[PATCH v2 1/2] protocol: add protocol version formatting function

[Josh Steadmon <steadmon@google.com>]

Add a function to get human-readable names for the various wire protocol
versions.

Signed-off-by: Josh Steadmon <steadmon@google.com>
---
 protocol.c | 14 ++++++++++++++
 protocol.h |  6 ++++++
 2 files changed, 20 insertions(+)

diff --git a/protocol.c b/protocol.c
index 052d7edbb9..7ec7ce896e 100644
--- a/protocol.c
+++ b/protocol.c
@@ -14,6 +14,20 @@ static enum protocol_version parse_protocol_version(const char *value)
 		return protocol_unknown_version;
 }
 
+const char *format_protocol_version(enum protocol_version version)
+{
+	switch (version) {
+		case protocol_v0:
+			return "0";
+		case protocol_v1:
+			return "1";
+		case protocol_v2:
+			return "2";
+		default:
+			return "UNKNOWN_VERSION";
+	}
+}
+
 enum protocol_version get_protocol_version_config(void)
 {
 	const char *value;
diff --git a/protocol.h b/protocol.h
index cef1a4a01c..22e7a70912 100644
--- a/protocol.h
+++ b/protocol.h
@@ -8,6 +8,12 @@ enum protocol_version {
 	protocol_v2 = 2,
 };
 
+/*
+ * Return a string representation for a given protocol version. Mainly used to
+ * handle protocol_unknown_version nicely.
+ */
+const char *format_protocol_version(enum protocol_version);
+
 /*
  * Used by a client to determine which protocol version to request be used when
  * communicating with a server, reflecting the configured value of the
-- 
2.32.0.554.ge1b32706d8-goog