Created
November 26, 2023 16:18
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Zip helper for Android
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| import java.io.File | |
| import java.io.FileInputStream | |
| import java.io.FileOutputStream | |
| import java.util.zip.ZipEntry | |
| import java.util.zip.ZipFile | |
| import java.util.zip.ZipInputStream | |
| import java.util.zip.ZipOutputStream | |
| object ZipFacade { | |
| fun zip(filesToCompress: List<String>, outputZipFilePath: String) { | |
| val buffer = ByteArray(1024) | |
| try { | |
| val fos = FileOutputStream(outputZipFilePath) | |
| val zos = ZipOutputStream(fos) | |
| filesToCompress.forEach { file -> | |
| val ze = ZipEntry(File(file).name) | |
| zos.putNextEntry(ze) | |
| val `in` = FileInputStream(file) | |
| var len: Int | |
| while (`in`.read(buffer) | |
| .also { len = it } > 0 | |
| ) { | |
| zos.write(buffer, 0, len) | |
| } | |
| `in`.close() | |
| } | |
| zos.closeEntry() | |
| zos.close() | |
| } catch (e: Exception) { | |
| e.printStackTrace() | |
| } | |
| } | |
| fun unZip( | |
| zipFilePath: String, | |
| unzipDirectoryPath: String | |
| ) { | |
| val unzipDir = File(unzipDirectoryPath) | |
| if (!unzipDir.exists()) { | |
| unzipDir.mkdir() | |
| } | |
| val zipFile = File(zipFilePath) | |
| ZipFile(zipFile).unzip(unzipDir) | |
| } | |
| private fun ZipFile.unzip( | |
| unzipDir: File | |
| ) { | |
| val enum = entries() | |
| while (enum.hasMoreElements()) { | |
| val entry = enum.nextElement() | |
| val entryName = entry.name | |
| val fis = FileInputStream(this.name) | |
| val zis = ZipInputStream(fis) | |
| while (true) { | |
| val nextEntry = zis.nextEntry ?: break | |
| if (nextEntry.name == entryName) { | |
| val fout = FileOutputStream(File(unzipDir, nextEntry.name)) | |
| var c = zis.read() | |
| while (c != -1) { | |
| fout.write(c) | |
| c = zis.read() | |
| } | |
| zis.closeEntry() | |
| fout.close() | |
| } | |
| } | |
| zis.close() | |
| } | |
| } | |
| } |
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