10 files changed, 136 insertions, 153 deletions

diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index 6a3f1fe08..d0e506689 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -29,7 +29,7 @@ if ($ENV{CI})
       if (BUILD_VERSION)
         # This leaves a trailing space on the last word, but we actually want that
         # because of how it's styled in the title bar.
-        set(BUILD_FULLNAME "${REPO_NAME} #${BUILD_VERSION} ")
+        set(BUILD_FULLNAME "${REPO_NAME} ${BUILD_VERSION} ")
       else()
         set(BUILD_FULLNAME "")
       endif()
@@ -41,6 +41,8 @@ configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scm_rev.cpp.in" "${CMAKE_CURRENT_SOU
 add_library(common STATIC
     alignment.h
     assert.h
+    detached_tasks.cpp
+    detached_tasks.h
     bit_field.h
     bit_set.h
     cityhash.cpp
@@ -87,6 +89,7 @@ add_library(common STATIC
     timer.cpp
     timer.h
     vector_math.h
+    web_result.h
 )
 
 if(ARCHITECTURE_x86_64)
diff --git a/src/common/detached_tasks.cpp b/src/common/detached_tasks.cpp
new file mode 100644
index 000000000..a347d9e02
--- /dev/null
+++ b/src/common/detached_tasks.cpp
@@ -0,0 +1,41 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <thread>
+#include "common/assert.h"
+#include "common/detached_tasks.h"
+
+namespace Common {
+
+DetachedTasks* DetachedTasks::instance = nullptr;
+
+DetachedTasks::DetachedTasks() {
+    ASSERT(instance == nullptr);
+    instance = this;
+}
+
+void DetachedTasks::WaitForAllTasks() {
+    std::unique_lock<std::mutex> lock(mutex);
+    cv.wait(lock, [this]() { return count == 0; });
+}
+
+DetachedTasks::~DetachedTasks() {
+    std::unique_lock<std::mutex> lock(mutex);
+    ASSERT(count == 0);
+    instance = nullptr;
+}
+
+void DetachedTasks::AddTask(std::function<void()> task) {
+    std::unique_lock<std::mutex> lock(instance->mutex);
+    ++instance->count;
+    std::thread([task{std::move(task)}]() {
+        task();
+        std::unique_lock<std::mutex> lock(instance->mutex);
+        --instance->count;
+        std::notify_all_at_thread_exit(instance->cv, std::move(lock));
+    })
+        .detach();
+}
+
+} // namespace Common
diff --git a/src/common/detached_tasks.h b/src/common/detached_tasks.h
new file mode 100644
index 000000000..5dd8fc27b
--- /dev/null
+++ b/src/common/detached_tasks.h
@@ -0,0 +1,40 @@
+// Copyright 2018 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <condition_variable>
+#include <functional>
+
+namespace Common {
+
+/**
+ * A background manager which ensures that all detached task is finished before program exits.
+ *
+ * Some tasks, telemetry submission for example, prefer executing asynchronously and don't care
+ * about the result. These tasks are suitable for std::thread::detach(). However, this is unsafe if
+ * the task is launched just before the program exits (which is a common case for telemetry), so we
+ * need to block on these tasks on program exit.
+ *
+ * To make detached task safe, a single DetachedTasks object should be placed in the main(), and
+ * call WaitForAllTasks() after all program execution but before global/static variable destruction.
+ * Any potentially unsafe detached task should be executed via DetachedTasks::AddTask.
+ */
+class DetachedTasks {
+public:
+    DetachedTasks();
+    ~DetachedTasks();
+    void WaitForAllTasks();
+
+    static void AddTask(std::function<void()> task);
+
+private:
+    static DetachedTasks* instance;
+
+    std::condition_variable cv;
+    std::mutex mutex;
+    int count = 0;
+};
+
+} // namespace Common
diff --git a/src/common/file_util.h b/src/common/file_util.h
index 3d8fe6264..571503d2a 100644
--- a/src/common/file_util.h
+++ b/src/common/file_util.h
@@ -285,7 +285,7 @@ private:
 template <typename T>
 void OpenFStream(T& fstream, const std::string& filename, std::ios_base::openmode openmode) {
 #ifdef _MSC_VER
-    fstream.open(Common::UTF8ToTStr(filename).c_str(), openmode);
+    fstream.open(Common::UTF8ToUTF16W(filename).c_str(), openmode);
 #else
     fstream.open(filename.c_str(), openmode);
 #endif
diff --git a/src/common/logging/text_formatter.cpp b/src/common/logging/text_formatter.cpp
index 05437c137..6a0605c63 100644
--- a/src/common/logging/text_formatter.cpp
+++ b/src/common/logging/text_formatter.cpp
@@ -31,7 +31,7 @@ std::string FormatLogMessage(const Entry& entry) {
 }
 
 void PrintMessage(const Entry& entry) {
-    auto str = FormatLogMessage(entry) + '\n';
+    const auto str = FormatLogMessage(entry).append(1, '\n');
     fputs(str.c_str(), stderr);
 }
 
diff --git a/src/common/param_package.cpp b/src/common/param_package.cpp
index 9526ca0c6..b916b4866 100644
--- a/src/common/param_package.cpp
+++ b/src/common/param_package.cpp
@@ -20,7 +20,15 @@ constexpr char KEY_VALUE_SEPARATOR_ESCAPE[] = "$0";
 constexpr char PARAM_SEPARATOR_ESCAPE[] = "$1";
 constexpr char ESCAPE_CHARACTER_ESCAPE[] = "$2";
 
+/// A placeholder for empty param packages to avoid empty strings
+/// (they may be recognized as "not set" by some frontend libraries like qt)
+constexpr char EMPTY_PLACEHOLDER[] = "[empty]";
+
 ParamPackage::ParamPackage(const std::string& serialized) {
+    if (serialized == EMPTY_PLACEHOLDER) {
+        return;
+    }
+
     std::vector<std::string> pairs;
     Common::SplitString(serialized, PARAM_SEPARATOR, pairs);
 
@@ -46,7 +54,7 @@ ParamPackage::ParamPackage(std::initializer_list<DataType::value_type> list) : d
 
 std::string ParamPackage::Serialize() const {
     if (data.empty())
-        return "";
+        return EMPTY_PLACEHOLDER;
 
     std::string result;
 
@@ -120,4 +128,12 @@ bool ParamPackage::Has(const std::string& key) const {
     return data.find(key) != data.end();
 }
 
+void ParamPackage::Erase(const std::string& key) {
+    data.erase(key);
+}
+
+void ParamPackage::Clear() {
+    data.clear();
+}
+
 } // namespace Common
diff --git a/src/common/param_package.h b/src/common/param_package.h
index 7842cd4ef..6a0a9b656 100644
--- a/src/common/param_package.h
+++ b/src/common/param_package.h
@@ -32,6 +32,8 @@ public:
     void Set(const std::string& key, int value);
     void Set(const std::string& key, float value);
     bool Has(const std::string& key) const;
+    void Erase(const std::string& key);
+    void Clear();
 
 private:
     DataType data;
diff --git a/src/common/string_util.cpp b/src/common/string_util.cpp
index c9a5425a7..731d1db34 100644
--- a/src/common/string_util.cpp
+++ b/src/common/string_util.cpp
@@ -5,6 +5,7 @@
 #include <algorithm>
 #include <cctype>
 #include <cerrno>
+#include <codecvt>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
@@ -13,11 +14,7 @@
 #include "common/string_util.h"
 
 #ifdef _WIN32
-#include <codecvt>
 #include <windows.h>
-#include "common/common_funcs.h"
-#else
-#include <iconv.h>
 #endif
 
 namespace Common {
@@ -195,11 +192,9 @@ std::string ReplaceAll(std::string result, const std::string& src, const std::st
     return result;
 }
 
-#ifdef _WIN32
-
 std::string UTF16ToUTF8(const std::u16string& input) {
-#if _MSC_VER >= 1900
-    // Workaround for missing char16_t/char32_t instantiations in MSVC2015
+#ifdef _MSC_VER
+    // Workaround for missing char16_t/char32_t instantiations in MSVC2017
     std::wstring_convert<std::codecvt_utf8_utf16<__int16>, __int16> convert;
     std::basic_string<__int16> tmp_buffer(input.cbegin(), input.cend());
     return convert.to_bytes(tmp_buffer);
@@ -210,8 +205,8 @@ std::string UTF16ToUTF8(const std::u16string& input) {
 }
 
 std::u16string UTF8ToUTF16(const std::string& input) {
-#if _MSC_VER >= 1900
-    // Workaround for missing char16_t/char32_t instantiations in MSVC2015
+#ifdef _MSC_VER
+    // Workaround for missing char16_t/char32_t instantiations in MSVC2017
     std::wstring_convert<std::codecvt_utf8_utf16<__int16>, __int16> convert;
     auto tmp_buffer = convert.from_bytes(input);
     return std::u16string(tmp_buffer.cbegin(), tmp_buffer.cend());
@@ -221,6 +216,7 @@ std::u16string UTF8ToUTF16(const std::string& input) {
 #endif
 }
 
+#ifdef _WIN32
 static std::wstring CPToUTF16(u32 code_page, const std::string& input) {
     const auto size =
         MultiByteToWideChar(code_page, 0, input.data(), static_cast<int>(input.size()), nullptr, 0);
@@ -261,124 +257,6 @@ std::wstring UTF8ToUTF16W(const std::string& input) {
     return CPToUTF16(CP_UTF8, input);
 }
 
-std::string SHIFTJISToUTF8(const std::string& input) {
-    return UTF16ToUTF8(CPToUTF16(932, input));
-}
-
-std::string CP1252ToUTF8(const std::string& input) {
-    return UTF16ToUTF8(CPToUTF16(1252, input));
-}
-
-#else
-
-template <typename T>
-static std::string CodeToUTF8(const char* fromcode, const std::basic_string<T>& input) {
-    iconv_t const conv_desc = iconv_open("UTF-8", fromcode);
-    if ((iconv_t)(-1) == conv_desc) {
-        LOG_ERROR(Common, "Iconv initialization failure [{}]: {}", fromcode, strerror(errno));
-        iconv_close(conv_desc);
-        return {};
-    }
-
-    const std::size_t in_bytes = sizeof(T) * input.size();
-    // Multiply by 4, which is the max number of bytes to encode a codepoint
-    const std::size_t out_buffer_size = 4 * in_bytes;
-
-    std::string out_buffer(out_buffer_size, '\0');
-
-    auto src_buffer = &input[0];
-    std::size_t src_bytes = in_bytes;
-    auto dst_buffer = &out_buffer[0];
-    std::size_t dst_bytes = out_buffer.size();
-
-    while (0 != src_bytes) {
-        std::size_t const iconv_result =
-            iconv(conv_desc, (char**)(&src_buffer), &src_bytes, &dst_buffer, &dst_bytes);
-
-        if (static_cast<std::size_t>(-1) == iconv_result) {
-            if (EILSEQ == errno || EINVAL == errno) {
-                // Try to skip the bad character
-                if (0 != src_bytes) {
-                    --src_bytes;
-                    ++src_buffer;
-                }
-            } else {
-                LOG_ERROR(Common, "iconv failure [{}]: {}", fromcode, strerror(errno));
-                break;
-            }
-        }
-    }
-
-    std::string result;
-    out_buffer.resize(out_buffer_size - dst_bytes);
-    out_buffer.swap(result);
-
-    iconv_close(conv_desc);
-
-    return result;
-}
-
-std::u16string UTF8ToUTF16(const std::string& input) {
-    iconv_t const conv_desc = iconv_open("UTF-16LE", "UTF-8");
-    if ((iconv_t)(-1) == conv_desc) {
-        LOG_ERROR(Common, "Iconv initialization failure [UTF-8]: {}", strerror(errno));
-        iconv_close(conv_desc);
-        return {};
-    }
-
-    const std::size_t in_bytes = sizeof(char) * input.size();
-    // Multiply by 4, which is the max number of bytes to encode a codepoint
-    const std::size_t out_buffer_size = 4 * sizeof(char16_t) * in_bytes;
-
-    std::u16string out_buffer(out_buffer_size, char16_t{});
-
-    char* src_buffer = const_cast<char*>(&input[0]);
-    std::size_t src_bytes = in_bytes;
-    char* dst_buffer = (char*)(&out_buffer[0]);
-    std::size_t dst_bytes = out_buffer.size();
-
-    while (0 != src_bytes) {
-        std::size_t const iconv_result =
-            iconv(conv_desc, &src_buffer, &src_bytes, &dst_buffer, &dst_bytes);
-
-        if (static_cast<std::size_t>(-1) == iconv_result) {
-            if (EILSEQ == errno || EINVAL == errno) {
-                // Try to skip the bad character
-                if (0 != src_bytes) {
-                    --src_bytes;
-                    ++src_buffer;
-                }
-            } else {
-                LOG_ERROR(Common, "iconv failure [UTF-8]: {}", strerror(errno));
-                break;
-            }
-        }
-    }
-
-    std::u16string result;
-    out_buffer.resize(out_buffer_size - dst_bytes);
-    out_buffer.swap(result);
-
-    iconv_close(conv_desc);
-
-    return result;
-}
-
-std::string UTF16ToUTF8(const std::u16string& input) {
-    return CodeToUTF8("UTF-16LE", input);
-}
-
-std::string CP1252ToUTF8(const std::string& input) {
-    // return CodeToUTF8("CP1252//TRANSLIT", input);
-    // return CodeToUTF8("CP1252//IGNORE", input);
-    return CodeToUTF8("CP1252", input);
-}
-
-std::string SHIFTJISToUTF8(const std::string& input) {
-    // return CodeToUTF8("CP932", input);
-    return CodeToUTF8("SJIS", input);
-}
-
 #endif
 
 std::string StringFromFixedZeroTerminatedBuffer(const char* buffer, std::size_t max_len) {
diff --git a/src/common/string_util.h b/src/common/string_util.h
index dcca6bc38..32bf6a19c 100644
--- a/src/common/string_util.h
+++ b/src/common/string_util.h
@@ -72,31 +72,10 @@ std::string ReplaceAll(std::string result, const std::string& src, const std::st
 std::string UTF16ToUTF8(const std::u16string& input);
 std::u16string UTF8ToUTF16(const std::string& input);
 
-std::string CP1252ToUTF8(const std::string& str);
-std::string SHIFTJISToUTF8(const std::string& str);
-
 #ifdef _WIN32
 std::string UTF16ToUTF8(const std::wstring& input);
 std::wstring UTF8ToUTF16W(const std::string& str);
 
-#ifdef _UNICODE
-inline std::string TStrToUTF8(const std::wstring& str) {
-    return UTF16ToUTF8(str);
-}
-
-inline std::wstring UTF8ToTStr(const std::string& str) {
-    return UTF8ToUTF16W(str);
-}
-#else
-inline std::string TStrToUTF8(const std::string& str) {
-    return str;
-}
-
-inline std::string UTF8ToTStr(const std::string& str) {
-    return str;
-}
-#endif
-
 #endif
 
 /**
diff --git a/src/common/web_result.h b/src/common/web_result.h
new file mode 100644
index 000000000..969926674
--- /dev/null
+++ b/src/common/web_result.h
@@ -0,0 +1,24 @@
+// Copyright 2018 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+
+namespace Common {
+struct WebResult {
+    enum class Code : u32 {
+        Success,
+        InvalidURL,
+        CredentialsMissing,
+        LibError,
+        HttpError,
+        WrongContent,
+        NoWebservice,
+    };
+    Code result_code;
+    std::string result_string;
+    std::string returned_data;
+};
+} // namespace Common