core: implement basic XDG Base Specification support

1 files changed, 39 insertions, 0 deletions

diff --git a/src/environment.hpp b/src/environment.hpp
new file mode 100644
index 0000000..a6322cb
--- /dev/null
+++ b/src/environment.hpp
@@ -0,0 +1,39 @@
+#ifndef WANDA_ENVIRONMENT_HPP
+#define WANDA_ENVIRONMENT_HPP
+
+#include <unistd.h>
+
+#include <map>
+#include <string>
+
+namespace wanda
+{
+
+struct environment
+{
+    using map_type = std::map<std::string, std::string>;
+    using iterator = map_type::iterator;
+    using const_iterator = map_type::const_iterator;
+    using reference = map_type::reference;
+    using const_reference = map_type::const_reference;
+
+    explicit environment(char const *const *env = ::environ);
+
+    std::string &operator[](std::string const &variable);
+    std::string const &operator[](std::string const &variable) const;
+
+    iterator begin();
+    const_iterator begin() const;
+    const_iterator cbegin() const;
+
+    iterator end();
+    const_iterator end() const;
+    const_iterator cend() const;
+
+  private:
+    map_type m_cache{};
+};
+
+} // namespace wanda
+
+#endif
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