From 375799fa79d1af76f33299acc20a11a167a021f8 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@gmail.com>
Date: Thu, 17 Aug 2023 12:32:50 +0200
Subject: project: restructure libraries and build env

---
 source/lib/system/src/environment.cpp | 71 +++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 source/lib/system/src/environment.cpp

(limited to 'source/lib/system/src/environment.cpp')

diff --git a/source/lib/system/src/environment.cpp b/source/lib/system/src/environment.cpp
new file mode 100644
index 0000000..8f79531
--- /dev/null
+++ b/source/lib/system/src/environment.cpp
@@ -0,0 +1,71 @@
+#include "wanda/system/environment.hpp"
+
+#include <string>
+
+namespace wanda::system
+{
+  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::system
\ No newline at end of file
-- 
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