/// <summary>
/// Read all files under the source path into a single destination file.
/// </summary>
/// <param name="srcPath">Full path of source directory</param>
/// <param name="dstFilePath">Full path of destination file</param>
/// <param name="signingCertPath">PFX file containing </param>
/// <param name="certPassword">password securing the pfx file</param>
public static void FolderToFile(string srcPath, string dstFilePath, string signingCertPath = null, string certPassword = null) {
// list out name+hash -> [path]
// write this to a single file
// gzip that file
var tmpPath = dstFilePath+".tmp";
var filePaths = new Dictionary<string, PathList>();
var symLinks = new Dictionary<string, string>(); // link path -> target path
// find distinct files
var files = NativeIO.EnumerateFiles(new PathInfo(srcPath).FullNameUnc, (symPath, targetPath)=>{
if (IsSubpath(srcPath, targetPath))
{
symLinks.Add(symPath, targetPath);
return false;
}
return true;
}, searchOption: SearchOption.AllDirectories);
foreach (var file in files)
{
var hash = HashOf(file);
Add(hash, file, filePaths);
}
// pack everything into a temp file
if (File.Exists(tmpPath)) File.Delete(tmpPath);
using (var fs = File.OpenWrite(tmpPath))
{
// Write data files
foreach (var fileKey in filePaths.Keys)
{
var pathList = filePaths[fileKey];
var catPaths = Encoding.UTF8.GetBytes(string.Join("|", Filter(pathList.Paths, srcPath)));
// Write <MD5:16 bytes>
fs.Write(pathList.HashData, 0, 16);
// Write <length:8 bytes><paths:utf8 str>
WriteLength(catPaths.Length, fs);
fs.Write(catPaths, 0, catPaths.Length);
var info = NativeIO.ReadFileDetails(new PathInfo(pathList.Paths[0]));
// Write <length:8 bytes><data:byte array>
WriteLength((long)info.Length, fs);
using (var inf = NativeIO.OpenFileStream(info.PathInfo, FileAccess.Read)) inf.CopyTo(fs);
fs.Flush();
}
// Write symbolic links
foreach (var linkSrc in symLinks.Keys)
{
var linkTarget = symLinks[linkSrc];
var linkData = Encoding.UTF8.GetBytes(string.Join("|", Filter(new[] { linkSrc, linkTarget }, srcPath)));
// Write <zeros:16 bytes>
WriteLength(0, fs);
WriteLength(0, fs);
// Write <length:8 bytes><path pair:utf8 str>, path pair is 'src|target'
WriteLength(linkData.Length, fs);
fs.Write(linkData, 0, linkData.Length);
// Write <length:8 bytes>, always zero (there is not file content in a link)
WriteLength(0, fs);
}
fs.Flush();
}
// If cert, write to *another* temp file with the signing header in place
if ( ! string.IsNullOrWhiteSpace(signingCertPath)) {
var tmpSignPath = tmpPath + ".signed";
try
{
using (var cat = File.OpenRead(tmpPath))
{
var signingBytes = Crypto.BuildSigningHeader(cat,signingCertPath, certPassword);
cat.Seek(0, SeekOrigin.Begin);
using (var final = File.Open(tmpSignPath, FileMode.Create, FileAccess.Write)) {
final.Write(signingBytes, 0, signingBytes.Length);
cat.CopyTo(final);
final.Flush();
}
}
File.Delete(tmpPath); // wipe the old one
File.Move(tmpSignPath, tmpPath); // use the new one for compression
} catch (Exception ex) {
Console.WriteLine("Signing failed: "+ex);
throw;
}
}
// Compress the file
if (File.Exists(dstFilePath)) File.Delete(dstFilePath);
using (var compressing = new GZipStream(File.OpenWrite(dstFilePath), CompressionLevel.Optimal))
using (var cat = File.OpenRead(tmpPath))
{
cat.CopyTo(compressing, 65536);
compressing.Flush();
}
// Kill the temp file
File.Delete(tmpPath);
}
