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Add a visible error message for invalid documents

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* Also enables concurrent reading, which should be safe
This commit is contained in:
Joshua Goins 2021-09-30 07:53:41 -04:00
parent b87fe7e585
commit 3fe5d9eb3a
1 changed files with 32 additions and 1 deletions
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33
SilicaViewer/Document.swift
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@ -2,6 +2,7 @@ import Cocoa
import ZIPFoundation
import CoreFoundation
import Accelerate
import CoreMedia
struct SilicaChunk {
var x: Int = 0
@ -86,6 +87,10 @@ class Document: NSDocument {
self.addWindowController(windowController)
}
override class func canConcurrentlyReadDocuments(ofType: String) -> Bool {
return ofType == "com.procreate"
}
/*
Pass in an object from the $object array, which always contains a $class key.
*/
@ -479,23 +484,49 @@ class Document: NSDocument {
}
}
struct SilicaParsingError: Error, LocalizedError {
enum Kind {
case invalid
}
let kind: Kind
let filename: URL?
public var errorDescription: String? {
switch self.kind {
case .invalid:
return filename!.lastPathComponent + " is an invalid Silica Document."
}
}
}
func throwError(_ error: SilicaParsingError.Kind) {
DispatchQueue.main.sync {
let _ = presentError(SilicaParsingError(kind: error, filename: fileURL))
}
}
override func read(from data: Data, ofType typeName: String) throws {
self.data = data
guard let archive = Archive(data: data, accessMode: Archive.AccessMode.read) else {
guard let archive = Archive(data: data, accessMode: Archive.AccessMode.read) else {
throwError(.invalid)
return
}
guard let documentEntry = archive[DocumentArchivePath] else {
throwError(.invalid)
return
}
guard let documentData = readData(archive: archive, entry: documentEntry) else {
throwError(.invalid)
return
}
var plistFormat = PropertyListSerialization.PropertyListFormat.binary
guard let propertyList = try? PropertyListSerialization.propertyList(from: documentData, options: [], format: &plistFormat) else {
throwError(.invalid)
return
}