteLocalRef(j_result);
return result;
}
int GetNetworkIpAddress()
{
JNIEnv* env = IDCache::GetEnvForThread();
return env->CallStaticIntMethod(IDCache::GetNetworkHelperClass(),
IDCache::GetNetworkHelperGetNetworkIpAddress());
}
int GetNetworkPrefixLength()
{
JNIEnv* env = IDCache::GetEnvForThread();
return env->CallStaticIntMethod(IDCache::GetNetworkHelperClass(),
IDCache::GetNetworkHelperGetNetworkPrefixLength());
}
int GetNetworkGateway()
{
JNIEnv* env = IDCache::GetEnvForThread();
return env->CallStaticIntMethod(IDCache::GetNetworkHelperClass(),
IDCache::GetNetworkHelperGetNetworkGateway());
}
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