关键节点

editor/app/Support/EnvironmentFlags.h

@@ -0,0 +1,54 @@
+#pragma once
+
+#include <algorithm>
+#include <cctype>
+#include <cstdlib>
+#include <optional>
+#include <string>
+
+namespace XCEngine::UI::Editor::App {
+
+inline bool IsEnvironmentFlagEnabled(const char* envName) {
+    if (envName == nullptr || envName[0] == '\0') {
+        return false;
+    }
+
+    const char* value = std::getenv(envName);
+    if (value == nullptr || value[0] == '\0') {
+        return false;
+    }
+
+    std::string normalized = value;
+    std::transform(
+        normalized.begin(),
+        normalized.end(),
+        normalized.begin(),
+        [](unsigned char character) {
+            return static_cast<char>(std::tolower(character));
+        });
+    return normalized != "0" &&
+        normalized != "false" &&
+        normalized != "off" &&
+        normalized != "no";
+}
+
+inline std::optional<int> TryGetEnvironmentInt(const char* envName) {
+    if (envName == nullptr || envName[0] == '\0') {
+        return std::nullopt;
+    }
+
+    const char* value = std::getenv(envName);
+    if (value == nullptr || value[0] == '\0') {
+        return std::nullopt;
+    }
+
+    char* parseEnd = nullptr;
+    const long parsed = std::strtol(value, &parseEnd, 10);
+    if (parseEnd == value || (parseEnd != nullptr && *parseEnd != '\0')) {
+        return std::nullopt;
+    }
+
+    return static_cast<int>(parsed);
+}
+
+} // namespace XCEngine::UI::Editor::App