tools

Documentation

Overview

Package tools encapsulates a collection of utility functions designed to support various common operations throughout the application. These utilities provide essential functionalities such as secure random string generation, data transformation, and system-level interactions, among others.

The package aims to offer a centralized repository of tools that promote code reuse and maintainability. Each function within the package is implemented to be self-contained, with a clear purpose, minimal dependencies, and adherence to the principles of clean and idiomatic Go code.

One of the foundational utilities is GenerateRandomString, which relies on the crypto/rand package from the Go standard library to produce cryptographically secure random strings. These strings are suitable for sensitive operations where unpredictability is crucial, such as generating unique identifiers or secure tokens.

As the application evolves, the tools package is expected to grow with additional utilities that serve the emerging needs of the application while maintaining simplicity and efficiency.

Usage of the tools package is intended to be straightforward, with each utility function being well-documented and accompanied by examples demonstrating its use.

Copyright (c) 2024 H0llyW00dzZ

Index

• func GenerateRandomString(length int) (string, error)

Functions

func GenerateRandomString

func GenerateRandomString(length int) (string, error)

GenerateRandomString returns a random string of a specified length, composed of alphanumeric characters. The function ensures the randomness is cryptographically secure, making the generated string suitable for a variety of security-sensitive applications. Parameters:

length int - The desired length of the random string to generate. Must be a positive integer.

Returns:

string - A random string of the specified length.
error  - An error message if the length parameter is non-positive or if there is an issue
         with the random number generator.

The charset used for generating the random string includes all lowercase and uppercase letters of the English alphabet, as well as digits from 0 to 9. The function generates a slice of random bytes of the specified length and maps each byte to a character in the charset to construct the final string.

Example usage:

randomString, err := GenerateRandomString(16)
if err != nil {
  // Handle error
}
fmt.Println(randomString) // Output might be something like: "3xampleV4lu3Str1ng"

Note:

If the provided length is zero or negative, the function will return an error rather
than an empty string. This is to ensure the caller is explicitly aware of the misuse
of the function rather than failing silently with potentially unintended consequences.