--- a/java/sql-dk/src/info/globalcode/sql/dk/Functions.java Mon Mar 04 17:06:42 2019 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,254 +0,0 @@
-/**
- * SQL-DK
- * Copyright © 2013 František Kučera (frantovo.cz)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-package info.globalcode.sql.dk;
-
-import info.globalcode.sql.dk.configuration.NameIdentified;
-import info.globalcode.sql.dk.configuration.PropertyDeclaration;
-import info.globalcode.sql.dk.configuration.PropertyDeclarations;
-import info.globalcode.sql.dk.formatting.Formatter;
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.io.PrintWriter;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-/**
- *
- * @author Ing. František Kučera (frantovo.cz)
- */
-public class Functions {
-
- private static final String NBSP = " ";
- private static final Pattern WHITESPACE_TO_REPLACE = Pattern.compile("\\n|\\r|\\t|" + NBSP);
-
- private Functions() {
- }
-
- public static boolean equalz(Object a, Object b) {
- return a == null ? b == null : a.equals(b);
- }
-
- /**
- *
- * @param text String to be examinated
- * @param trim whether text should be trimmed before examination
- * @return whether text is not empty and one or more characters long (after prospective trim)
- */
- public static boolean isEmpty(String text, boolean trim) {
- if (text == null) {
- return true;
- } else {
- if (trim) {
- text = text.trim();
- }
- return text.isEmpty();
- }
- }
-
- /**
- * @see #isEmpty(java.lang.String, boolean)
- */
- public static boolean isNotEmpty(String text, boolean trim) {
- return !isEmpty(text, trim);
- }
-
- public boolean isEmpty(Collection c) {
- return c == null || c.isEmpty();
- }
-
- public boolean isNotEmpty(Collection c) {
- return !isEmpty(c);
- }
-
- public boolean isEmpty(Map m) {
- return m == null || m.isEmpty();
- }
-
- public boolean isNotEmpty(Map m) {
- return !isEmpty(m);
- }
-
- /**
- * @return empty collection if given one is null | or the original one
- */
- public static <T> Collection<T> notNull(Collection<T> c) {
- if (c == null) {
- return Collections.emptyList();
- } else {
- return c;
- }
- }
-
- public static <T extends NameIdentified> T findByName(Collection<T> collection, String name) {
- for (T element : notNull(collection)) {
- if (element != null && equalz(element.getName(), name)) {
- return element;
- }
- }
-
- return null;
- }
-
- /**
- * Copy file from Java resources to file system.
- */
- public static void installResource(String resourceName, File target) throws IOException {
- try (BufferedReader reader = new BufferedReader(new InputStreamReader(Functions.class.getClassLoader().getResourceAsStream(resourceName)))) {
- try (PrintWriter writer = new PrintWriter(target)) {
- while (true) {
- String line = reader.readLine();
- if (line == null) {
- break;
- } else {
- writer.println(line);
- }
- }
- }
- }
- }
-
- public static String rpad(String s, int n) {
- if (n > 0) {
- return String.format("%1$-" + n + "s", s);
- } else {
- return s;
- }
- }
-
- public static String lpad(String s, int n) {
- if (n > 0) {
- return String.format("%1$" + n + "s", s);
- } else {
- return s;
- }
- }
-
- public static String repeat(char ch, int count) {
- char[] array = new char[count];
- Arrays.fill(array, ch);
- return new String(array);
- }
- private final static char[] HEX_ALPHABET = "0123456789abcdef".toCharArray();
-
- public static String toHex(byte[] bytes) {
- char[] hexChars = new char[bytes.length * 2];
- for (int j = 0; j < bytes.length; j++) {
- int v = bytes[j] & 0xFF;
- hexChars[j * 2] = HEX_ALPHABET[v >>> 4];
- hexChars[j * 2 + 1] = HEX_ALPHABET[v & 0x0F];
- }
- return new String(hexChars);
- }
-
- public static String readString(InputStream in) throws IOException {
- try (BufferedReader br = new BufferedReader(new InputStreamReader(in))) {
- StringBuilder result = new StringBuilder();
- for (String line = br.readLine(); line != null; line = br.readLine()) {
- result.append(line);
- result.append('\n');
- }
- return result.toString();
- }
- }
-
- /**
- * @param <P> type of the last parent
- * @param <T> type of the examined class
- * @param type examined class
- * @param lastParent the last parent type to stop at
- * @return list of types starting with <code>type</code> and ending with <code>lastParent</code>
- */
- public static <P, T extends P> List<Class<? extends P>> getClassHierarchy(Class<T> type, Class<P> lastParent) {
- List<Class<? extends P>> hierarchy = new ArrayList<>();
-
- for (Class current = type; current != null && lastParent.isAssignableFrom(current); current = current.getSuperclass()) {
- hierarchy.add(current);
- }
-
- return hierarchy;
- }
-
- public static PropertyDeclaration[] getPropertyDeclarations(Class<? extends Formatter> formatterClass) {
- PropertyDeclarations properties = formatterClass.getAnnotation(PropertyDeclarations.class);
-
- if (properties == null) {
- PropertyDeclaration p = formatterClass.getAnnotation(PropertyDeclaration.class);
- return p == null ? new PropertyDeclaration[]{} : new PropertyDeclaration[]{p};
- } else {
- return properties.value();
- }
- }
-
- /**
- * TODO: support background or styles and move to ColorfulPrintWriter
- *
- * @param out
- * @param valueString
- * @param basicColor
- * @param escapeColor
- */
- public static void printValueWithWhitespaceReplaced(ColorfulPrintWriter out, String valueString, ColorfulPrintWriter.TerminalColor basicColor, ColorfulPrintWriter.TerminalColor escapeColor) {
-
- Matcher m = WHITESPACE_TO_REPLACE.matcher(valueString);
-
- int start = 0;
-
- while (m.find(start)) {
-
- printColorOrNot(out, basicColor, valueString.substring(start, m.start()));
-
- switch (m.group()) {
- case "\n":
- out.print(escapeColor, "↲");
- break;
- case "\r":
- out.print(escapeColor, "⏎");
- break;
- case "\t":
- out.print(escapeColor, "↹");
- break;
- case NBSP:
- out.print(escapeColor, "⎵");
- break;
- default:
- throw new IllegalStateException("Unexpected whitespace token: „" + m.group() + "“");
- }
-
- start = m.end();
- }
-
- printColorOrNot(out, basicColor, valueString.substring(start, valueString.length()));
- }
-
- private static void printColorOrNot(ColorfulPrintWriter out, ColorfulPrintWriter.TerminalColor color, String text) {
- if (color == null) {
- out.print(text);
- } else {
- out.print(color, text);
- }
- }
-}