1 files changed, 32 insertions, 0 deletions
diff --git a/rfc4251.C b/rfc4251.C
new file mode 100644
index 0000000..0d59420
--- /dev/null
+++ b/rfc4251.C
@@ -0,0 +1,32 @@
+#include "rfc4251.h"
+
+rfc4251string::rfc4251string (std::vector<std::string> const & v) {
+	for (auto it = v.begin(); it != v.end();) {
+		if (it->size() == 0)
+			throw std::length_error{"name of zero length"};
+		if (value.size() + it->size() > std::numeric_limits<uint32_t>::max())
+			throw std::length_error{"32-bit limit for rfc4251string exceeded"};
+		value.insert(value.end(), it->data(), it->data() + it->size());
+		++it;
+		if (it == v.end())
+			break;
+		value.push_back(',');
+	}
+}
+
+rfc4251string::operator std::vector<std::string> () const {
+	std::vector<std::string> ret;
+	auto name_start = value.begin();
+	if (name_start != value.end())
+		for (auto it = name_start; ; ++it) {
+			if (it == value.end() or *it == ',') {
+				if (it == name_start)
+					throw std::length_error{"name of zero length"};
+				ret.emplace_back(name_start, it);
+				name_start = it + 1;
+			}
+			if (it == value.end())
+				break;
+		}
+	return ret;
+}