Added dashed-settings and support for unicode dash in cli arguments

base/base/argsToConfig.cpp

@@ -3,13 +3,29 @@
 #include <Poco/Util/LayeredConfiguration.h>
 #include <Poco/Util/MapConfiguration.h>
 
-
-void argsToConfig(const Poco::Util::Application::ArgVec & argv, Poco::Util::LayeredConfiguration & config, int priority)
+void argsToConfig(const Poco::Util::Application::ArgVec & argv,
+                  Poco::Util::LayeredConfiguration & config,
+                  int priority,
+                  const std::unordered_set<std::string>* alias_names)
 {
     /// Parsing all args and converting to config layer
     /// Test: -- --1=1 --1=2 --3 5 7 8 -9 10 -11=12 14= 15== --16==17 --=18 --19= --20 21 22 --23 --24 25 --26 -27 28 ---29=30 -- ----31 32 --33 3-4
     Poco::AutoPtr<Poco::Util::MapConfiguration> map_config = new Poco::Util::MapConfiguration;
     std::string key;
+
+    auto add_arg = [&map_config, &alias_names](const std::string & k, const std::string & v)
+    {
+        map_config->setString(k, v);
+
+        if (alias_names && !alias_names->contains(k))
+        {
+            std::string alias_key = k;
+            std::replace(alias_key.begin(), alias_key.end(), '-', '_');
+            if (alias_names->contains(alias_key))
+                map_config->setString(alias_key, v);
+        }
+    };
+
     for (const auto & arg : argv)
     {
         auto key_start = arg.find_first_not_of('-');
@@ -19,7 +35,7 @@ void argsToConfig(const Poco::Util::Application::ArgVec & argv, Poco::Util::Laye
         // old saved '--key', will set to some true value "1"
         if (!key.empty() && pos_minus != std::string::npos && pos_minus < key_start)
         {
-            map_config->setString(key, "1");
+            add_arg(key, "1");
             key = "";
         }
 
@@ -29,7 +45,7 @@ void argsToConfig(const Poco::Util::Application::ArgVec & argv, Poco::Util::Laye
             {
                 if (pos_minus == std::string::npos || pos_minus > key_start)
                 {
-                    map_config->setString(key, arg);
+                    add_arg(key, arg);
                 }
                 key = "";
             }
@@ -55,7 +71,7 @@ void argsToConfig(const Poco::Util::Application::ArgVec & argv, Poco::Util::Laye
         if (arg.size() > pos_eq)
             value = arg.substr(pos_eq + 1);
 
-        map_config->setString(key, value);
+        add_arg(key, value);
         key = "";
     }
 

base/base/argsToConfig.h

@@ -1,6 +1,8 @@
 #pragma once
 
 #include <Poco/Util/Application.h>
+#include <string>
+#include <unordered_set>
 
 namespace Poco::Util
 {
@@ -8,4 +10,7 @@ class LayeredConfiguration; // NOLINT(cppcoreguidelines-virtual-class-destructor
 }
 
 /// Import extra command line arguments to configuration. These are command line arguments after --.
-void argsToConfig(const Poco::Util::Application::ArgVec & argv, Poco::Util::LayeredConfiguration & config, int priority);
+void argsToConfig(const Poco::Util::Application::ArgVec & argv,
+                  Poco::Util::LayeredConfiguration & config,
+                  int priority,
+                  const std::unordered_set<std::string>* registered_alias_names = nullptr);

src/Client/ClientBase.cpp

@@ -68,6 +68,7 @@
 #include <iostream>
 #include <filesystem>
 #include <map>
+#include <regex>
 #include <unordered_map>
 
 #include "config_version.h"
@@ -120,6 +121,7 @@ namespace ProfileEvents
 namespace
 {
 constexpr UInt64 THREAD_GROUP_ID = 0;
+const std::string UNICODE_DASH = "—";
 }
 
 namespace DB
@@ -2395,6 +2397,54 @@ struct TransparentStringHash
     }
 };
 
+/*
+ * This functor is used to parse command line arguments and replace dashes with underscores,
+ * allowing options to be specified using either dashes or underscores.
+ */
+class OptionsAliasParser
+{
+public:
+    explicit OptionsAliasParser(const boost::program_options::options_description& options)
+    {
+        options_names.reserve(options.options().size());
+        for (const auto& option : options.options())
+            options_names.insert(option->long_name());
+    }
+
+    /*
+     * Parses arguments by replacing dashes with underscores, and matches the resulting name with known options
+     * Implements boost::program_options::ext_parser logic
+     */
+    std::pair<std::string, std::string> operator()(const std::string& token) const
+    {
+        if (token.find("--") != 0)
+            return {};
+        std::string arg = token.substr(2);
+
+        // divide token by '=' to separate key and value if options style=long_allow_adjacent
+        auto pos_eq = arg.find('=');
+        std::string key = arg.substr(0, pos_eq);
+
+        if (options_names.contains(key))
+            // option does not require any changes, because it is already correct
+            return {};
+
+        std::replace(key.begin(), key.end(), '-', '_');
+        if (!options_names.contains(key))
+            // after replacing '-' with '_' argument is still unknown
+            return {};
+
+        std::string value;
+        if (pos_eq != std::string::npos && pos_eq < arg.size())
+            value = arg.substr(pos_eq + 1);
+
+        return {key, value};
+    }
+
+private:
+    std::unordered_set<std::string> options_names;
+};
+
 }
 
 
@@ -2445,7 +2495,10 @@ void ClientBase::parseAndCheckOptions(OptionsDescription & options_description,
     }
 
     /// Parse main commandline options.
-    auto parser = po::command_line_parser(arguments).options(options_description.main_description.value()).allow_unregistered();
+    auto parser = po::command_line_parser(arguments)
+                      .options(options_description.main_description.value())
+                      .extra_parser(OptionsAliasParser(options_description.main_description.value()))
+                      .allow_unregistered();
     po::parsed_options parsed = parser.run();
 
     /// Check unrecognized options without positional options.
@@ -2487,6 +2540,11 @@ void ClientBase::init(int argc, char ** argv)
 
     readArguments(argc, argv, common_arguments, external_tables_arguments, hosts_and_ports_arguments);
 
+    /// Support for Unicode dashes
+    /// Interpret Unicode dash as default double-dash
+    for (auto & arg : common_arguments)
+        arg = std::regex_replace(arg, std::regex(UNICODE_DASH), "--");
+
     po::variables_map options;
     OptionsDescription options_description;
     options_description.main_description.emplace(createOptionsDescription("Main options", terminal_width));
@@ -2660,7 +2718,14 @@ void ClientBase::init(int argc, char ** argv)
     profile_events.delay_ms = options["profile-events-delay-ms"].as<UInt64>();
 
     processOptions(options_description, options, external_tables_arguments, hosts_and_ports_arguments);
-    argsToConfig(common_arguments, config(), 100);
+    {
+        std::unordered_set<std::string> alias_names;
+        alias_names.reserve(options_description.main_description->options().size());
+        for (const auto& option : options_description.main_description->options())
+            alias_names.insert(option->long_name());
+        argsToConfig(common_arguments, config(), 100, &alias_names);
+    }
+
     clearPasswordFromCommandLine(argc, argv);
 
     /// Limit on total memory usage

tests/queries/0_stateless/02718_cli_dashed_options_parsing.reference

@@ -0,0 +1,12 @@
+Test 1: Check that you can specify options with a dashes, not an underscores
+Test 1.1: Check option from config - server_logs_file
+1
+0
+1
+0
+1
+0
+Test 1.1: Check some option from Settings.h - allow_deprecated_syntax_for_merge_tree
+0
+Test 2: check that unicode dash processed correctly
+1

tests/queries/0_stateless/02718_cli_dashed_options_parsing.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+# shellcheck source=../shell_config.sh
+. "$CURDIR"/../shell_config.sh
+
+file_name=${CLICKHOUSE_TEST_UNIQUE_NAME}
+file_name_1=${file_name}_1
+file_name_2=${file_name}_2
+file_name_3=${file_name}_3
+
+#################
+echo "Test 1: Check that you can specify options with a dashes, not an underscores"
+
+[[ -e $file_name_1 ]] && rm $file_name_1
+[[ -e $file_name_2 ]] && rm $file_name_2
+[[ -e $file_name_3 ]] && rm $file_name_3
+
+echo "Test 1.1: Check option from config - server_logs_file"
+
+$CLICKHOUSE_LOCAL --log-level=debug --server-logs-file=$file_name_1 -q "SELECT 1;" 2> /dev/null
+ls | grep -q $file_name_1
+echo $?
+$CLICKHOUSE_LOCAL --log-level=debug --server-logs-file $file_name_2 -q "SELECT 1;" 2> /dev/null
+ls | grep -q $file_name_2
+echo $?
+$CLICKHOUSE_LOCAL --log-level=debug --server_logs_file $file_name_3 -q "SELECT 1;" 2> /dev/null
+ls | grep -q $file_name_3
+echo $?
+
+echo "Test 1.1: Check some option from Settings.h - allow_deprecated_syntax_for_merge_tree"
+
+$CLICKHOUSE_CLIENT --query="DROP TABLE IF EXISTS test";
+$CLICKHOUSE_CLIENT --allow-deprecated-syntax-for-merge-tree=1 --query="CREATE TABLE test (d Date, s String) ENGINE = MergeTree(d, s, 8192)";
+$CLICKHOUSE_CLIENT --query="DROP TABLE test";
+echo $?
+
+#################
+echo "Test 2: check that unicode dash processed correctly"
+$CLICKHOUSE_LOCAL —query "SELECT 1";
+
+rm $file_name_1
+rm $file_name_2
+rm $file_name_3