ios

Documentation

Overview

Package ios 输入输出相关.

包括 ReadLine, ContainsReader, WalkDir.

Index

• Constants
• Variables
• func NewWriter(file string) (io.WriteCloser, error)
• func Read[E any](source <-chan E) (E, error)
• func ReadLine(file string, call func(line string) error) error
• func ReadTimeout[E any](source <-chan E, timeout time.Duration) (E, error)
• func ReaderLine(reader io.Reader, call func(line string) error) error
• func Unit(size int64, prec int) string
• func WalkDir(root string, walkDirFunc fs.WalkDirFunc, level int) error
• func Write[E any](data E, target chan<- E) (err error)
• func WriteTimeout[E any](data E, target chan<- E, timeout time.Duration) (err error)
• type ContainsReader
  • func NewContainsReader(reader io.Reader, subslice []byte) *ContainsReader
  • func (p *ContainsReader) Contains() bool
  • func (p *ContainsReader) Read(data []byte) (int, error)

Examples

• Read
• Unit
• Write

Constants

const (
	Kilo
	Meg
	Giga
	Tera
	Peta
	Exa
)

Variables

var (
	ErrTimeout   = errors.New("time out")
	ErrChanClose = errors.New("channel close")
)

Functions

func NewWriter

func NewWriter(file string) (io.WriteCloser, error)

NewWriter 新建Writer，file存在Seek末尾,不存在创建.

func Read

func Read[E any](source <-chan E) (E, error)

Read 读取管道.

Example

package main

import (
	"fmt"

	"github.com/xuender/oils/ios"
)

func main() {
	data := make(chan int, 1)

	data <- 1
	fmt.Println(ios.Read(data))
	close(data)
	fmt.Println(ios.Read(data))

}

Output:

1 <nil>
0 channel close

func ReadLine

func ReadLine(file string, call func(line string) error) error

func ReadTimeout

func ReadTimeout[E any](source <-chan E, timeout time.Duration) (E, error)

Read 限制时间内读取管道.

func ReaderLine

func ReaderLine(reader io.Reader, call func(line string) error) error

func Unit

func Unit(size int64, prec int) string

Example

package main

import (
	"fmt"

	"github.com/xuender/oils/ios"
)

func main() {
	fmt.Println(ios.Unit(1, 2))
	fmt.Println(ios.Unit(100, 2))
	fmt.Println(ios.Unit(1024, 2))
	fmt.Println(ios.Unit(1700, 2))
	fmt.Println(ios.Unit(3*ios.Meg, 2))

}

Output:

1B
100B
1KB
1.7KB
3MB

func WalkDir

func WalkDir(root string, walkDirFunc fs.WalkDirFunc, level int) error

func Write

func Write[E any](data E, target chan<- E) (err error)

Write 返回管道写入是否失败.

Example

package main

import (
	"fmt"

	"github.com/xuender/oils/ios"
)

func main() {
	data := make(chan int, 2)
	fmt.Println(ios.Write(1, data))
	close(data)
	fmt.Println(ios.Write(1, data))

}

Output:

<nil>
channel close

func WriteTimeout

func WriteTimeout[E any](data E, target chan<- E, timeout time.Duration) (err error)

WriteTimeout 返回管道写入是否失败.

Types

type ContainsReader

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

func NewContainsReader

func NewContainsReader(reader io.Reader, subslice []byte) *ContainsReader

func (*ContainsReader) Contains

func (p *ContainsReader) Contains() bool

func (*ContainsReader) Read

func (p *ContainsReader) Read(data []byte) (int, error)