From 9320ffdbbd1ba6134f0f75606efff791947bfe8d Mon Sep 17 00:00:00 2001
From: WerWolv <werwolv98@gmail.com>
Date: Sun, 15 Nov 2020 02:50:56 +0100
Subject: [PATCH] Add ASCII table to tools

---
 include/views/view_tools.hpp |   5 ++
 source/views/view_tools.cpp  | 111 ++++++++++++++++++++++++++++++++---
 2 files changed, 107 insertions(+), 9 deletions(-)

diff --git a/include/views/view_tools.hpp b/include/views/view_tools.hpp
index 8cfcb17c0..d0e8f5dd5 100644
--- a/include/views/view_tools.hpp
+++ b/include/views/view_tools.hpp
@@ -27,6 +27,11 @@ namespace hex {
 
         char *m_mangledBuffer = nullptr;
         char *m_demangledName = nullptr;
+
+        bool m_asciiTableShowOctal = false;
+
+        void drawDemangler();
+        void drawASCIITable();
     };
 
 }
\ No newline at end of file
diff --git a/source/views/view_tools.cpp b/source/views/view_tools.cpp
index 08ab2e25e..f594f3c76 100644
--- a/source/views/view_tools.cpp
+++ b/source/views/view_tools.cpp
@@ -18,16 +18,48 @@ namespace hex {
         free(this->m_demangledName);
     }
 
-    void ViewTools::createView() {
-        if (!this->m_windowOpen)
-            return;
-
-        if (ImGui::Begin("Tools", &this->m_windowOpen)) {
-
-            ImGui::Text("Itanium demangler");
-            ImGui::Separator();
-            ImGui::NewLine();
+    static std::string toASCIITableString(char c) {
+        switch (c) {
+            case 0:   return "NUL";
+            case 1:   return "SOH";
+            case 2:   return "STX";
+            case 3:   return "ETX";
+            case 4:   return "EOT";
+            case 5:   return "ENQ";
+            case 6:   return "ACK";
+            case 7:   return "BEL";
+            case 8:   return "BS";
+            case 9:   return "TAB";
+            case 10:  return "LF";
+            case 11:  return "VT";
+            case 12:  return "FF";
+            case 13:  return "CR";
+            case 14:  return "SO";
+            case 15:  return "SI";
+            case 16:  return "DLE";
+            case 17:  return "DC1";
+            case 18:  return "DC2";
+            case 19:  return "DC3";
+            case 20:  return "DC4";
+            case 21:  return "NAK";
+            case 22:  return "SYN";
+            case 23:  return "ETB";
+            case 24:  return "CAN";
+            case 25:  return "EM";
+            case 26:  return "SUB";
+            case 27:  return "ESC";
+            case 28:  return "FS";
+            case 29:  return "GS";
+            case 30:  return "RS";
+            case 31:  return "US";
+            case 32:  return "Space";
+            case 127: return "DEL";
+            default:  return std::string() + c;
+        }
+    }
 
+    void ViewTools::drawDemangler() {
+        if (ImGui::CollapsingHeader("Itanium demangler")) {
             if (ImGui::InputText("Mangled name", this->m_mangledBuffer, 0xFF'FFFF)) {
                 size_t length = 0;
                 int status = 0;
@@ -44,8 +76,69 @@ namespace hex {
             }
 
             ImGui::InputText("Demangled name", this->m_demangledName, strlen(this->m_demangledName), ImGuiInputTextFlags_ReadOnly);
+        }
+    }
 
+    void ViewTools::drawASCIITable() {
+        if (ImGui::CollapsingHeader("ASCII table")) {
+            ImGui::BeginTable("##asciitable", 4);
+            ImGui::TableSetupColumn("");
+            ImGui::TableSetupColumn("");
+            ImGui::TableSetupColumn("");
+            ImGui::TableSetupColumn("");
 
+            ImGui::TableNextColumn();
+
+            for (u8 tablePart = 0; tablePart < 4; tablePart++) {
+                ImGui::BeginTable("##asciitablepart", this->m_asciiTableShowOctal ? 4 : 3, ImGuiTableFlags_BordersInnerV | ImGuiTableFlags_BordersOuter | ImGuiTableFlags_RowBg);
+                ImGui::TableSetupColumn("dec");
+                if (this->m_asciiTableShowOctal)
+                    ImGui::TableSetupColumn("oct");
+                ImGui::TableSetupColumn("hex");
+                ImGui::TableSetupColumn("char");
+
+                ImGui::TableHeadersRow();
+
+                u32 rowCount = 0;
+                for (u8 i = 0; i < 0x80 / 4; i++) {
+                    ImGui::TableNextRow(ImGuiTableRowFlags_Headers);
+
+                    ImGui::TableNextColumn();
+                    ImGui::Text("%02d", i + 32 * tablePart);
+
+                    if (this->m_asciiTableShowOctal) {
+                        ImGui::TableNextColumn();
+                        ImGui::Text("0o%02o", i + 32 * tablePart);
+                    }
+
+                    ImGui::TableNextColumn();
+                    ImGui::Text("0x%02x", i + 32 * tablePart);
+
+                    ImGui::TableNextColumn();
+                    ImGui::Text("%s", toASCIITableString(i + 32 * tablePart).c_str());
+
+                    ImGui::TableSetBgColor(ImGuiTableBgTarget_RowBg0, ((rowCount % 2) == 0) ? 0xFF101010 : 0xFF303030);
+
+                    rowCount++;
+                }
+
+                ImGui::EndTable();
+                ImGui::TableNextColumn();
+            }
+            ImGui::EndTable();
+
+            ImGui::Checkbox("Show octal", &this->m_asciiTableShowOctal);
+        }
+    }
+
+    void ViewTools::createView() {
+        if (!this->m_windowOpen)
+            return;
+
+        if (ImGui::Begin("Tools", &this->m_windowOpen)) {
+
+            this->drawDemangler();
+            this->drawASCIITable();
 
         }
         ImGui::End();