Further expansion of string api.

2 files changed, 34 insertions, 1 deletions

diff --git a/source/fud_string.cpp b/source/fud_string.cpp
index 27496ff..57bf1e0 100644
--- a/source/fud_string.cpp
+++ b/source/fud_string.cpp
@@ -157,6 +157,20 @@ FudStatus String::nullTerminate()
     return FudStatus::StringInvalid;
 }
 
+[[nodiscard]] std::optional<utf8> String::back()
+{
+    if (!valid()) {
+        return std::nullopt;
+    }
+
+    utf8 backChar = data()[m_length - 1];
+    if (Ascii::valid(backChar)) {
+        return backChar;
+    }
+
+    return std::nullopt;
+}
+
 std::optional<utf8> String::pop()
 {
     if (m_length < 1) {
diff --git a/source/libfud.cpp b/source/libfud.cpp
index 834082e..e1dad1d 100644
--- a/source/libfud.cpp
+++ b/source/libfud.cpp
@@ -17,10 +17,29 @@
 
 #include "libfud.hpp"
 
+#include <cstdlib>
+
 namespace fud {
 
-void fud()
+Result<String, FudStatus> getEnv(const char* name)
 {
+    using RetType = Result<String, FudStatus>;
+
+    if (name == nullptr) {
+        return RetType::error(FudStatus::NullPointer);
+    }
+
+    const char* resultString = getenv(name);
+    if (resultString == nullptr) {
+        return RetType::error(FudStatus::NotFound);
+    }
+
+    String envVar{resultString};
+    if (!envVar.valid()) {
+        return RetType::error(FudStatus::Failure);
+    }
+
+    return RetType::okay(std::move(envVar));
 }
 
 } // namespace fud