| author | František Kučera <franta-hg@frantovo.cz> |
| Sun, 21 Aug 2022 00:16:50 +0200 | |
| branch | v_0 |
| changeset 3 | 2b57c8683ffe |
| parent 0 | e8f15f432efc |
| permissions | -rw-r--r-- |
| 0 | 1 |
/** |
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* Relational pipes |
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* Copyright © 2022 František Kučera (Frantovo.cz, GlobalCode.info) |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, version 3 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#pragma once |
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#include <vector> |
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#include <iostream> |
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#include <codecvt> |
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#include <regex> |
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#include <relpipe/common/type/typedefs.h> |
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#include <relpipe/cli/CLI.h> |
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#include <relpipe/cli/RelpipeCLIException.h> |
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#include "Configuration.h" |
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namespace relpipe {
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namespace in {
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namespace socket {
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class CLIParser {
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private: |
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std::wstring_convert<codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings. |
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relpipe::common::type::StringX readNext(const std::vector<relpipe::common::type::StringX>& arguments, int& i) {
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if (i < arguments.size()) return arguments[i++]; |
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else throw relpipe::cli::RelpipeCLIException(L"Missing CLI argument" + (i > 0 ? (L" after " + arguments[i - 1]) : L""), relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS); |
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} |
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/** |
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* TODO: use a common method |
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*/ |
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bool parseBoolean(const relpipe::common::type::StringX& value) {
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if (value == L"true") return true; |
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else if (value == L"false") return false; |
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else throw relpipe::cli::RelpipeCLIException(L"Unable to parse boolean value: " + value + L" (expecting true or false)", relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS); |
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} |
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void setIfMissing(std::vector<Configuration::SocketOption>& options, const std::string& name, const std::string& value, bool includeEmptyValues = true) {
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auto n = convertor.from_bytes(name); |
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auto v = convertor.from_bytes(value); |
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for (auto o : options) if (o.name == n) return; |
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if (value.size() || includeEmptyValues) options.push_back({n, v});
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} |
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public: |
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static const relpipe::common::type::StringX OPTION_RELATION; |
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static const relpipe::common::type::StringX OPTION_CONNECTION_STRING; |
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static const relpipe::common::type::StringX OPTION_CONNECTION_OPTION; |
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static const relpipe::writer::string_t OPTION_MESSAGE_COUNT; |
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Configuration parse(const std::vector<relpipe::common::type::StringX>& arguments) {
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Configuration c; |
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relpipe::common::type::StringX connectionString; |
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for (int i = 0; i < arguments.size();) {
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relpipe::common::type::StringX option = readNext(arguments, i); |
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if (option == OPTION_RELATION) {
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c.relation = readNext(arguments, i); |
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} else if (option == OPTION_MESSAGE_COUNT) {
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c.messageCount = std::stoull(readNext(arguments, i)); |
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} else if (option == OPTION_CONNECTION_STRING) {
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connectionString = readNext(arguments, i); |
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} else if (option == OPTION_CONNECTION_OPTION) {
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auto name = readNext(arguments, i); |
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auto value = readNext(arguments, i); |
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c.options.push_back({name, value});
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} else throw relpipe::cli::RelpipeCLIException(L"Unsupported CLI option: " + option, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS); |
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} |
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using namespace options; |
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// Parse the connection string and convert it to options: |
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if (connectionString.size()) {
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std::string connectionStringBytes = convertor.to_bytes(connectionString); |
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std::regex pattern("(tcp|udp|sctp)://(([^:]+)|\\[([0-9a-fA-F:]+(%[a-zA-Z0-9]+)?)\\]):([0-9]+)|(uds)://(.*)");
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// 1 23 4 5 6 7 8 |
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std::smatch match; |
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if (std::regex_match(connectionStringBytes, match, pattern)) {
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setIfMissing(c.options, OPTION_PROTOCOL, match[1], false); |
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setIfMissing(c.options, OPTION_PROTOCOL, match[7], false); |
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setIfMissing(c.options, OPTION_HOST, match[3], false); |
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setIfMissing(c.options, OPTION_HOST, match[4], false); |
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setIfMissing(c.options, OPTION_PORT, match[6], false); |
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setIfMissing(c.options, OPTION_PATH, match[8], false); |
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if (match[1] == PROTOCOL_TCP) setIfMissing(c.options, OPTION_MODE, MODE_STREAM); |
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} else {
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throw relpipe::cli::RelpipeCLIException(L"Invalid connection string: " + connectionString, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS); |
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} |
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} |
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// Set defaults when values are missing: |
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setIfMissing(c.options, OPTION_PROTOCOL, PROTOCOL_UDP); |
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setIfMissing(c.options, OPTION_ROLE, ROLE_SERVER); |
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setIfMissing(c.options, OPTION_MODE, MODE_DATAGRAM); |
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setIfMissing(c.options, OPTION_HOST, "127.0.0.1"); |
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setIfMissing(c.options, OPTION_PORT, "64000"); |
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return c; |
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} |
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virtual ~CLIParser() {
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} |
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}; |
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const relpipe::common::type::StringX CLIParser::OPTION_RELATION = L"--relation"; |
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const relpipe::common::type::StringX CLIParser::OPTION_CONNECTION_STRING = L"--connection-string"; |
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const relpipe::common::type::StringX CLIParser::OPTION_CONNECTION_OPTION = L"--connection-option"; |
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const relpipe::writer::string_t CLIParser::OPTION_MESSAGE_COUNT = L"--message-count"; |
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} |
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} |
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} |