fabian/zeitlaeufer
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- enable running project 'quck' - run the jar in the dist directory directly

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- enable running any class directly without needing a jar in the first place
This commit is contained in:
fszimnau
2025-12-03 15:13:16 +01:00
parent 8be9cf81d7
commit dc690f3350
2 changed files with 61 additions and 25 deletions
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58
src/main/java/de/szimnau/zeitlaeufer/Main.java
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@@ -2,6 +2,7 @@ package de.szimnau.zeitlaeufer;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
@@ -45,25 +46,15 @@ public class Main {
private static SortedMap<Integer, Class<?>> getAllrelevantClasses() {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
List<String> fileNames = new ArrayList<>();
URL jarUrl = classLoader.getResource("de/szimnau/zeitlaeufer");
if (jarUrl == null) {
URL resourceUrl = classLoader.getResource("de/szimnau/zeitlaeufer");
if (resourceUrl == null) {
throw new RuntimeException("Kann ausführbare Klassen nicht eruieren, da keine Ressource \"de/szimnau/zeitlaeufer\" verfügbar.");
}
String path = jarUrl.getPath().split(":", 2)[1];
String cleanPath = path.substring(0, path.lastIndexOf('!'));
Enumeration<JarEntry> entries;
try (var jarFile = new JarFile(URLDecoder.decode(cleanPath, StandardCharsets.UTF_8))) {
entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
if (entry.isDirectory()) {
continue;
}
fileNames.add(entry.getName());
}
} catch (IOException e) {
throw new RuntimeException("Kann JAR-Datei zwecks Reflection nicht öffnen:", e);
Set<String> fileNames;
if (resourceUrl.getPath().contains(".jar")) {
fileNames = getFileNamesStreamFromJar(resourceUrl);
} else {
fileNames = getFileNamesStreamFromPackage(resourceUrl);
}
var increment = new AtomicInteger();
return Collections.unmodifiableSortedMap(new TreeMap<>(
@@ -82,6 +73,39 @@ public class Main {
}
private static Set<String> getFileNamesStreamFromJar(URL resourceUrl) {
Set<String> fileNames = new HashSet<>();
String path = resourceUrl.getPath().split(":", 2)[1];
String cleanPath = path.substring(0, path.lastIndexOf('!'));
Enumeration<JarEntry> entries;
try (var jarFile = new JarFile(URLDecoder.decode(cleanPath, StandardCharsets.UTF_8))) {
entries = jarFile.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
if (entry.isDirectory()) {
continue;
}
fileNames.add(entry.getName());
}
} catch (IOException e) {
throw new RuntimeException("Kann JAR-Datei zwecks Reflection nicht öffnen:", e);
}
return fileNames;
}
private static Set<String> getFileNamesStreamFromPackage(URL resourceUrl) {
try (InputStream stream = resourceUrl.openStream();
var br = new BufferedReader(new InputStreamReader(stream, StandardCharsets.UTF_8))) {
return br.lines()
.map(line -> "de/szimnau/zeitlaeufer." + line)
.collect(Collectors.toSet());
} catch (IOException e) {
throw new RuntimeException("ausführbare Klassen nicht eruieren, da Ressource " + resourceUrl + " nicht auslesbar.", e);
}
}
private static Class<?> getClass(String className) {
String classWithPath = className.replace("/", ".");
return getClassForName(classWithPath.substring(0, className.lastIndexOf('.')));