client/show-privs: allow showing single char hints in table output

src/core/database_privileges/base.rs

@@ -101,3 +101,22 @@ pub fn db_priv_field_human_readable_name(name: &str) -> String {
         _ => format!("Unknown({})", name),
     }
 }
+
+/// Converts a database privilege field name to a single-character name.
+/// (the characters from the cli privilege editor)
+pub fn db_priv_field_single_character_name(name: &str) -> &str {
+    match name {
+        "select_priv" => "s",
+        "insert_priv" => "i",
+        "update_priv" => "u",
+        "delete_priv" => "d",
+        "create_priv" => "c",
+        "drop_priv" => "D",
+        "alter_priv" => "a",
+        "index_priv" => "I",
+        "create_tmp_table_priv" => "t",
+        "lock_tables_priv" => "l",
+        "references_priv" => "r",
+        _ => "?",
+    }
+}

src/core/protocol/commands/list_privileges.rs

@@ -13,6 +13,7 @@ use crate::core::{
     common::yn,
     database_privileges::{
         DATABASE_PRIVILEGE_FIELDS, DatabasePrivilegeRow, db_priv_field_human_readable_name,
+        db_priv_field_single_character_name,
     },
     protocol::request_validation::{NameValidationError, OwnerValidationError},
     types::{DbOrUser, MySQLDatabase},
@@ -23,7 +24,7 @@ pub type ListPrivilegesRequest = Option<Vec<MySQLDatabase>>;
 pub type ListPrivilegesResponse =
     BTreeMap<MySQLDatabase, Result<Vec<DatabasePrivilegeRow>, GetDatabasesPrivilegeDataError>>;
 
-pub fn print_list_privileges_output_status(output: &ListPrivilegesResponse) {
+pub fn print_list_privileges_output_status(output: &ListPrivilegesResponse, long_names: bool) {
     let mut final_privs_map: BTreeMap<MySQLDatabase, Vec<DatabasePrivilegeRow>> = BTreeMap::new();
     for (db_name, db_result) in output {
         match db_result {
@@ -45,7 +46,19 @@ pub fn print_list_privileges_output_status(output: &ListPrivilegesResponse) {
         table.add_row(Row::new(
             DATABASE_PRIVILEGE_FIELDS
                 .into_iter()
-                .map(db_priv_field_human_readable_name)
+                .map(|field| {
+                    if field == "Db" || field == "User" {
+                        db_priv_field_human_readable_name(field)
+                    } else if long_names {
+                        format!(
+                            "{} ({})",
+                            db_priv_field_human_readable_name(field),
+                            db_priv_field_single_character_name(field),
+                        )
+                    } else {
+                        db_priv_field_human_readable_name(field)
+                    }
+                })
                 .map(|name| Cell::new(&name))
                 .collect(),
         ));