SabreTools.IO/SabreTools.IO.Extensions/IOExtensions.cs at main · SabreTools/SabreTools.IO · GitHub

History

1207 lines (1063 loc) · 47.1 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

862

863

864

865

866

867

868

869

870

871

872

873

874

875

876

877

878

879

880

881

882

883

884

885

886

887

888

889

890

891

892

893

894

895

896

897

898

899

900

901

902

903

904

905

906

907

908

909

910

911

912

913

914

915

916

917

918

919

920

921

922

923

924

925

926

927

928

929

930

931

932

933

934

935

936

937

938

939

940

941

942

943

944

945

946

947

948

949

950

951

952

953

954

955

956

957

958

959

960

961

962

963

964

965

966

967

968

969

970

971

972

973

974

975

976

977

978

979

980

981

982

983

984

985

986

987

988

989

990

991

992

993

994

995

996

997

998

999

1000

using System;

using System.Collections.Generic;

using System.IO;

using System.Text;

using System.Text.RegularExpressions;

using SabreTools.Collections.Extensions;

using SabreTools.Text.Compare;

namespace SabreTools.IO.Extensions

{

/// <summary>

/// Methods around path operations

/// </summary>

public static class IOExtensions

{

#region Directory

/// <summary>

/// Ensure the output directory is a proper format and can be created

/// </summary>

/// <param name="dir">Directory to check</param>

/// <param name="create">True if the directory should be created, false otherwise (default)</param>

/// <returns>Full path to the directory</returns>

public static string EnsureDirectory(this string? dir, bool create = false)

{

// If the output directory is invalid

if (string.IsNullOrEmpty(dir))

dir = PathTool.GetRuntimeDirectory();

// Get the full path for the output directory

dir = Path.GetFullPath(dir!.Trim('"'));

// If we're creating the output folder, do so

if (create && !Directory.Exists(dir))

Directory.CreateDirectory(dir);

return dir;

}

/// <summary>

/// Retrieve a list of just directories from inputs

/// </summary>

/// <param name="inputs">List of strings representing directories and files</param>

/// <param name="appendParent">True if the parent name should be included in the ParentablePath, false otherwise (default)</param>

/// <returns>List of strings representing just directories from the inputs</returns>

public static List<ParentablePath> GetDirectoriesOnly(List<string> inputs, bool appendParent = false)

{

var outputs = new List<ParentablePath>();

for (int i = 0; i < inputs.Count; i++)

{

string input = inputs[i];

// If we have a null or empty path

if (string.IsNullOrEmpty(input))

continue;

// If we have a wildcard

string pattern = "*";

if (input.Contains("*") || input.Contains("?"))

{

pattern = Path.GetFileName(input);

input = input.Substring(0, input.Length - pattern.Length);

}

// Get the parent path in case of appending

string parentPath = Path.GetFullPath(input);

if (Directory.Exists(input))

{

List<string> directories = input.GetDirectoriesOrdered(pattern);

foreach (string dir in directories)

{

outputs.Add(new ParentablePath(Path.GetFullPath(dir), appendParent ? parentPath : string.Empty));

}

return outputs;

}

/// <summary>

/// Retrieve a list of directories from a directory recursively in proper order

/// </summary>

/// <param name="dir">Directory to parse</param>

/// <param name="pattern">Optional pattern to search for directory names</param>

/// <returns>List with all new files</returns>

public static List<string> GetDirectoriesOrdered(this string dir, string pattern = "*")

=> GetDirectoriesOrderedHelper(dir, [], pattern);

/// <summary>

/// Retrieve a list of directories from a directory recursively in proper order

/// </summary>

/// <param name="dir">Directory to parse</param>

/// <param name="infiles">List representing existing files</param>

/// <param name="pattern">Optional pattern to search for directory names</param>

/// <returns>List with all new files</returns>

private static List<string> GetDirectoriesOrderedHelper(string dir, List<string> infiles, string pattern)

{

// Take care of the files in the top directory

List<string> toadd = [.. dir.SafeEnumerateDirectories(pattern, SearchOption.TopDirectoryOnly)];

toadd.Sort(new NaturalComparer());

infiles.AddRange(toadd);

// Then recurse through and add from the directories

foreach (string subDir in toadd)

{

infiles = GetDirectoriesOrderedHelper(subDir, infiles, pattern);

}

// Return the new list

return infiles;

}

/// <summary>

/// Get all empty folders within a root folder

/// </summary>

/// <param name="root">Root directory to parse</param>

/// <returns>IEumerable containing all directories that are empty, an empty enumerable if the root is empty, null otherwise</returns>

public static List<string>? ListEmpty(this string? root)

{

// Check null or empty first

if (root is null)

return null;

// Then, check if the root exists

if (!Directory.Exists(root))

return null;

// Otherwise, get the complete list

var empty = new List<string>();

foreach (var dir in SafeGetDirectories(root, "*", SearchOption.AllDirectories))

{

if (SafeGetFiles(dir).Length == 0)

empty.Add(dir);

}

return empty;

}

#endregion

#region File

/// <summary>

/// Concatenate all files in the order provided, if possible

/// </summary>

/// <param name="paths">List of paths to combine</param>

/// <param name="output">Path to the output file</param>

/// <returns>True if the files were concatenated successfully, false otherwise</returns>

public static bool Concatenate(List<string> paths, string output)

{

// If the path list is empty

if (paths.Count == 0)

return false;

// If the output filename is invalid

if (string.IsNullOrEmpty(output))

return false;

try

{

// Try to build the new output file

using var ofs = File.Open(output, FileMode.Create, FileAccess.Write, FileShare.None);

for (int i = 0; i < paths.Count; i++)

{

// Get the next file

string next = paths[i];

if (!File.Exists(next))

break;

// Copy the next input to the output

using var ifs = File.Open(next, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);

ifs.BlockCopy(ofs, blockSize: 3 * 1024 * 1024);

}

return true;

}

catch

{

// Absorb the exception right now

return false;

}

/// <summary>

/// Determines a text file's encoding by analyzing its byte order mark (BOM).

/// Defaults to ASCII when detection of the text file's endianness fails.

/// </summary>

/// <param name="filename">The text file to analyze.</param>

/// <returns>The detected encoding.</returns>

/// <link>http://stackoverflow.com/questions/3825390/effective-way-to-find-any-files-encoding</link>

public static Encoding GetEncoding(this string filename)

{

if (string.IsNullOrEmpty(filename))

return Encoding.Default;

if (!File.Exists(filename))

return Encoding.Default;

// Try to open the file

try

{

var file = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);

if (file is null)

return Encoding.Default;

// Read the BOM

var bom = new byte[4];

int read = file.Read(bom, 0, 4);

file.Dispose();

// Disable warning about UTF7 usage

#if NET5_0_OR_GREATER

#pragma warning disable SYSLIB0001

#endif

// Analyze the BOM

if (bom[0] == 0x2b && bom[1] == 0x2f && bom[2] == 0x76) return Encoding.UTF7;

if (bom[0] == 0xef && bom[1] == 0xbb && bom[2] == 0xbf) return Encoding.UTF8;

if (bom[0] == 0xff && bom[1] == 0xfe) return Encoding.Unicode; //UTF-16LE

if (bom[0] == 0xfe && bom[1] == 0xff) return Encoding.BigEndianUnicode; //UTF-16BE

if (bom[0] == 0 && bom[1] == 0 && bom[2] == 0xfe && bom[3] == 0xff) return Encoding.UTF32;

return Encoding.Default;

// Restore warning about UTF7 usage

#if NET5_0_OR_GREATER

#pragma warning restore SYSLIB0001

#endif

}

catch

{

return Encoding.Default;

}

/// <summary>

/// Retrieve a list of just files from inputs

/// </summary>

/// <param name="inputs">List of strings representing directories and files</param>

/// <param name="appendParent">True if the parent name should be be included in the ParentablePath, false otherwise (default)</param>

/// <returns>List of strings representing just files from the inputs</returns>

public static List<ParentablePath> GetFilesOnly(List<string> inputs, bool appendParent = false)

{

var outputs = new List<ParentablePath>();

for (int i = 0; i < inputs.Count; i++)

{

string input = inputs[i].Trim('"');

// If we have a null or empty path

if (string.IsNullOrEmpty(input))

continue;

// If we have a wildcard

string pattern = "*";

if (input.Contains("*") || input.Contains("?"))

{

pattern = Path.GetFileName(input);

input = input.Substring(0, input.Length - pattern.Length);

}

// Get the parent path in case of appending

string parentPath = Path.GetFullPath(input);

if (Directory.Exists(input))

{

List<string> files = input.GetFilesOrdered(pattern);

foreach (string file in files)

{

outputs.Add(new ParentablePath(Path.GetFullPath(file), appendParent ? parentPath : string.Empty));

}

else if (File.Exists(input))

{

outputs.Add(new ParentablePath(Path.GetFullPath(input), appendParent ? parentPath : string.Empty));

}

return outputs;

}

/// <summary>

/// Retrieve a list of files from a directory recursively in proper order

/// </summary>

/// <param name="dir">Directory to parse</param>

/// <param name="pattern">Optional pattern to search for directory names</param>

/// <returns>List with all new files</returns>

public static List<string> GetFilesOrdered(this string dir, string pattern = "*")

=> GetFilesOrderedHelper(dir, [], pattern);

/// <summary>

/// Retrieve a list of files from a directory recursively in proper order

/// </summary>

/// <param name="dir">Directory to parse</param>

/// <param name="infiles">List representing existing files</param>

/// <param name="pattern">Optional pattern to search for directory names</param>

/// <returns>List with all new files</returns>

private static List<string> GetFilesOrderedHelper(string dir, List<string> infiles, string pattern)

{

// Take care of the files in the top directory

List<string> toadd = [.. dir.SafeEnumerateFiles(pattern, SearchOption.TopDirectoryOnly)];

toadd.Sort(new NaturalComparer());

infiles.AddRange(toadd);

// Then recurse through and add from the directories

List<string> subDirs = [.. dir.SafeEnumerateDirectories(pattern, SearchOption.TopDirectoryOnly)];

subDirs.Sort(new NaturalComparer());

foreach (string subdir in subDirs)

{

infiles = GetFilesOrderedHelper(subdir, infiles, pattern);

}

// Return the new list

return infiles;

}

/// <summary>

/// Helper to get the filesize from a path

/// </summary>

/// <returns>Size of the file path, -1 on error</returns>

public static long GetFileSize(this string? filename)

{

// Invalid filenames are ignored

if (string.IsNullOrEmpty(filename))

return -1;

// Non-file paths are ignored

if (!File.Exists(filename))

return -1;

try

{

return new FileInfo(filename).Length;

}

catch

{

// Ignore errors

return -1;

}

/// <summary>

/// Get the extension from the path, if possible

/// </summary>

/// <param name="path">Path to get extension from</param>

/// <returns>Extension, if possible</returns>

public static string? GetNormalizedExtension(this string? path)

{

// Check null or empty first

if (string.IsNullOrEmpty(path))

return null;

// Get the extension from the path, if possible

string? ext = Path.GetExtension(path)?.ToLowerInvariant();

// Check if the extension is null or empty

if (string.IsNullOrEmpty(ext))

return null;

// Make sure that extensions are valid

ext = ext!.TrimStart('.');

return ext;

}

/// <inheritdoc cref="NormalizeFilePath(string?, bool)"/>

public static string NormalizeFilePath(this string? path)

=> path.NormalizeFilePath(fullPath: true);

/// <summary>

/// Normalize a file path

/// </summary>

/// <param name="path">Path value to normalize</param>

/// <param name="fullPath">Indicates if the full path is used</param>

/// <returns>The normalized path on success, an empty path if null, or the original path on error</returns>

/// <remarks>

/// This method performs the following steps:

/// - Remove quotes and angle brackets from the start and end

/// - Replaces invalid path characters with '_'

/// - Remove spaces before and after directory separators

/// </remarks>

public static string NormalizeFilePath(this string? path, bool fullPath)

{

try

{

// If we have an invalid path

if (string.IsNullOrEmpty(path))

return string.Empty;

// Remove quotes and angle brackets from path

path = path!.Trim('\"');

path = path!.Trim('<');

path = path!.Trim('>');

// Remove invalid path characters

foreach (char c in Path.GetInvalidPathChars())

{

path = path.Replace(c, '_');

}

// Try getting the combined path and returning that directly

string usablePath = fullPath ? Path.GetFullPath(path) : path;

var fullDirectory = Path.GetDirectoryName(usablePath)?.Trim();

string fullFile = Path.GetFileName(usablePath).Trim();

// Remove invalid filename characters

foreach (char c in Path.GetInvalidFileNameChars())

{

fullFile = fullFile.Replace(c, '_');

}

// Rebuild the path, if necessary

if (!string.IsNullOrEmpty(fullDirectory))

fullFile = Path.Combine(fullDirectory, fullFile);

// Remove spaces before and after separators

return Regex.Replace(fullFile, @"\s*([\\|/])\s*", @"$1");

}

catch { }

return path ?? string.Empty;

}

/// <summary>

/// Resolve a file path that may be absolute, relative,

/// within the runtime directory, or contained within a PATH directory.

/// </summary>

/// <param name="path">Raw value from the user's options</param>

/// <returns>The absolute path of the located files, or null on failure</returns>

public static string? ResolvePath(this string? path)

{

// Invalid paths always return null

if (string.IsNullOrEmpty(path))

return null;

// If the configured path starts with a home character

if (path!.StartsWith("~/") || path.StartsWith("~\\"))

{

string homeDirectory = PathTool.GetHomeDirectory();

path = path.Substring(2);

path = Path.Combine(homeDirectory, path);

return File.Exists(path) ? Path.GetFullPath(path) : null;

}

// Explicit location (absolute or relative path)

if (path.Contains("/") || path.Contains("\\"))

return File.Exists(path) ? Path.GetFullPath(path) : null;

// Check the runtime directory if no directory path is provided

string runtimeDir = PathTool.GetRuntimeDirectory();

if (!string.IsNullOrEmpty(runtimeDir))

{

string candidate = Path.Combine(runtimeDir, path);

if (File.Exists(candidate))

return candidate;

}

// Attempt to get the PATH variable for searching

string? pathEnv = Environment.GetEnvironmentVariable("PATH");

if (string.IsNullOrEmpty(pathEnv))

return null;

// Loop through all entries in PATH

var pathParts = pathEnv!.Split(Path.PathSeparator);

foreach (string dir in pathParts)

{

if (string.IsNullOrEmpty(dir))

continue;

string candidate = Path.Combine(dir, path);

if (File.Exists(candidate))

return candidate;

}

// All options failed

return null;

}

#endregion

#region Safe Directory Enumeration

/// <inheritdoc cref="Directory.GetDirectories(string)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static string[] SafeGetDirectories(this string path)

{

try

{

return Directory.GetDirectories(path);

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.GetDirectories(string, string)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static string[] SafeGetDirectories(this string path, string searchPattern)

{

try

{

return Directory.GetDirectories(path, searchPattern);

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.GetDirectories(string, string, SearchOption)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static string[] SafeGetDirectories(this string path, string searchPattern, SearchOption searchOption)

{

try

{

return Directory.GetDirectories(path, searchPattern, searchOption);

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.GetFiles(string)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static string[] SafeGetFiles(this string path)

{

try

{

return Directory.GetFiles(path);

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.GetFiles(string, string)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static string[] SafeGetFiles(this string path, string searchPattern)

{

try

{

return Directory.GetFiles(path, searchPattern);

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.GetFiles(string, string, SearchOption)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static string[] SafeGetFiles(this string path, string searchPattern, SearchOption searchOption)

{

try

{

return Directory.GetFiles(path, searchPattern, searchOption);

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.GetFileSystemEntries(string)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static string[] SafeGetFileSystemEntries(this string path)

{

try

{

return Directory.GetFileSystemEntries(path);

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.GetDirectories(string, string)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static string[] SafeGetFileSystemEntries(this string path, string searchPattern)

{

try

{

return Directory.GetFileSystemEntries(path, searchPattern);

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.GetDirectories(string, string, SearchOption)"/>

/// <remarks>Returns an empty enumerable on any exception</remarks>

public static IEnumerable<string> SafeGetFileSystemEntries(this string path, string searchPattern, SearchOption searchOption)

{

try

{

var enumerable = Directory.GetFileSystemEntries(path, searchPattern);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

#if NET20 || NET35

/// <inheritdoc cref="Directory.GetDirectories(string)"/>

/// <remarks>Calls <see cref="SafeGetDirectories(string)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateDirectories(this string path)

=> path.SafeGetDirectories();

/// <inheritdoc cref="Directory.GetDirectories(string, string)"/>

/// <remarks>Calls <see cref="SafeGetDirectories(string, string)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateDirectories(this string path, string searchPattern)

=> path.SafeGetDirectories(searchPattern);

/// <inheritdoc cref="Directory.GetDirectories(string, string, SearchOption)"/>

/// <remarks>Calls <see cref="SafeGetDirectories(string, string, SearchOption)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateDirectories(this string path, string searchPattern, SearchOption searchOption)

=> path.SafeGetDirectories(searchPattern, searchOption);

/// <inheritdoc cref="Directory.GetFiles(string)"/>

/// <remarks>Calls <see cref="SafeGetFiles(string)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateFiles(this string path)

=> path.SafeGetFiles();

/// <inheritdoc cref="Directory.GetFiles(string, string)"/>

/// <remarks>Calls <see cref="SafeGetFiles(string, string)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateFiles(this string path, string searchPattern)

=> path.SafeGetFiles(searchPattern);

/// <inheritdoc cref="Directory.GetFiles(string, string, SearchOption)"/>

/// <remarks>Calls <see cref="SafeGetFiles(string, string, SearchOption)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateFiles(this string path, string searchPattern, SearchOption searchOption)

=> path.SafeGetFiles(searchPattern, searchOption);

/// <inheritdoc cref="Directory.GetFileSystemEntries(string)"/>

/// <remarks>Calls <see cref="SafeGetFileSystemEntries(string)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path)

=> path.SafeGetFileSystemEntries();

/// <inheritdoc cref="Directory.GetFileSystemEntries(string, string)"/>

/// <remarks>Calls <see cref="SafeGetFileSystemEntries(string, string)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path, string searchPattern)

=> path.SafeGetFileSystemEntries(searchPattern);

/// <inheritdoc cref="Directory.GetFileSystemEntries(string, string)"/>

/// <remarks>Calls <see cref="SafeGetFileSystemEntries(string, string, SearchOption)"/> implementation</remarks>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path, string searchPattern, SearchOption searchOption)

=> path.SafeGetFileSystemEntries(searchPattern, searchOption);

#elif NET40_OR_GREATER || NETSTANDARD2_0

/// <inheritdoc cref="Directory.EnumerateDirectories(string)"/>

public static IEnumerable<string> SafeEnumerateDirectories(this string path)

{

try

{

var enumerable = Directory.EnumerateDirectories(path);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateDirectories(string, string)"/>

public static IEnumerable<string> SafeEnumerateDirectories(this string path, string searchPattern)

{

try

{

var enumerable = Directory.EnumerateDirectories(path, searchPattern);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateDirectories(string, string, SearchOption)"/>

public static IEnumerable<string> SafeEnumerateDirectories(this string path, string searchPattern, SearchOption searchOption)

{

try

{

var enumerable = Directory.EnumerateDirectories(path, searchPattern, searchOption);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFiles(string)"/>

public static IEnumerable<string> SafeEnumerateFiles(this string path)

{

try

{

var enumerable = Directory.EnumerateFiles(path);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFiles(string, string)"/>

public static IEnumerable<string> SafeEnumerateFiles(this string path, string searchPattern)

{

try

{

var enumerable = Directory.EnumerateFiles(path, searchPattern);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFiles(string, string, SearchOption)"/>

public static IEnumerable<string> SafeEnumerateFiles(this string path, string searchPattern, SearchOption searchOption)

{

try

{

var enumerable = Directory.EnumerateFiles(path, searchPattern, searchOption);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFileSystemEntries(string)"/>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path)

{

try

{

var enumerable = Directory.EnumerateFileSystemEntries(path);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFileSystemEntries(string, string)"/>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path, string searchPattern)

{

try

{

var enumerable = Directory.EnumerateFileSystemEntries(path, searchPattern);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFileSystemEntries(string, string, SearchOption)"/>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path, string searchPattern, SearchOption searchOption)

{

try

{

var enumerable = Directory.EnumerateFileSystemEntries(path, searchPattern, searchOption);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

#else

/// <inheritdoc cref="Directory.EnumerateDirectories(string)"/>

public static IEnumerable<string> SafeEnumerateDirectories(this string path)

{

try

{

string searchPattern = "*";

SearchOption searchOption = SearchOption.TopDirectoryOnly;

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateDirectories(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateDirectories(string, string)"/>

public static IEnumerable<string> SafeEnumerateDirectories(this string path, string searchPattern)

{

try

{

SearchOption searchOption = SearchOption.TopDirectoryOnly;

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateDirectories(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateDirectories(string, string, SearchOption)"/>

public static IEnumerable<string> SafeEnumerateDirectories(this string path, string searchPattern, SearchOption searchOption)

{

try

{

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateDirectories(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFiles(string)"/>

public static IEnumerable<string> SafeEnumerateFiles(this string path)

{

try

{

string searchPattern = "*";

SearchOption searchOption = SearchOption.TopDirectoryOnly;

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateFiles(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFiles(string, string)"/>

public static IEnumerable<string> SafeEnumerateFiles(this string path, string searchPattern)

{

try

{

SearchOption searchOption = SearchOption.TopDirectoryOnly;

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateFiles(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFiles(string, string, SearchOption)"/>

public static IEnumerable<string> SafeEnumerateFiles(this string path, string searchPattern, SearchOption searchOption)

{

try

{

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateFiles(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFileSystemEntries(string)"/>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path)

{

try

{

string searchPattern = "*";

SearchOption searchOption = SearchOption.TopDirectoryOnly;

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateFileSystemEntries(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFileSystemEntries(string, string)"/>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path, string searchPattern)

{

try

{

SearchOption searchOption = SearchOption.TopDirectoryOnly;

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateFileSystemEntries(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <inheritdoc cref="Directory.EnumerateFileSystemEntries(string, string, SearchOption)"/>

public static IEnumerable<string> SafeEnumerateFileSystemEntries(this string path, string searchPattern, SearchOption searchOption)

{

try

{

var enumerationOptions = FromSearchOption(searchOption);

enumerationOptions.IgnoreInaccessible = true;

var enumerable = Directory.EnumerateFileSystemEntries(path, searchPattern, enumerationOptions);

return enumerable.SafeEnumerate();

}

catch

{

return [];

}

/// <summary>Initializes a new instance of the <see cref="EnumerationOptions" /> class with the recommended default options.</summary>

/// <see href="https://github.com/dotnet/runtime/blob/main/src/libraries/System.Private.CoreLib/src/System/IO/EnumerationOptions.cs#L42"</remarks>

private static EnumerationOptions FromSearchOption(SearchOption searchOption)

{

if ((searchOption != SearchOption.TopDirectoryOnly) && (searchOption != SearchOption.AllDirectories))

throw new ArgumentOutOfRangeException(nameof(searchOption));

return searchOption == SearchOption.AllDirectories

? new EnumerationOptions { RecurseSubdirectories = true, MatchType = MatchType.Win32, AttributesToSkip = 0, IgnoreInaccessible = false }

: new EnumerationOptions { MatchType = MatchType.Win32, AttributesToSkip = 0, IgnoreInaccessible = false };

}

#endif

#endregion

#region Unix

/// <summary>

/// Floppy media sizes in bytes for the standard 5.25" and 3.5" PC formats

/// (360 KB, 720 KB, 1.2 MB, 1.44 MB, 2.88 MB). A removable SCSI disk reporting one of

/// these exact capacities is a USB floppy with media inserted; no other removable

/// storage uses these sizes, so this doubles as the floppy identity check.

/// </summary>

#if NET20

private static readonly List<long> _unixFloppyMediaSizes =

#else

private static readonly HashSet<long> _unixFloppyMediaSizes =

#endif

[

368640, // 360 KB (5.25" DD)

737280, // 720 KB (3.5" DD)

1228800, // 1.2 MB (5.25" HD)

1474560, // 1.44 MB (3.5" HD)

2949120, // 2.88 MB (3.5" ED)

];

/// <summary>

/// Enumerate Linux floppy block devices under a directory by matching the kernel

/// convention "fd" followed by one or more digits (fd0, fd1, ...). This deliberately

/// rejects the "/dev/fd" symlink (no trailing digits) and format-specific nodes such

/// as "fd0u1440" (embedded non-digit characters), which are not whole-device targets.

/// </summary>

/// <param name="devRoot">Root directory to scan (typically "/dev")</param>

/// <returns>Device paths, or an empty list when the directory is unreadable</returns>

public static List<string> EnumerateUnixFloppyBlockPaths(string? devRoot = "/dev")

{

// If the device root is invalid

if (string.IsNullOrEmpty(devRoot) || !Directory.Exists(devRoot))

return [];

// Attempt to retrieve all matching devices

string[] entries = SafeGetFiles(devRoot!, "fd*");

// Return only valid devices

var result = new List<string>();

foreach (var path in entries)

{

if (HasDeviceIndexSuffix(Path.GetFileName(path), "fd"))

result.Add(path);

}

return result;

}

/// <summary>

/// Enumerate Linux optical block devices under a directory by matching

/// the kernel convention "sr" followed by one or more digits (sr0, sr1, ...).

View remainder of file in raw view

SabreTools.IO/SabreTools.IO.Extensions/IOExtensions.cs at main · SabreTools/SabreTools.IO · GitHub

Uh oh!

Expand file tree

Breadcrumbs

IOExtensions.cs

Latest commit

History

Breadcrumbs

IOExtensions.cs

File metadata and controls