perf: collapse 3 regex calls per iteration in rewrite_urls loop to 1

Author: Algorithm5838

src/utils.rs

@@ -1090,10 +1090,11 @@ pub fn rewrite_urls(input_text: &str) -> String {
 
 	// Rewrite external media previews to Redlib
 	loop {
-		if REDDIT_PREVIEW_REGEX.find(&text1).is_none() {
+		let Some(caps) = REDDIT_PREVIEW_REGEX.captures(&text1) else {
 			return text1;
-		} else {
-			let formatted_url = format_url(REDDIT_PREVIEW_REGEX.find(&text1).map(|x| x.as_str()).unwrap_or_default());
+		};
+		{
+			let formatted_url = format_url(caps.get(0).map_or("", |m| m.as_str()));
 
 			let image_url = REDLIB_PREVIEW_LINK_REGEX.find(&formatted_url).map_or("", |m| m.as_str());
 			let mut image_caption = REDLIB_PREVIEW_TEXT_REGEX.find(&formatted_url).map_or("", |m| m.as_str());
@@ -1122,7 +1123,7 @@ pub fn rewrite_urls(input_text: &str) -> String {
 
 			/* In order to know if we're dealing with a normal or external preview we need to take a look at the first capture group of REDDIT_PREVIEW_REGEX
 			if it's preview we're dealing with something that needs /preview/pre, external-preview is /preview/external-pre, and i is /img */
-			let reddit_preview_regex_capture = REDDIT_PREVIEW_REGEX.captures(&text1).unwrap().get(1).map_or("", |m| m.as_str());
+			let reddit_preview_regex_capture = caps.get(1).map_or("", |m| m.as_str());
 
 			let _preview_type = match reddit_preview_regex_capture {
 				"preview" => "/preview/pre",