1 /**

     2  * Relational pipes

     3  * Copyright © 2019 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, either version 3 of the License, or

     8  * (at your option) any later version.

     9  *

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

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

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

    13  * GNU General Public License for more details.

    14  *

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

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

    17  */

    18 #pragma once

    19 

    20 #include <vector>

    21 

    22 #include <relpipe/writer/typedefs.h>

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

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

    25 

    26 #include "Configuration.h"

    27 

    28 namespace relpipe {

    29 namespace tr {

    30 namespace guile {

    31 

    32 class CLIParser {

    33 private:

    34 

    35 	// TODO: move common methods/classes to relpipe-lib-cli

    36 

    37 	string_t readNext(std::vector<string_t> arguments, int& i) {

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

    39 		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);

    40 	}

    41 

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

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

    44 			c.relationConfigurations.push_back(currentRelation);

    45 			currentRelation = RelationConfiguration();

    46 		}

    47 	}

    48 

    49 	bool parseBoolean(const string_t& value, const string_t& optionName) {

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

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

    52 		else throw relpipe::cli::RelpipeCLIException(L"Unable to parse boolean value of option: " + optionName + L" (expecting true or false)", relpipe::cli::CLI::EXIT_CODE_BAD_CLI_ARGUMENTS);

    53 	}

    54 

    55 public:

    56 

    57 	static const string_t OPTION_RELATION;

    58 	static const string_t OPTION_BEFORE_RECORDS;

    59 	static const string_t OPTION_AFTER_RECORDS;

    60 	static const string_t OPTION_FOR_EACH;

    61 	static const string_t OPTION_WHERE;

    62 	static const string_t OPTION_DROP;

    63 	static const string_t OPTION_DEFINE;

    64 

    65 	Configuration parse(const std::vector<string_t>& arguments) {

    66 		Configuration c;

    67 		RelationConfiguration currentRelation;

    68 

    69 		{

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

    71 				string_t option = readNext(arguments, i);

    72 

    73 				if (option == OPTION_BEFORE_RECORDS) currentRelation.guileBeforeRecords = readNext(arguments, i);

    74 				else if (option == OPTION_AFTER_RECORDS) currentRelation.guileAfterRecords = readNext(arguments, i);

    75 				else if (option == OPTION_FOR_EACH) currentRelation.guileForEach = readNext(arguments, i);

    76 				else if (option == OPTION_WHERE) currentRelation.guileWhere = readNext(arguments, i);

    77 				else if (option == OPTION_DROP) currentRelation.drop = parseBoolean(readNext(arguments, i), option);

    78 				else if (option == OPTION_RELATION) {

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

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

    81 				} else if (option == OPTION_DEFINE) {

    82 					DefinitionRecipe definition;

    83 					definition.name = readNext(arguments, i);

    84 					definition.type = readNext(arguments, i);

    85 					definition.value = readNext(arguments, i);

    86 					currentRelation.definitions.push_back(definition);

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

    88 

    89 			}

    90 

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

    92 		}

    93 

    94 		return c;

    95 	}

    96 

    97 	virtual ~CLIParser() {

    98 	}

    99 };

   100 

   101 const string_t CLIParser::OPTION_RELATION = L"--relation";

   102 const string_t CLIParser::OPTION_BEFORE_RECORDS = L"--before-records";

   103 const string_t CLIParser::OPTION_AFTER_RECORDS = L"--after-records";

   104 const string_t CLIParser::OPTION_FOR_EACH = L"--for-each";

   105 const string_t CLIParser::OPTION_WHERE = L"--where";

   106 const string_t CLIParser::OPTION_DROP = L"--drop";

   107 const string_t CLIParser::OPTION_DEFINE = L"--define";

   108 

   109 }

   110 }

   111 }