GameList: Add cover downloader

src/common/CMakeLists.txt

@@ -20,6 +20,8 @@ add_library(common
   hash_combine.h
   heap_array.h
   heterogeneous_containers.h
+  http_downloader.cpp
+  http_downloader.h
   layered_settings_interface.cpp
   layered_settings_interface.h
   log.cpp
@@ -86,6 +88,8 @@ if(WIN32)
     d3d11/stream_buffer.h
     d3d11/texture.cpp
     d3d11/texture.h
+    http_downloader_winhttp.cpp
+    http_downloader_winhttp.h
     thirdparty/StackWalker.cpp
     thirdparty/StackWalker.h
     win32_progress_callback.cpp
@@ -95,6 +99,16 @@ if(WIN32)
   target_link_libraries(common PRIVATE d3dcompiler.lib)
 endif()
 
+if(NOT WIN32 AND NOT ANDROID)
+  target_sources(common PRIVATE
+    http_downloader_curl.cpp
+    http_downloader_curl.h
+  )
+  target_link_libraries(common PRIVATE
+    CURL::libcurl
+  )
+endif()
+
 if(ANDROID)
   target_link_libraries(common PRIVATE log)
 endif()
@@ -242,29 +256,6 @@ if(ENABLE_VULKAN)
   endif()
 endif()
 
-
-
-if(ENABLE_CHEEVOS)
-  target_sources(common PRIVATE
-    http_downloader.cpp
-    http_downloader.h
-  )
-  if(WIN32)
-    target_sources(common PRIVATE
-      http_downloader_winhttp.cpp
-      http_downloader_winhttp.h
-    )
-  elseif(NOT ANDROID)
-    target_sources(common PRIVATE
-      http_downloader_curl.cpp
-      http_downloader_curl.h
-    )
-    target_link_libraries(common PRIVATE
-      CURL::libcurl
-    )
-  endif()
-endif()
-
 if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
   # We need -lrt for shm_unlink
   target_link_libraries(common PRIVATE rt)

src/common/http_downloader.cpp

@@ -183,4 +183,74 @@ u32 HTTPDownloader::LockedGetActiveRequestCount()
   return count;
 }
 
-} // namespace FrontendCommon
+std::string HTTPDownloader::URLEncode(const std::string_view& str)
+{
+  std::string ret;
+  ret.reserve(str.length() + ((str.length() + 3) / 4) * 3);
+
+  for (size_t i = 0, l = str.size(); i < l; i++)
+  {
+    const char c = str[i];
+    if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '-' || c == '_' ||
+        c == '.' || c == '!' || c == '~' || c == '*' || c == '\'' || c == '(' || c == ')')
+    {
+      ret.push_back(c);
+    }
+    else
+    {
+      ret.push_back('%');
+
+      const unsigned char n1 = static_cast<unsigned char>(c) >> 4;
+      const unsigned char n2 = static_cast<unsigned char>(c) & 0x0F;
+      ret.push_back((n1 >= 10) ? ('a' + (n1 - 10)) : ('0' + n1));
+      ret.push_back((n2 >= 10) ? ('a' + (n2 - 10)) : ('0' + n2));
+    }
+  }
+
+  return ret;
+}
+
+std::string HTTPDownloader::URLDecode(const std::string_view& str)
+{
+  std::string ret;
+  ret.reserve(str.length());
+
+  for (size_t i = 0, l = str.size(); i < l; i++)
+  {
+    const char c = str[i];
+    if (c == '+')
+    {
+      ret.push_back(c);
+    }
+    else if (c == '%')
+    {
+      if ((i + 2) >= str.length())
+        break;
+
+      const char clower = str[i + 1];
+      const char cupper = str[i + 2];
+      const unsigned char lower =
+        (clower >= '0' && clower <= '9') ?
+          static_cast<unsigned char>(clower - '0') :
+          ((clower >= 'a' && clower <= 'f') ?
+             static_cast<unsigned char>(clower - 'a') :
+             ((clower >= 'A' && clower <= 'F') ? static_cast<unsigned char>(clower - 'A') : 0));
+      const unsigned char upper =
+        (cupper >= '0' && cupper <= '9') ?
+          static_cast<unsigned char>(cupper - '0') :
+          ((cupper >= 'a' && cupper <= 'f') ?
+             static_cast<unsigned char>(cupper - 'a') :
+             ((cupper >= 'A' && cupper <= 'F') ? static_cast<unsigned char>(cupper - 'A') : 0));
+      const char dch = static_cast<char>(lower | (upper << 4));
+      ret.push_back(dch);
+    }
+    else
+    {
+      ret.push_back(c);
+    }
+  }
+
+  return std::string(str);
+}
+
+} // namespace Common

src/common/http_downloader.h

@@ -5,6 +5,7 @@
 #include <memory>
 #include <mutex>
 #include <string>
+#include <string_view>
 #include <vector>
 
 namespace Common {
@@ -53,6 +54,8 @@ public:
   virtual ~HTTPDownloader();
 
   static std::unique_ptr<HTTPDownloader> Create(const char* user_agent = DEFAULT_USER_AGENT);
+  static std::string URLEncode(const std::string_view& str);
+  static std::string URLDecode(const std::string_view& str);
 
   void SetTimeout(float timeout);
   void SetMaxActiveRequests(u32 max_active_requests);