Rework metadata to have a standard handling.

src/ScriptResolving/AngelScript/AngelScriptMetadata.hpp

@@ -0,0 +1,70 @@
+#ifndef PKMNLIB_ANGELSCRIPTMETADATA_HPP
+#define PKMNLIB_ANGELSCRIPTMETADATA_HPP
+
+class AngelscriptMetadata {
+public:
+    explicit AngelscriptMetadata(const std::string& metadataString) { Parse(metadataString); }
+
+    inline const ArbUt::StringView& GetIdentifier() const noexcept { return _identifier; }
+    inline const std::string& GetParameter(const ArbUt::StringView& name) const noexcept {
+        return _parameters.Get(name);
+    }
+
+private:
+    ArbUt::StringView _identifier;
+    ArbUt::Dictionary<ArbUt::StringView, std::string> _parameters;
+
+    size_t ReadUpToOrEnd(const std::string& s, const char symbol, size_t start) {
+        for (size_t i = start; i < s.length(); ++i) {
+            if (s.at(i) == symbol) {
+                return i;
+            }
+        }
+        return s.length();
+    }
+
+    size_t FindNextNonSpace(const std::string& s, size_t start) {
+        for (size_t i = start; i < s.length(); ++i) {
+            if (s.at(i) != ' ') {
+                return i;
+            }
+        }
+        return s.length();
+    }
+
+    void Parse(const std::string& metadataString) {
+        auto idEnd = ReadUpToOrEnd(metadataString, ' ', 0);
+        _identifier = ArbUt::StringView(metadataString.substr(0, idEnd).c_str(), idEnd);
+        auto current = idEnd;
+        while (true) {
+            current = FindNextNonSpace(metadataString, current);
+            if (current >= metadataString.length()){
+                break;
+            }
+            ParseParameter(metadataString, current);
+        }
+    }
+
+    void ParseParameter(const std::string& metadataString, size_t& current) {
+        auto start = current;
+        current = ReadUpToOrEnd(metadataString, '=', current);
+        auto name = ArbUt::StringView(metadataString.substr(start, current - start).c_str(), current - start);
+        current++;
+        start = current;
+        auto isQuoted = metadataString[current] == '"';
+        if (isQuoted) {
+            current++;
+            start++;
+            current = ReadUpToOrEnd(metadataString, '"', current);
+        } else {
+            current = ReadUpToOrEnd(metadataString, ' ', current);
+        }
+        auto value = metadataString.substr(start, current - start);
+        _parameters.Insert(name, value);
+        if (isQuoted){
+            current += 1;
+        }
+    }
+};
+
+#endif // PKMNLIB_ANGELSCRIPTMETADATA_HPP