core: implement basic XDG Base Specification support

1 files changed, 73 insertions, 0 deletions

diff --git a/src/environment.cpp b/src/environment.cpp
new file mode 100644
index 0000000..2051573
--- /dev/null
+++ b/src/environment.cpp
@@ -0,0 +1,73 @@
+#include "environment.hpp"
+
+#include <iostream>
+#include <string>
+
+namespace wanda
+{
+
+environment::environment(char const *const *env)
+{
+    if (!env)
+    {
+        return;
+    }
+
+    std::string buffer{};
+    for (; *env != nullptr; ++env)
+    {
+        buffer = *env;
+        int split_point = buffer.find('=');
+        if (split_point != std::string::npos)
+        {
+            m_cache[buffer.substr(0, split_point)] = buffer.substr(split_point + 1);
+        }
+    }
+}
+
+std::string & environment::operator[](std::string const & variable)
+{
+    return m_cache[variable];
+}
+
+std::string const & environment::operator[](std::string const & variable) const
+{
+    static std::string const empty{};
+    if(auto needle = m_cache.find(variable); needle != cend())
+    {
+        return needle->second;
+    }
+    return empty;
+}
+
+environment::iterator environment::begin()
+{
+    return m_cache.begin();
+}
+
+environment::const_iterator environment::begin() const
+{
+    return m_cache.begin();
+}
+
+environment::const_iterator environment::cbegin() const
+{
+    return m_cache.cbegin();
+}
+
+environment::iterator environment::end()
+{
+    return m_cache.end();
+}
+
+environment::const_iterator environment::end() const
+{
+    return m_cache.end();
+}
+
+environment::const_iterator environment::cend() const
+{
+    return m_cache.cend();
+}
+
+} // namespace wanda
\ No newline at end of file