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146 changes: 146 additions & 0 deletions
146
android/app/src/main/java/org/fheroes2/FileManagement.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| /*************************************************************************** | ||
| * fheroes2: https://github.com/ihhub/fheroes2 * | ||
| * Copyright (C) 2024 * | ||
| * * | ||
| * This program is free software; you can redistribute it and/or modify * | ||
| * it under the terms of the GNU General Public License as published by * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| * This program is distributed in the hope that it will be useful, * | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | ||
| * GNU General Public License for more details. * | ||
| * * | ||
| * You should have received a copy of the GNU General Public License * | ||
| * along with this program; if not, write to the * | ||
| * Free Software Foundation, Inc., * | ||
| * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * | ||
| ***************************************************************************/ | ||
|
|
||
| package org.fheroes2; | ||
|
|
||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import java.nio.file.Files; | ||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.Locale; | ||
| import java.util.function.Predicate; | ||
| import java.util.zip.ZipEntry; | ||
| import java.util.zip.ZipInputStream; | ||
| import java.util.zip.ZipOutputStream; | ||
|
|
||
| import org.apache.commons.io.IOUtils; | ||
|
|
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| final class FileManagement | ||
| { | ||
| private FileManagement() | ||
| { | ||
| throw new IllegalStateException( "Instantiation is not allowed" ); | ||
| } | ||
|
|
||
| static List<String> getFileList( final File fileDir, final List<String> allowedFileExtensions ) | ||
| { | ||
| final List<String> result = new ArrayList<>(); | ||
|
|
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| final File[] fileList = fileDir.listFiles( ( dir, name ) -> { | ||
| if ( !dir.equals( fileDir ) ) { | ||
| return false; | ||
| } | ||
|
|
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| final String lowercaseName = name.toLowerCase( Locale.ROOT ); | ||
|
|
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| for ( final String extension : allowedFileExtensions ) { | ||
| if ( lowercaseName.endsWith( extension ) ) { | ||
| return true; | ||
| } | ||
| } | ||
|
|
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| return false; | ||
| } ); | ||
|
|
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| if ( fileList != null ) { | ||
| for ( final File file : fileList ) { | ||
| if ( file.isFile() ) { | ||
| result.add( file.getName() ); | ||
| } | ||
| } | ||
|
|
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| Collections.sort( result ); | ||
| } | ||
|
|
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| return result; | ||
| } | ||
|
|
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| /** | ||
| * The directory structure will not be preserved when importing. All matching files will be imported directly into the target directory. | ||
| * | ||
| * @return true if at least one matching file was found and imported, otherwise returns false | ||
| */ | ||
| static boolean importFilesFromZip( final File fileDir, final List<String> allowedFileExtensions, final InputStream zipStream ) throws IOException | ||
| { | ||
| final Predicate<String> checkExtension = ( String name ) -> | ||
| { | ||
| final String lowercaseName = name.toLowerCase( Locale.ROOT ); | ||
|
|
||
| for ( final String extension : allowedFileExtensions ) { | ||
| if ( lowercaseName.endsWith( extension ) ) { | ||
| return true; | ||
| } | ||
| } | ||
|
|
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| return false; | ||
| }; | ||
|
|
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| boolean result = false; | ||
|
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| try ( final ZipInputStream zin = new ZipInputStream( zipStream ) ) { | ||
| Files.createDirectories( fileDir.toPath() ); | ||
|
|
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| for ( ZipEntry zEntry = zin.getNextEntry(); zEntry != null; zEntry = zin.getNextEntry() ) { | ||
| if ( zEntry.isDirectory() ) { | ||
| continue; | ||
| } | ||
|
|
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| final String zEntryFileName = new File( zEntry.getName() ).getName(); | ||
| if ( !checkExtension.test( zEntryFileName ) ) { | ||
| continue; | ||
| } | ||
|
|
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| try ( final OutputStream out = Files.newOutputStream( ( new File( fileDir, zEntryFileName ) ).toPath() ) ) { | ||
| IOUtils.copy( zin, out ); | ||
| } | ||
|
|
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| result = true; | ||
| } | ||
| } | ||
|
|
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| return result; | ||
| } | ||
|
|
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| static void exportFilesToZip( final File fileDir, final List<String> fileNames, final OutputStream zipStream ) throws IOException | ||
| { | ||
| try ( final ZipOutputStream zout = new ZipOutputStream( zipStream ) ) { | ||
| for ( final String fileName : fileNames ) { | ||
| zout.putNextEntry( new ZipEntry( fileName ) ); | ||
|
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| try ( final InputStream in = Files.newInputStream( ( new File( fileDir, fileName ) ).toPath() ) ) { | ||
| IOUtils.copy( in, zout ); | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| static void deleteFiles( final File fileDir, final List<String> fileNames ) throws IOException | ||
| { | ||
| for ( final String fileName : fileNames ) { | ||
| final File file = new File( fileDir, fileName ); | ||
|
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| Files.deleteIfExists( file.toPath() ); | ||
| } | ||
| } | ||
| } |
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