Devan-Kerman/BetterZipFileSystem

ZipFileSystem but it doesn't unessesarily decompress/recompress files

BetterZipFileSystem

ZipFileSystem but it doesn't unessesarily decompress/recompress files

Problem

The following code is ineffecient with the default ZipFileSystem

package worstcasetests;

import java.io.BufferedReader;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.util.Map;

public class ZipFsTests {
	public static void main(String[] args) throws IOException {
		try(FileSystem src = ...; FileSystem dst = ...) {
			Path path = src.getPath("test.txt");
			String test = "hello my friends, how do you do?";
			Files.writeString(path, test, StandardCharsets.UTF_8); // compresses the string into the zip
			try(BufferedReader is = Files.newBufferedReader(path)) { // decompresses the same string
				System.out.println(is.readLine());
			}
			Files.copy(path, dst.getPath("dst.txt"), StandardCopyOption.REPLACE_EXISTING); // decompresses then recompresses the same string
		}
	}
}

BetterZipFileSystem was made to address this problem, and it does

Gradle

// should work for both groovy and kotlin DSL
repositories {
	maven {
		url = uri("https://storage.googleapis.com/devan-maven/")
	}
}

dependencies {
    implementation("net.devtech:betterZipFS:1.0.1")
}

Example Usage

package worstcasetests;

import java.io.BufferedReader;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.util.Map;

import net.devtech.betterzipfs.ZipFS;

public class ZipFsTests {
	public static void main(String[] args) throws IOException {
		try(
			// if BetterZipFileSystem is present when the FileSystemProvider service is loaded, then you can just use the normal NIO API
			FileSystem src = FileSystems.newFileSystem(Path.of("test.jar"), Map.of("create", "true")); 
			// otherwise the API can still be accessed through the ZipFS class
		 	FileSystem dst = ZipFS.newFileSystem(Path.of("test.jar"), Map.of("create", "true")) 
		) {
			Path path = src.getPath("test.txt");
			String test = "hello my friends, how do you do?";
			Files.writeString(path, test, StandardCharsets.UTF_8);
			try(BufferedReader is = Files.newBufferedReader(path)) {
				System.out.println(is.readLine());
			}
			Files.copy(path, dst.getPath("dst.txt"), StandardCopyOption.REPLACE_EXISTING);
		}
	}
}