username

package module

v1.0.0 Latest Latest Go to latest Published: Feb 17, 2021 License: BSD-3-Clause Imports: 7 Imported by: 1

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
Learn more about best practices

Repository

github.com/aaronland/go-ucd-username

Links

Open Source Insights

README ¶

go-ucd-username

Generates ASCII URL-safe aliases for Unicode usernames containing non-alphanumeric characters.

What is this thing?

go-ucd-username generates ASCII URI-safe aliases for Unicode usernames containing non-alphanumeric (plus dashes) characters by converting them in to ASCII equivalents using the go-ucd package.

Specifically any character that is not [a-zA-Z0-9\-] is passed to go-ucd to determine its equivalent Unicode name string. By default those strings are simple descriptive ASCII English names, but some names in the Unihan dataset contain non-ASCII characters so a final pass to filter out any character that is not [a-zA-Z0-9\-] is applied.

By default any whitespace or punctuation characters are ignored entirely but you can toggle these defaults if you choose (at which point they will be processed by go-ucd).

All strings are lower-cased.

Example

Given the string mr. 😁 / ../test 🚀 㐖 the following would happen:

2016/10/03 07:51:15 PARSE mr. 😁 / ../test 🚀 㐖
2016/10/03 07:51:15 RUNE 0 U+006D 'm'
2016/10/03 07:51:15 RUNE 1 U+0072 'r'
2016/10/03 07:51:15 RUNE 2 U+002E '.'
2016/10/03 07:51:15 RUNE 2 U+002E '.' is punctuation	SKIPPING
2016/10/03 07:51:15 RUNE 3 U+0020 ' '
2016/10/03 07:51:15 RUNE 3 U+0020 ' ' is space	SKIPPING
2016/10/03 07:51:15 RUNE 4 U+1F601 '😁'
2016/10/03 07:51:15 RUNE 4 U+1F601 '😁' is not whitelisted	PROCESSING
2016/10/03 07:51:15 RUNE 4 U+1F601 '😁' return string 'GRINNING FACE WITH SMILING EYES'	PROCESSING
2016/10/03 07:51:15 RUNE 4:0 U+0047 'G'
2016/10/03 07:51:15 RUNE 4:1 U+0052 'R'
2016/10/03 07:51:15 RUNE 4:2 U+0049 'I'
2016/10/03 07:51:15 RUNE 4:3 U+004E 'N'
2016/10/03 07:51:15 RUNE 4:4 U+004E 'N'
2016/10/03 07:51:15 RUNE 4:5 U+0049 'I'
2016/10/03 07:51:15 RUNE 4:6 U+004E 'N'
2016/10/03 07:51:15 RUNE 4:7 U+0047 'G'
2016/10/03 07:51:15 RUNE 4:8 U+0020 ' '
2016/10/03 07:51:15 RUNE 4:9 U+0046 'F'
2016/10/03 07:51:15 RUNE 4:10 U+0041 'A'
2016/10/03 07:51:15 RUNE 4:11 U+0043 'C'
2016/10/03 07:51:15 RUNE 4:12 U+0045 'E'
2016/10/03 07:51:15 RUNE 4:13 U+0020 ' '
2016/10/03 07:51:15 RUNE 4:14 U+0057 'W'
2016/10/03 07:51:15 RUNE 4:15 U+0049 'I'
2016/10/03 07:51:15 RUNE 4:16 U+0054 'T'
2016/10/03 07:51:15 RUNE 4:17 U+0048 'H'
2016/10/03 07:51:15 RUNE 4:18 U+0020 ' '
2016/10/03 07:51:15 RUNE 4:19 U+0053 'S'
2016/10/03 07:51:15 RUNE 4:20 U+004D 'M'
2016/10/03 07:51:15 RUNE 4:21 U+0049 'I'
2016/10/03 07:51:15 RUNE 4:22 U+004C 'L'
2016/10/03 07:51:15 RUNE 4:23 U+0049 'I'
2016/10/03 07:51:15 RUNE 4:24 U+004E 'N'
2016/10/03 07:51:15 RUNE 4:25 U+0047 'G'
2016/10/03 07:51:15 RUNE 4:26 U+0020 ' '
2016/10/03 07:51:15 RUNE 4:27 U+0045 'E'
2016/10/03 07:51:15 RUNE 4:28 U+0059 'Y'
2016/10/03 07:51:15 RUNE 4:29 U+0045 'E'
2016/10/03 07:51:15 RUNE 4:30 U+0053 'S'
2016/10/03 07:51:15 RUNE 8 U+0020 ' '
2016/10/03 07:51:15 RUNE 8 U+0020 ' ' is space	SKIPPING
2016/10/03 07:51:15 RUNE 9 U+002F '/'
2016/10/03 07:51:15 RUNE 9 U+002F '/' is punctuation	SKIPPING
2016/10/03 07:51:15 RUNE 10 U+0020 ' '
2016/10/03 07:51:15 RUNE 10 U+0020 ' ' is space	SKIPPING
2016/10/03 07:51:15 RUNE 11 U+002E '.'
2016/10/03 07:51:15 RUNE 11 U+002E '.' is punctuation	SKIPPING
2016/10/03 07:51:15 RUNE 12 U+002E '.'
2016/10/03 07:51:15 RUNE 12 U+002E '.' is punctuation	SKIPPING
2016/10/03 07:51:15 RUNE 13 U+002F '/'
2016/10/03 07:51:15 RUNE 13 U+002F '/' is punctuation	SKIPPING
2016/10/03 07:51:15 RUNE 14 U+0074 't'
2016/10/03 07:51:15 RUNE 15 U+0065 'e'
2016/10/03 07:51:15 RUNE 16 U+0073 's'
2016/10/03 07:51:15 RUNE 17 U+0074 't'
2016/10/03 07:51:15 RUNE 18 U+0020 ' '
2016/10/03 07:51:15 RUNE 18 U+0020 ' ' is space	SKIPPING
2016/10/03 07:51:15 RUNE 19 U+1F680 '🚀'
2016/10/03 07:51:15 RUNE 19 U+1F680 '🚀' is not whitelisted	PROCESSING
2016/10/03 07:51:15 RUNE 19 U+1F680 '🚀' return string 'ROCKET'	PROCESSING
2016/10/03 07:51:15 RUNE 19:0 U+0052 'R'
2016/10/03 07:51:15 RUNE 19:1 U+004F 'O'
2016/10/03 07:51:15 RUNE 19:2 U+0043 'C'
2016/10/03 07:51:15 RUNE 19:3 U+004B 'K'
2016/10/03 07:51:15 RUNE 19:4 U+0045 'E'
2016/10/03 07:51:15 RUNE 19:5 U+0054 'T'
2016/10/03 07:51:15 RUNE 23 U+0020 ' '
2016/10/03 07:51:15 RUNE 23 U+0020 ' ' is space	SKIPPING
2016/10/03 07:51:15 RUNE 24 U+3416 '㐖'
2016/10/03 07:51:15 RUNE 24 U+3416 '㐖' is not whitelisted	PROCESSING
2016/10/03 07:51:15 RUNE 24 U+3416 '㐖' return string '㐖毒, AN OLD NAME FOR INDIA'	PROCESSING
2016/10/03 07:51:15 RUNE 24:0 U+3416 '㐖'
2016/10/03 07:51:15 RUNE 24:3 U+6BD2 '毒'
2016/10/03 07:51:15 RUNE 24:6 U+002C ','
2016/10/03 07:51:15 RUNE 24:7 U+0020 ' '
2016/10/03 07:51:15 RUNE 24:8 U+0041 'A'
2016/10/03 07:51:15 RUNE 24:9 U+004E 'N'
2016/10/03 07:51:15 RUNE 24:10 U+0020 ' '
2016/10/03 07:51:15 RUNE 24:11 U+004F 'O'
2016/10/03 07:51:15 RUNE 24:12 U+004C 'L'
2016/10/03 07:51:15 RUNE 24:13 U+0044 'D'
2016/10/03 07:51:15 RUNE 24:14 U+0020 ' '
2016/10/03 07:51:15 RUNE 24:15 U+004E 'N'
2016/10/03 07:51:15 RUNE 24:16 U+0041 'A'
2016/10/03 07:51:15 RUNE 24:17 U+004D 'M'
2016/10/03 07:51:15 RUNE 24:18 U+0045 'E'
2016/10/03 07:51:15 RUNE 24:19 U+0020 ' '
2016/10/03 07:51:15 RUNE 24:20 U+0046 'F'
2016/10/03 07:51:15 RUNE 24:21 U+004F 'O'
2016/10/03 07:51:15 RUNE 24:22 U+0052 'R'
2016/10/03 07:51:15 RUNE 24:23 U+0020 ' '
2016/10/03 07:51:15 RUNE 24:24 U+0049 'I'
2016/10/03 07:51:15 RUNE 24:25 U+004E 'N'
2016/10/03 07:51:15 RUNE 24:26 U+0044 'D'
2016/10/03 07:51:15 RUNE 24:27 U+0049 'I'
2016/10/03 07:51:15 RUNE 24:28 U+0041 'A'

Resulting in the string mrgrinningfacewithsmilingeyestestrocketanoldnameforindia. What you do (or don't do) with that string afterwards is entirely up to you!

But... why?

Principally so that you can provide meaningful "pretty" URL-safe aliases for users with full Unicode usernames.

For example, a user with the name Admiral🍦 would have the URL alias /admiralsofticecream. If you don't already have users with names like that... you will.

While it's true that an Internalized Resource Identifier (IRI) would allow you to create an equivalent /Admiral%20🍦 URL it's still early days for IRIs meaning browser support is uneven and there are a number of security concerns that haven't been fully sorted yet.

go-ucd-username side-steps all those issues and allows for a better-than-nothing alternative.

Usage

package main

import (
	"flag"
	"fmt"
	"github.com/aaronland/go-ucd-username"
	"log"
	"os"
	"strings"
)

func main() {

	var spaces = flag.Bool("spaces", false, "Do not filter out whitespace during processing")
	var punct = flag.Bool("punct", false, "Do not filter out punctuation during processing")
	var debug = flag.Bool("debug", false, "Enable verbose logging during processing")

	flag.Parse()
	args := flag.Args()

	pretty := strings.Join(args, " ")

	uname, err := username.NewUCDUsername()

	if err != nil {
		log.Fatal(err)
	}

	uname.Debug = *debug
	uname.AllowSpaces = *spaces
	uname.AllowPunctuation = *punct

	safe, err := uname.Translate(pretty)

	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(safe)
	os.Exit(0)
}

Tools

> make cli
GOARCH=wasm GOOS=js go build -mod vendor -o http/wasm/ucd.wasm cmd/ucd-wasm/main.go
go build -mod vendor -o bin/ucd-username cmd/ucd-username/main.go
go build -mod vendor -o bin/ucd-username-server cmd/ucd-username-server/main.go

ucd-username

Command line tool for converting strings in to valid UCD usernames.

$> ./bin/ucd-username -h
Command line tool for converting strings in to valid UCD usernames.

Usage:
	 ./bin/ucd-username [options] string(N) string(N) string(N)

For example:
	./bin/ucd-username captain 🧍 ✨ 
	aptainastandingpersonsarkles

Valid options are:
  -debug
    	Enable verbose logging during processing
  -punct
    	Do not filter out punctuation during processing
  -spaces
    	Do not filter out whitespace during processing

For example:

./bin/ucd-username mr. 😁
mrgrinningfacewithsmilingeyes

ucd-username-server

HTTP server exposing the ucd-username functionality.

$> ./bin/ucd-username-server -h
HTTP server exposing the ucd-username functionality.

Usage:
	 ./bin/ucd-username-server [options] 

For example:
	./bin/ucd-username-server
	2021/02/17 08:55:00 Listening on http://localhost:8080

Valid options are:
  -debug
    	Enable verbose logging during processing
  -enable-api
    	Enable the /api endpoint (default true)
  -enable-www
    	Enable the / endpoint (default true)
  -host string
    	What host to bind ucd-username-server to. This fs is DEPRECATED. Please use -server-uri instead. (default "localhost")
  -port int
    	What port to bind ucd-username-server to. This fs is DEPRECATED. Please use -server-uri instead. (default 8080)
  -punct
    	Do not filter out punctuation during processing
  -server-uri string
    	A valid aaronland/go-http-server URI. (default "http://localhost:8080")
  -spaces
    	Do not filter out whitespace during processing

For example:

./bin/ucd-username-server -port 8080
2017/04/07 18:02:51 listening on localhost:8080

And then:

# as in: http://localhost:8080?username=mr. 😁

$> curl -s -i 'http://localhost:8080/api?username=mr.+%F0%9F%98%81'
HTTP/1.1 200 OK
Content-Length: 29
Content-Type: text/plain
Date: Sat, 08 Apr 2017 01:02:58 GMT

mrgrinningfacewithsmilingeyes

WASM

The ucd-wasm.go tool exports the ucd-username functionality was a WebAssembly binary. This binary is bundled with the ucd-username-server application and is exposed on the / endpoint, assuming the -enable-www flag is true.

As of this writing space and punctuation are explicitly disallowed when converting usernames. That could/should be modified to check input variables (in JavaScript-land) but today it does not.

Docker

Yes.

docker build -t ucd-username .
docker run -p 6161:8080 -e HOST='0.0.0.0' ucd-username

curl 'localhost:6161?/apiusername=\U+01F937'
shrug

Versions

go-ucd-username supports Unicode 13.0 (specifically aaronland/go-ucd/v13 as of February, 2021 and requires Go 1.16 or higher to compile.

Documentation ¶

Index ¶

type UCDUsername
- func NewUCDUsername() (*UCDUsername, error)
- func (u *UCDUsername) Translate(raw string) (string, error)

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type UCDUsername ¶

type UCDUsername struct {
	AllowSpaces      bool
	AllowPunctuation bool
	Debug            bool
	// contains filtered or unexported fields
}

func NewUCDUsername ¶

func NewUCDUsername() (*UCDUsername, error)

func (*UCDUsername) Translate ¶

func (u *UCDUsername) Translate(raw string) (string, error)

Source Files ¶

View all Source files

username.go

Directories ¶

Path	Synopsis
cmd
ucd-username
ucd-username-server
ucd-wasm
http
api
wasm

?	: This menu
/	: Search site
f or F	: Jump to
y or Y	: Canonical URL

README ¶

go-ucd-username

What is this thing?

Example

But... why?

Usage

Tools

ucd-username

ucd-username-server

WASM

Docker

Versions

See also

Documentation ¶

Index ¶

Constants ¶

Variables ¶

Functions ¶

Types ¶

type UCDUsername ¶

func NewUCDUsername ¶

func (*UCDUsername) Translate ¶

Source Files ¶

Directories ¶