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package renderer
import (
"html/template"
"io"
"regexp"
"strconv"
"strings"
"time"
"bloat/mastodon"
)
type Page string
const (
SigninPage = "signin.tmpl"
ErrorPage = "error.tmpl"
NavPage = "nav.tmpl"
RootPage = "root.tmpl"
TimelinePage = "timeline.tmpl"
ListsPage = "lists.tmpl"
ListPage = "list.tmpl"
ThreadPage = "thread.tmpl"
QuickReplyPage = "quickreply.tmpl"
NotificationPage = "notification.tmpl"
UserPage = "user.tmpl"
UserSearchPage = "usersearch.tmpl"
AboutPage = "about.tmpl"
EmojiPage = "emoji.tmpl"
LikedByPage = "likedby.tmpl"
RetweetedByPage = "retweetedby.tmpl"
SearchPage = "search.tmpl"
SettingsPage = "settings.tmpl"
FiltersPage = "filters.tmpl"
)
type TemplateData struct {
Data interface{}
Ctx *Context
}
func emojiHTML(e mastodon.Emoji, height string) string {
return `<img class="emoji" src="` + e.URL + `" alt=":` + e.ShortCode + `:" title=":` + e.ShortCode + `:" height="` + height + `"/>`
}
func emojiFilter(content string, emojis []mastodon.Emoji) string {
var replacements []string
for _, e := range emojis {
replacements = append(replacements, ":"+e.ShortCode+":", emojiHTML(e, "24"))
}
return strings.NewReplacer(replacements...).Replace(content)
}
var quoteRE = regexp.MustCompile("(?mU)(^|> *|\n)(>.*)(<br|$)")
func statusContentFilter(content string, emojis []mastodon.Emoji, mentions []mastodon.Mention) string {
content = quoteRE.ReplaceAllString(content, `$1<span class="quote">$2</span>$3`)
var replacements []string
for _, e := range emojis {
replacements = append(replacements, ":"+e.ShortCode+":", emojiHTML(e, "32"))
}
for _, m := range mentions {
replacements = append(replacements, `"`+m.URL+`"`, `"/user/`+m.ID+`" title="@`+m.Acct+`"`)
}
return strings.NewReplacer(replacements...).Replace(content)
}
func displayInteractionCount(c int64) string {
if c > 0 {
return strconv.Itoa(int(c))
}
return ""
}
func durUnit(s int64) (dur int64, unit string) {
if s < 60 {
if s < 0 {
s = 0
}
return s, "s"
}
m := s / 60
h := m / 60
if h < 2 {
return m, "m"
}
d := h / 24
if d < 2 {
return h, "h"
}
mo := d / 30
if mo < 2 {
return d, "d"
}
y := d / 365
if y < 2 {
return mo, "mo"
}
return y, "y"
}
func timeSince(t time.Time) string {
d, u := durUnit(time.Now().Unix() - t.Unix())
return strconv.FormatInt(d, 10) + u
}
func timeUntil(t time.Time) string {
d, u := durUnit(t.Unix() - time.Now().Unix())
return strconv.FormatInt(d, 10) + u
}
func formatTimeRFC3339(t time.Time) string {
return t.Format(time.RFC3339)
}
func formatTimeRFC822(t time.Time) string {
return t.Format(time.RFC822)
}
func withContext(data interface{}, ctx *Context) TemplateData {
return TemplateData{data, ctx}
}
func raw(s string) template.HTML {
return template.HTML(s)
}
func rawCSS(s string) template.CSS {
return template.CSS(s)
}
type Renderer interface {
Render(ctx *Context, writer io.Writer, page string, data interface{}) (err error)
}
type renderer struct {
template *template.Template
}
func NewRenderer(templateGlobPattern string) (r *renderer, err error) {
t := template.New("default")
t, err = t.Funcs(template.FuncMap{
"EmojiFilter": emojiFilter,
"StatusContentFilter": statusContentFilter,
"DisplayInteractionCount": displayInteractionCount,
"TimeSince": timeSince,
"TimeUntil": timeUntil,
"FormatTimeRFC3339": formatTimeRFC3339,
"FormatTimeRFC822": formatTimeRFC822,
"WithContext": withContext,
"HTML": template.HTMLEscapeString,
"Raw": raw,
"RawCSS": rawCSS,
}).ParseGlob(templateGlobPattern)
if err != nil {
return
}
return &renderer{
template: t,
}, nil
}
func (r *renderer) Render(ctx *Context, writer io.Writer,
page string, data interface{}) (err error) {
return r.template.ExecuteTemplate(writer, page, withContext(data, ctx))
}
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