filebuf

package module

v0.0.0-...-7d8c00c Latest Latest Go to latest Published: Nov 16, 2021 License: MIT Imports: 5 Imported by: 1

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README ¶

Rope file buffer package for fast editing operations on large files.

Maintain a tree, where each node is 'backed' by a buffer or a portion
of a file.  Then editing operation such as deletions and insertions can
be done efficiently, not by changing a file or buffer, but rather by
modifying the tree-overlay.

Documentation ¶

Overview ¶

Package for efficient editing operations on big files

Index ¶

type Buffer

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Buffer ¶

type Buffer struct {
	// contains filtered or unexported fields
}

implements io.ReadWriteSeeker

func NewEmpty ¶

func NewEmpty() *Buffer

func NewMem ¶

func NewMem(b []byte) *Buffer

Use byte array b as source for a filebuffer

func OpenFile ¶

func OpenFile(f string) (*Buffer, error)

Open file 'f' as source for a filebuffer As long as you are using buffers predicated on 'f', you probably shouldn't change the file on disk

func (*Buffer) Copy ¶

func (fb *Buffer) Copy(offset int64, size int64) *Buffer

Copy size bytes at offset

func (*Buffer) Cut ¶

func (fb *Buffer) Cut(offset int64, size int64) *Buffer

Cut size bytes at offset

func (*Buffer) Dump ¶

func (fb *Buffer) Dump(out io.Writer)

Dump contents to out

func (*Buffer) Insert ¶

func (fb *Buffer) Insert(offset int64, bs []byte) error

Insert a byte slice

func (*Buffer) Insert1 ¶

func (fb *Buffer) Insert1(offset int64, b byte) error

Insert 1 byte

func (*Buffer) Iter ¶

func (fb *Buffer) Iter(cb func([]byte) bool)

iterate over the file, give the callback byte slices for READING ONLY

func (*Buffer) IterFrom ¶

func (fb *Buffer) IterFrom(from int64, cb func([]byte) bool)

Same as Iter, but start at offset

func (*Buffer) Paste ¶

func (fb *Buffer) Paste(offset int64, paste *Buffer)

Paste buf at offset (copies the paste buffer)

func (*Buffer) Read ¶

func (fb *Buffer) Read(p []byte) (int, error)

io.Reader

func (*Buffer) Remove ¶

func (fb *Buffer) Remove(offset int64, size int64)

func (*Buffer) Seek ¶

func (fb *Buffer) Seek(offset int64, whence int) (int64, error)

io.Seeker

func (*Buffer) Size ¶

func (fb *Buffer) Size() int64

func (*Buffer) Write ¶

func (fb *Buffer) Write(p []byte) (int, error)

io.Writer

Source Files ¶

View all Source files

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