Use `ellipse` crate for truncation

Cargo.lock

@@ -210,6 +210,7 @@ name = "dircord"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "ellipse",
  "fancy-regex",
  "irc",
  "lazy_static",
@@ -222,6 +223,15 @@ dependencies = [
  "vergen",
 ]
 
+[[package]]
+name = "ellipse"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1835a82a08e5c9393639e7cf99786a65af71f7fa9df7c91a519f2d52e6fa052d"
+dependencies = [
+ "unicode-segmentation",
+]
+
 [[package]]
 name = "encoding"
 version = "0.2.33"
@@ -1617,6 +1627,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e8820f5d777f6224dc4be3632222971ac30164d4a258d595640799554ebfd99"
+
 [[package]]
 name = "unicode-width"
 version = "0.1.9"

Cargo.toml

@@ -14,6 +14,7 @@ lazy_static = "1.4.0"
 pulldown-cmark = "0.9.1"
 fancy-regex = "0.10.0"
 tokio-stream = "0.1.9"
+ellipse = "0.2.0"
 
 [dependencies.tokio]
 version = "1.20.0"

src/discord_irc.rs

@@ -1,6 +1,7 @@
 use crate::{
     regex, ChannelMappingKey, MembersKey, OptionReplacer, OptionStringKey, SenderKey, UserIdKey,
 };
+use ellipse::Ellipse;
 use fancy_regex::{Captures, Replacer};
 use pulldown_cmark::Parser;
 use serenity::{
@@ -150,7 +151,7 @@ impl EventHandler for Handler {
         {
             if let Ok(mut reply) = channel_id.message(&ctx, message_id).await {
                 reply.guild_id = guild_id; // lmao
-                let (reply_prefix, reply_content_limit) = create_prefix(&reply, true, &ctx).await;
+                let (reply_prefix, _) = create_prefix(&reply, true, &ctx).await;
 
                 let mut content = reply.content;
                 content = content.replace("\r\n", " "); // just in case
@@ -160,11 +161,7 @@ impl EventHandler for Handler {
 
                 content = discord_to_irc_processing(&content, &**members_lock, &ctx, &roles).await;
 
-                let to_send = if content.len() > reply_content_limit {
-                    format!("{}...", &content[..reply_content_limit - 3])
-                } else {
-                    content
-                };
+                let to_send = (&*content).truncate_ellipse(40); // limit taken from discord
 
                 sender
                     .send_privmsg(channel, &format!("{}{}", reply_prefix, to_send))