Add basic logging functionality

There's more that will need to be done, like actually calling log_init
somewhere, or actually logging stuff.

thprac/src/thprac/thprac_log.cpp

@@ -0,0 +1,74 @@
+#include <Windows.h>
+#include <Shlwapi.h>
+#include "thprac_log.h"
+#include "thprac_launcher_cfg.h"
+
+namespace THPrac {
+
+HANDLE hLog = INVALID_HANDLE_VALUE;
+bool console_open = false;
+
+void log_print(const char* msg, size_t len)
+{
+    DWORD byteRet;
+    if (console_open) {
+        WriteFile(GetStdHandle(STD_OUTPUT_HANDLE), msg, len, &byteRet, nullptr);
+    }
+    if (hLog != INVALID_HANDLE_VALUE) {
+        WriteFile(hLog, msg, len, &byteRet, nullptr);
+    }
+}
+
+void log_init(bool launcher, bool console)
+{
+    // The lengths I'll go to not allocate on the heap
+
+    constexpr unsigned int rot_max = 9;
+    constexpr unsigned int scratch_size = 32;
+    wchar_t fn_rot_temp_1[scratch_size] = {};
+    wchar_t fn_rot_temp_2[scratch_size] = {};
+
+    const wchar_t* const fn_launcher = L"thprac_launcher_log.txt";
+    const wchar_t* const fn_ingame = L"thprac_log.txt";
+
+    const wchar_t* const fn_rot_launcher = L"thprac_launcher_log.9.txt";
+    const wchar_t* const fn_rot_ingame = L"thprac_log.9.txt";
+
+    if (launcher) {
+        memcpy(fn_rot_temp_1, fn_rot_launcher, wcslen(fn_rot_launcher) * sizeof(wchar_t));
+    } else {
+        memcpy(fn_rot_temp_1, fn_rot_ingame, wcslen(fn_rot_ingame) * sizeof(wchar_t)); 
+    }
+
+    const unsigned int rot_num_off = launcher ? 20 : 11;
+    const wchar_t* const fn = launcher ? fn_launcher : fn_ingame;
+
+    memcpy(fn_rot_temp_2, fn_rot_temp_1, scratch_size * sizeof(wchar_t));
+
+    DeleteFileW(fn_rot_temp_1);
+
+    for (size_t i = 0; i < rot_max - 1; i++) {
+        fn_rot_temp_2[rot_num_off]--;
+        MoveFileW(fn_rot_temp_2, fn_rot_temp_1);
+        fn_rot_temp_1[rot_num_off]--;
+    }
+
+    MoveFileW(fn, fn_rot_temp_1);
+    hLog = CreateFileW(fn, GENERIC_WRITE, FILE_SHARE_READ, nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+
+    // Attach to existing console if it exists, open new console if no console exists but console is set to true
+    // I wonder if this is gonna make command prompt appear for a millisecond for some people
+    BOOL console_success = AllocConsole();
+
+    if (console_success && !console) {
+        FreeConsole();
+    } else if (!console_success) {
+        AttachConsole(GetCurrentProcessId());
+        console_open = true;
+    } else {
+        console_open = true;
+    }
+
+    log_print("THPrac: Logging initialized\r\n");
+}
+}

thprac/src/thprac/thprac_log.h

@@ -0,0 +1,22 @@
+#pragma once
+#include <cstring>
+#include <format>
+
+
+namespace THPrac {
+
+void log_print(const char* const msg, size_t len);
+
+inline void log_print(const char* const null_terminated) {
+    return log_print(null_terminated, strlen(null_terminated));
+}
+
+template <typename... Args>
+inline void log_printf(const std::format_string<Args...> fmt, Args&&... args) {
+    auto str = std::vformat(fmt.get(), std::make_format_args(args...));
+    return log_print(str.data(), str.length());
+}
+
+void log_init(bool launcher, bool console);
+
+}

thprac/thprac.vcxproj

@@ -74,6 +74,7 @@
     <ClInclude Include="src\thprac\thprac_version.h" />
     <ClInclude Include="src\thprac\utils\utils.h" />
     <ClInclude Include="src\thprac\utils\wininternal.h" />
+    <ClInclude Include="src\thprac\thprac_log.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="src\3rdParties\distorm\src\decoder.c" />
@@ -142,6 +143,7 @@
     <ClCompile Include="src\thprac\thprac_th19.cpp" />
     <ClCompile Include="src\thprac\thprac_utils.cpp" />
     <ClCompile Include="src\thprac\thprac_version.cpp" />
+    <ClCompile Include="src\thprac\thprac_log.cpp" />
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />

thprac/thprac.vcxproj.filters

@@ -38,6 +38,9 @@
     <Filter Include="3rdParties\distorm">
       <UniqueIdentifier>{653ef50e-68b6-4a06-8e84-3ddf50867dfe}</UniqueIdentifier>
     </Filter>
+    <Filter Include="THPrac Logging">
+      <UniqueIdentifier>{89b3b162-0590-4673-a372-b4699cc95cb7}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="resource.h">
@@ -205,6 +208,9 @@
     <ClInclude Include="src\thprac\thprac_th19.h">
       <Filter>THPrac Games</Filter>
     </ClInclude>
+    <ClInclude Include="src\thprac\thprac_log.h">
+      <Filter>THPrac Logging</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="src\thprac\thprac_utils.cpp">
@@ -405,6 +411,9 @@
     <ClCompile Include="src\thprac\thprac_th19.cpp">
       <Filter>THPrac Games</Filter>
     </ClCompile>
+    <ClCompile Include="src\thprac\thprac_log.cpp">
+      <Filter>THPrac Logging</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config">