RethinkDB native connector work, minor fixes.

1 files changed, 46 insertions, 0 deletions

diff --git a/ext/librethinkdbxx/src/error.h b/ext/librethinkdbxx/src/error.h
new file mode 100644
index 00000000..ab75e248
--- /dev/null
+++ b/ext/librethinkdbxx/src/error.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include <cstdarg>
+#include <cstring>
+#include <string>
+#include <cerrno>
+
+namespace RethinkDB {
+
+// All errors thrown by the server have this type
+struct Error {
+    template <class ...T>
+    explicit Error(const char* format_, T... A) {
+        format(format_, A...);
+    }
+
+    Error() = default;
+    Error(Error&&) = default;
+    Error(const Error&) = default;
+
+    Error& operator= (Error&& other) {
+        message = std::move(other.message);
+        return *this;
+    }
+
+    static Error from_errno(const char* str){
+        return Error("%s: %s", str, strerror(errno));
+    }
+
+    // The error message
+    std::string message;
+
+private:
+    const size_t max_message_size = 2048;
+
+    void format(const char* format_, ...) {
+        va_list args;
+        va_start(args, format_);
+        char message_[max_message_size];
+        vsnprintf(message_, max_message_size, format_, args);
+        va_end(args);
+        message = message_;
+    }
+};
+
+}