feat: Added option to copy custom encoding strings from hex view

lib/libimhex/include/hex/helpers/encoding_file.hpp

@@ -5,6 +5,7 @@
 #include <map>
 #include <string_view>
 #include <vector>
+#include <span>
 
 #include <hex/helpers/fs.hpp>
 #include <hex/helpers/file.hpp>
@@ -21,7 +22,7 @@ namespace hex {
         EncodingFile() = default;
         EncodingFile(Type type, const std::fs::path &path);
 
-        [[nodiscard]] std::pair<std::string_view, size_t> getEncodingFor(const std::vector<u8> &buffer) const;
+        [[nodiscard]] std::pair<std::string_view, size_t> getEncodingFor(std::span<u8> buffer) const;
         [[nodiscard]] size_t getLongestSequence() const { return this->m_longestSequence; }
 
         [[nodiscard]] bool valid() const { return this->m_valid; }

lib/libimhex/source/helpers/encoding_file.cpp

@@ -17,7 +17,7 @@ namespace hex {
         this->m_valid = true;
     }
 
-    std::pair<std::string_view, size_t> EncodingFile::getEncodingFor(const std::vector<u8> &buffer) const {
+    std::pair<std::string_view, size_t> EncodingFile::getEncodingFor(std::span<u8> buffer) const {
         for (auto riter = this->m_mapping.crbegin(); riter != this->m_mapping.crend(); ++riter) {
             const auto &[size, mapping] = *riter;
 

plugins/builtin/include/ui/hex_editor.hpp

@@ -132,6 +132,10 @@ namespace hex::plugin::builtin::ui {
             this->m_characterCellPadding = characterCellPadding;
         }
 
+        [[nodiscard]] const std::optional<EncodingFile>& getCustomEncoding() const {
+            return this->m_currCustomEncoding;
+        }
+
         void setCustomEncoding(EncodingFile encoding) {
             this->m_currCustomEncoding = std::move(encoding);
         }

plugins/builtin/romfs/lang/en_US.json

@@ -655,6 +655,7 @@
         "hex.builtin.view.hex_editor.copy.cpp": "C++ Array",
         "hex.builtin.view.hex_editor.copy.crystal": "Crystal Array",
         "hex.builtin.view.hex_editor.copy.csharp": "C# Array",
+        "hex.builtin.view.hex_editor.copy.custom_encoding": "Custom Encoding",
         "hex.builtin.view.hex_editor.copy.go": "Go Array",
         "hex.builtin.view.hex_editor.copy.hex_view": "Hex View",
         "hex.builtin.view.hex_editor.copy.html": "HTML",

plugins/builtin/source/content/views/view_hex_editor.cpp

@@ -985,6 +985,23 @@ namespace hex::plugin::builtin {
                 if (ImGui::MenuItem("hex.builtin.view.hex_editor.copy.address"_lang))
                     ImGui::SetClipboardText(hex::format("0x{:08X}", selection->getStartAddress()).c_str());
 
+                auto &customEncoding = this->m_hexEditor.getCustomEncoding();
+                if (ImGui::MenuItem("hex.builtin.view.hex_editor.copy.custom_encoding"_lang, "", false, customEncoding.has_value())) {
+
+                    std::vector<u8> buffer(customEncoding->getLongestSequence(), 0x00);
+                    std::string string;
+
+                    u64 offset = selection->getStartAddress();
+                    while (offset < selection->getEndAddress()) {
+                        provider->read(offset, buffer.data(), std::min(buffer.size(), selection->size - (offset - selection->getStartAddress())));
+                        auto [result, size] = customEncoding->getEncodingFor(buffer);
+
+                        string += result;
+                        offset += size;
+                    };
+
+                    ImGui::SetClipboardText(string.c_str());
+                }
                 ImGui::Separator();
 
                 for (const auto &[unlocalizedName, callback] : ContentRegistry::DataFormatter::getEntries()) {