cli: sort option for validators by version

cli-output/Cargo.toml

@@ -18,6 +18,7 @@ console = "0.15.0"
 humantime = "2.0.1"
 indicatif = "0.16.2"
 pretty-hex = "0.2.1"
+semver = "1.0.6"
 serde = "1.0.136"
 serde_json = "1.0.79"
 solana-account-decoder = { path = "../account-decoder", version = "=1.11.0" }

cli-output/src/cli_output.rs

@@ -356,6 +356,7 @@ pub enum CliValidatorsSortOrder {
     SkipRate,
     Stake,
     VoteAccount,
+    Version,
 }
 
 #[derive(Serialize, Deserialize)]
@@ -494,6 +495,22 @@ impl fmt::Display for CliValidators {
             CliValidatorsSortOrder::Stake => {
                 sorted_validators.sort_by_key(|a| a.activated_stake);
             }
+            CliValidatorsSortOrder::Version => {
+                sorted_validators.sort_by(|a, b| {
+                    use std::cmp::Ordering;
+                    let a_version = semver::Version::parse(a.version.as_str()).ok();
+                    let b_version = semver::Version::parse(b.version.as_str()).ok();
+                    match (a_version, b_version) {
+                        (None, None) => a.version.cmp(&b.version),
+                        (None, Some(_)) => Ordering::Less,
+                        (Some(_), None) => Ordering::Greater,
+                        (Some(va), Some(vb)) => match va.cmp(&vb) {
+                            Ordering::Equal => a.activated_stake.cmp(&b.activated_stake),
+                            ordering => ordering,
+                        },
+                    }
+                });
+            }
         }
 
         if self.validators_reverse_sort {