woggioni/envelope
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project renamed envelope

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This commit is contained in:
Walter Oggioni
2021-09-25 21:08:21 +02:00
parent 9f085af24a
commit 5aea49219f
17 changed files with 39 additions and 384 deletions
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2
launcher/src/main/java/net/woggioni/executable/jar/JavaAgentLauncher.java → launcher/src/main/java/net/woggioni/envelope/JavaAgentLauncher.java
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@@ -1,4 +1,4 @@
package net.woggioni.executable.jar;
package net.woggioni.envelope;
import java.io.InputStream;
import java.lang.instrument.Instrumentation;

2
launcher/src/main/java/net/woggioni/executable/jar/Launcher.java → launcher/src/main/java/net/woggioni/envelope/Launcher.java
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@@ -1,4 +1,4 @@
package net.woggioni.executable.jar;
package net.woggioni.envelope;
import java.io.InputStream;
import java.lang.reflect.Method;

2
launcher/src/main/java/net/woggioni/executable/jar/MainClassLoader.java → launcher/src/main/java/net/woggioni/envelope/MainClassLoader.java
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@@ -1,4 +1,4 @@
package net.woggioni.executable.jar;
package net.woggioni.envelope;
import java.nio.file.Path;
import lombok.SneakyThrows;

190
launcher/src/main/java/net/woggioni/executable/jar/PathClassLoader.java
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@@ -1,190 +0,0 @@
package net.woggioni.executable.jar;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import lombok.SneakyThrows;
/**
* A classloader that loads classes from a {@link Path} instance
*/
public final class PathClassLoader extends ClassLoader {
private final Iterable<Path> paths;
static {
registerAsParallelCapable();
}
public PathClassLoader(Path ...path) {
this(Arrays.asList(path), null);
}
public PathClassLoader(Iterable<Path> paths) {
this(paths, null);
}
public PathClassLoader(Iterable<Path> paths, ClassLoader parent) {
super(parent);
this.paths = paths;
}
@Override
@SneakyThrows
protected Class<?> findClass(String name) {
String resource = name.replace('.', '/').concat(".class");
for(Path path : paths) {
Path classPath = path.resolve(resource);
if (Files.exists(classPath)) {
byte[] byteCode = Files.readAllBytes(classPath);
return defineClass(name, byteCode, 0, byteCode.length);
}
}
throw new ClassNotFoundException(name);
}
@Override
@SneakyThrows
protected URL findResource(String name) {
for(Path path : paths) {
Path resolved = path.resolve(name);
if (Files.exists(resolved)) {
return toURL(resolved);
}
}
return null;
}
@Override
protected Enumeration<URL> findResources(final String name) throws IOException {
final List<URL> resources = new ArrayList<>(1);
for(Path path : paths) {
Files.walkFileTree(path, new SimpleFileVisitor<Path>() {
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
if (!name.isEmpty()) {
this.addIfMatches(resources, file);
}
return super.visitFile(file, attrs);
}
@Override
public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
if (!name.isEmpty() || path.equals(dir)) {
this.addIfMatches(resources, dir);
}
return super.preVisitDirectory(dir, attrs);
}
void addIfMatches(List<URL> resources, Path file) throws IOException {
if (path.relativize(file).toString().equals(name)) {
resources.add(toURL(file));
}
}
});
}
return Collections.enumeration(resources);
}
private static URL toURL(Path path) throws IOException {
return new URL(null, path.toUri().toString(), PathURLStreamHandler.INSTANCE);
}
private static final class PathURLConnection extends URLConnection {
private final Path path;
PathURLConnection(URL url, Path path) {
super(url);
this.path = path;
}
@Override
public void connect() {}
@Override
public long getContentLengthLong() {
try {
return Files.size(this.path);
} catch (IOException e) {
throw new RuntimeException("could not get size of: " + this.path, e);
}
}
@Override
public InputStream getInputStream() throws IOException {
return Files.newInputStream(this.path);
}
@Override
public OutputStream getOutputStream() throws IOException {
return Files.newOutputStream(this.path);
}
@Override
@SneakyThrows
public String getContentType() {
return Files.probeContentType(this.path);
}
@Override
@SneakyThrows
public long getLastModified() {
BasicFileAttributes attributes = Files.readAttributes(this.path, BasicFileAttributes.class);
return attributes.lastModifiedTime().toMillis();
}
}
@NoArgsConstructor(access = AccessLevel.PRIVATE)
private static final class PathURLStreamHandler extends URLStreamHandler {
static final URLStreamHandler INSTANCE = new PathURLStreamHandler();
@Override
@SneakyThrows
protected URLConnection openConnection(URL url) {
List<String> stack = new ArrayList<>();
URL currentURL = url;
while(true) {
String file = currentURL.getFile();
int exclamationMark = file.lastIndexOf('!');
if(exclamationMark != -1) {
stack.add(file.substring(exclamationMark + 1));
currentURL = new URL(file.substring(0, exclamationMark));
} else {
stack.add(file);
break;
}
}
Path path;
FileSystem fs = FileSystems.getDefault();
while(true) {
String pathString = stack.remove(stack.size() - 1);
path = fs.getPath(pathString);
if(stack.isEmpty()) break;
else {
fs = FileSystems.newFileSystem(path, null);
}
}
return new PathURLConnection(url, path);
}
}
}

2
launcher/src/main/java9/module-info.java
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@@ -1,4 +1,4 @@
module net.woggioni.executable.jar {
module net.woggioni.envelope {
requires java.logging;
requires static lombok;
requires net.woggioni.xclassloader;

2
launcher/src/main/java9/net/woggioni/executable/jar/MainClassLoader.java → launcher/src/main/java9/net/woggioni/envelope/MainClassLoader.java
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@@ -1,4 +1,4 @@
package net.woggioni.executable.jar;
package net.woggioni.envelope;
import java.lang.module.Configuration;
import java.lang.module.ModuleFinder;