Add a memory dump window

UI/ImDebugger/ImMemView.cpp

@@ -1,6 +1,7 @@
 #include <cctype>
 #include <cmath>
 #include <iomanip>
+#include <cstdio>
 #include <sstream>
 
 #include "ext/imgui/imgui.h"
@@ -9,6 +10,7 @@
 
 #include "ext/xxhash.h"
 #include "Common/StringUtils.h"
+#include "Common/File/FileUtil.h"
 #include "Core/Config.h"
 #include "Core/MemMap.h"
 #include "Core/Reporting.h"
@@ -838,3 +840,50 @@ void ImMemView::setHighlightType(MemBlockFlags flags) {
 		updateStatusBarText();
 	}
 }
+
+void ImMemDumpWindow::Draw(ImConfig &cfg) {
+	ImGui::SetNextWindowSize(ImVec2(200, 300), ImGuiCond_FirstUseEver);
+
+	if (!ImGui::Begin(Title(), &cfg.memDumpOpen)) {
+		ImGui::End();
+		return;
+	}
+
+	if (ImGui::Button("User RAM (0x08800000)")) {
+		address_ = 0x08800000;
+		size_ = 0x01800000;  // 24MB
+	}
+
+	ImGui::InputScalar("Starting address: ", ImGuiDataType_U32, &address_, NULL, NULL, "%08X");
+	ImGui::InputScalar("Size: ", ImGuiDataType_U32, &size_, NULL, NULL, "%08X");
+
+	ImGui::InputText("Filename: ", filename_, ARRAY_SIZE(filename_));
+
+	if (ImGui::Button("Dump!")) {
+		uint32_t validSize = Memory::ValidSize(address_, size_);
+		if (validSize != size_) {
+			errorMsg_ = "Address range out of bounds";
+			if (Memory::IsValidAddress(address_)) {
+				size_ = validSize;
+			}
+		} else if (strlen(filename_) == 0) {
+			errorMsg_ = "Please specify a valid filename";
+		} else {
+			FILE *file = File::OpenCFile(Path(filename_), "wb");
+			if (!file) {
+				errorMsg_ = "Couldn't open file for writing";
+			} else {
+				const uint8_t *ptr = Memory::GetPointer(address_);
+				fwrite(ptr, 1, size_, file);
+				fclose(file);
+				errorMsg_.clear();
+			}
+		}
+	}
+
+	if (!errorMsg_.empty()) {
+		ImGui::TextUnformatted(errorMsg_.data(), errorMsg_.data() + errorMsg_.size());
+	}
+
+	ImGui::End();
+}