mirror of
https://github.com/teloxide/teloxide.git
synced 2024-10-23 17:36:54 +02:00
Merge pull request #1152 from YouKnow-sys/master
Add Render utility for recreating HTML or Markdown formatted text
This commit is contained in:
Lewis Pearson
GitHub
commit
4f090e46da
11 changed files with 625 additions and 9 deletions
|
|
@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
|
|||
- `bot.forward`, `bot.edit_live_location`, `bot.stop_live_location`, `bot.set_reaction`, `bot.pin`, `bot.unpin`, `bot.edit_text`, `bot.edit_caption`, `bot.edit_media`, `bot.edit_reply_markup`, `bot.stop_poll_message`, `bot.delete` and `bot.copy` methods to the new `crate::sugar::bot::BotMessagesExt` trait
|
||||
- `req.reply_to` method to the new `crate::sugar::request::RequestReplyExt` trait
|
||||
- `req.disable_link_preview` method to the new `crate::sugar::request::RequestLinkPreviewExt` trait
|
||||
- `utils::render` module to render HTML/Markdown-formatted output ([PR 1152](https://github.com/teloxide/teloxide/pull/1152))
|
||||
|
||||
### Changed
|
||||
|
||||
|
|
@ -560,4 +561,5 @@ This release was yanked because it accidentally [breaks backwards compatibility]
|
|||
## 0.1.0 - 2020-02-19
|
||||
|
||||
### Added
|
||||
|
||||
- This project.
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@ use serde::{Deserialize, Serialize};
|
|||
use crate::types::{ChatAdministratorRights, RequestId};
|
||||
|
||||
/// This object defines the criteria used to request a suitable chat.
|
||||
///
|
||||
/// Information about the selected chat will be shared with the bot when the
|
||||
/// corresponding button is pressed. The bot will be granted requested rights in
|
||||
/// the chat if appropriate. [More about requesting chats »]
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@ use serde::{Deserialize, Serialize};
|
|||
use crate::types::RequestId;
|
||||
|
||||
/// This object defines the criteria used to request a suitable users.
|
||||
///
|
||||
/// Information about the selected users will be shared with the bot when the
|
||||
/// corresponding button is pressed. More about requesting users »
|
||||
///
|
||||
|
|
|
|||
|
|
@ -53,9 +53,6 @@ impl Future for StopFlag {
|
|||
type Output = ();
|
||||
|
||||
fn poll(self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> task::Poll<Self::Output> {
|
||||
self.project().0.poll(cx).map(|res| match res {
|
||||
Err(_aborted) => (),
|
||||
Ok(unreachable) => match unreachable {},
|
||||
})
|
||||
self.project().0.poll(cx).map(|_res| ())
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
pub mod command;
|
||||
pub mod html;
|
||||
pub mod markdown;
|
||||
pub mod render;
|
||||
pub(crate) mod shutdown_token;
|
||||
|
||||
pub use teloxide_core::net::client_from_env;
|
||||
|
|
|
|||
|
|
@ -4,6 +4,10 @@
|
|||
|
||||
use teloxide_core::types::{User, UserId};
|
||||
|
||||
pub(super) const ESCAPE_CHARS: [char; 19] = [
|
||||
'\\', '_', '*', '[', ']', '(', ')', '~', '`', '>', '#', '+', '-', '=', '|', '{', '}', '.', '!',
|
||||
];
|
||||
|
||||
/// Applies the bold font style to the string.
|
||||
///
|
||||
/// Passed string will not be automatically escaped because it can contain
|
||||
|
|
@ -119,11 +123,8 @@ pub fn code_inline(s: &str) -> String {
|
|||
#[must_use = "This function returns a new string, rather than mutating the argument, so calling it \
|
||||
without using its output does nothing useful"]
|
||||
pub fn escape(s: &str) -> String {
|
||||
const CHARS: [char; 18] =
|
||||
['_', '*', '[', ']', '(', ')', '~', '`', '>', '#', '+', '-', '=', '|', '{', '}', '.', '!'];
|
||||
|
||||
s.chars().fold(String::with_capacity(s.len()), |mut s, c| {
|
||||
if CHARS.contains(&c) {
|
||||
if ESCAPE_CHARS.contains(&c) {
|
||||
s.push('\\');
|
||||
}
|
||||
s.push(c);
|
||||
|
|
@ -247,10 +248,11 @@ mod tests {
|
|||
|
||||
#[test]
|
||||
fn test_escape() {
|
||||
assert_eq!(escape("\\!"), r"\\\!");
|
||||
assert_eq!(escape("* foobar *"), r"\* foobar \*");
|
||||
assert_eq!(
|
||||
escape(r"_ * [ ] ( ) ~ \ ` > # + - = | { } . !"),
|
||||
r"\_ \* \[ \] \( \) \~ \ \` \> \# \+ \- \= \| \{ \} \. \!",
|
||||
r"\_ \* \[ \] \( \) \~ \\ \` \> \# \+ \- \= \| \{ \} \. \!",
|
||||
);
|
||||
}
|
||||
|
||||
|
|
|
|||
250
crates/teloxide/src/utils/render.rs
Normal file
250
crates/teloxide/src/utils/render.rs
Normal file
|
|
@ -0,0 +1,250 @@
|
|||
//! Utils for rendering HTML and Markdown output.
|
||||
|
||||
use teloxide_core::types::{MessageEntity, MessageEntityKind as MEK};
|
||||
|
||||
use tag::*;
|
||||
|
||||
pub use helper::RenderMessageTextHelper;
|
||||
|
||||
mod helper;
|
||||
mod html;
|
||||
mod markdown;
|
||||
mod tag;
|
||||
|
||||
/// Parses text and message entities to produce the final formatted output.
|
||||
#[derive(Clone, Eq, PartialEq)]
|
||||
pub struct Renderer<'a> {
|
||||
text: &'a str,
|
||||
tags: Vec<Tag<'a>>,
|
||||
}
|
||||
|
||||
impl<'a> Renderer<'a> {
|
||||
/// Creates a new [`Renderer`] instance with given text and message
|
||||
/// entities.
|
||||
///
|
||||
/// # Arguments
|
||||
///
|
||||
/// - `text`: The input text to be parsed.
|
||||
/// - `entities`: The message entities (formatting, links, etc.) to be
|
||||
/// applied to the text.
|
||||
#[must_use]
|
||||
pub fn new(text: &'a str, entities: &'a [MessageEntity]) -> Self {
|
||||
// get the needed size for the new tags that we want to parse from entities
|
||||
let needed_size: usize = entities
|
||||
.iter()
|
||||
.filter(|e| {
|
||||
matches!(
|
||||
e.kind,
|
||||
MEK::Bold
|
||||
| MEK::Blockquote
|
||||
| MEK::Italic
|
||||
| MEK::Underline
|
||||
| MEK::Strikethrough
|
||||
| MEK::Spoiler
|
||||
| MEK::Code
|
||||
| MEK::Pre { .. }
|
||||
| MEK::TextLink { .. }
|
||||
| MEK::TextMention { .. }
|
||||
| MEK::CustomEmoji { .. }
|
||||
)
|
||||
})
|
||||
.count()
|
||||
* 2; // 2 because we insert two tags for each entity
|
||||
|
||||
let mut tags = Vec::with_capacity(needed_size);
|
||||
|
||||
for (index, entity) in entities.iter().enumerate() {
|
||||
let kind = match &entity.kind {
|
||||
MEK::Bold => Kind::Bold,
|
||||
MEK::Blockquote => Kind::Blockquote,
|
||||
MEK::Italic => Kind::Italic,
|
||||
MEK::Underline => Kind::Underline,
|
||||
MEK::Strikethrough => Kind::Strikethrough,
|
||||
MEK::Spoiler => Kind::Spoiler,
|
||||
MEK::Code => Kind::Code,
|
||||
MEK::Pre { language } => Kind::Pre(language.as_ref().map(String::as_str)),
|
||||
MEK::TextLink { url } => Kind::TextLink(url.as_str()),
|
||||
MEK::TextMention { user } => Kind::TextMention(user.id.0),
|
||||
MEK::CustomEmoji { custom_emoji_id } => Kind::CustomEmoji(custom_emoji_id),
|
||||
_ => continue,
|
||||
};
|
||||
|
||||
// FIXME: maybe instead of clone store all the `kind`s in a seperate
|
||||
// vector and then just store the index here?
|
||||
tags.push(Tag::start(kind.clone(), entity.offset, index));
|
||||
tags.push(Tag::end(kind, entity.offset + entity.length, index));
|
||||
}
|
||||
|
||||
tags.sort_unstable();
|
||||
|
||||
Self { text, tags }
|
||||
}
|
||||
|
||||
/// Renders text with a given [`TagWriter`].
|
||||
///
|
||||
/// This method iterates through the text and the associated position tags
|
||||
/// and writes the text with the appropriate tags to a buffer, which is then
|
||||
/// returned as a `String`.
|
||||
///
|
||||
/// If input have no tags we just return the original text as-is.
|
||||
#[must_use]
|
||||
fn format(&self, writer: &TagWriter) -> String {
|
||||
if self.tags.is_empty() {
|
||||
return self.text.to_owned();
|
||||
}
|
||||
|
||||
let mut buffer =
|
||||
String::with_capacity(self.text.len() + writer.get_extra_size_for_tags(&self.tags));
|
||||
let mut tags = self.tags.iter();
|
||||
let mut current_tag = tags.next();
|
||||
|
||||
let mut prev_point = None;
|
||||
|
||||
for (idx, point) in self.text.encode_utf16().enumerate() {
|
||||
loop {
|
||||
match current_tag {
|
||||
Some(tag) if tag.offset == idx => {
|
||||
(writer.write_tag_fn)(tag, &mut buffer);
|
||||
current_tag = tags.next();
|
||||
}
|
||||
_ => break,
|
||||
}
|
||||
}
|
||||
|
||||
let ch = if let Some(previous) = prev_point.take() {
|
||||
char::decode_utf16([previous, point]).next().unwrap().unwrap()
|
||||
} else {
|
||||
match char::decode_utf16([point]).next().unwrap() {
|
||||
Ok(c) => c,
|
||||
Err(unpaired) => {
|
||||
prev_point = Some(unpaired.unpaired_surrogate());
|
||||
continue;
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
(writer.write_char_fn)(ch, &mut buffer);
|
||||
}
|
||||
|
||||
for tag in current_tag.into_iter().chain(tags) {
|
||||
(writer.write_tag_fn)(tag, &mut buffer);
|
||||
}
|
||||
|
||||
buffer
|
||||
}
|
||||
|
||||
/// Renders and returns the text as an **HTML-formatted** string.
|
||||
#[must_use]
|
||||
#[inline]
|
||||
pub fn as_html(&self) -> String {
|
||||
self.format(&html::HTML)
|
||||
}
|
||||
|
||||
/// Renders and returns the text as a **Markdown-formatted** string.
|
||||
#[must_use]
|
||||
#[inline]
|
||||
pub fn as_markdown(&self) -> String {
|
||||
self.format(&markdown::MARKDOWN)
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod test {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn test_render_simple() {
|
||||
let text = "Bold italic <underline_";
|
||||
let entities = vec![
|
||||
MessageEntity { kind: MEK::Bold, offset: 0, length: 4 },
|
||||
MessageEntity { kind: MEK::Italic, offset: 5, length: 6 },
|
||||
MessageEntity { kind: MEK::Underline, offset: 12, length: 10 },
|
||||
];
|
||||
|
||||
let render = Renderer::new(text, &entities);
|
||||
|
||||
assert_eq!(render.as_html(), "<b>Bold</b> <i>italic</i> <u><underline</u>_");
|
||||
assert_eq!(render.as_markdown(), "**Bold** _\ritalic_\r __\r<underline__\r\\_");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_render_pre_with_lang() {
|
||||
let text = "Some pre, normal and rusty code";
|
||||
let entities = vec![
|
||||
MessageEntity { kind: MEK::Pre { language: None }, offset: 5, length: 3 },
|
||||
MessageEntity { kind: MEK::Code, offset: 10, length: 6 },
|
||||
MessageEntity {
|
||||
kind: MEK::Pre { language: Some("rust".to_owned()) },
|
||||
offset: 21,
|
||||
length: 5,
|
||||
},
|
||||
];
|
||||
|
||||
let render = Renderer::new(text, &entities);
|
||||
|
||||
assert_eq!(
|
||||
render.as_html(),
|
||||
"Some <pre>pre</pre>, <code>normal</code> and <pre><code \
|
||||
class=\"language-rust\">rusty</code></pre> code",
|
||||
);
|
||||
assert_eq!(
|
||||
render.as_markdown(),
|
||||
"Some ```\npre```\n, `normal` and ```rust\nrusty```\n code",
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_render_nested() {
|
||||
let text = "Some bold both italics";
|
||||
let entities = vec![
|
||||
MessageEntity { kind: MEK::Bold, offset: 5, length: 9 },
|
||||
MessageEntity { kind: MEK::Italic, offset: 10, length: 12 },
|
||||
];
|
||||
|
||||
let render = Renderer::new(text, &entities);
|
||||
|
||||
assert_eq!(render.as_html(), "Some <b>bold <i>both</b> italics</i>");
|
||||
assert_eq!(render.as_markdown(), "Some **bold _\rboth** italics_\r");
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_render_complex() {
|
||||
let text = "Hi how are you?\nnested entities are cool\nIm in a Blockquote!";
|
||||
let entities = vec![
|
||||
MessageEntity { kind: MEK::Bold, offset: 0, length: 2 },
|
||||
MessageEntity { kind: MEK::Italic, offset: 3, length: 3 },
|
||||
MessageEntity { kind: MEK::Underline, offset: 7, length: 3 },
|
||||
MessageEntity { kind: MEK::Strikethrough, offset: 11, length: 3 },
|
||||
MessageEntity { kind: MEK::Bold, offset: 16, length: 1 },
|
||||
MessageEntity { kind: MEK::Bold, offset: 17, length: 5 },
|
||||
MessageEntity { kind: MEK::Underline, offset: 17, length: 4 },
|
||||
MessageEntity { kind: MEK::Strikethrough, offset: 17, length: 4 },
|
||||
MessageEntity {
|
||||
kind: MEK::TextLink { url: reqwest::Url::parse("https://t.me/").unwrap() },
|
||||
offset: 23,
|
||||
length: 8,
|
||||
},
|
||||
MessageEntity {
|
||||
kind: MEK::TextLink { url: reqwest::Url::parse("tg://user?id=1234567").unwrap() },
|
||||
offset: 32,
|
||||
length: 3,
|
||||
},
|
||||
MessageEntity { kind: MEK::Code, offset: 36, length: 4 },
|
||||
MessageEntity { kind: MEK::Blockquote, offset: 41, length: 19 },
|
||||
];
|
||||
|
||||
let render = Renderer::new(text, &entities);
|
||||
|
||||
assert_eq!(
|
||||
render.as_html(),
|
||||
"<b>Hi</b> <i>how</i> <u>are</u> <s>you</s>?\n<b>n</b><b><u><s>este</s></u>d</b> \
|
||||
<a href=\"https://t.me/\">entities</a> <a href=\"tg://user?id=1234567\">are</a> <code>cool</code>\n\
|
||||
<blockquote>Im in a Blockquote!</blockquote>"
|
||||
);
|
||||
assert_eq!(
|
||||
render.as_markdown(),
|
||||
"**Hi** _\rhow_\r __\rare__\r ~you~?\n**n****__\r~este~__\rd** [entities](https://t.me/) \
|
||||
[are](tg://user?id=1234567) `cool`\n>Im in a Blockquote\\!"
|
||||
);
|
||||
}
|
||||
}
|
||||
64
crates/teloxide/src/utils/render/helper.rs
Normal file
64
crates/teloxide/src/utils/render/helper.rs
Normal file
|
|
@ -0,0 +1,64 @@
|
|||
//! A helpful trait for rendering text/caption and entities back to HTML or
|
||||
//! Markdown.
|
||||
|
||||
use teloxide_core::types::Message;
|
||||
|
||||
use super::Renderer;
|
||||
|
||||
/// Generates HTML and Markdown representations of text and captions in a
|
||||
/// Telegram message.
|
||||
pub trait RenderMessageTextHelper {
|
||||
/// Returns the HTML representation of the message text, if the message
|
||||
/// contains text. This method will parse the text and any entities
|
||||
/// (such as bold, italic, links, etc.) and return the HTML-formatted
|
||||
/// string.
|
||||
#[must_use]
|
||||
fn html_text(&self) -> Option<String>;
|
||||
|
||||
/// Returns the Markdown representation of the message text, if the message
|
||||
/// contains text. This method will parse the text and any entities
|
||||
/// (such as bold, italic, links, etc.) and return the
|
||||
/// Markdown-formatted string.
|
||||
#[must_use]
|
||||
fn markdown_text(&self) -> Option<String>;
|
||||
|
||||
/// Returns the HTML representation of the message caption, if the message
|
||||
/// contains caption. This method will parse the caption and any
|
||||
/// entities (such as bold, italic, links, etc.) and return the
|
||||
/// HTML-formatted string.
|
||||
#[must_use]
|
||||
fn html_caption(&self) -> Option<String>;
|
||||
|
||||
/// Returns the Markdown representation of the message caption, if the
|
||||
/// message contains caption. This method will parse the caption and any
|
||||
/// entities (such as bold, italic, links, etc.) and return the
|
||||
/// Markdown-formatted string.
|
||||
#[must_use]
|
||||
fn markdown_caption(&self) -> Option<String>;
|
||||
}
|
||||
|
||||
impl RenderMessageTextHelper for Message {
|
||||
fn html_text(&self) -> Option<String> {
|
||||
self.text()
|
||||
.zip(self.entities())
|
||||
.map(|(text, entities)| Renderer::new(text, entities).as_html())
|
||||
}
|
||||
|
||||
fn markdown_text(&self) -> Option<String> {
|
||||
self.text()
|
||||
.zip(self.entities())
|
||||
.map(|(text, entities)| Renderer::new(text, entities).as_markdown())
|
||||
}
|
||||
|
||||
fn html_caption(&self) -> Option<String> {
|
||||
self.caption()
|
||||
.zip(self.caption_entities())
|
||||
.map(|(text, entities)| Renderer::new(text, entities).as_html())
|
||||
}
|
||||
|
||||
fn markdown_caption(&self) -> Option<String> {
|
||||
self.caption()
|
||||
.zip(self.caption_entities())
|
||||
.map(|(text, entities)| Renderer::new(text, entities).as_markdown())
|
||||
}
|
||||
}
|
||||
70
crates/teloxide/src/utils/render/html.rs
Normal file
70
crates/teloxide/src/utils/render/html.rs
Normal file
|
|
@ -0,0 +1,70 @@
|
|||
use std::fmt::Write;
|
||||
|
||||
use super::{ComplexTag, Kind, Place, SimpleTag, Tag, TagWriter};
|
||||
|
||||
pub static HTML: TagWriter = TagWriter {
|
||||
bold: SimpleTag::new("<b>", "</b>"),
|
||||
blockquote: SimpleTag::new("<blockquote>", "</blockquote>"),
|
||||
italic: SimpleTag::new("<i>", "</i>"),
|
||||
underline: SimpleTag::new("<u>", "</u>"),
|
||||
strikethrough: SimpleTag::new("<s>", "</s>"),
|
||||
spoiler: SimpleTag::new("<tg-spoiler>", "</tg-spoiler>"),
|
||||
code: SimpleTag::new("<code>", "</code>"),
|
||||
pre_no_lang: SimpleTag::new("<pre>", "</pre>"),
|
||||
pre: ComplexTag::new("<pre><code class=\"language-", "\">", "</code></pre>"),
|
||||
text_link: ComplexTag::new("<a href=\"", "\">", "</a>"),
|
||||
text_mention: ComplexTag::new("<a href=\"tg://user?id=", "\">", "</a>"),
|
||||
custom_emoji: ComplexTag::new("<tg-emoji emoji-id=\"", "\">", "</tg-emoji>"),
|
||||
write_tag_fn: write_tag,
|
||||
write_char_fn: write_char,
|
||||
};
|
||||
|
||||
fn write_tag(tag: &Tag, buf: &mut String) {
|
||||
match tag.kind {
|
||||
Kind::Bold => buf.push_str(HTML.bold.get_tag(tag.place)),
|
||||
Kind::Blockquote => buf.push_str(HTML.blockquote.get_tag(tag.place)),
|
||||
Kind::Italic => buf.push_str(HTML.italic.get_tag(tag.place)),
|
||||
Kind::Underline => buf.push_str(HTML.underline.get_tag(tag.place)),
|
||||
Kind::Strikethrough => buf.push_str(HTML.strikethrough.get_tag(tag.place)),
|
||||
Kind::Spoiler => buf.push_str(HTML.spoiler.get_tag(tag.place)),
|
||||
Kind::Code => buf.push_str(HTML.code.get_tag(tag.place)),
|
||||
Kind::Pre(lang) => match tag.place {
|
||||
Place::Start => match lang {
|
||||
Some(lang) => write!(buf, "{}{}{}", HTML.pre.start, lang, HTML.pre.middle).unwrap(),
|
||||
None => buf.push_str(HTML.pre_no_lang.start),
|
||||
},
|
||||
Place::End => buf.push_str(lang.map_or(HTML.pre_no_lang.end, |_| HTML.pre.end)),
|
||||
},
|
||||
Kind::TextLink(url) => match tag.place {
|
||||
Place::Start => {
|
||||
write!(buf, "{}{}{}", HTML.text_link.start, url, HTML.text_link.middle).unwrap()
|
||||
}
|
||||
Place::End => buf.push_str(HTML.text_link.end),
|
||||
},
|
||||
Kind::TextMention(id) => match tag.place {
|
||||
Place::Start => {
|
||||
write!(buf, "{}{}{}", HTML.text_mention.start, id, HTML.text_mention.middle)
|
||||
.unwrap()
|
||||
}
|
||||
Place::End => buf.push_str(HTML.text_mention.end),
|
||||
},
|
||||
Kind::CustomEmoji(custom_emoji_id) => match tag.place {
|
||||
Place::Start => write!(
|
||||
buf,
|
||||
"{}{}{}",
|
||||
HTML.custom_emoji.start, custom_emoji_id, HTML.custom_emoji.middle
|
||||
)
|
||||
.unwrap(),
|
||||
Place::End => buf.push_str(HTML.custom_emoji.end),
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
fn write_char(ch: char, buf: &mut String) {
|
||||
match ch {
|
||||
'&' => buf.push_str("&"),
|
||||
'<' => buf.push_str("<"),
|
||||
'>' => buf.push_str(">"),
|
||||
c => buf.push(c),
|
||||
}
|
||||
}
|
||||
73
crates/teloxide/src/utils/render/markdown.rs
Normal file
73
crates/teloxide/src/utils/render/markdown.rs
Normal file
|
|
@ -0,0 +1,73 @@
|
|||
use std::fmt::Write;
|
||||
|
||||
use crate::utils::markdown::ESCAPE_CHARS;
|
||||
|
||||
use super::{ComplexTag, Kind, Place, SimpleTag, Tag, TagWriter};
|
||||
|
||||
pub static MARKDOWN: TagWriter = TagWriter {
|
||||
bold: SimpleTag::new("**", "**"),
|
||||
blockquote: SimpleTag::new(">", ""),
|
||||
italic: SimpleTag::new("_\r", "_\r"),
|
||||
underline: SimpleTag::new("__\r", "__\r"),
|
||||
strikethrough: SimpleTag::new("~", "~"),
|
||||
spoiler: SimpleTag::new("||", "||"),
|
||||
code: SimpleTag::new("`", "`"),
|
||||
pre_no_lang: SimpleTag::new("```\n", "```\n"),
|
||||
pre: ComplexTag::new("```", "\n", "```\n"),
|
||||
text_link: ComplexTag::new("[", "](", ")"),
|
||||
text_mention: ComplexTag::new("[", "](tg://user?id=", ")"),
|
||||
custom_emoji: ComplexTag::new("[", "](tg://emoji?id=", ")"),
|
||||
write_tag_fn: write_tag,
|
||||
write_char_fn: write_char,
|
||||
};
|
||||
|
||||
fn write_tag(tag: &Tag, buf: &mut String) {
|
||||
match tag.kind {
|
||||
Kind::Bold => buf.push_str(MARKDOWN.bold.get_tag(tag.place)),
|
||||
Kind::Blockquote => buf.push_str(MARKDOWN.blockquote.get_tag(tag.place)),
|
||||
Kind::Italic => buf.push_str(MARKDOWN.italic.get_tag(tag.place)),
|
||||
Kind::Underline => buf.push_str(MARKDOWN.underline.get_tag(tag.place)),
|
||||
Kind::Strikethrough => buf.push_str(MARKDOWN.strikethrough.get_tag(tag.place)),
|
||||
Kind::Spoiler => buf.push_str(MARKDOWN.spoiler.get_tag(tag.place)),
|
||||
Kind::Code => buf.push_str(MARKDOWN.code.get_tag(tag.place)),
|
||||
Kind::Pre(lang) => match tag.place {
|
||||
Place::Start => match lang {
|
||||
Some(lang) => {
|
||||
write!(buf, "{}{}{}", MARKDOWN.pre.start, lang, MARKDOWN.pre.middle).unwrap()
|
||||
}
|
||||
None => buf.push_str(MARKDOWN.pre_no_lang.start),
|
||||
},
|
||||
Place::End => buf.push_str(lang.map_or(MARKDOWN.pre_no_lang.end, |_| MARKDOWN.pre.end)),
|
||||
},
|
||||
Kind::TextLink(url) => match tag.place {
|
||||
Place::Start => buf.push_str(MARKDOWN.text_link.start),
|
||||
Place::End => {
|
||||
write!(buf, "{}{}{}", MARKDOWN.text_link.middle, url, MARKDOWN.text_link.end)
|
||||
.unwrap()
|
||||
}
|
||||
},
|
||||
Kind::TextMention(id) => match tag.place {
|
||||
Place::Start => buf.push_str(MARKDOWN.text_mention.start),
|
||||
Place::End => {
|
||||
write!(buf, "{}{}{}", MARKDOWN.text_mention.middle, id, MARKDOWN.text_mention.end)
|
||||
.unwrap()
|
||||
}
|
||||
},
|
||||
Kind::CustomEmoji(custom_emoji_id) => match tag.place {
|
||||
Place::Start => buf.push_str(MARKDOWN.custom_emoji.start),
|
||||
Place::End => write!(
|
||||
buf,
|
||||
"{}{}{}",
|
||||
MARKDOWN.custom_emoji.middle, custom_emoji_id, MARKDOWN.custom_emoji.end
|
||||
)
|
||||
.unwrap(),
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
fn write_char(ch: char, buf: &mut String) {
|
||||
if ESCAPE_CHARS.contains(&ch) {
|
||||
buf.push('\\');
|
||||
}
|
||||
buf.push(ch);
|
||||
}
|
||||
155
crates/teloxide/src/utils/render/tag.rs
Normal file
155
crates/teloxide/src/utils/render/tag.rs
Normal file
|
|
@ -0,0 +1,155 @@
|
|||
use std::cmp::Ordering;
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct Tag<'a> {
|
||||
pub place: Place,
|
||||
pub kind: Kind<'a>,
|
||||
pub offset: usize,
|
||||
pub index: usize,
|
||||
}
|
||||
|
||||
impl<'a> Tag<'a> {
|
||||
#[inline(always)]
|
||||
pub const fn start(kind: Kind<'a>, offset: usize, index: usize) -> Self {
|
||||
Self { place: Place::Start, kind, offset, index }
|
||||
}
|
||||
|
||||
#[inline(always)]
|
||||
pub const fn end(kind: Kind<'a>, offset: usize, index: usize) -> Self {
|
||||
Self { place: Place::End, kind, offset, index }
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> Eq for Tag<'a> {}
|
||||
|
||||
impl<'a> PartialEq for Tag<'a> {
|
||||
fn eq(&self, other: &Self) -> bool {
|
||||
// We don't check kind here
|
||||
self.place == other.place && self.offset == other.offset && self.index == other.index
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> Ord for Tag<'a> {
|
||||
fn cmp(&self, other: &Self) -> Ordering {
|
||||
self.offset.cmp(&other.offset).then_with(|| self.place.cmp(&other.place)).then_with(|| {
|
||||
match other.place {
|
||||
Place::Start => self.index.cmp(&other.index),
|
||||
Place::End => other.index.cmp(&self.index),
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a> PartialOrd for Tag<'a> {
|
||||
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
|
||||
Some(self.cmp(other))
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
|
||||
pub enum Place {
|
||||
// HACK: `End` needs to be first because of the `Ord` Implementation.
|
||||
// the reason is when comparing tags we want the `End` to be first if the offset
|
||||
// is the same.
|
||||
End,
|
||||
Start,
|
||||
}
|
||||
|
||||
#[derive(Clone, PartialEq, Eq)]
|
||||
pub enum Kind<'a> {
|
||||
Bold,
|
||||
Blockquote,
|
||||
Italic,
|
||||
Underline,
|
||||
Strikethrough,
|
||||
Spoiler,
|
||||
Code,
|
||||
Pre(Option<&'a str>),
|
||||
TextLink(&'a str),
|
||||
TextMention(u64),
|
||||
CustomEmoji(&'a str),
|
||||
}
|
||||
|
||||
pub struct SimpleTag {
|
||||
pub start: &'static str,
|
||||
pub end: &'static str,
|
||||
}
|
||||
|
||||
impl SimpleTag {
|
||||
#[inline]
|
||||
pub const fn new(start: &'static str, end: &'static str) -> Self {
|
||||
Self { start, end }
|
||||
}
|
||||
|
||||
pub const fn get_tag(&self, place: Place) -> &'static str {
|
||||
match place {
|
||||
Place::Start => self.start,
|
||||
Place::End => self.end,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub struct ComplexTag {
|
||||
pub start: &'static str,
|
||||
pub middle: &'static str,
|
||||
pub end: &'static str,
|
||||
}
|
||||
|
||||
impl ComplexTag {
|
||||
#[inline]
|
||||
pub const fn new(start: &'static str, middle: &'static str, end: &'static str) -> Self {
|
||||
Self { start, middle, end }
|
||||
}
|
||||
}
|
||||
|
||||
pub struct TagWriter {
|
||||
pub bold: SimpleTag,
|
||||
pub blockquote: SimpleTag,
|
||||
pub italic: SimpleTag,
|
||||
pub underline: SimpleTag,
|
||||
pub strikethrough: SimpleTag,
|
||||
pub spoiler: SimpleTag,
|
||||
pub code: SimpleTag,
|
||||
pub pre_no_lang: SimpleTag,
|
||||
pub pre: ComplexTag,
|
||||
pub text_link: ComplexTag,
|
||||
pub text_mention: ComplexTag,
|
||||
pub custom_emoji: ComplexTag,
|
||||
pub write_tag_fn: fn(&Tag, buf: &mut String),
|
||||
pub write_char_fn: fn(char, buf: &mut String),
|
||||
}
|
||||
|
||||
impl TagWriter {
|
||||
pub fn get_extra_size_for_tags(&self, tags: &[Tag]) -> usize {
|
||||
tags.iter()
|
||||
.map(|tag| match tag.kind {
|
||||
Kind::Bold => self.bold.get_tag(tag.place).len(),
|
||||
Kind::Blockquote => self.blockquote.get_tag(tag.place).len(),
|
||||
Kind::Italic => self.italic.get_tag(tag.place).len(),
|
||||
Kind::Underline => self.underline.get_tag(tag.place).len(),
|
||||
Kind::Strikethrough => self.strikethrough.get_tag(tag.place).len(),
|
||||
Kind::Spoiler => self.spoiler.get_tag(tag.place).len(),
|
||||
Kind::Code => self.code.get_tag(tag.place).len(),
|
||||
Kind::Pre(lang) => match tag.place {
|
||||
Place::Start => lang
|
||||
.map_or(self.pre_no_lang.start.len(), |l| self.pre.start.len() + l.len()),
|
||||
Place::End => lang.map_or(self.pre_no_lang.end.len(), |_| {
|
||||
self.pre.middle.len() + self.pre.end.len()
|
||||
}),
|
||||
},
|
||||
Kind::TextLink(url) => match tag.place {
|
||||
Place::Start => self.text_link.start.len() + url.len(),
|
||||
Place::End => self.text_link.middle.len() + self.text_link.end.len(),
|
||||
},
|
||||
Kind::TextMention(id) => match tag.place {
|
||||
Place::Start => self.text_mention.start.len() + id.ilog10() as usize + 1,
|
||||
Place::End => self.text_mention.middle.len() + self.text_mention.end.len(),
|
||||
},
|
||||
Kind::CustomEmoji(custom_emoji_id) => match tag.place {
|
||||
Place::Start => self.custom_emoji.start.len() + custom_emoji_id.len(),
|
||||
Place::End => self.custom_emoji.middle.len() + self.custom_emoji.end.len(),
|
||||
},
|
||||
})
|
||||
.sum()
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue