fix: compress images linked by native html <img> tag.

Signed-off-by: jackfiled <xcrenchangjun@outlook.com>

YaeBlog/Services/EssayScanService.cs

@@ -134,7 +134,8 @@ public partial class EssayScanService : IEssayScanService
                 }
                 catch (YamlException e)
                 {
-                    _logger.LogWarning("Failed to parser metadata from {name} due to {exception}, skipping", blog.BlogFile.Name, e);
+                    _logger.LogWarning("Failed to parser metadata from {name} due to {exception}, skipping",
+                        blog.BlogFile.Name, e);
                 }
             }
         });
@@ -146,7 +147,6 @@ public partial class EssayScanService : IEssayScanService
 
     private async Task<ImageResult> ScanImagePreBlog(DirectoryInfo directory, string blogName, string content)
     {
-        MatchCollection matchResult = ImagePattern.Matches(content);
         DirectoryInfo imageDirectory = new(Path.Combine(directory.FullName, blogName));
 
         Dictionary<string, bool> usedImages = imageDirectory.Exists
@@ -154,10 +154,15 @@ public partial class EssayScanService : IEssayScanService
             : [];
         List<FileInfo> notFoundImages = [];
 
-        foreach (Match match in matchResult)
-        {
-            string imageName = match.Groups[1].Value;
+        // 同时扫描markdown格式和HTML格式的图片
+        MatchCollection markdownMatchResult = MarkdownImagePattern.Matches(content);
+        MatchCollection htmlMatchResult = HtmlImagePattern.Matches(content);
 
+        IEnumerable<string> imageNames = from match in markdownMatchResult.Concat(htmlMatchResult)
+            select match.Groups[1].Value;
+
+        foreach (string imageName in imageNames)
+        {
             // 判断md文件中的图片名称中是否包含文件夹名称
             // 例如 blog-1/image.png 或者 image.png
             // 如果不带文件夹名称
@@ -204,7 +209,10 @@ public partial class EssayScanService : IEssayScanService
     }
 
     [GeneratedRegex(@"\!\[.*?\]\((.*?)\)")]
-    private static partial Regex ImagePattern { get; }
+    private static partial Regex MarkdownImagePattern { get; }
+
+    [GeneratedRegex("""<img\s[^>]*?src\s*=\s*["']([^"']*)["'][^>]*>""")]
+    private static partial Regex HtmlImagePattern { get; }
 
 
     private DirectoryInfo ValidateRootDirectory()