Adding basic language support unfinished

src/dawn/asset/AssetLoader.cpp

@@ -91,6 +91,12 @@ size_t AssetLoader::loadRaw(uint8_t **buffer) {
   return read;
 }
 
+size_t AssetLoader::setPosition(size_t position) {
+  assertTrue(position >= 0);
+  this->rewind();
+  return this->skip(position);
+}
+
 AssetLoader::~AssetLoader() {
   if(this->handle != nullptr) {
     this->close();

src/dawn/asset/AssetLoader.hpp

@@ -71,6 +71,14 @@ namespace Dawn {
        */
       size_t getPosition();
 
+      /**
+       * Sets the position of the file read head.
+       * 
+       * @param position Position to set to.
+       * @return How many bytes were skipped / rewound.
+       */
+      size_t setPosition(size_t position);
+
       /**
        * Loads the entire file into a raw buffer.
        * @param buffer Pointer to where a pointer to the buffer will be stored.

src/dawn/asset/AssetManager.hpp

@@ -7,6 +7,7 @@
 #include "Asset.hpp"
 #include "util/array.hpp"
 
+#include "assets/LanguageAsset.hpp"
 #include "assets/TextureAsset.hpp"
 #include "assets/TilesetAsset.hpp"
 #include "assets/TrueTypeAsset.hpp"

src/dawn/asset/assets/CMakeLists.txt

@@ -6,6 +6,7 @@
 # Sources
 target_sources(${DAWN_TARGET_NAME}
   PRIVATE
+    LanguageAsset.cpp
     TextureAsset.cpp
     TilesetAsset.cpp
     TrueTypeAsset.cpp

src/dawn/asset/assets/LanguageAsset.cpp

@@ -0,0 +1,84 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "LanguageAsset.hpp"
+
+using namespace Dawn;
+
+LanguageAsset::LanguageAsset(AssetManager *man, std::string name) :
+  Asset(man, name),
+  loader(name + ".language")
+{
+
+}
+
+void LanguageAsset::updateSync() {
+
+}
+
+void LanguageAsset::updateAsync() {
+  assertTrue(this->state == 0x00);
+
+  // Open Asset
+  this->state = 0x01;
+  this->loader.open();
+
+  // Get Length
+  this->state = 0x02;
+  this->loader.end();
+  this->state = 0x03;
+  size_t len = this->loader.getPosition();
+  this->state = 0x04;
+  this->loader.rewind();
+
+  // Create buffer
+  this->state = 0x05;
+  size_t position = 0;
+
+  // Loop over CSV
+  while(position < len) {
+    this->loader.read(buffer, 1024);
+
+    // Get strings
+    uint8_t *keyStart = buffer;
+    uint8_t *keyEnd = (uint8_t*)strchr((char*)keyStart, '|');
+    *keyEnd = '\0';
+    uint8_t *valueStart = keyEnd + 1;
+    uint8_t *valueEnd = (uint8_t*)strchr((char*)valueStart, '|');
+
+    // Load value positions
+    struct AssetLanguageValue value;
+    value.begin = position + (size_t)(valueStart - buffer);
+    value.length = (size_t)(valueEnd - valueStart);
+
+    // Prepare for next string.
+    position = position + (size_t)(valueEnd - buffer + 1);
+    this->loader.rewind();
+    this->loader.skip(position);
+
+    // Store strings.
+    std::string key((char *)keyStart);
+    this->values[key] = value;
+  }
+
+  this->state = 0x06;
+  this->loader.rewind();
+
+  this->state = 0x07;
+  this->loaded = true;
+}
+
+std::string LanguageAsset::getValue(std::string key) {
+  assertTrue(this->state == 0x07);
+
+  // Get the positions
+  struct AssetLanguageValue value = this->values[key];
+
+  this->loader.setPosition(value.begin);
+  this->loader.read(buffer, value.length);
+  buffer[value.length] = '\0';
+  
+  return std::string((char *)buffer, value.length + 1);
+}

src/dawn/asset/assets/LanguageAsset.hpp

@@ -0,0 +1,31 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "../Asset.hpp"
+#include "../AssetLoader.hpp"
+
+namespace Dawn {
+  struct AssetLanguageValue {
+    size_t begin;
+    size_t length;
+  };
+
+  class LanguageAsset : public Asset {
+    protected:
+      AssetLoader loader;
+      uint8_t state = 0x00;
+      std::map<std::string, struct AssetLanguageValue> values;
+      uint8_t buffer[1024];
+
+    public:
+      LanguageAsset(AssetManager *man, std::string name);
+
+      void updateSync() override;
+      void updateAsync() override;
+
+      std::string getValue(std::string key);
+  };
+}