strips/darwin-apk
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Consolidate update+reader & remove some dead code

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This commit is contained in:
a dinosaur
2024-11-22 21:01:01 +11:00
parent cc703ad0c5
commit be51934334
7 changed files with 108 additions and 170 deletions
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67
Sources/apk/Index/ApkIndexUpdate.swift
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@ -12,25 +12,10 @@ public struct ApkIndexUpdater {
self.repositories = []
}
public func update() {
let downloader = ApkIndexDownloader()
for repo in self.repositories {
let localIndex = URL(filePath: repo.localName)
#if false
let shouldDownload = true
#else
let shouldDownload = !FileManager.default.fileExists(atPath: localIndex.path())
#endif
if shouldDownload {
print("Fetching index for \"\(repo.name)\"")
downloader.downloadFile(remote: repo.url, destination: localIndex)
}
}
public func buildGraph() async {
let graph: ApkPackageGraph
do {
let tables = try self.repositories.map { try Self.readIndex(URL(filePath: $0.localName)) }
graph = ApkPackageGraph(index: ApkIndex.merge(tables))
graph = ApkPackageGraph(index: try await ApkIndexReader.resolve(self.repositories, fetch: .lazy))
graph.buildGraphNode()
try graph.pkgIndex.description.write(to: URL(filePath: "packages.txt"), atomically: false, encoding: .utf8)
@ -45,52 +30,4 @@ public struct ApkIndexUpdater {
for node in graph.deepIsolates { print(node, to: &out) }
}
}
public static func readIndex(_ indexURL: URL) throws -> ApkIndex {
let tarSignature: [TarReader.Entry]
let tarRecords: [TarReader.Entry]
let arcName = indexURL.lastPathComponent
let durFormat = Duration.UnitsFormatStyle(
allowedUnits: [ .seconds, .milliseconds ],
width: .condensedAbbreviated,
fractionalPart: .show(length: 3))
let gzipStart = ContinuousClock.now
var tars = [Data]()
do {
var file = try FileInputStream(indexURL)
//var file = try MemoryInputStream(buffer: try Data(contentsOf: indexURL))
var gzip = GZipReader()
tars.append(try gzip.read(inStream: file))
tars.append(try gzip.read(inStream: file))
} catch {
fatalError(error.localizedDescription)
}
print("\(arcName): Gzip time: \((ContinuousClock.now - gzipStart).formatted(durFormat))")
let untarStart = ContinuousClock.now
let signatureStream = MemoryInputStream(buffer: tars[0])
tarSignature = try TarReader.read(signatureStream)
let recordsStream = MemoryInputStream(buffer: tars[1])
tarRecords = try TarReader.read(recordsStream)
guard case .file(let signatureName, _) = tarSignature.first
else { fatalError("Missing signature") }
guard let apkIndexFile = tarRecords.firstFile(name: "APKINDEX")
else { fatalError("APKINDEX missing") }
guard let description = tarRecords.firstFile(name: "DESCRIPTION")
else { fatalError("DESCRIPTION missing") }
print("\(arcName): TAR time: \((ContinuousClock.now - untarStart).formatted(durFormat))")
let indexStart = ContinuousClock.now
defer {
print("\(arcName): Index time: \((ContinuousClock.now - indexStart).formatted(durFormat))")
}
return try ApkIndex(raw:
try ApkRawIndex(lines: MemoryInputStream(buffer: apkIndexFile).lines))
}
}