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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| // | ||
| // DebToIPA.swift | ||
| // TrollTools | ||
| // | ||
| // Created by exerhythm on 21.10.2022. | ||
| // | ||
|
|
||
| import ArArchiveKit | ||
| import Zip | ||
| import SWCompression | ||
| import UIKit | ||
|
|
||
| class DebExtractor { | ||
| private static let fm = FileManager.default | ||
| private static var tempDir: URL { fm.temporaryDirectory } | ||
|
|
||
| /// Extracts deb | ||
| static func extractDeb(_ url: URL, to extractedDir: URL, statusUpdate: (String) -> ()) throws -> URL { | ||
| statusUpdate("Reading .deb") | ||
| let reader = try ArArchiveReader(archive: Array<UInt8>(Data(contentsOf: url))) | ||
| var foundData = false | ||
| for (header, dataInts) in reader { | ||
| guard header.name.contains("data.tar") else { continue } | ||
| let dataURL = tempDir.appendingPathComponent(header.name) | ||
|
|
||
| // Write data to disk | ||
| statusUpdate("Creating data from ints") | ||
| let data = Data(dataInts) | ||
| try data.write(to: dataURL, options: .atomic) | ||
|
|
||
| statusUpdate("Decompressing data archive") | ||
| let decompressedData: Data? | ||
| switch DecompressionMethod(rawValue: header.name.components(separatedBy: ".").last ?? "") { | ||
| case .lzma: | ||
| foundData = true | ||
| statusUpdate("Decompressing LZMA data.\nThis might take a while") | ||
| decompressedData = try LZMA.decompress(data: data) | ||
| case .gz: | ||
| foundData = true | ||
| statusUpdate("Unarchiving Gzip archive.\nThis might take a while") | ||
| decompressedData = try GzipArchive.unarchive(archive:data) | ||
| case .bzip2: | ||
| foundData = true | ||
| statusUpdate("Decompressing BZip2 data.\nThis might take a while") | ||
| decompressedData = try BZip2.decompress(data:data) | ||
| case .xz: | ||
| foundData = true | ||
| statusUpdate("Unarchiving XZ archive.\nThis might take a while") | ||
| decompressedData = try XZArchive.unarchive(archive:data) | ||
| case .none: | ||
| throw ConversionError.unsupportedCompression | ||
| } | ||
|
|
||
| statusUpdate("Opening .tar") | ||
| try decompressedData!.write(to: extractedDir.appendingPathExtension("tar")) | ||
| let tarContainer = try TarContainer.open(container: decompressedData!) | ||
|
|
||
| statusUpdate("Creating files") | ||
| for entry in tarContainer { | ||
| if entry.info.type == .directory { | ||
| try fm.createDirectory(at: extractedDir.appendingPathComponent(entry.info.name), withIntermediateDirectories: true) | ||
| } else if entry.info.type == .regular { | ||
| try entry.data?.write(to: extractedDir.appendingPathComponent(entry.info.name)) | ||
| } else if entry.info.type == .symbolicLink { | ||
| try fm.createSymbolicLink(at: extractedDir.appendingPathComponent(entry.info.name), withDestinationURL: URL(fileURLWithPath: entry.info.linkName)) | ||
| } else { | ||
| throw ConversionError.unknownFiletypeInsideTar | ||
| } | ||
| print(entry.info) | ||
| } | ||
| } | ||
|
|
||
| if !foundData { | ||
| throw ConversionError.noDataFound | ||
| } | ||
| return extractedDir | ||
| } | ||
|
|
||
| static func cleanup() throws { | ||
| for url in try fm.contentsOfDirectory(at: tempDir, includingPropertiesForKeys: nil) { | ||
| try fm.removeItem(at: url) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| enum DecompressionMethod: String { | ||
| case gz, lzma, bzip2, xz | ||
| } | ||
|
|
||
| enum ConversionError: Error { | ||
| case noDataFound | ||
| case noPermission | ||
| case unknownFiletypeInsideTar | ||
| case unsupportedCompression | ||
| } |
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