1.1 --- a/java/sql-dk/src/info/globalcode/sql/dk/Functions.java Mon Mar 04 17:06:42 2019 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,254 +0,0 @@
1.4 -/**
1.5 - * SQL-DK
1.6 - * Copyright © 2013 František Kučera (frantovo.cz)
1.7 - *
1.8 - * This program is free software: you can redistribute it and/or modify
1.9 - * it under the terms of the GNU General Public License as published by
1.10 - * the Free Software Foundation, either version 3 of the License, or
1.11 - * (at your option) any later version.
1.12 - *
1.13 - * This program is distributed in the hope that it will be useful,
1.14 - * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.15 - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.16 - * GNU General Public License for more details.
1.17 - *
1.18 - * You should have received a copy of the GNU General Public License
1.19 - * along with this program. If not, see <http://www.gnu.org/licenses/>.
1.20 - */
1.21 -package info.globalcode.sql.dk;
1.22 -
1.23 -import info.globalcode.sql.dk.configuration.NameIdentified;
1.24 -import info.globalcode.sql.dk.configuration.PropertyDeclaration;
1.25 -import info.globalcode.sql.dk.configuration.PropertyDeclarations;
1.26 -import info.globalcode.sql.dk.formatting.Formatter;
1.27 -import java.io.BufferedReader;
1.28 -import java.io.File;
1.29 -import java.io.IOException;
1.30 -import java.io.InputStream;
1.31 -import java.io.InputStreamReader;
1.32 -import java.io.PrintWriter;
1.33 -import java.util.ArrayList;
1.34 -import java.util.Arrays;
1.35 -import java.util.Collection;
1.36 -import java.util.Collections;
1.37 -import java.util.List;
1.38 -import java.util.Map;
1.39 -import java.util.regex.Matcher;
1.40 -import java.util.regex.Pattern;
1.41 -
1.42 -/**
1.43 - *
1.44 - * @author Ing. František Kučera (frantovo.cz)
1.45 - */
1.46 -public class Functions {
1.47 -
1.48 - private static final String NBSP = " ";
1.49 - private static final Pattern WHITESPACE_TO_REPLACE = Pattern.compile("\\n|\\r|\\t|" + NBSP);
1.50 -
1.51 - private Functions() {
1.52 - }
1.53 -
1.54 - public static boolean equalz(Object a, Object b) {
1.55 - return a == null ? b == null : a.equals(b);
1.56 - }
1.57 -
1.58 - /**
1.59 - *
1.60 - * @param text String to be examinated
1.61 - * @param trim whether text should be trimmed before examination
1.62 - * @return whether text is not empty and one or more characters long (after prospective trim)
1.63 - */
1.64 - public static boolean isEmpty(String text, boolean trim) {
1.65 - if (text == null) {
1.66 - return true;
1.67 - } else {
1.68 - if (trim) {
1.69 - text = text.trim();
1.70 - }
1.71 - return text.isEmpty();
1.72 - }
1.73 - }
1.74 -
1.75 - /**
1.76 - * @see #isEmpty(java.lang.String, boolean)
1.77 - */
1.78 - public static boolean isNotEmpty(String text, boolean trim) {
1.79 - return !isEmpty(text, trim);
1.80 - }
1.81 -
1.82 - public boolean isEmpty(Collection c) {
1.83 - return c == null || c.isEmpty();
1.84 - }
1.85 -
1.86 - public boolean isNotEmpty(Collection c) {
1.87 - return !isEmpty(c);
1.88 - }
1.89 -
1.90 - public boolean isEmpty(Map m) {
1.91 - return m == null || m.isEmpty();
1.92 - }
1.93 -
1.94 - public boolean isNotEmpty(Map m) {
1.95 - return !isEmpty(m);
1.96 - }
1.97 -
1.98 - /**
1.99 - * @return empty collection if given one is null | or the original one
1.100 - */
1.101 - public static <T> Collection<T> notNull(Collection<T> c) {
1.102 - if (c == null) {
1.103 - return Collections.emptyList();
1.104 - } else {
1.105 - return c;
1.106 - }
1.107 - }
1.108 -
1.109 - public static <T extends NameIdentified> T findByName(Collection<T> collection, String name) {
1.110 - for (T element : notNull(collection)) {
1.111 - if (element != null && equalz(element.getName(), name)) {
1.112 - return element;
1.113 - }
1.114 - }
1.115 -
1.116 - return null;
1.117 - }
1.118 -
1.119 - /**
1.120 - * Copy file from Java resources to file system.
1.121 - */
1.122 - public static void installResource(String resourceName, File target) throws IOException {
1.123 - try (BufferedReader reader = new BufferedReader(new InputStreamReader(Functions.class.getClassLoader().getResourceAsStream(resourceName)))) {
1.124 - try (PrintWriter writer = new PrintWriter(target)) {
1.125 - while (true) {
1.126 - String line = reader.readLine();
1.127 - if (line == null) {
1.128 - break;
1.129 - } else {
1.130 - writer.println(line);
1.131 - }
1.132 - }
1.133 - }
1.134 - }
1.135 - }
1.136 -
1.137 - public static String rpad(String s, int n) {
1.138 - if (n > 0) {
1.139 - return String.format("%1$-" + n + "s", s);
1.140 - } else {
1.141 - return s;
1.142 - }
1.143 - }
1.144 -
1.145 - public static String lpad(String s, int n) {
1.146 - if (n > 0) {
1.147 - return String.format("%1$" + n + "s", s);
1.148 - } else {
1.149 - return s;
1.150 - }
1.151 - }
1.152 -
1.153 - public static String repeat(char ch, int count) {
1.154 - char[] array = new char[count];
1.155 - Arrays.fill(array, ch);
1.156 - return new String(array);
1.157 - }
1.158 - private final static char[] HEX_ALPHABET = "0123456789abcdef".toCharArray();
1.159 -
1.160 - public static String toHex(byte[] bytes) {
1.161 - char[] hexChars = new char[bytes.length * 2];
1.162 - for (int j = 0; j < bytes.length; j++) {
1.163 - int v = bytes[j] & 0xFF;
1.164 - hexChars[j * 2] = HEX_ALPHABET[v >>> 4];
1.165 - hexChars[j * 2 + 1] = HEX_ALPHABET[v & 0x0F];
1.166 - }
1.167 - return new String(hexChars);
1.168 - }
1.169 -
1.170 - public static String readString(InputStream in) throws IOException {
1.171 - try (BufferedReader br = new BufferedReader(new InputStreamReader(in))) {
1.172 - StringBuilder result = new StringBuilder();
1.173 - for (String line = br.readLine(); line != null; line = br.readLine()) {
1.174 - result.append(line);
1.175 - result.append('\n');
1.176 - }
1.177 - return result.toString();
1.178 - }
1.179 - }
1.180 -
1.181 - /**
1.182 - * @param <P> type of the last parent
1.183 - * @param <T> type of the examined class
1.184 - * @param type examined class
1.185 - * @param lastParent the last parent type to stop at
1.186 - * @return list of types starting with <code>type</code> and ending with <code>lastParent</code>
1.187 - */
1.188 - public static <P, T extends P> List<Class<? extends P>> getClassHierarchy(Class<T> type, Class<P> lastParent) {
1.189 - List<Class<? extends P>> hierarchy = new ArrayList<>();
1.190 -
1.191 - for (Class current = type; current != null && lastParent.isAssignableFrom(current); current = current.getSuperclass()) {
1.192 - hierarchy.add(current);
1.193 - }
1.194 -
1.195 - return hierarchy;
1.196 - }
1.197 -
1.198 - public static PropertyDeclaration[] getPropertyDeclarations(Class<? extends Formatter> formatterClass) {
1.199 - PropertyDeclarations properties = formatterClass.getAnnotation(PropertyDeclarations.class);
1.200 -
1.201 - if (properties == null) {
1.202 - PropertyDeclaration p = formatterClass.getAnnotation(PropertyDeclaration.class);
1.203 - return p == null ? new PropertyDeclaration[]{} : new PropertyDeclaration[]{p};
1.204 - } else {
1.205 - return properties.value();
1.206 - }
1.207 - }
1.208 -
1.209 - /**
1.210 - * TODO: support background or styles and move to ColorfulPrintWriter
1.211 - *
1.212 - * @param out
1.213 - * @param valueString
1.214 - * @param basicColor
1.215 - * @param escapeColor
1.216 - */
1.217 - public static void printValueWithWhitespaceReplaced(ColorfulPrintWriter out, String valueString, ColorfulPrintWriter.TerminalColor basicColor, ColorfulPrintWriter.TerminalColor escapeColor) {
1.218 -
1.219 - Matcher m = WHITESPACE_TO_REPLACE.matcher(valueString);
1.220 -
1.221 - int start = 0;
1.222 -
1.223 - while (m.find(start)) {
1.224 -
1.225 - printColorOrNot(out, basicColor, valueString.substring(start, m.start()));
1.226 -
1.227 - switch (m.group()) {
1.228 - case "\n":
1.229 - out.print(escapeColor, "↲");
1.230 - break;
1.231 - case "\r":
1.232 - out.print(escapeColor, "⏎");
1.233 - break;
1.234 - case "\t":
1.235 - out.print(escapeColor, "↹");
1.236 - break;
1.237 - case NBSP:
1.238 - out.print(escapeColor, "⎵");
1.239 - break;
1.240 - default:
1.241 - throw new IllegalStateException("Unexpected whitespace token: „" + m.group() + "“");
1.242 - }
1.243 -
1.244 - start = m.end();
1.245 - }
1.246 -
1.247 - printColorOrNot(out, basicColor, valueString.substring(start, valueString.length()));
1.248 - }
1.249 -
1.250 - private static void printColorOrNot(ColorfulPrintWriter out, ColorfulPrintWriter.TerminalColor color, String text) {
1.251 - if (color == null) {
1.252 - out.print(text);
1.253 - } else {
1.254 - out.print(color, text);
1.255 - }
1.256 - }
1.257 -}