Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

arc

package

Go to main page

Versions in this module

v1

v1.6.2

Apr 27, 2026

v1.6.1

Apr 1, 2026

Changes in this version

type Arc

+ func ReadArcBytes(data []byte) (*Arc, error)

+ func ReadArcFile(path string) (*Arc, error)

v1.6.0

Mar 3, 2026

v1.5.0

Jan 8, 2026

Changes in this version

type Arc

+ func NewArc(name string) *Arc

type Dir

+ Arc *Arc

type File

+ Arc *Arc

v1.4.0

Dec 29, 2025

Changes in this version

+ func DeleteFileByPath(parent *Dir, path string) bool

+ func Detect(path string) (bool, error)

+ func NameHashUTF16(name string) uint64

+ func NameHashUTF8(name string) uint64

+ func Pack(dirPath string, arcPath string) error

+ func UniqueIDHash(fullName string) uint64

+ func UnpackArc(arcPath, outDir string) error

+ type Arc struct

+ CompressGlobs []string

+ KeepDupes bool

+ Name string

+ Root *Dir

+ func New(name string) *Arc

+ func ReadArc(path string) (*Arc, error)

+ func (fs *Arc) CopyFile(srcPath, dstPath string) error

+ func (fs *Arc) CreateFile(path string, data []byte) *File

+ func (fs *Arc) DeleteFile(path string) bool

+ func (fs *Arc) Dump(path string) error

+ func (fs *Arc) GetFile(path string) *File

+ func (fs *Arc) GetFileList() []string

+ func (fs *Arc) MergeFrom(src *Arc, keepDupes bool)

+ func (fs *Arc) Unpack(outDir string) error

+ type ArcPointer struct

+ func NewArcPointer(path string, offset int64) *ArcPointer

+ func (a *ArcPointer) Compressed() bool

+ func (a *ArcPointer) Data() ([]byte, error)

+ func (a *ArcPointer) RawSize() uint32

+ func (a *ArcPointer) Size() uint32

+ type Dir struct

+ Dirs map[string]*Dir

+ Files map[string]*File

+ Name string

+ Parent *Dir

+ func AllDirs(fs *Arc) []*Dir

+ func GetOrCreateDirByPath(parent *Dir, path string) *Dir

+ func (d *Dir) AddFile(f *File)

+ func (d *Dir) Depth() int

+ func (d *Dir) FullName() string

+ func (d *Dir) GetOrCreateDir(name string) *Dir

+ func (d *Dir) UTF16Hash() uint64

+ func (d *Dir) UTF8Hash() uint64

+ func (d *Dir) UniqueID() uint64

+ type File struct

+ Name string

+ Parent *Dir

+ Ptr FilePointer

+ func AddFileByPath(parent *Dir, path string) *File

+ func AllFiles(fs *Arc) []*File

+ func FindFileByPath(parent *Dir, path string) *File

+ func (f *File) Extract(outPath string) error

+ func (f *File) FullName() string

+ func (f *File) RelativePath() string

+ func (f *File) SetData(b []byte, compressed bool)

+ func (f *File) UTF16Hash() uint64

+ func (f *File) UTF8Hash() uint64

+ func (f *File) UniqueID() uint64

+ type FilePointer interface

+ Compressed func() bool

+ Data func() ([]byte, error)

+ RawSize func() uint32

+ Size func() uint32

+ type MemoryPointer struct

+ func NewMemoryPointer(data []byte) *MemoryPointer

+ func (m *MemoryPointer) Compressed() bool

+ func (m *MemoryPointer) Data() ([]byte, error)

+ func (m *MemoryPointer) RawSize() uint32

+ func (m *MemoryPointer) Size() uint32

+ type MemoryPointerCompressed struct

+ func NewMemoryPointerCompressed(compressed []byte, rawSize uint32) *MemoryPointerCompressed

+ func NewMemoryPointerCompressedAuto(compressed []byte) *MemoryPointerCompressed

+ func (m *MemoryPointerCompressed) Compressed() bool

+ func (m *MemoryPointerCompressed) Data() ([]byte, error)

+ func (m *MemoryPointerCompressed) RawSize() uint32

+ func (m *MemoryPointerCompressed) Size() uint32