feat: add iw3 StringTable loading via generic loader

2025-06-14 08:47:57 -05:00 · 2024-01-20 16:32:11 +01:00
parent 4696011d9d
commit 8de849dc85
3 changed files with 145 additions and 0 deletions
--- a/src/ObjLoading/StringTable/StringTableLoader.h
+++ b/src/ObjLoading/StringTable/StringTableLoader.h
@ -0,0 +1,89 @@
+#pragma once
+
+#include "Csv/CsvStream.h"
+
+#include <algorithm>
+#include <istream>
+#include <type_traits>
+#include <vector>
+
+namespace string_table
+{
+    template<typename StringTableType, typename CellType> class AbstractStringTableLoader
+    {
+    protected:
+        AbstractStringTableLoader() = default;
+        virtual ~AbstractStringTableLoader() = default;
+        AbstractStringTableLoader(const AbstractStringTableLoader& other) = default;
+        AbstractStringTableLoader(AbstractStringTableLoader&& other) noexcept = default;
+        AbstractStringTableLoader& operator=(const AbstractStringTableLoader& other) = default;
+        AbstractStringTableLoader& operator=(AbstractStringTableLoader&& other) noexcept = default;
+
+        virtual void SetCellContent(CellType& cell, const char* content) = 0;
+
+        virtual void PostProcessStringTable(StringTableType* stringTable, const unsigned cellCount, MemoryManager& memory) {}
+
+    public:
+        StringTableType* LoadFromStream(const std::string& assetName, MemoryManager& memory, std::istream& stream)
+        {
+            auto* stringTable = memory.Create<StringTableType>();
+            stringTable->name = memory.Dup(assetName.c_str());
+
+            std::vector<std::vector<std::string>> csvLines;
+            std::vector<std::string> currentLine;
+            auto maxCols = 0u;
+            const CsvInputStream csv(stream);
+
+            while (csv.NextRow(currentLine))
+            {
+                if (currentLine.size() > maxCols)
+                    maxCols = currentLine.size();
+                csvLines.emplace_back(std::move(currentLine));
+                currentLine = std::vector<std::string>();
+            }
+
+            stringTable->columnCount = static_cast<int>(maxCols);
+            stringTable->rowCount = static_cast<int>(csvLines.size());
+            const auto cellCount = static_cast<unsigned>(stringTable->rowCount) * static_cast<unsigned>(stringTable->columnCount);
+
+            if (cellCount)
+            {
+                stringTable->values = static_cast<CellType*>(memory.Alloc(sizeof(CellType) * cellCount));
+
+                for (auto row = 0u; row < csvLines.size(); row++)
+                {
+                    const auto& rowValues = csvLines[row];
+                    for (auto col = 0u; col < maxCols; col++)
+                    {
+                        auto& cell = stringTable->values[row * maxCols + col];
+                        if (col >= rowValues.size() || rowValues[col].empty())
+                            SetCellContent(cell, "");
+                        else
+                            SetCellContent(cell, memory.Dup(rowValues[col].c_str()));
+                    }
+                }
+            }
+            else
+            {
+                stringTable->values = nullptr;
+            }
+
+            PostProcessStringTable(stringTable, cellCount, memory);
+
+            return stringTable;
+        }
+    };
+
+    // =================================
+    // V1: IW3
+    // - Cells are const char*
+    // =================================
+    template<typename StringTableType> class StringTableLoaderV1 final : public AbstractStringTableLoader<StringTableType, const char*>
+    {
+    protected:
+        void SetCellContent(const char*& cell, const char* content) override
+        {
+            cell = content;
+        }
+    };
+} // namespace string_table