From 7cafb8c5151e1017888a2749dcd0280082e249ec Mon Sep 17 00:00:00 2001
From: Connor McLaughlin <stenzek@gmail.com>
Date: Thu, 6 Aug 2020 19:33:02 +1000
Subject: [PATCH] Common: Add MinizipHelpers (RAM and UTF-8 compatible fopen)

---
 src/common/CMakeLists.txt                     |  4 +-
 src/common/common.vcxproj                     | 18 ++--
 src/common/common.vcxproj.filters             |  2 +
 src/common/minizip_helpers.cpp                | 90 +++++++++++++++++++
 src/common/minizip_helpers.h                  |  9 ++
 src/duckstation-qt/gamelistsettingswidget.cpp | 49 +---------
 6 files changed, 116 insertions(+), 56 deletions(-)
 create mode 100644 src/common/minizip_helpers.cpp
 create mode 100644 src/common/minizip_helpers.h

diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index b732f8194..cf26df141 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -51,6 +51,8 @@ add_library(common
   log.h
   md5_digest.cpp
   md5_digest.h
+  minizip_helpers.cpp
+  minizip_helpers.h
   null_audio_stream.cpp
   null_audio_stream.h
   rectangle.h
@@ -94,7 +96,7 @@ add_library(common
 
 target_include_directories(common PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/..")
 target_include_directories(common PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/..")
-target_link_libraries(common PRIVATE glad libcue stb Threads::Threads cubeb libchdr glslang vulkan-loader)
+target_link_libraries(common PRIVATE glad libcue stb Threads::Threads cubeb libchdr glslang vulkan-loader zlib minizip)
 
 if(WIN32)
   target_sources(common PRIVATE
diff --git a/src/common/common.vcxproj b/src/common/common.vcxproj
index ac71178a3..f1bec7b94 100644
--- a/src/common/common.vcxproj
+++ b/src/common/common.vcxproj
@@ -79,6 +79,7 @@
     <ClInclude Include="timestamp.h" />
     <ClInclude Include="types.h" />
     <ClInclude Include="cd_xa.h" />
+    <ClInclude Include="minizip_helpers.h" />
     <ClInclude Include="vulkan\builders.h" />
     <ClInclude Include="vulkan\context.h" />
     <ClInclude Include="vulkan\shader_cache.h" />
@@ -122,6 +123,7 @@
     <ClCompile Include="cd_subchannel_replacement.cpp" />
     <ClCompile Include="log.cpp" />
     <ClCompile Include="md5_digest.cpp" />
+    <ClCompile Include="minizip_helpers.cpp" />
     <ClCompile Include="null_audio_stream.cpp" />
     <ClCompile Include="progress_callback.cpp" />
     <ClCompile Include="state_wrapper.cpp" />
@@ -303,7 +305,7 @@
       <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <SDLCheck>true</SDLCheck>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)dep\zlib\include;$(SolutionDir)dep\minizip\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <ConformanceMode>true</ConformanceMode>
@@ -329,7 +331,7 @@
       <PreprocessorDefinitions>_ITERATOR_DEBUG_LEVEL=1;WIN32;_DEBUGFAST;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <SDLCheck>true</SDLCheck>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)dep\zlib\include;$(SolutionDir)dep\minizip\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <SupportJustMyCode>false</SupportJustMyCode>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -358,7 +360,7 @@
       <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <SDLCheck>true</SDLCheck>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)dep\zlib\include;$(SolutionDir)dep\minizip\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <ConformanceMode>true</ConformanceMode>
@@ -384,7 +386,7 @@
       <PreprocessorDefinitions>_ITERATOR_DEBUG_LEVEL=1;WIN32;_DEBUGFAST;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <SDLCheck>true</SDLCheck>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)dep\zlib\include;$(SolutionDir)dep\minizip\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BasicRuntimeChecks>Default</BasicRuntimeChecks>
       <SupportJustMyCode>false</SupportJustMyCode>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
@@ -414,7 +416,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <SDLCheck>true</SDLCheck>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)dep\zlib\include;$(SolutionDir)dep\minizip\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <WholeProgramOptimization>false</WholeProgramOptimization>
@@ -444,7 +446,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <SDLCheck>true</SDLCheck>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)dep\zlib\include;$(SolutionDir)dep\minizip\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <OmitFramePointers>true</OmitFramePointers>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <LanguageStandard>stdcpp17</LanguageStandard>
@@ -474,7 +476,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <SDLCheck>true</SDLCheck>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)dep\zlib\include;$(SolutionDir)dep\minizip\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <LanguageStandard>stdcpp17</LanguageStandard>
       <WholeProgramOptimization>false</WholeProgramOptimization>
@@ -504,7 +506,7 @@
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <SDLCheck>true</SDLCheck>
-      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>$(SolutionDir)dep\glad\include;$(SolutionDir)dep\cubeb\include;$(SolutionDir)dep\libcue\include;$(SolutionDir)dep\libchdr\include;$(SolutionDir)dep\stb\include;$(SolutionDir)dep\vulkan-loader\include;$(SolutionDir)dep\glslang;$(SolutionDir)dep\zlib\include;$(SolutionDir)dep\minizip\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <OmitFramePointers>true</OmitFramePointers>
       <MultiProcessorCompilation>true</MultiProcessorCompilation>
       <LanguageStandard>stdcpp17</LanguageStandard>
diff --git a/src/common/common.vcxproj.filters b/src/common/common.vcxproj.filters
index 20566df9f..d59115d98 100644
--- a/src/common/common.vcxproj.filters
+++ b/src/common/common.vcxproj.filters
@@ -99,6 +99,7 @@
       <Filter>vulkan</Filter>
     </ClInclude>
     <ClInclude Include="image.h" />
+    <ClInclude Include="minizip_helpers.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="jit_code_buffer.cpp" />
@@ -191,6 +192,7 @@
     </ClCompile>
     <ClCompile Include="image.cpp" />
     <ClCompile Include="cd_image_memory.cpp" />
+    <ClCompile Include="minizip_helpers.cpp" />
   </ItemGroup>
   <ItemGroup>
     <Natvis Include="bitfield.natvis" />
diff --git a/src/common/minizip_helpers.cpp b/src/common/minizip_helpers.cpp
new file mode 100644
index 000000000..ffa885d79
--- /dev/null
+++ b/src/common/minizip_helpers.cpp
@@ -0,0 +1,90 @@
+#include "minizip_helpers.h"
+#include "file_system.h"
+#include "ioapi.h"
+#include "types.h"
+#include <algorithm>
+
+namespace MinizipHelpers {
+
+unzFile OpenUnzMemoryFile(const void* memory, size_t memory_size)
+{
+  struct MemoryFileInfo
+  {
+    const u8* data;
+    ZPOS64_T data_size;
+    ZPOS64_T position;
+  };
+
+  MemoryFileInfo* fi = new MemoryFileInfo;
+  fi->data = static_cast<const u8*>(memory);
+  fi->data_size = static_cast<ZPOS64_T>(memory_size);
+  fi->position = 0;
+
+#define FI static_cast<MemoryFileInfo*>(stream)
+
+  zlib_filefunc64_def funcs = {
+    [](voidpf opaque, const void* filename, int mode) -> voidpf { return opaque; }, // open
+    [](voidpf opaque, voidpf stream, void* buf, uLong size) -> uLong {              // read
+      const ZPOS64_T remaining = FI->data_size - FI->position;
+      const ZPOS64_T to_read = std::min(remaining, static_cast<ZPOS64_T>(size));
+      if (to_read > 0)
+      {
+        std::memcpy(buf, FI->data + FI->position, to_read);
+        FI->position += to_read;
+      }
+
+      return static_cast<uLong>(to_read);
+    },
+    [](voidpf opaque, voidpf stream, const void* buf, uLong size) -> uLong { return 0; },         // write
+    [](voidpf opaque, voidpf stream) -> ZPOS64_T { return static_cast<ZPOS64_T>(FI->position); }, // tell
+    [](voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) -> long {                       // seek
+      ZPOS64_T new_position = FI->position;
+      if (origin == SEEK_SET)
+        new_position = static_cast<int>(offset);
+      else if (origin == SEEK_CUR)
+        new_position += static_cast<int>(offset);
+      else
+        new_position = FI->data_size;
+      if (new_position < 0 || new_position > FI->data_size)
+        return -1;
+
+      FI->position = new_position;
+      return 0;
+    },
+    [](voidpf opaque, voidpf stream) -> int {
+      delete FI;
+      return 0;
+    },                                                     // close
+    [](voidpf opaque, voidpf stream) -> int { return 0; }, // testerror
+    static_cast<voidpf>(fi)};
+
+#undef FI
+
+  unzFile zf = unzOpen2_64("", &funcs);
+  if (!zf)
+    delete fi;
+
+  return zf;
+}
+
+unzFile OpenUnzFile(const char* filename)
+{
+  zlib_filefunc64_def funcs;
+  fill_fopen64_filefunc(&funcs);
+
+  funcs.zopen64_file = [](voidpf opaque, const void* filename, int mode) -> voidpf {
+    const char* mode_fopen = NULL;
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
+      mode_fopen = "rb";
+    else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+      mode_fopen = "r+b";
+    else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+      mode_fopen = "wb";
+
+    return FileSystem::OpenCFile(static_cast<const char*>(filename), mode_fopen);
+  };
+
+  return unzOpen2_64(filename, &funcs);
+}
+
+} // namespace MinizipHelpers
\ No newline at end of file
diff --git a/src/common/minizip_helpers.h b/src/common/minizip_helpers.h
new file mode 100644
index 000000000..15a78b02b
--- /dev/null
+++ b/src/common/minizip_helpers.h
@@ -0,0 +1,9 @@
+#pragma once
+#include "unzip.h"
+
+namespace MinizipHelpers {
+
+unzFile OpenUnzMemoryFile(const void* memory, size_t memory_size);
+unzFile OpenUnzFile(const char* filename);
+
+} // namespace MinizipHelpers
\ No newline at end of file
diff --git a/src/duckstation-qt/gamelistsettingswidget.cpp b/src/duckstation-qt/gamelistsettingswidget.cpp
index 43bf75435..c298d3527 100644
--- a/src/duckstation-qt/gamelistsettingswidget.cpp
+++ b/src/duckstation-qt/gamelistsettingswidget.cpp
@@ -1,5 +1,6 @@
 #include "gamelistsettingswidget.h"
 #include "common/assert.h"
+#include "common/minizip_helpers.h"
 #include "common/string_util.h"
 #include "core/game_list.h"
 #include "gamelistsearchdirectoriesmodel.h"
@@ -18,7 +19,6 @@
 #include <QtWidgets/QMessageBox>
 #include <QtWidgets/QProgressDialog>
 #include <algorithm>
-#include <unzip.h>
 
 static constexpr char REDUMP_DOWNLOAD_URL[] = "http://redump.org/datfile/psx/serial,version,description";
 
@@ -153,52 +153,7 @@ static bool ExtractRedumpDatabase(const QByteArray& data, const QString& destina
   if (data.isEmpty())
     return false;
 
-  struct MemoryFileInfo
-  {
-    const QByteArray& data;
-    int position;
-  };
-
-  MemoryFileInfo fi{data, 0};
-
-#define FI static_cast<MemoryFileInfo*>(stream)
-
-  zlib_filefunc64_def funcs = {
-    [](voidpf opaque, const void* filename, int mode) -> voidpf { return opaque; }, // open
-    [](voidpf opaque, voidpf stream, void* buf, uLong size) -> uLong {              // read
-      const int remaining = FI->data.size() - FI->position;
-      const int to_read = std::min(remaining, static_cast<int>(size));
-      if (to_read > 0)
-      {
-        std::memcpy(buf, FI->data.constData() + FI->position, to_read);
-        FI->position += to_read;
-      }
-
-      return static_cast<uLong>(to_read);
-    },
-    [](voidpf opaque, voidpf stream, const void* buf, uLong size) -> uLong { return 0; },         // write
-    [](voidpf opaque, voidpf stream) -> ZPOS64_T { return static_cast<ZPOS64_T>(FI->position); }, // tell
-    [](voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) -> long {                       // seek
-      int new_position = FI->position;
-      if (origin == SEEK_SET)
-        new_position = static_cast<int>(offset);
-      else if (origin == SEEK_CUR)
-        new_position += static_cast<int>(offset);
-      else
-        new_position = FI->data.size();
-      if (new_position < 0 || new_position > FI->data.size())
-        return -1;
-
-      FI->position = new_position;
-      return 0;
-    },
-    [](voidpf opaque, voidpf stream) -> int { return 0; }, // close
-    [](voidpf opaque, voidpf stream) -> int { return 0; }, // testerror
-    static_cast<voidpf>(&fi)};
-
-#undef FI
-
-  unzFile zf = unzOpen2_64("", &funcs);
+  unzFile zf = MinizipHelpers::OpenUnzMemoryFile(data.constData(), data.size());
   if (!zf)
   {
     qCritical() << "unzOpen2_64() failed";