util

golang utils for common use

Basic Usage

Installation

To get the package, execute:

go get github.com/gofika/util

FileUtil

package main

import (
	"fmt"
	"github.com/gofika/util/fileutil"
)

func main() {
	name := "foo/bar.txt"
	data := []byte("Hello")
	// write data to file. will create dir: foo
	err := fileutil.WriteFile(name, data)
	if err != nil {
		fmt.Printf("Write file failed. err: %s\n", err.Error())
		return
	}
	// check file exist
	if !fileutil.IsExist(name) {
		fmt.Printf("file %s not exist.\n", name)
		return
	}
	// clear temp file
	fileutil.DeleteAll("foo")
}

GobUtil

package main

import (
	"fmt"
	"github.com/gofika/util/gobutil"
)

func main() {
	type Foo struct {
		Name  string
		Value int
	}
	type Bar struct {
		Name  string
		Value int
	}
	foo := &Foo{"Jason", 100}
	// deep copy for different struct
	var bar Bar
	err := gobutil.DeepCopy(&bar, foo)
	if err != nil {
		fmt.Printf("DeepCopy failed. err: %s\n", err.Error())
		return
	}
	fmt.Printf("bar.Name: %s\n", bar.Name)
	fmt.Printf("bar.Value: %d\n", bar.Value)
}

JsonUtil

package main

import (
	"fmt"
	"github.com/gofika/util/jsonutil"
)

type Foo struct {
	Name  string `json:"name"`
	Value int    `json:"value"`
}

func main() {
	foo := &Foo{
		Name:  "Jason",
		Value: 100,
	}
	name := "foo.json"
	// write struct to file
	err := jsonutil.WriteFile(name, foo)
	if err != nil {
		fmt.Printf("WriteFile failed. err: %s\n", err.Error())
		return
	}
	// read struct from file
	var bar Foo
	err = jsonutil.ReadFile(name, &bar)
	if err != nil {
		fmt.Printf("ReadFile failed. err: %s\n", err.Error())
		return
	}
	fmt.Printf("bar.Name: %s\n", bar.Name)
	fmt.Printf("bar.Value: %d\n", bar.Value)
}