elpatron
6f28ea0b16
ZIP .daagbok files use a compact manifest and binary KDAB blobs so large photo, voice, and GPS payloads no longer inflate in a single JSON file. Co-authored-by: Cursor <cursoragent@cursor.com>
46 lines
1.3 KiB
TypeScript
46 lines
1.3 KiB
TypeScript
import { strToU8, unzipSync, zipSync } from 'fflate'
|
|
import { parseManifestJson, type BackupManifestV2 } from './manifest.js'
|
|
|
|
const ZIP_LEVEL = 6
|
|
|
|
export function buildZipArchive(files: Record<string, Uint8Array>): Uint8Array {
|
|
return zipSync(files, { level: ZIP_LEVEL })
|
|
}
|
|
|
|
export function unzipArchive(data: Uint8Array): Record<string, Uint8Array> {
|
|
try {
|
|
return unzipSync(data)
|
|
} catch {
|
|
throw new Error('BACKUP_INVALID_ARCHIVE')
|
|
}
|
|
}
|
|
|
|
export function readManifestFromArchive(
|
|
files: Record<string, Uint8Array>
|
|
): BackupManifestV2 {
|
|
const raw = files['manifest.json']
|
|
if (!raw) throw new Error('BACKUP_INVALID_FORMAT')
|
|
const text = new TextDecoder().decode(raw)
|
|
return parseManifestJson(text)
|
|
}
|
|
|
|
export function readTextFile(files: Record<string, Uint8Array>, path: string): string {
|
|
const raw = files[path]
|
|
if (!raw) throw new Error('BACKUP_MISSING_BLOB')
|
|
return new TextDecoder().decode(raw)
|
|
}
|
|
|
|
export function readBinaryFile(files: Record<string, Uint8Array>, path: string): Uint8Array {
|
|
const raw = files[path]
|
|
if (!raw) throw new Error('BACKUP_MISSING_BLOB')
|
|
return raw
|
|
}
|
|
|
|
export function utf8Bytes(text: string): Uint8Array {
|
|
return strToU8(text)
|
|
}
|
|
|
|
export function isZipArchive(bytes: Uint8Array): boolean {
|
|
return bytes.length >= 4 && bytes[0] === 0x50 && bytes[1] === 0x4b
|
|
}
|