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package main
import (
"fmt"
"regexp"
"strconv"
"strings"
emojipkg "github.com/enescakir/emoji"
)
const emojiListURL = "https://unicode.org/Public/emoji/13.0/emoji-test.txt"
var (
emojiRegex = regexp.MustCompile(`^(?m)(?P<code>[A-Z\d ]+[A-Z\d])\s+;\s+(fully-qualified|component)\s+#\s+.+\s+E\d+\.\d+ (?P<name>.+)$`)
toneRegex = regexp.MustCompile(`:\s.*tone,?`)
)
func fetchEmojis() (*groups, error) {
var emojis groups
b, err := fetchData(emojiListURL)
if err != nil {
return nil, err
}
var grp *group
var subgrp *subgroup
parseLine := func(line string) {
switch {
case strings.HasPrefix(line, "# group:"):
name := strings.TrimSpace(strings.ReplaceAll(line, "# group:", ""))
grp = emojis.Append(name)
case strings.HasPrefix(line, "# subgroup:"):
name := strings.TrimSpace(strings.ReplaceAll(line, "# subgroup:", ""))
subgrp = grp.Append(name)
case !strings.HasPrefix(line, "#"):
if e := newEmoji(line); e != nil {
subgrp.Append(*e)
}
}
}
if err = readLines(b, parseLine); err != nil {
return nil, err
}
return &emojis, nil
}
type groups struct {
Groups []*group
}
func (g *groups) Append(grpName string) *group {
// fmt.Printf("group: %v\n", grpName)
grp := group{Name: grpName}
g.Groups = append(g.Groups, &grp)
return &grp
}
type group struct {
Name string
Subgroups []*subgroup
}
func (g *group) Append(subgrpName string) *subgroup {
// fmt.Printf("subgroup: %v\n", subgrpName)
subgrp := subgroup{Name: subgrpName, Emojis: make(map[string][]emoji)}
g.Subgroups = append(g.Subgroups, &subgrp)
return &subgrp
}
type subgroup struct {
Name string
Emojis map[string][]emoji
Constants []string
}
func (s *subgroup) Append(e emoji) {
// fmt.Printf("emoji: %v\n", e)
if _, ok := s.Emojis[e.Constant]; ok {
s.Emojis[e.Constant] = append(s.Emojis[e.Constant], e)
} else {
s.Emojis[e.Constant] = []emoji{e}
s.Constants = append(s.Constants, e.Constant)
}
}
type emoji struct {
Name string
Constant string
Code string
Tones []string
}
func (e *emoji) String() string {
return fmt.Sprintf("name:%v, constant:%v, code:%v, tones: %v\n", e.Name, e.Constant, e.Code, e.Tones)
}
func newEmoji(line string) *emoji {
matches := emojiRegex.FindStringSubmatch(line)
if len(matches) < 4 {
return nil
}
code := matches[1]
name := matches[3]
e := emoji{
Name: name,
Constant: name,
Code: code,
Tones: []string{},
}
e.extractAttr()
e.generateConstant()
e.generateUnicode()
return &e
}
func (e *emoji) extractAttr() {
parts := strings.Split(e.Constant, ":")
if len(parts) < 2 {
// no attributes
return
}
c := parts[0]
attrs := strings.Split(parts[1], ",")
for _, attr := range attrs {
switch {
case strings.Contains(attr, "tone"):
e.Tones = append(e.Tones, attr)
case strings.Contains(attr, "beard"):
fallthrough
case strings.Contains(attr, "hair"):
c += " with " + attr
case strings.HasPrefix(c, "flag"):
c += " for " + attr
default:
c += " " + attr
}
}
e.Constant = c
}
func (e *emoji) generateConstant() {
c := clean(e.Constant)
c = strings.Title(strings.ToLower(c))
c = removeSpaces(c)
e.Constant = c
}
func (e *emoji) generateUnicode() {
unicodes := []string{}
for _, v := range strings.Split(e.Code, " ") {
u, err := strconv.ParseInt(v, 16, 32)
if err != nil {
panic(fmt.Errorf("unknown unicode: %v", v))
}
unicodes = append(unicodes, string(u))
}
e.Code = strings.Join(unicodes, "")
}
func defaultTone(basic, toned string) string {
toneInd := strings.IndexRune(toned, []rune(emojipkg.TonePlaceholder)[0])
for i, ch := range basic {
if i != toneInd {
continue
}
if ch == '\ufe0f' {
return "\ufe0f"
}
break
}
return ""
}
func replaceTones(code string) string {
for _, tone := range []emojipkg.Tone{
emojipkg.Light,
emojipkg.MediumLight,
emojipkg.Medium,
emojipkg.MediumDark,
emojipkg.Dark,
} {
code = strings.ReplaceAll(code, tone.String(), emojipkg.TonePlaceholder)
}
return code
}
|
