bytesutil

package
v1.101.0 Latest Latest
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Published: Apr 25, 2024 License: Apache-2.0 Imports: 14 Imported by: 58

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func InternBytes added in v1.86.0

func InternBytes(b []byte) string

InternBytes interns b as a string

func InternString added in v1.82.0

func InternString(s string) string

InternString returns interned s.

This may be needed for reducing the amounts of allocated memory.

func Itoa added in v1.85.0

func Itoa(n int) string

Itoa returns string representation of n.

This function doesn't allocate memory on repeated calls for the same n.

func ResizeNoCopyMayOverallocate added in v1.73.0

func ResizeNoCopyMayOverallocate(b []byte, n int) []byte

ResizeNoCopyMayOverallocate resizes b to minimum n bytes and returns the resized buffer (which may be newly allocated).

If newly allocated buffer is returned then b contents isn't copied to it.

func ResizeNoCopyNoOverallocate added in v1.73.0

func ResizeNoCopyNoOverallocate(b []byte, n int) []byte

ResizeNoCopyNoOverallocate resizes b to exactly n bytes and returns the resized buffer (which may be newly allocated).

If newly allocated buffer is returned then b contents isn't copied to it.

func ResizeWithCopyMayOverallocate added in v1.73.0

func ResizeWithCopyMayOverallocate(b []byte, n int) []byte

ResizeWithCopyMayOverallocate resizes b to minimum n bytes and returns the resized buffer (which may be newly allocated).

If newly allocated buffer is returned then b contents is copied to it.

func ResizeWithCopyNoOverallocate added in v1.73.0

func ResizeWithCopyNoOverallocate(b []byte, n int) []byte

ResizeWithCopyNoOverallocate resizes b to exactly n bytes and returns the resized buffer (which may be newly allocated).

If newly allocated buffer is returned then b contents is copied to it.

func ToUnsafeBytes

func ToUnsafeBytes(s string) []byte

ToUnsafeBytes converts s to a byte slice without memory allocations.

The returned byte slice is valid only until s is reachable and unmodified.

func ToUnsafeString

func ToUnsafeString(b []byte) string

ToUnsafeString converts b to string without memory allocations.

The returned string is valid only until b is reachable and unmodified.

Types

type ByteBuffer

type ByteBuffer struct {
	// B is the underlying byte slice.
	B []byte
}

ByteBuffer implements a simple byte buffer.

func (*ByteBuffer) MustClose

func (bb *ByteBuffer) MustClose()

MustClose closes bb for subsequent re-use.

func (*ByteBuffer) MustReadAt added in v1.33.0

func (bb *ByteBuffer) MustReadAt(p []byte, offset int64)

MustReadAt reads len(p) bytes starting from the given offset.

func (*ByteBuffer) NewReader

func (bb *ByteBuffer) NewReader() filestream.ReadCloser

NewReader returns new reader for the given bb.

func (*ByteBuffer) Path added in v1.91.0

func (bb *ByteBuffer) Path() string

Path returns an unique id for bb.

func (*ByteBuffer) ReadFrom added in v1.20.2

func (bb *ByteBuffer) ReadFrom(r io.Reader) (int64, error)

ReadFrom reads all the data from r to bb until EOF.

func (*ByteBuffer) Reset

func (bb *ByteBuffer) Reset()

Reset resets bb.

func (*ByteBuffer) Write

func (bb *ByteBuffer) Write(p []byte) (int, error)

Write appends p to bb.

type ByteBufferPool

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

ByteBufferPool is a pool of ByteBuffers.

func (*ByteBufferPool) Get

func (bbp *ByteBufferPool) Get() *ByteBuffer

Get obtains a ByteBuffer from bbp.

func (*ByteBufferPool) Put

func (bbp *ByteBufferPool) Put(bb *ByteBuffer)

Put puts bb into bbp.

type FastStringMatcher added in v1.82.0

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

FastStringMatcher implements fast matcher for strings.

It caches string match results and returns them back on the next calls without calling the matchFunc, which may be expensive.

func NewFastStringMatcher added in v1.82.0

func NewFastStringMatcher(matchFunc func(s string) bool) *FastStringMatcher

NewFastStringMatcher creates new matcher, which applies matchFunc to strings passed to Match()

matchFunc must return the same result for the same input.

func (*FastStringMatcher) Match added in v1.82.0

func (fsm *FastStringMatcher) Match(s string) bool

Match applies matchFunc to s and returns the result.

type FastStringTransformer added in v1.82.0

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

FastStringTransformer implements fast transformer for strings.

It caches transformed strings and returns them back on the next calls without calling the transformFunc, which may be expensive.

func NewFastStringTransformer added in v1.82.0

func NewFastStringTransformer(transformFunc func(s string) string) *FastStringTransformer

NewFastStringTransformer creates new transformer, which applies transformFunc to strings passed to Transform()

transformFunc must return the same result for the same input.

func (*FastStringTransformer) Transform added in v1.82.0

func (fst *FastStringTransformer) Transform(s string) string

Transform applies transformFunc to s and returns the result.

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