Add filename regular expression matching to Sauce. #1183

src/General/Settings/Sauce.html

@@ -3,6 +3,7 @@
 <div>You can specify a display text by appending <code>;text:[text]</code> to the URL.</div>
 <div>You can specify the applicable boards by appending <code>;boards:[board1],[board2]</code>.</div>
 <div>You can specify the applicable file types by appending <code>;types:[extension1],[extension2]</code>.</div>
+<div>You can specify a regular expression the filename must match by appending <code>;regexp:[regular expression]</code>.</div>
 <ul>These parameters will be replaced by their corresponding values in the URL and displayed text:
   <li><code>%TURL</code>: Thumbnail URL.</li>
   <li><code>%URL</code>: Full image URL.</li>
@@ -12,6 +13,8 @@
   <li><code>%hMD5</code>: MD5 hash in hexadecimal.</li>
   <li><code>%name</code>: Original file name.</li>
   <li><code>%board</code>: Current board.</li>
+  <li><code>%$0</code>: The matched regular expression.</li>
+  <li><code>%$1</code>, <code>%$2</code>, and so on: Subexpressions within the matched regular expression.</li>
   <li><code>%%</code>, <code>%semi</code>: Literal <code>%</code> and <code>;</code>.</li>
 </ul>
 <textarea hidden name="sauces" class="field" spellcheck="false"></textarea>

src/Images/Sauce.coffee

@@ -19,13 +19,28 @@ Sauce =
   parseLink: (link) ->
     return null if not (link = link.trim())
     parts = {}
-    for part, i in link.split /;(?=(?:text|boards|types|sandbox):?)/
+    for part, i in link.split /;(?=(?:text|boards|types|regexp|sandbox):?)/
       if i is 0
         parts['url'] = part
       else
         m = part.match /^(\w*):?(.*)$/
         parts[m[1]] = m[2]
     parts['text'] or= parts['url'].match(/(\w+)\.\w+\//)?[1] or '?'
+    if 'regexp' of parts
+      try
+        if (regexp = parts['regexp'].match /^\/(.*)\/(\w*)$/)
+          parts['regexp'] = RegExp regexp[1], regexp[2]
+        else
+          parts['regexp'] = RegExp parts['regexp']
+      catch err
+        new Notice 'warning', [
+          $.tn "Invalid regexp for Sauce link:"
+          $.el 'br'
+          $.tn link
+          $.el 'br'
+          $.tn err.message
+        ], 60
+        return null
     parts
 
   createSauceLink: (link, post) ->
@@ -35,14 +50,19 @@ Sauce =
 
     return null unless !parts['boards'] or post.board.ID in parts['boards'].split ','
     return null unless !parts['types']  or ext           in parts['types'].split  ','
+    return null unless !parts['regexp'] or (matches = post.file.name.match parts['regexp'])
 
     skip = false
     for key in ['url', 'text']
-      parts[key] = parts[key].replace /%(T?URL|IMG|[sh]?MD5|board|name|%|semi)/g, (_, parameter) ->
-        type = Sauce.formatters[parameter] post, ext
-        if not type?
-          skip = true
-          return ''
+      parts[key] = parts[key].replace /%(T?URL|IMG|[sh]?MD5|board|name|%|semi|\$\d+)/g, (_, parameter) ->
+        if parameter[0] is '$'
+          return parameter unless matches
+          type = matches[parameter[1..]]
+        else
+          type = Sauce.formatters[parameter] post, ext
+          if not type?
+            skip = true
+            return ''
 
         if key is 'url' and parameter not in ['%', 'semi']
           type = JSON.stringify type if /^javascript:/i.test parts['url']