content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.activiti.application;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.List;
  import java.util.zip.ZipEntry;
  import java.util.zip.ZipInputStream;
  import org.springframework.util.StreamUtils;
  
  public class ApplicationReader {
  
      private List<ApplicationEntryDiscovery> applicationEntryDiscoveries;
  
      public ApplicationReader(List<ApplicationEntryDiscovery> applicationEntryDiscoveries) {
          this.applicationEntryDiscoveries = applicationEntryDiscoveries;
      }
  
      public ApplicationContent read(InputStream inputStream) {
          ApplicationContent application = new ApplicationContent();
          try (ZipInputStream zipInputStream = new ZipInputStream(inputStream)) {
              ZipEntry zipEntry;
              while ((zipEntry = zipInputStream.getNextEntry()) != null) {
                  ZipEntry currentEntry = zipEntry;
                  applicationEntryDiscoveries
                      .stream()
                      .filter(applicationEntryDiscovery ->
                          applicationEntryDiscovery.filter(currentEntry).test(currentEntry)
                      )
                      .findFirst()
                      .ifPresent(applicationEntryDiscovery ->
                          application.add(
                              new ApplicationEntry(
                                  applicationEntryDiscovery.getEntryType(),
                                  new FileContent(currentEntry.getName(), readBytes(zipInputStream))
                              )
                          )
                      );
              }
          } catch (IOException e) {
              throw new ApplicationLoadException("Unable to read zip file", e);
          }
          return application;
      }
  
      private byte[] readBytes(ZipInputStream zipInputStream) {
          try {
              return StreamUtils.copyToByteArray(zipInputStream);
          } catch (IOException e) {
              throw new ApplicationLoadException("Unable to read zip file", e);
          }
      }
  }
  