add newFileNameMap for zipFile.extractAll

.gitignore

@@ -2,3 +2,4 @@
 target/
 *.iml
 .DS_Store
+out/

src/main/java/net/lingala/zip4j/ZipFile.java

@@ -501,6 +501,54 @@ public void extractAll(String destinationPath, UnzipParameters unzipParameters)
         new ExtractAllFilesTaskParameters(destinationPath, buildConfig()));
   }
 
+  /**
+   * Extracts all the files in the given zip file to the input destination path.
+   * If zip file does not exist or destination path is invalid then an
+   * exception is thrown.
+   * <br><br>
+   * newFileNameMap is used to rename the files in the zip file.
+   *
+   * @param destinationPath path to which the entries of the zip are to be extracted
+   * @param newFileNameMap map of old file name to new file name for the files to be extracted
+   * @throws ZipException when an issue occurs during extraction
+   */
+  public void extractAll(String destinationPath, Map<String, String> newFileNameMap) throws ZipException {
+    extractAll(destinationPath, newFileNameMap, new UnzipParameters());
+  }
+
+  /**
+   * Extracts all entries in the zip file to the destination path considering the options defined in
+   * UnzipParameters
+   * <br><br>
+   * newFileNameMap is used to rename the files in the zip file.
+   *
+   * @param destinationPath path to which the entries of the zip are to be extracted
+   * @param newFileNameMap map of old file name to new file name for the files to be extracted
+   * @param unzipParameters parameters to be considered during extraction
+   * @throws ZipException when an issue occurs during extraction
+   */
+  public void extractAll(String destinationPath, Map<String, String> newFileNameMap, UnzipParameters unzipParameters) throws ZipException {
+    if (!isStringNotNullAndNotEmpty(destinationPath)) {
+      throw new ZipException("output path is null or invalid");
+    }
+
+    if (!Zip4jUtil.createDirectoryIfNotExists(new File(destinationPath))) {
+      throw new ZipException("invalid output path");
+    }
+
+    if (zipModel == null) {
+      readZipInfo();
+    }
+
+    // Throw an exception if zipModel is still null
+    if (zipModel == null) {
+      throw new ZipException("Internal error occurred when extracting zip file");
+    }
+
+    new ExtractAllFilesTask(zipModel, password, newFileNameMap, unzipParameters, buildAsyncParameters()).execute(
+            new ExtractAllFilesTaskParameters(destinationPath, buildConfig()));
+  }
+
   /**
    * Extracts a specific file from the zip file to the destination path.
    * If destination path is invalid, then this method throws an exception.

src/main/java/net/lingala/zip4j/tasks/ExtractAllFilesTask.java

@@ -11,18 +11,28 @@
 import net.lingala.zip4j.util.UnzipUtil;
 
 import java.io.IOException;
+import java.util.Map;
 
 import static net.lingala.zip4j.headers.HeaderUtil.getTotalUncompressedSizeOfAllFileHeaders;
 
 public class ExtractAllFilesTask extends AbstractExtractFileTask<ExtractAllFilesTaskParameters> {
 
   private final char[] password;
   private SplitFileInputStream splitInputStream;
+  private final Map<String, String> newFileNameMap;
 
   public ExtractAllFilesTask(ZipModel zipModel, char[] password, UnzipParameters unzipParameters,
                              AsyncTaskParameters asyncTaskParameters) {
     super(zipModel, unzipParameters, asyncTaskParameters);
     this.password = password;
+    this.newFileNameMap = null;
+  }
+
+  public ExtractAllFilesTask(ZipModel zipModel, char[] password, Map<String, String> newFileNameMap, UnzipParameters unzipParameters,
+                             AsyncTaskParameters asyncTaskParameters) {
+    super(zipModel, unzipParameters, asyncTaskParameters);
+    this.password = password;
+    this.newFileNameMap = newFileNameMap;
   }
 
   @Override
@@ -38,7 +48,7 @@ protected void executeTask(ExtractAllFilesTaskParameters taskParameters, Progres
         splitInputStream.prepareExtractionForFileHeader(fileHeader);
 
         byte[] readBuff = new byte[taskParameters.zip4jConfig.getBufferSize()];
-        extractFile(zipInputStream, fileHeader, taskParameters.outputPath, null, progressMonitor, readBuff);
+        extractFile(zipInputStream, fileHeader, taskParameters.outputPath, newFileNameMap != null ? newFileNameMap.get(fileHeader.getFileName()) : null, progressMonitor, readBuff);
         verifyIfTaskIsCancelled();
       }
     } finally {