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[FEATURE] Методы работы с Jar(JarHelper)

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Gravit 2019-04-13 09:03:55 +07:00
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commit 5178cc4b6a
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libLauncher/src/main/java/ru/gravit/utils/helper/JarHelper.java Normal file
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package ru.gravit.utils.helper;
import java.io.IOException;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.JarInputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
public class JarHelper {
@FunctionalInterface
interface ZipWalkCallback
{
void process(ZipInputStream input, ZipEntry e);
}
@FunctionalInterface
interface JarWalkCallback
{
void process(ZipInputStream input, ZipEntry e, String fullClassName, String clazz);
}
public static void zipWalk(ZipInputStream input, ZipWalkCallback callback) throws IOException
{
ZipEntry e = input.getNextEntry();
while (e != null)
{
callback.process(input, e);
e = input.getNextEntry();
}
}
public static void jarWalk(JarInputStream input, JarWalkCallback callback) throws IOException
{
zipWalk(input, (in, e) -> {
String filename = e.getName();
if(filename.endsWith(".class"))
{
String classFull = filename.replaceAll("/", ".").substring(0,
filename.length() - ".class".length());
String clazz = classFull.substring(classFull.lastIndexOf('.'));
callback.process(in,e, classFull, clazz);
}
});
}
public static Map<String, String> jarMap(JarInputStream input, boolean overwrite) throws IOException
{
Map<String, String> map = new HashMap<>();
jarMap(input, map, overwrite);
return map;
}
public static void jarMap(JarInputStream input, Map<String, String> map, boolean overwrite) throws IOException
{
jarWalk(input, (in, e, classFull, clazz) -> {
if(overwrite) map.put(clazz, classFull);
else map.putIfAbsent(clazz, classFull);
});
}
public static Map<String, String> jarMap(Path file, boolean overwrite) throws IOException
{
try(JarInputStream inputStream = new JarInputStream(IOHelper.newZipInput(file)))
{
return jarMap(inputStream,overwrite);
}
}
public static void jarMap(Path file, Map<String, String> map, boolean overwrite) throws IOException
{
try(JarInputStream inputStream = new JarInputStream(IOHelper.newZipInput(file)))
{
jarMap(inputStream, map,overwrite);
}
}
public static Map<String, String> jarMap(Class clazz, boolean overwrite) throws IOException
{
Path file = IOHelper.getCodeSource(clazz);
return jarMap(file, overwrite);
}
public static void jarMap(Class clazz, Map<String, String> map, boolean overwrite) throws IOException
{
Path file = IOHelper.getCodeSource(clazz);
jarMap(file, map, overwrite);
}
}