Brendan LE GLAUNEC
5849898283
Unit tests functional and coverage back to 100% Add more routes to dictionary, add more credentials, add default port 5554, rename cameradar logs ENV variable, improve unit test readability, remove tmp file
64 lines
1.5 KiB
Go
64 lines
1.5 KiB
Go
package urn
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import (
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"strings"
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)
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// URN represents an Uniform Resource Name.
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//
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// The general form represented is:
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//
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// urn:<id>:<ss>
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//
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// Details at https://tools.ietf.org/html/rfc2141.
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type URN struct {
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prefix string // Static prefix. Equal to "urn" when empty.
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ID string // Namespace identifier
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SS string // Namespace specific string
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norm string // Normalized namespace specific string
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}
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// Normalize turns the receiving URN into its norm version.
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//
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// Which means: lowercase prefix, lowercase namespace identifier, and immutate namespace specific string chars (except <hex> tokens which are lowercased).
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func (u *URN) Normalize() *URN {
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return &URN{
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prefix: "urn",
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ID: strings.ToLower(u.ID),
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SS: u.norm,
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}
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}
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// Equal checks the lexical equivalence of the current URN with another one.
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func (u *URN) Equal(x *URN) bool {
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return *u.Normalize() == *x.Normalize()
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}
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// String reassembles the URN into a valid URN string.
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//
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// This requires both ID and SS fields to be non-empty.
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// Otherwise it returns an empty string.
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//
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// Default URN prefix is "urn".
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func (u *URN) String() string {
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var res string
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if u.ID != "" && u.SS != "" {
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if u.prefix == "" {
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res += "urn"
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}
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res += u.prefix + ":" + u.ID + ":" + u.SS
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}
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return res
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}
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// Parse is responsible to create an URN instance from a byte array matching the correct URN syntax.
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func Parse(u []byte) (*URN, bool) {
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urn, err := NewMachine().Parse(u)
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if err != nil {
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return nil, false
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}
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return urn, true
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}
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