nitter/src/formatters.nim

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import strutils, strformat, htmlgen, xmltree
import regex
import ./types, ./utils
const
urlRegex = re"((https?|ftp)://(-\.)?([^\s/?\.#]+\.?)+(/[^\s]*)?)"
emailRegex = re"([a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+)"
usernameRegex = re"(^|[^\S\n]|\.)@([A-z0-9_]+)"
picRegex = re"pic.twitter.com/[^ ]+"
cardRegex = re"(https?://)?cards.twitter.com/[^ ]+"
ellipsisRegex = re" ?…"
proc shortLink*(text: string; length=28): string =
result = text.replace(re"https?://(www.)?", "")
if result.len > length:
result = result[0 ..< length] & ""
proc toLink*(url, text: string; class="timeline-link"): string =
htmlgen.a(text, class=class, href=url)
proc reUrlToLink*(m: RegexMatch; s: string): string =
let url = s[m.group(0)[0]]
toLink(url, " " & shortLink(url))
proc reEmailToLink*(m: RegexMatch; s: string): string =
let url = s[m.group(0)[0]]
toLink("mailto://" & url, url)
proc reUsernameToLink*(m: RegexMatch; s: string): string =
var
username = ""
pretext = ""
let
pre = m.group(0)
match = m.group(1)
username = s[match[0]]
if pre.len > 0:
pretext = s[pre[0]]
pretext & toLink("/" & username, "@" & username)
proc linkifyText*(text: string): string =
result = text.replace("\n", "<br>")
result = result.replace(ellipsisRegex, "")
result = result.replace(usernameRegex, reUsernameToLink)
result = result.replace(emailRegex, reEmailToLink)
result = result.replace(urlRegex, reUrlToLink)
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result = result.replace(re"</a>\s+", "</a> ")
result = result.replace(re"</a> ([.,\)])", "</a>$1")
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proc stripTwitterUrls*(text: string): string =
result = text
result = result.replace(picRegex, "")
result = result.replace(cardRegex, "")
result = result.replace(ellipsisRegex, "")
proc getUserpic*(userpic: string; style=""): string =
let pic = userpic.replace(re"_(normal|bigger|mini|200x200)(\.[A-z]+)$", "$2")
pic.replace(re"(\.[A-z]+)$", style & "$1")
proc getUserpic*(profile: Profile; style=""): string =
getUserPic(profile.userpic, style)
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proc formatName*(profile: Profile): string =
result = xmltree.escape(profile.fullname)
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if profile.verified:
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result &= htmlgen.span("", class="verified-icon")
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elif profile.protected:
result &= " 🔒"
proc linkUser*(profile: Profile; h: string; username=true; class=""): string =
let text =
if username: "@" & profile.username
else: formatName(profile)
if h.len == 0:
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return htmlgen.a(text, href = &"/{profile.username}", class=class)
let element = &"<{h} class=\"{class}\">{text}</{h}>"
htmlgen.a(element, href = &"/{profile.username}")