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Wrap maxWindowBits with Gzip (#52)

This commit is contained in:
1024jp 2022-07-19 13:18:42 +09:00
parent 241bb44bed
commit df506dc7f2
2 changed files with 9 additions and 5 deletions
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12
Sources/Gzip/Data+Gzip.swift
View File

@ -34,8 +34,12 @@ import struct Foundation.Data
import zlib
#endif
/// Maximum value for windowBits (`MAX_WBITS`)
public let maxWindowBits = MAX_WBITS
public enum Gzip {
/// Maximum value for windowBits (`MAX_WBITS`)
public static let maxWindowBits = MAX_WBITS
}
/// Compression level whose rawValue is based on the zlib's constants.
public struct CompressionLevel: RawRepresentable {
@ -162,7 +166,7 @@ extension Data {
/// - Parameter wBits: Manage the size of the history buffer.
/// - Returns: Gzip-compressed `Data` instance.
/// - Throws: `GzipError`
public func gzipped(level: CompressionLevel = .defaultCompression, wBits: Int32 = MAX_WBITS + 16) throws -> Data {
public func gzipped(level: CompressionLevel = .defaultCompression, wBits: Int32 = Gzip.maxWindowBits + 16) throws -> Data {
guard !self.isEmpty else {
return Data()
@ -233,7 +237,7 @@ extension Data {
/// - Parameter wBits: Manage the size of the history buffer.
/// - Returns: Gzip-decompressed `Data` instance.
/// - Throws: `GzipError`
public func gunzipped(wBits: Int32 = MAX_WBITS + 32) throws -> Data {
public func gunzipped(wBits: Int32 = Gzip.maxWindowBits + 32) throws -> Data {
guard !self.isEmpty else {
return Data()

2
Tests/GzipTests/GzipTests.swift
View File

@ -109,7 +109,7 @@ final class GzipTests: XCTestCase {
dHIPIYjvjjbRUSTKjmZHs6N/6WhVStS01VnRrGhW9BeKXsML
"""
let data = try XCTUnwrap(Data(base64Encoded: encoded))
let uncompressed = try data.gunzipped(wBits: -maxWindowBits)
let uncompressed = try data.gunzipped(wBits: -Gzip.maxWindowBits)
let json = String(data: uncompressed, encoding: .utf8)
XCTAssertEqual(json?.first, "{")