util

Documentation

Index

• func CheckIfValidLink(url string, httpsOnly bool) error
• func CheckIfValidShort(sl, reserved string, allowedRx *regexp.Regexp) error
• func GetRandString(n int) string

Functions

func CheckIfValidLink

func CheckIfValidLink(url string, httpsOnly bool) error

CheckIfValidLink checks an URL if it is a valid link. So first, it checks if it starts with 'http'. If httpsOnly is set, it will be checked if the link starts with https. Then, a http request is executed to the link. If this fails or responds with an status code >= 400, the link is invalid and an error will be returned. The link is qualified as valid if the returned error is nil.

func CheckIfValidShort

func CheckIfValidShort(sl, reserved string, allowedRx *regexp.Regexp) error

CheckIfValidShort checks if the short link is contained in the reserved string or if the short link does not single-result match the allowedRx. The short link is qualified as valid if the returned error is nil.

func GetRandString

func GetRandString(n int) string

GetRandString returnes a random stirng of the defined length.