From 6e9aaad11edc67a992f13286da2bff83b16c7453 Mon Sep 17 00:00:00 2001
From: Andreas Reis <andreas.reis@gmail.com>
Date: Wed, 14 Oct 2020 01:56:57 +0200
Subject: [PATCH] Add audio & object tags to media check

Makes the media check recognize files in <audio> and <object> tags as used.

They've been observed/supported by the WebView (checked: Anki, AnkiDroid) since just about forever already and are extremely useful if one knows a thing about web dev.
---
 pylib/anki/media.py | 14 +++++++++-----
 rslib/src/text.rs   | 10 +++++-----
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/pylib/anki/media.py b/pylib/anki/media.py
index 060dc847d..28abac172 100644
--- a/pylib/anki/media.py
+++ b/pylib/anki/media.py
@@ -34,13 +34,17 @@ def media_paths_from_col_path(col_path: str) -> Tuple[str, str]:
 class MediaManager:
 
     soundRegexps = [r"(?i)(\[sound:(?P<fname>[^]]+)\])"]
-    imgRegexps = [
+    htmlRegexps = [
         # src element quoted case
-        r"(?i)(<img[^>]* src=(?P<str>[\"'])(?P<fname>[^>]+?)(?P=str)[^>]*>)",
+        r"(?i)(<[img|audio][^>]* src=(?P<str>[\"'])(?P<fname>[^>]+?)(?P=str)[^>]*>)",
         # unquoted case
-        r"(?i)(<img[^>]* src=(?!['\"])(?P<fname>[^ >]+)[^>]*?>)",
+        r"(?i)(<[img|audio][^>]* src=(?!['\"])(?P<fname>[^ >]+)[^>]*?>)",
+        # src element quoted case
+        r"(?i)(<object[^>]* data=(?P<str>[\"'])(?P<fname>[^>]+?)(?P=str)[^>]*>)",
+        # unquoted case
+        r"(?i)(<object[^>]* data=(?!['\"])(?P<fname>[^ >]+)[^>]*?>)",
     ]
-    regexps = soundRegexps + imgRegexps
+    regexps = soundRegexps + htmlRegexps
 
     def __init__(self, col: anki.collection.Collection, server: bool) -> None:
         self.col = col.weakref()
@@ -173,7 +177,7 @@ class MediaManager:
                 return tag
             return tag.replace(fname, fn(fname))
 
-        for reg in self.imgRegexps:
+        for reg in self.htmlRegexps:
             string = re.sub(reg, repl, string)
         return string
 
diff --git a/rslib/src/text.rs b/rslib/src/text.rs
index 0793281c0..6d8fa5322 100644
--- a/rslib/src/text.rs
+++ b/rslib/src/text.rs
@@ -32,10 +32,10 @@ lazy_static! {
     ))
     .unwrap();
 
-    static ref IMG_TAG: Regex = Regex::new(
+    static ref HTML_TAGS: Regex = Regex::new(
         r#"(?xsi)
-            # the start of the image tag
-            <img[^>]+src=
+            # the start of the image, audio, or object tag
+            <\b(?:img|audio|object)\b[^>]+\b(?:src|data)\b=
             (?:
                     # 1: double-quoted filename
                     "
@@ -149,7 +149,7 @@ pub(crate) struct MediaRef<'a> {
 pub(crate) fn extract_media_refs(text: &str) -> Vec<MediaRef> {
     let mut out = vec![];
 
-    for caps in IMG_TAG.captures_iter(text) {
+    for caps in HTML_TAGS.captures_iter(text) {
         let fname = caps
             .get(1)
             .or_else(|| caps.get(2))
@@ -214,7 +214,7 @@ fn tts_tag_from_string<'a>(field_text: &'a str, args: &'a str) -> AVTag {
 }
 
 pub fn strip_html_preserving_image_filenames(html: &str) -> Cow<str> {
-    let without_fnames = IMG_TAG.replace_all(html, r" ${1}${2}${3} ");
+    let without_fnames = HTML_TAGS.replace_all(html, r" ${1}${2}${3} ");
     let without_html = HTML.replace_all(&without_fnames, "");
     // no changes?
     if let Cow::Borrowed(b) = without_html {