const (
SecIDFree SecID = -1
SecIDEndOfChain SecID = -2
SecIDSAT SecID = -3
SecIDMSAT SecID = -4
DirEmpty DirType = 0
DirStorage DirType = 1
DirStream DirType = 2
DirRoot DirType = 5
Red Color = 0
Black Color = 1
)
type Color uint8
CDF file open for reading or writing
type ComDoc struct {
File io.ReaderAt
Header *Header
SectorSize int
ShortSectorSize int
FirstSector int64
MSAT, SAT, SSAT []SecID
Files []DirEnt
// contains filtered or unexported fields
}
func ReadFile(reader io.ReaderAt) (*ComDoc, error)
Parse an already-open CDF file for reading
func ReadPath(path string) (*ComDoc, error)
Open a CDF file for reading
func WriteFile(f *os.File) (*ComDoc, error)
Parse an already-open CDF file for reading and writing
func WritePath(path string) (*ComDoc, error)
Open a CDF file for reading and writing
func (r *ComDoc) AddFile(name string, contents []byte) error
Add or replace a named stream with the given contents. Only streams within the root storage are currently supported.
func (r *ComDoc) Close() error
Close the CDF and, if open for writing, commit the remainder of structures to disk.
func (r *ComDoc) DeleteFile(name string) error
Delete a file from the root storage if it exists
func (r *ComDoc) ListDir(parent *DirEnt) ([]*DirEnt, error)
List the items in a storage. If parent is nil, the root storage is used.
func (r *ComDoc) ReadStream(e *DirEnt) (io.Reader, error)
Open a stream for reading
func (r *ComDoc) RootStorage() *DirEnt
Return a pointer to the root storage.
Parsed CDF directory entry
type DirEnt struct {
RawDirEnt
// Index into the directory stream holding this entry
Index int
// contains filtered or unexported fields
}
func (e DirEnt) Name() string
Return the UTF8 name of this entry
type DirType uint8
Raw CDF file header
type Header struct {
Magic [8]byte
UID [16]byte
Revision uint16
Version uint16
ByteOrder uint16
SectorSize uint16 // power of 2
ShortSectorSize uint16 // power of 2
Reserved1 [6]byte
DirSectorCount uint32 // undocumented?
SATSectors uint32
DirNextSector SecID
Reserved2 uint32
MinStdStreamSize uint32
SSATNextSector SecID
SSATSectorCount uint32
MSATNextSector SecID
MSATSectorCount uint32
MSAT [msatInHeader]SecID
}
Raw CDF directory entry
type RawDirEnt struct {
NameRunes [32]uint16
NameLength uint16
Type DirType
Color Color
LeftChild int32
RightChild int32
StorageRoot int32
UID [16]byte
UserFlags uint32
CreateTime uint64
ModifyTime uint64
NextSector SecID
StreamSize uint32
// contains filtered or unexported fields
}
func (e RawDirEnt) Name() string
Return the UTF8 name of this entry
type SecID int32