various bugfixes

app/src/main/java/ani/dantotsu/media/manga/MangaNameAdapter.kt

@@ -0,0 +1,20 @@
+package ani.dantotsu.media.manga
+
+import java.util.regex.Matcher
+import java.util.regex.Pattern
+
+class MangaNameAdapter {
+    companion object {
+        fun findChapterNumber(text: String): Float? {
+            val regex = "(chapter|chap|ch|c)[\\s:.\\-]*([\\d]+\\.?[\\d]*)"
+            val pattern: Pattern = Pattern.compile(regex, Pattern.CASE_INSENSITIVE)
+            val matcher: Matcher = pattern.matcher(text)
+
+            return if (matcher.find()) {
+                matcher.group(2)?.toFloat()
+            } else {
+                null
+            }
+        }
+    }
+}