private static async Task DeleteFileAsync(FileUpdateInfo fileUpdate, FactorioVersion versionToUpdate)
{
await Task.Run(() =>
{
var file = new FileInfo(versionToUpdate.ExpandPathVariables(fileUpdate.Path));
if (file.Exists)
{
file.Delete();
}
});
}
private static async Task UpdateFileAsync(FileUpdateInfo fileUpdate, FactorioVersion versionToUpdate, ZipArchive archive, string packageDirectory)
{
await Task.Run(() =>
{
var file = new FileInfo(versionToUpdate.ExpandPathVariables(fileUpdate.Path));
if (!file.Exists)
{
throw new CriticalUpdaterException(UpdaterErrorType.FileNotFound);
}
uint oldCrc = file.CalculateCrc();
if (oldCrc != fileUpdate.OldCrc)
{
throw new CriticalUpdaterException(UpdaterErrorType.ChecksumMismatch);
}
string entryPath = fileUpdate.Path;
if (!string.IsNullOrEmpty(packageDirectory))
{
entryPath = string.Join("/", packageDirectory, entryPath);
}
entryPath = ResolveArchivePath(entryPath);
var entry = archive.GetEntry(entryPath);
using (var output = new MemoryStream())
{
using (var input = file.OpenRead())
{
using (var patch = new MemoryStream())
{
using (var source = entry.Open())
source.CopyTo(patch);
patch.Position = 0;
var decoder = new Decoder(input, patch, output);
decoder.Run();
}
}
output.Position = 0;
using (var destination = file.Open(FileMode.Truncate, FileAccess.Write))
output.CopyTo(destination);
}
uint newCrc = file.CalculateCrc();
if (newCrc != fileUpdate.NewCrc)
{
throw new CriticalUpdaterException(UpdaterErrorType.ChecksumMismatch);
}
});
}
private static async Task AddFileAsync(FileUpdateInfo fileUpdate, FactorioVersion versionToUpdate, ZipArchive archive, string packageDirectory)
{
await Task.Run(() =>
{
var file = new FileInfo(versionToUpdate.ExpandPathVariables(fileUpdate.Path));
string entryPath = fileUpdate.Path;
if (!string.IsNullOrEmpty(packageDirectory))
{
entryPath = string.Join("/", packageDirectory, entryPath);
}
entryPath = ResolveArchivePath(entryPath);
var entry = archive.GetEntry(entryPath);
var dir = file.Directory;
if (!dir.Exists)
{
dir.Create();
}
entry.ExtractToFile(file.FullName, true);
});
}