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/**
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* SQL-DK
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* Copyright © 2013 František Kučera (frantovo.cz)
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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, either version 3 of the License, or
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* (at your option) any later version.
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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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package info.globalcode.sql.dk;
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import static info.globalcode.sql.dk.Functions.readString;
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import info.globalcode.sql.dk.InfoLister.InfoType;
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import info.globalcode.sql.dk.configuration.Property;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* Converts command line arguments from String array to object.
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* Checks basic constraints (if only supported options are used and if they have correct number of
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* parameters)
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*
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* @author Ing. František Kučera (frantovo.cz)
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*/
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public class CLIParser {
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public static final String TYPE_NAME_SEPARATOR = ":";
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public CLIOptions parseOptions(String[] args, InputStream in) throws CLIParserException {
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CLIOptions options = new CLIOptions();
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List<SQLType> numberedTypes = new ArrayList<>();
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Map<String, SQLType> namedTypes = new HashMap<>();
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for (int i = 0; i < args.length; i++) {
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String arg = args[i];
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switch (arg) {
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case Tokens.TYPES:
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String typesString = fetchNext(args, ++i);
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for (String oneType : typesString.split(",")) {
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int sepatratorIndex = oneType.indexOf(TYPE_NAME_SEPARATOR);
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if (sepatratorIndex == -1) {
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numberedTypes.add(getType(oneType.toUpperCase()));
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} else {
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String namePart = oneType.substring(0, sepatratorIndex).trim();
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String typePart = oneType.substring(sepatratorIndex + TYPE_NAME_SEPARATOR.length(), oneType.length());
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namedTypes.put(namePart, getType(typePart.toUpperCase()));
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}
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}
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break;
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case Tokens.NAME_PREFIX:
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options.setNamePrefix(fetchNext(args, ++i));
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break;
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case Tokens.NAME_SUFFIX:
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options.setNameSuffix(fetchNext(args, ++i));
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break;
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case Tokens.DB:
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options.setDatabaseName(fetchNext(args, ++i));
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break;
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case Tokens.SQL:
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options.setSql(fetchNext(args, ++i));
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break;
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case Tokens.SQL_IN:
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try {
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options.setSql(readString(in));
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} catch (IOException e) {
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throw new CLIParserException("Unable to read SQL from the input stream", e);
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}
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break;
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case Tokens.BATCH:
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options.setBatch(true);
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break;
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case Tokens.DATA: // --data is the last option
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for (i++; i < args.length; i++) {
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arg = args[i];
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Parameter parameter;
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if (numberedTypes.isEmpty()) {
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parameter = new Parameter(arg, null);
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} else {
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int paramIndex = options.getNumberedParameters().size();
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SQLType paramType;
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try {
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paramType = numberedTypes.get(paramIndex);
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} catch (IndexOutOfBoundsException e) {
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throw new CLIParserException("Missing type for parameter #" + paramIndex, e);
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} catch (NullPointerException e) {
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throw new CLIParserException("Invalid type definition for parameter #" + paramIndex, e);
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}
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parameter = new Parameter(arg, paramType);
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}
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options.addNumberedParameter(parameter);
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}
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break;
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case Tokens.DATA_NAMED:
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for (i++; i < args.length; i++) {
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String paramName = args[i];
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String paramValue = fetchNext(args, ++i);
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options.addNamedParameter(new NamedParameter(paramName, paramValue, namedTypes.get(paramName)));
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}
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break;
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case Tokens.FORMATTER:
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options.setFormatterName(fetchNext(args, ++i));
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break;
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case Tokens.DB_PROPERTY:
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options.addDatabaseProperty(new Property(fetchNext(args, ++i), fetchNext(args, ++i)));
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break;
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case Tokens.FORMATTER_PROPERTY:
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options.addFormatterProperty(new Property(fetchNext(args, ++i), fetchNext(args, ++i)));
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break;
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case Tokens.INFO_HELP:
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options.addShowInfo(InfoType.HELP);
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break;
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case Tokens.INFO_FORMATTERS:
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options.addShowInfo(InfoType.FORMATTERS);
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break;
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case Tokens.INFO_FORMATTER_PROPERTIES:
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options.addShowInfo(InfoType.FORMATTER_PROPERTIES);
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options.addFormatterNameToListProperties(fetchNext(args, ++i));
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break;
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case Tokens.INFO_LICENSE:
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options.addShowInfo(InfoType.LICENSE);
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break;
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case Tokens.INFO_JAVA_PROPERTIES:
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options.addShowInfo(InfoType.JAVA_PROPERTIES);
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break;
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case Tokens.INFO_ENVIRONMENT_VARIABLES:
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options.addShowInfo(InfoType.ENVIRONMENT_VARIABLES);
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break;
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case Tokens.INFO_TYPES:
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options.addShowInfo(InfoType.TYPES);
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break;
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case Tokens.INFO_VERSION:
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options.addShowInfo(InfoType.VERSION);
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break;
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case Tokens.INFO_JDBC_DRIVERS:
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options.addShowInfo(InfoType.JDBC_DRIVERS);
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break;
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case Tokens.INFO_JDBC_PROPERTIES:
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options.addShowInfo(InfoType.JDBC_PROPERTIES);
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options.addDatabaseNameToListProperties(fetchNext(args, ++i));
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break;
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case Tokens.INFO_DATABASES:
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options.addShowInfo(InfoType.DATABASES);
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break;
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case Tokens.INFO_CONNECTION:
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options.addShowInfo(InfoType.CONNECTION);
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options.addDatabaseNameToTest(fetchNext(args, ++i));
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break;
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default:
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throw new CLIParserException("Unknown option: " + arg);
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}
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}
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return options;
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}
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private String fetchNext(String[] args, int index) throws CLIParserException {
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if (index < args.length) {
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return args[index];
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} else {
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throw new CLIParserException("Expecting value for option: " + args[index - 1]);
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}
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}
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public static class Tokens {
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// bash-completion:options:
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public static final String DB = "--db"; // bash-completion:option // help: database name
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public static final String DB_PROPERTY = "--db-property"; // bash-completion:option // help: name and value
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public static final String SQL = "--sql"; // bash-completion:option // help: SQL query/command
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public static final String SQL_IN = "--sql-in"; // bash-completion:option // help: SQL query/command
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public static final String BATCH = "--batch"; // bash-completion:option // help: batch mode (no argument)
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public static final String DATA = "--data"; // bash-completion:option // help: list of ordinal parameters
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public static final String DATA_NAMED = "--data-named"; // bash-completion:option // help: list of named parameters
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public static final String NAME_PREFIX = "--name-prefix"; // bash-completion:option // help: parameter name prefix – regular expression
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public static final String NAME_SUFFIX = "--name-suffix"; // bash-completion:option // help: parameter name suffix – regular expression
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public static final String TYPES = "--types"; // bash-completion:option // help: comma separated list of parameter types
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public static final String FORMATTER = "--formatter"; // bash-completion:option // help: name of the output formatter
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public static final String FORMATTER_PROPERTY = "--formatter-property"; // bash-completion:option // help: name and value
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public static final String INFO_HELP = "--help"; // bash-completion:option // help: print this help
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public static final String INFO_VERSION = "--version"; // bash-completion:option // help: print version info
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public static final String INFO_LICENSE = "--license"; // bash-completion:option // help: print license
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public static final String INFO_JAVA_PROPERTIES = "--list-java-properties"; // bash-completion:option // help: list of Java system properties
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public static final String INFO_ENVIRONMENT_VARIABLES = "--list-environment-variables"; // bash-completion:option // help: list of environment variables
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public static final String INFO_FORMATTERS = "--list-formatters"; // bash-completion:option // help: print list of available formatters
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public static final String INFO_FORMATTER_PROPERTIES = "--list-formatter-properties"; // bash-completion:option // help: print list of available properties for given formatter
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public static final String INFO_TYPES = "--list-types"; // bash-completion:option // help: print list of available data types
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public static final String INFO_JDBC_DRIVERS = "--list-jdbc-drivers"; // bash-completion:option // help: list of available JDBC drivers
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public static final String INFO_JDBC_PROPERTIES = "--list-jdbc-properties"; // bash-completion:option // help: list of available JDBC properties for given database
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public static final String INFO_DATABASES = "--list-databases"; // bash-completion:option // help: print list of configured databases
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public static final String INFO_CONNECTION = "--test-connection"; // bash-completion:option // help: test connection to particular database
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private Tokens() {
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}
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}
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private SQLType getType(String typeString) throws CLIParserException {
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try {
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return SQLType.valueOf(typeString.trim());
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} catch (IllegalArgumentException e) {
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throw new CLIParserException("Unsupported type: " + typeString, e);
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}
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}
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}
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