1 /**

     2  * Relational pipes

     3  * Copyright © 2021 František Kučera (Frantovo.cz, GlobalCode.info)

     4  *

     5  * This program is free software: you can redistribute it and/or modify

     6  * it under the terms of the GNU General Public License as published by

     7  * the Free Software Foundation, version 3 of the License.

     8  *

     9  * This program is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

    12  * GNU General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU General Public License

    15  * along with this program. If not, see <http://www.gnu.org/licenses/>.

    16  */

    17 #pragma once

    18 

    19 #include <vector>

    20 

    21 #include <relpipe/common/type/typedefs.h>

    22 #include <relpipe/cli/CLI.h>

    23 #include <relpipe/cli/RelpipeCLIException.h>

    24 

    25 #include "Configuration.h"

    26 

    27 namespace relpipe {

    28 namespace tr {

    29 namespace cut {

    30 

    31 class CLIParser {

    32 private:

    33 

    34 	relpipe::common::type::StringX readNext(std::vector<relpipe::common::type::StringX> arguments, int& i) {

    35 		if (i < arguments.size()) return arguments[i++];

    36 		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);

    37 	}

    38 

    39 	/**

    40 	 * TODO: use a common method

    41 	 */

    42 	bool parseBoolean(const relpipe::common::type::StringX& value) {

    43 		if (value == L"true") return true;

    44 		else if (value == L"false") return false;

    45 		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);

    46 	}

    47 

    48 	RelationConfiguration::ENTITY parseEntity(const relpipe::common::type::StringX& value) {

    49 		if (value == L"relation") return RelationConfiguration::ENTITY::RELATION;

    50 		else if (value == L"attribute") return RelationConfiguration::ENTITY::ATTRIBUTE;

    51 		else throw relpipe::cli::RelpipeCLIException(L"Unable to parse entity value: " + value + L" (expecting „relation“, „attribute“ or „value“)", relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);

    52 	}

    53 

    54 	void addRelation(Configuration& c, RelationConfiguration& currentRelation) {

    55 		if (currentRelation.relation.size()) {

    56 			using E = RelationConfiguration::ENTITY;

    57 			currentRelation.relationPattern = currentRelation.caseSensitive[E::RELATION] ? std::wregex(currentRelation.relation) : std::wregex(currentRelation.relation, std::regex_constants::icase);

    58 			for (const relpipe::common::type::StringX& attribute : currentRelation.attributes) currentRelation.attributePatterns.push_back(currentRelation.caseSensitive[E::ATTRIBUTE] ? std::wregex(attribute) : std::wregex(attribute, std::regex_constants::icase));

    59 			c.relationConfigurations.push_back(currentRelation);

    60 			currentRelation = RelationConfiguration();

    61 		}

    62 	}

    63 

    64 public:

    65 

    66 	static const relpipe::common::type::StringX OPTION_RELATION;

    67 	static const relpipe::common::type::StringX OPTION_ATTRIBUTE;

    68 	static const relpipe::common::type::StringX OPTION_CASE_SENSITIVE;

    69 	static const relpipe::common::type::StringX OPTION_INVERT_MATCH;

    70 

    71 	Configuration parse(const std::vector<relpipe::common::type::StringX>& arguments) {

    72 		Configuration c;

    73 		RelationConfiguration currentRelation;

    74 

    75 		for (int i = 0; i < arguments.size();) {

    76 			relpipe::common::type::StringX option = readNext(arguments, i);

    77 

    78 			if (option == OPTION_RELATION) {

    79 				addRelation(c, currentRelation); // previous relation

    80 				currentRelation.relation = readNext(arguments, i);

    81 			} else if (option == OPTION_ATTRIBUTE) {

    82 				currentRelation.attributes.push_back(readNext(arguments, i));

    83 			} else if (option == OPTION_CASE_SENSITIVE) {

    84 				RelationConfiguration::ENTITY entity = parseEntity(readNext(arguments, i));

    85 				currentRelation.caseSensitive[entity] = parseBoolean(readNext(arguments, i));

    86 			} else if (option == OPTION_INVERT_MATCH) {

    87 				RelationConfiguration::ENTITY entity = parseEntity(readNext(arguments, i));

    88 				currentRelation.invertMatch[entity] = parseBoolean(readNext(arguments, i));

    89 			} else throw relpipe::cli::RelpipeCLIException(L"Unsupported CLI option: " + option, relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);

    90 		}

    91 		addRelation(c, currentRelation); // last relation

    92 

    93 		return c;

    94 	}

    95 

    96 	virtual ~CLIParser() {

    97 	}

    98 };

    99 

   100 const relpipe::common::type::StringX CLIParser::OPTION_RELATION = L"--relation";

   101 const relpipe::common::type::StringX CLIParser::OPTION_ATTRIBUTE = L"--attribute";

   102 const relpipe::common::type::StringX CLIParser::OPTION_CASE_SENSITIVE = L"--case-sensitive";

   103 const relpipe::common::type::StringX CLIParser::OPTION_INVERT_MATCH = L"--invert-match";

   104 

   105 }

   106 }

   107 }