Go Helper

Go Helper is a Golang library for various needs.

Installation

Assumption Go is already installed and configured just use go get command.

go get github.com/ihsankurniawan/go-helper

Usage

Array

import "github.com/ihsankurniawan/go-helper"

// Can be used for basic types such as int, uint, string, etc
var a int
var b []int
a = 1
b = []int{1, 2, 3}

rs, idx := helper.InArray(a, b) // returns true, 0

// Same like InArray function but not returning index
rs = helper.InArrayNoIndex(a, b) // returns true

// Same like InArray function but only for string, faster than InArray
rs = helper.InArrayContains("foo", []string{"foo", "bar"}) // returns true

File

import "github.com/ihsankurniawan/go-helper"

// Function to save multipart file into desired location
var someFile multipart.File

err := helper.SaveFileToDisk(someFile, "/tmp/someFile.jpg") // returns error if there any

Image

import "github.com/ihsankurniawan/go-helper"

// Convert base64 of image to standard img file
// Currently only support jpeg and png
// returns image and error if there any
img, err := helper.Base64ToImg("/tmp/temporary-file", "base64encoded of image file") 

String

import "github.com/ihsankurniawan/go-helper"

// Randomize string with given length and charset
// You can also use constant in this helper, available:
// STRING_NUMBER        = "0123456789"
// STRING_ALPHABET_LOWER= "abcdefghijklmnopqrstuvwxyz"
// STRING_ALPHABET_UPPER= "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
// STRING_ALPHANUMERIC 	= STRING_ALPHABET_LOWER + STRING_ALPHABET_UPPER + STRING_NUMBER
str := helper.StringRandomWithCharset(5, "abcde") // return "aabad"

// Randomize string with lowercase alphabet, uppercase alphabet, number with given length
str = helper.StringRandom(5) // return "ab12F"

// Function to check whether string can be converted to json or not
isJson := helper.StringIsJSON("{}") // return true

// Function to convert int to IDR currency format
str = helper.FormatToIdrCurrency(100000) // return "100.000"

// Remove whitespace from string
str = helper.WhiteSpaceRemove(" lorem ipsum ") // return "loremipsum"

Struct

import "github.com/ihsankurniawan/go-helper"

// Function to check whether given struct is empty or not
isEmpty := helper.IsEmpty(struct{}{}) // return true 

Telco Operator

This is only for Indonesian operator only

import "github.com/ihsankurniawan/go-helper"

// Function to check whether given phone number is from Telkomsel operator
isTelkomsel := helper.TselPrefix("6281312341234") // return true 

// Function to check whether given phone number is from Indosat operator
isIndosat := helper.IsatPrefix("6285612341234") // return true 

// Function to check whether given phone number is from XL operator
isIndosat := helper.XlPrefix("6281712341234") // return true 

// Function to check whether given phone number is from Three operator
isIndosat := helper.ThreePrefix("6289512341234") // return true 

Struct

import "github.com/ihsankurniawan/go-helper"

// Function to get Time in Asia/Jakarta GMT+7 location based
now := helper.GetJakartaNowTime() // return time.Time

URL

import "github.com/ihsankurniawan/go-helper"

// Helper to extract json data from given URL, only available for GET method
type SomeStruct struct{
    Id    int    `json:"id"`
    Data  string `json:"data"`
}
var str SomeStruct

// var str will be filled if json data match
err := helper.GetJsonDataFromUrl("https://someurl.com", &str) // return error if there any

// Basically same like above function, only difference is URL returns XML data
err = helper.GetXmlDataFromUrl("https://someurl.com", &str) // return error if there any

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

Please make sure to update tests as appropriate.

License

MIT