001/*
002 * Syncany, www.syncany.org
003 * Copyright (C) 2011-2016 Philipp C. Heckel <philipp.heckel@gmail.com> 
004 *
005 * This program is free software: you can redistribute it and/or modify
006 * it under the terms of the GNU General Public License as published by
007 * the Free Software Foundation, either version 3 of the License, or
008 * (at your option) any later version.
009 *
010 * This program is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013 * GNU General Public License for more details.
014 *
015 * You should have received a copy of the GNU General Public License
016 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
017 */
018package org.syncany.cli.util;
019
020import java.util.List;
021
022import org.syncany.util.StringUtil;
023
024public class CliTableUtil {
025        public static void printTable(CarriageReturnPrinter out, List<String[]> tableValues, String noRowsMessage) {
026                if (tableValues.size() > 0) {
027                        Integer[] tableColumnWidths = calculateColumnWidths(tableValues);
028                        String tableRowFormat = "%-" + StringUtil.join(tableColumnWidths, "s | %-") + "s\n";
029
030                        printTableHeader(out, tableValues.get(0), tableRowFormat, tableColumnWidths);
031
032                        if (tableValues.size() > 1) {
033                                printTableBody(out, tableValues, tableRowFormat, tableColumnWidths);
034                        }
035                        else {
036                                out.println(noRowsMessage);
037                        }
038                }
039        }
040
041        private static void printTableBody(CarriageReturnPrinter out, List<String[]> tableValues, String tableRowFormat, Integer[] tableColumnWidths) {
042                for (int i = 1; i < tableValues.size(); i++) {
043                        out.printf(tableRowFormat, (Object[]) tableValues.get(i));
044                }
045        }
046
047        private static void printTableHeader(CarriageReturnPrinter out, String[] tableHeader, String tableRowFormat, Integer[] tableColumnWidths) {
048                out.printf(tableRowFormat, (Object[]) tableHeader);
049
050                for (int i = 0; i < tableColumnWidths.length; i++) {
051                        if (i > 0) {
052                                out.print("-");
053                        }
054
055                        for (int j = 0; j < tableColumnWidths[i]; j++) {
056                                out.print("-");
057                        }
058
059                        if (i < tableColumnWidths.length - 1) {
060                                out.print("-");
061                                out.print("+");
062                        }
063                }
064
065                out.println();
066        }
067
068        private static Integer[] calculateColumnWidths(List<String[]> tableValues) {
069                Integer[] tableColumnWidths = new Integer[tableValues.get(0).length];
070
071                for (String[] tableRow : tableValues) {
072                        for (int i = 0; i < tableRow.length; i++) {
073                                if (tableColumnWidths[i] == null || (tableRow[i] != null && tableColumnWidths[i] < tableRow[i].length())) {
074                                        tableColumnWidths[i] = tableRow[i].length();
075                                }
076                        }
077                }
078
079                return tableColumnWidths;
080        }       
081}