initial commit
This commit is contained in:
naofal.helal
16
.classpath
Normal file
16
.classpath
Normal file
@@ -0,0 +1,16 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
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<attributes>
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<attribute name="module" value="false" />
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</attributes>
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</classpathentry>
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<!-- Output directory -->
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<classpathentry kind="output" path="jdtls-build" />
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<!-- Soruces -->
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<classpathentry kind="src" path="src/main/java" />
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<classpathentry excluding="src/" including="nobuild/**.java|Build.java" kind="src"
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path="" />
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<!-- Libraries -->
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<classpathentry kind="lib" path="third-party/jars/h2.jar" />
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</classpath>
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13
.gitignore
vendored
Normal file
13
.gitignore
vendored
Normal file
@@ -0,0 +1,13 @@
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/build
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/package
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/out
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/bin
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/jdtls-build
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.env*
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/third-party/downloads/*
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/third-party/**/*.jar
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/*.jar
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/docs
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28
.project
Normal file
28
.project
Normal file
@@ -0,0 +1,28 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>projectname</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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<filteredResources>
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<filter>
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<id>1741727164708</id>
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<name></name>
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<type>30</type>
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<matcher>
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<id>org.eclipse.core.resources.regexFilterMatcher</id>
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<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
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</matcher>
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</filter>
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</filteredResources>
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</projectDescription>
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34
Build.java
Normal file
34
Build.java
Normal file
@@ -0,0 +1,34 @@
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import static nobuild.NoBuild.*;
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import java.nio.file.Paths;
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public class Build {
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static final String program = "jtags";
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public static void main(String[] args) {
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rebuildSelf(Build.class, args);
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String mainClass = "xyz.naofal.jtags.Jtags";
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String[] sourcePaths = glob("src/main/java/**.java");
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String[] classPaths = glob("third-party/jars/*.jar");
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if (classNeedsRebuild(mainClass, sourcePaths)) {
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ensureDependencies();
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logger.info("Compiling %s...".formatted(program));
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compileJava(classPaths, sourcePaths);
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}
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runJava(classPaths, mainClass, args);
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}
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private static void ensureDependencies() {
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Dependency[] dependencies = {
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new Dependency("com.h2database", "h2", "2.3.232"),
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};
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if (!downloadDependencies(mavenCentral, Paths.get("third-party", "jars"), dependencies)) {
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logger.severe("Could not download all dependencies");
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System.exit(1);
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}
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}
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}
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497
nobuild/NoBuild.java
Normal file
497
nobuild/NoBuild.java
Normal file
@@ -0,0 +1,497 @@
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/*
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* NoBuild system
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*
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* @version 0.1
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* @since 1.8
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*
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* MIT License
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*
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* Copyright (c) 2025 Naofal Helal
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package nobuild;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.lang.ProcessBuilder.Redirect;
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import java.net.URI;
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import java.net.URL;
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import java.nio.file.FileSystems;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.PathMatcher;
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import java.nio.file.Paths;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.Objects;
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import java.util.logging.Handler;
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import java.util.logging.Level;
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import java.util.logging.LogRecord;
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import java.util.logging.Logger;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaFileObject;
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import javax.tools.StandardJavaFileManager;
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import javax.tools.ToolProvider;
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/**
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* NoBuild system
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*
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* <h2>Quick Guide</h2>
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*
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* A simple build script:
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*
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* <pre>
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* // Build.java
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* import static nobuild.Nobuild.*;
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*
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* public class Build {
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* public static void main(String[] args) {
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* rebuildSelf(Build.class, args);
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* compileJava("Hello.java");
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* runJava("Hello");
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* }
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* }
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* </pre>
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*
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* Which can be run as follows:
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*
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* <pre>
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* $ javac -d build/ Build.java
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* $ java -cp build/ Build
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* </pre>
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*
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* Note that by using {@link NoBuild#rebuildSelf}, the build script {@code Build} will automatically
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* rebuild itself if {@code Build.java} is modified.
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*
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* @author Naofal Helal
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* @version 0.1
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* @since 1.8
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*/
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public class NoBuild {
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public static Logger logger = Logger.getLogger("logger");
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public static Handler loggingHandler = new NoBuildLogHandler();
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public static JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
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public static Path javaHome = Paths.get(System.getProperty("java.home"));
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public static String javaBin = javaHome.resolve("bin", "java").toString();
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public static String javacBin = javaHome.resolve("bin", "javac").toString();
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/** The class path used by the java executable */
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public static String javaClassPath = System.getProperty("java.class.path");
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/**
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* Path to the build script class file, or {@code null} if {@link #rebuildSelf} hasn't been
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* called.
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*
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* <p>Will be used as the default output directory for compilation.
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||||
*/
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public static String buildClassPath = null;
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/** Returns the class path of the build script */
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public static String defaultBuildClassPath(Class<?> buildClass) {
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URL buildClassUrl = buildClass.getResource(buildClass.getName() + ".class");
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return Paths.get(buildClassUrl.getPath()).getParent().toString();
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||||
}
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static {
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logger.setUseParentHandlers(false);
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logger.addHandler(loggingHandler);
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String level;
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if ((level = System.getProperty("logger.level")) != null) {
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logger.setLevel(Level.parse(level));
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}
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}
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public static class NoBuildLogHandler extends Handler {
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@Override
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public void close() {
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flush();
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}
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@Override
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public void flush() {
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System.err.flush();
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}
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@Override
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public void publish(LogRecord record) {
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if (record.getMessage() != null && !record.getMessage().isEmpty()) {
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System.err.printf("[%s] %s%n", record.getLevel().getName(), record.getMessage());
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||||
}
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if (record.getThrown() != null) {
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||||
System.err.println(indent(record.getThrown().toString(), 4));
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||||
}
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||||
}
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||||
}
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||||
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||||
/**
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* Rebuilds the build script if necessary
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*
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* @param buildClass The main class of the build script
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||||
* @param args arguments from the main method
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*/
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public static void rebuildSelf(Class<?> buildClass, String[] args) {
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rebuildSelf(buildClass, args, new String[0]);
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}
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/**
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* Rebuilds the build script if necessary
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*
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||||
* @param buildClass The main class of the build script
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* @param args Arguments from the main method
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||||
* @param additionalSources Additional sources to watch and compile
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*/
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public static void rebuildSelf(Class<?> buildClass, String[] args, String... additionalSources) {
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String buildSource = buildClass.getName() + ".java";
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buildClassPath = defaultBuildClassPath(buildClass);
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String[] sourcePaths =
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Stream.concat(Stream.of(buildSource), Arrays.stream(additionalSources))
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.toArray(String[]::new);
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||||
|
||||
if (!classNeedsRebuild(buildClass.getName(), sourcePaths)) return;
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||||
logger.info(String.format("Recompiling %s...", buildSource));
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||||
|
||||
if (!compileJava(buildClassPath, sourcePaths)) {
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logger.severe("Compilation failed");
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||||
System.exit(1);
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||||
}
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||||
|
||||
int status = runJava(buildClass.getName(), args);
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||||
System.exit(status);
|
||||
}
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||||
|
||||
/**
|
||||
* Runs a Java class
|
||||
*
|
||||
* @param mainClass The fully qualified class name, e.g. {@code com.example.MyClass$MySubClass}
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||||
* @return Exit status code
|
||||
*/
|
||||
public static int runJava(String mainClass) {
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||||
return runJava(mainClass, new String[0]);
|
||||
}
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||||
|
||||
/**
|
||||
* Runs a Java class
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||||
*
|
||||
* @param mainClass The fully qualified class name, e.g. {@code com.example.MyClass$MySubClass}
|
||||
* @param args Arguments to pass to the main method
|
||||
* @return Exit status code
|
||||
*/
|
||||
public static int runJava(String mainClass, String... args) {
|
||||
return runJava(new String[0], mainClass, args);
|
||||
}
|
||||
|
||||
/**
|
||||
* Runs a Java class
|
||||
*
|
||||
* @param additionalClassPaths Additional class paths to pass to the compiler
|
||||
* @param mainClass The fully qualified class name, e.g. {@code com.example.MyClass$MySubClass}
|
||||
* @param args Arguments to pass to the main method
|
||||
* @return Exit status code
|
||||
*/
|
||||
public static int runJava(String[] additionalClassPaths, String mainClass, String... args) {
|
||||
String pathSeparator = System.getProperty("path.separator");
|
||||
|
||||
String classPaths =
|
||||
String.join(
|
||||
pathSeparator,
|
||||
Stream.concat(Stream.of(javaClassPath), Arrays.stream(additionalClassPaths))
|
||||
.toArray(String[]::new));
|
||||
|
||||
Stream<String> commandLineStream =
|
||||
Stream.concat(
|
||||
Stream.of(javaBin.toString(), "-cp", classPaths, mainClass), Arrays.stream(args));
|
||||
|
||||
return command(commandLineStream.toArray(String[]::new));
|
||||
}
|
||||
|
||||
/**
|
||||
* Compiles java sources
|
||||
*
|
||||
* @return {@code true} if all the sources compiled successfully
|
||||
*/
|
||||
public static boolean compileJava(String... sourcePaths) {
|
||||
return compileJava(new String[0], buildClassPath, sourcePaths);
|
||||
}
|
||||
|
||||
/**
|
||||
* Compiles java sources
|
||||
*
|
||||
* @return {@code true} if all the sources compiled successfully
|
||||
*/
|
||||
public static boolean compileJava(String[] additionalClassPaths, String... sourcePaths) {
|
||||
return compileJava(additionalClassPaths, buildClassPath, sourcePaths);
|
||||
}
|
||||
|
||||
/**
|
||||
* Compiles java sources
|
||||
*
|
||||
* @return {@code true} if all the sources compiled successfully
|
||||
*/
|
||||
public static boolean compileJava(String classOutputPath, String... sourcePaths) {
|
||||
return compileJava(new String[0], classOutputPath, sourcePaths);
|
||||
}
|
||||
|
||||
/**
|
||||
* Compiles java sources
|
||||
*
|
||||
* @return {@code true} if all the sources compiled successfully
|
||||
*/
|
||||
public static boolean compileJava(
|
||||
String[] additionalClassPaths, String classOutputPath, String... sourcePaths) {
|
||||
try (StandardJavaFileManager fileManager =
|
||||
compiler.getStandardFileManager(null, null, null); ) {
|
||||
|
||||
Iterable<? extends JavaFileObject> compilationUnits =
|
||||
fileManager.getJavaFileObjects(sourcePaths);
|
||||
|
||||
List<String> compilerOptions = new ArrayList<>();
|
||||
compilerOptions.add("-d");
|
||||
compilerOptions.add(classOutputPath);
|
||||
|
||||
if (additionalClassPaths.length > 0) {
|
||||
compilerOptions.add("-cp");
|
||||
compilerOptions.add(String.join(File.pathSeparator, additionalClassPaths));
|
||||
}
|
||||
|
||||
return compiler
|
||||
.getTask(null, fileManager, null, compilerOptions, null, compilationUnits)
|
||||
.call();
|
||||
|
||||
} catch (Exception ex) {
|
||||
logger.log(Level.SEVERE, "Exception occurred while attempting to compile:", ex);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Runs a shell command
|
||||
*
|
||||
* @return Exit status code
|
||||
*/
|
||||
public static int command(String... command) {
|
||||
try {
|
||||
return commandThrows(command);
|
||||
} catch (IOException ex) {
|
||||
logger.log(Level.SEVERE, "Error running command:", ex);
|
||||
return 0xbad_cafe;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Runs a shell command. May throw an {@code IOException}
|
||||
*
|
||||
* @return Exit status code
|
||||
* @throws Exception
|
||||
*/
|
||||
public static int commandThrows(String... command) throws IOException {
|
||||
ProcessBuilder pb =
|
||||
new ProcessBuilder(command)
|
||||
.redirectOutput(Redirect.INHERIT)
|
||||
.redirectError(Redirect.INHERIT);
|
||||
Process process;
|
||||
try {
|
||||
process = pb.start();
|
||||
process.waitFor();
|
||||
return process.exitValue();
|
||||
} catch (InterruptedException ex) {
|
||||
logger.log(Level.SEVERE, "Command Interrupted");
|
||||
logger.log(Level.FINEST, "", ex.toString());
|
||||
return 0xbad_cafe;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns file paths that match a {@code globPattern}
|
||||
*
|
||||
* @see java.nio.file.FileSystem#getPathMatcher(String) getPathMatcher
|
||||
*/
|
||||
public static String[] glob(String globPattern) {
|
||||
Path cwd = Paths.get(".");
|
||||
PathMatcher pathMatcher =
|
||||
FileSystems.getDefault()
|
||||
.getPathMatcher(String.join("", "glob:", cwd.toString(), File.separator, globPattern));
|
||||
try (@SuppressWarnings("unused")
|
||||
Stream<Path> paths =
|
||||
Files.find(
|
||||
cwd, Integer.MAX_VALUE, (path, basicFileAttributes) -> pathMatcher.matches(path))) {
|
||||
return paths.map(Path::toString).toArray(String[]::new);
|
||||
} catch (IOException e) {
|
||||
return new String[0];
|
||||
}
|
||||
}
|
||||
|
||||
/** Checks if the {@code targetPath} needs to be rebuilt from {@code sourcePaths} */
|
||||
public static boolean needsRebuild(String targetPath, String... sourcePaths) {
|
||||
long targetLastModified = new File(targetPath).lastModified();
|
||||
return targetLastModified == 0
|
||||
|| Arrays.stream(sourcePaths)
|
||||
.anyMatch(sourcePath -> new File(sourcePath).lastModified() > targetLastModified);
|
||||
}
|
||||
|
||||
/** Checks if the {@code targetPath} needs to be rebuilt from {@code sourcePaths} */
|
||||
public static boolean needsRebuild(Path targetPath, Path... sourcePaths) {
|
||||
long targetLastModified = targetPath.toFile().lastModified();
|
||||
return targetLastModified == 0
|
||||
|| Arrays.stream(sourcePaths)
|
||||
.anyMatch(sourcePath -> sourcePath.toFile().lastModified() > targetLastModified);
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if the class {@code className} needs to be rebuilt from {@code sourcePaths}
|
||||
*
|
||||
* @param className The fully qualified class name
|
||||
*/
|
||||
public static boolean classNeedsRebuild(String className, String... sourcePaths) {
|
||||
return classNeedsRebuild(buildClassPath, className, sourcePaths);
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if the class {@code className} needs to be rebuilt from {@code sourcePaths}
|
||||
*
|
||||
* @param classPath Path to look for the class in
|
||||
* @param className The fully qualified class name
|
||||
*/
|
||||
public static boolean classNeedsRebuild(
|
||||
String classPath, String className, String... sourcePaths) {
|
||||
String targetClass =
|
||||
String.join(
|
||||
"", classPath, File.separator, className.replaceAll("\\.", File.separator), ".class");
|
||||
return needsRebuild(targetClass, sourcePaths);
|
||||
}
|
||||
|
||||
/** Indents lines in {@code str} with {@code n} spaces */
|
||||
public static String indent(String str, int n) {
|
||||
if (str.isEmpty()) {
|
||||
return "";
|
||||
} else {
|
||||
StringBuilder sb = new StringBuilder(n);
|
||||
for (int i = 0; i < n; i++) {
|
||||
sb.append(" ");
|
||||
}
|
||||
String spaces = sb.toString();
|
||||
return Arrays.stream(str.split("\n"))
|
||||
.map(line -> spaces + line)
|
||||
.collect(Collectors.joining("\n", "", "\n"));
|
||||
}
|
||||
}
|
||||
|
||||
/** Transfers bytes from IO streams {@code in} to {@code out} */
|
||||
public static long transferTo(InputStream in, OutputStream out) throws IOException {
|
||||
Objects.requireNonNull(out, "out");
|
||||
long transferred = 0L;
|
||||
byte[] buffer = new byte[16384];
|
||||
|
||||
int read;
|
||||
while ((read = in.read(buffer, 0, 16384)) >= 0) {
|
||||
out.write(buffer, 0, read);
|
||||
if (transferred < Long.MAX_VALUE) {
|
||||
try {
|
||||
transferred = Math.addExact(transferred, (long) read);
|
||||
} catch (ArithmeticException ex) {
|
||||
transferred = Long.MAX_VALUE;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return transferred;
|
||||
}
|
||||
|
||||
/** Downloads file from {@code url} to {@code destination} */
|
||||
public static boolean downloadArtefact(String url, Path destination) {
|
||||
try {
|
||||
InputStream urlStream = URI.create(url).toURL().openStream();
|
||||
|
||||
Files.createDirectories(destination.getParent());
|
||||
transferTo(urlStream, new FileOutputStream(destination.toFile()));
|
||||
|
||||
return true;
|
||||
} catch (IOException ex) {
|
||||
logger.log(Level.SEVERE, "Failed to download artefact", ex);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/** Downloads file from {@code url} to {@code destination} */
|
||||
public static boolean downloadArtefact(URL url, Path destination) {
|
||||
try {
|
||||
InputStream urlStream = url.openStream();
|
||||
|
||||
Files.createDirectories(destination.getParent());
|
||||
transferTo(urlStream, new FileOutputStream(destination.toFile()));
|
||||
|
||||
return true;
|
||||
} catch (IOException ex) {
|
||||
logger.log(Level.SEVERE, "Failed to download artefact", ex);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/** Describes a Java dependency */
|
||||
public static record Dependency(String group, String name, String version) {}
|
||||
|
||||
/** URL template for maven central dependencies */
|
||||
public static String mavenCentral = "https://repo1.maven.org/maven2/%1$s/%2$s/%3$s/%2$s-%3$s.jar";
|
||||
|
||||
/**
|
||||
* Downloads {@code dependencies} from {@code repository}
|
||||
*
|
||||
* @param repository URL template for a repository, template arguments are provided:
|
||||
* <ul>
|
||||
* <li>{@code %1$s}: group id, delimeted with slashes
|
||||
* <li>{@code %2$s}: artefact name
|
||||
* <li>{@code %3$s}: artefact version
|
||||
* </ul>
|
||||
* See {@link NoBuild#mavenCentral}
|
||||
* @param destination Path to download artefacts to
|
||||
* @param dependencies Dependencies to download
|
||||
* @return {@code true} if all dependencies were downloaded successfully
|
||||
*/
|
||||
public static boolean downloadDependencies(
|
||||
String repository, Path destination, Dependency... dependencies) {
|
||||
boolean success = true;
|
||||
for (Dependency dependency : dependencies) {
|
||||
Path jarPath = destination.resolve(dependency.name() + ".jar");
|
||||
String artefact =
|
||||
"%s:%s-%s".formatted(dependency.group(), dependency.name(), dependency.version());
|
||||
String url =
|
||||
repository.formatted(
|
||||
String.join("/", dependency.group().split("\\.")),
|
||||
dependency.name(),
|
||||
dependency.version());
|
||||
if (!needsRebuild(jarPath)) continue;
|
||||
logger.info("Downloading %s ...".formatted(artefact));
|
||||
if (!downloadArtefact(url, jarPath)) {
|
||||
logger.severe("Could not download " + artefact);
|
||||
success = false;
|
||||
}
|
||||
}
|
||||
return success;
|
||||
}
|
||||
}
|
||||
7
src/main/java/xyz/naofal/jtags/Jtags.java
Normal file
7
src/main/java/xyz/naofal/jtags/Jtags.java
Normal file
@@ -0,0 +1,7 @@
|
||||
package xyz.naofal.jtags;
|
||||
|
||||
public class Jtags {
|
||||
public static void main(String[] args) {
|
||||
System.out.println("Hello");
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user