internal ZipArchive(Stream stream, IPlatformOptions options, OpenFlags flags = OpenFlags.RDOnly)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
Options = options;
Native.zip_error_t errorp;
var streamHandle = GCHandle.Alloc(stream, GCHandleType.Normal);
IntPtr h = GCHandle.ToIntPtr(streamHandle);
IntPtr source = Native.zip_source_function_create(callback, h, out errorp);
archive = Native.zip_open_from_source(source, flags, out errorp);
if (archive == IntPtr.Zero)
{
// error;
string message = null;
var error = (ErrorCode)errorp.zip_err;
switch (error)
{
case ErrorCode.Exists:
message = $"The file already exists";
break;
case ErrorCode.Incons:
message = $"The stream failed consistency checks";
break;
case ErrorCode.Memory:
message = "libzip returned out of memory error";
break;
case ErrorCode.NoEnt:
message = $"Stream does not exist and file creation wasn't requested";
break;
case ErrorCode.NoZip:
message = $"Stream is not a ZIP archive";
break;
case ErrorCode.Open:
message = $"Stream could not be opened";
break;
case ErrorCode.Read:
message = $"Error occured while reading the Stream";
break;
case ErrorCode.Seek:
message = $"Stream does not support seeking";
break;
case ErrorCode.OK:
break;
default:
message = $"Unexpected libzip error: {error}";
break;
}
if (!String.IsNullOrEmpty(message))
{
throw new ZipIOException(message, error, Utilities.Errno);
}
}
}
/// <summary>
/// Open ZIP archive at <paramref name="path"/> using <see cref="FileMode"/> specified in the
/// <paramref name="mode"/> parameter. If <paramref name="strictConsistencyChecks"/> is <c>true</c>
/// some extra checks will be performed on the ZIP being opened. If <paramref name="defaultExtractionDir"/> is
/// not <c>null</c> or empty it is used by default by all the entries as the destination directory. Otherwise the
/// current directory is used as the destination. Output directory can be different for each entry, see <see cref="ZipEntry.Extract"/>
/// </summary>
/// <param name="path">Path to the ZIP archive.</param>
/// <param name="mode">File open mode.</param>
/// <param name="defaultExtractionDir">default target directory</param>
/// <param name="strictConsistencyChecks">Perform strict consistency checks.</param>
/// <returns>Opened ZIP archive</returns>
public static ZipArchive Open(string path, FileMode mode, string defaultExtractionDir = null, bool strictConsistencyChecks = false, IPlatformOptions options = null)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentException("Must not be null or empty", nameof(path));
}
var zip = CreateArchiveInstance(defaultExtractionDir, options);
OpenFlags flags = OpenFlags.None;
switch (mode)
{
case FileMode.Append:
case FileMode.Open:
break;
case FileMode.Create:
flags = OpenFlags.Create;
break;
case FileMode.CreateNew:
flags = OpenFlags.Create | OpenFlags.Excl;
break;
case FileMode.OpenOrCreate:
flags = OpenFlags.Create;
break;
case FileMode.Truncate:
flags = OpenFlags.Truncate;
break;
}
if (strictConsistencyChecks)
{
flags |= OpenFlags.CheckCons;
}
ErrorCode error = zip.Open(path, flags);
string message = null;
switch (error)
{
case ErrorCode.Exists:
message = $"The file {path} already exists";
break;
case ErrorCode.Incons:
message = $"The file {path} failed consistency checks";
break;
case ErrorCode.Memory:
message = "libzip returned out of memory error";
break;
case ErrorCode.NoEnt:
message = $"File {path} does not exist and file creation wasn't requested";
break;
case ErrorCode.NoZip:
message = $"File {path} is not a ZIP archive";
break;
case ErrorCode.Open:
message = $"File {path} could not be opened";
break;
case ErrorCode.Read:
message = $"Error occured while reading {path}";
break;
case ErrorCode.Seek:
message = $"File {path} does not support seeking";
break;
case ErrorCode.OK:
break;
default:
message = $"Unexpected libzip error: {error}";
break;
}
if (!String.IsNullOrEmpty(message))
{
throw new ZipIOException(message, error, Utilities.Errno);
}
return(zip);
}
public static void Init(SynchronizationContext uiContext, IPlatformOptions options)
{
ThreadHelper.Init(uiContext);
PlatformOptions = options;
}
/// <summary>
/// Create a new archive using the Stream provided. The steam should be an empty stream, any existing data will be overwritten.
/// </summary>
/// <param name="stream">The stream to create the arhive in</param>
/// <param name="options">Platform-specific options</param>
public static ZipArchive Create(Stream stream, IPlatformOptions options = null)
{
return(ZipArchive.CreateInstanceFromStream(stream, OpenFlags.Create | OpenFlags.Truncate, options));
}
public static void Init(IPlatformOptions options)
{
Init(SynchronizationContext.Current, options);
}
