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/**
* Arara, the cool TeX automation tool
* Copyright (c) 2012 -- 2018, Paulo Roberto Massa Cereda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the project's author nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.github.cereda.arara.utils;
import com.github.cereda.arara.controller.LanguageController;
import com.github.cereda.arara.model.AraraException;
import com.github.cereda.arara.model.Argument;
import com.github.cereda.arara.model.Messages;
import com.github.cereda.arara.model.RuleCommand;
import com.github.cereda.arara.model.Rule;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.collections4.Predicate;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.Constructor;
import org.yaml.snakeyaml.error.MarkedYAMLException;
import org.yaml.snakeyaml.nodes.Tag;
import org.yaml.snakeyaml.representer.Representer;
/**
* Implements rule utilitary methods.
* @author Paulo Roberto Massa Cereda
* @version 4.0
* @since 4.0
*/
public class RuleUtils {
// the application messages obtained from the
// language controller
private static final LanguageController messages =
LanguageController.getInstance();
/**
* Parses the provided file, checks the identifier and returns a rule
* representation.
* @param file The rule file.
* @param identifier The directive identifier.
* @return The rule object.
* @throws AraraException Something wrong happened, to be caught in the
* higher levels.
*/
public static Rule parseRule(File file, String identifier)
throws AraraException {
Representer representer = new Representer();
representer.addClassTag(Rule.class, new Tag("!config"));
Yaml yaml = new Yaml(new Constructor(Rule.class), representer);
Rule rule = null;
try {
rule = yaml.loadAs(new FileReader(file), Rule.class);
} catch (MarkedYAMLException yamlException) {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_PARSERULE_INVALID_YAML
)
),
yamlException
);
} catch (Exception exception) {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_PARSERULE_GENERIC_ERROR
)
)
);
}
validateHeader(rule, identifier);
validateBody(rule);
return rule;
}
/**
* Validates the rule header according to the directive identifier.
* @param rule The rule object.
* @param identifier The directive identifier.
* @throws AraraException Something wrong happened, to be caught in the
* higher levels.
*/
private static void validateHeader(Rule rule, String identifier)
throws AraraException {
if (rule.getIdentifier() != null) {
if (!rule.getIdentifier().equals(identifier)) {
throw new AraraException(CommonUtils.getRuleErrorHeader().
concat(
messages.getMessage(
Messages.ERROR_VALIDATEHEADER_WRONG_IDENTIFIER,
rule.getIdentifier(),
identifier
)
)
);
}
} else {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_VALIDATEHEADER_NULL_ID
)
)
);
}
if (rule.getName() == null) {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_VALIDATEHEADER_NULL_NAME
)
)
);
}
}
/**
* Validates the rule body.
* @param rule The rule object.
* @throws AraraException Something wrong happened, to be caught in the
* higher levels.
*/
private static void validateBody(Rule rule) throws AraraException {
if (rule.getCommands() == null) {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_VALIDATEBODY_NULL_COMMANDS_LIST
)
)
);
} else {
if (CollectionUtils.exists(rule.getCommands(),
new Predicate<RuleCommand>() {
public boolean evaluate(RuleCommand command) {
return (command.getCommand() == null);
}
})) {
throw new AraraException(CommonUtils.getRuleErrorHeader().
concat(
messages.getMessage(
Messages.ERROR_VALIDATEBODY_NULL_COMMAND
)
)
);
}
}
if (rule.getArguments() == null) {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_VALIDATEBODY_ARGUMENTS_LIST
)
)
);
} else {
String[] keywords = new String[]{"file", "files", "reference"};
List<String> arguments = new ArrayList<String>();
for (Argument argument : rule.getArguments()) {
if (argument.getIdentifier() != null) {
if ((argument.getFlag() != null) ||
(argument.getDefault() != null)) {
arguments.add(argument.getIdentifier());
} else {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_VALIDATEBODY_MISSING_KEYS
)
)
);
}
} else {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_VALIDATEBODY_NULL_ARGUMENT_ID
)
)
);
}
}
for (String keyword : keywords) {
if (arguments.contains(keyword)) {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_VALIDATEBODY_ARGUMENT_ID_IS_RESERVED,
keyword
)
)
);
}
}
int expected = arguments.size();
int found = (new HashSet<String>(arguments)).size();
if (expected != found) {
throw new AraraException(
CommonUtils.getRuleErrorHeader().concat(
messages.getMessage(
Messages.ERROR_VALIDATEBODY_DUPLICATE_ARGUMENT_IDENTIFIERS
)
)
);
}
}
}
}
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