Updating langcode search and checking for if it's valid.

app.py

@@ -23,15 +23,29 @@ def get_path_to_wav_format(uploaded_file):
     return new_desired_path
 
 
-def get_langcode_for_allosaurus(input_code):
+def get_langcode_for_allosaurus(input_code, model):
   langcode = "ipa" # the default allosaurus recognizer
   description = "the default universal setting, not specific to any language"
+  
+  if not input_code:
+    return langcode, description
+    
+
+
   try:
     lang = langcodes.get(input_code)
-    langcode = lang.to_alpha3()
-    description = lang.display_name()
+    alpha3 = lang.to_alpha3()
+    if model.is_available(alpha3 ): # https://github.com/xinjli/allosaurus/blob/f5aa296dc97a90e3035f6cc0fd281cfb64536228/allosaurus/app.py#L57    
+      langcode = alpha3 
+      description = lang.display_name()
+      st.info(f"{langcode} is supported by Allosaurus}")
+    else:
+#      st.info(f"Could not find supported language for {input_code}")
+      st.error(f"Allosaurus doesn't recognize the language code {langcode}}. Perhaps try looking for [alternate codes](https://huggingface.co/spaces/cdleong/langcode-search). Or possibly it's just that there's no support for that particular language code. Proceeding with default setting")
+    
   except langcodes.LanguageTagError as e:
-    pass
+    st.error(f"langcodes library could not find a 3-letter ISO code for {input_code}. It may not be a valid code, try searching for [alternate codes](https://huggingface.co/spaces/cdleong/langcode-search). Proceeding with default setting"
+    
   return langcode, description 
   
   
@@ -39,11 +53,16 @@ def get_langcode_for_allosaurus(input_code):
 
 
 if __name__ == "__main__":
-  input_code = st.text_input("(optional) 2 or 3-letter ISO code for input language", max_chars=3)
-  langcode, description = get_langcode_for_allosaurus(input_code)
-  st.write(f"Instructing Allosaurus to recognize using language {langcode}. That is, {description}")
+  input_code = st.text_input("(optional) 2 or 3-letter ISO code for input language. 2-letter codes will be converted to 3-letter codes", max_chars=3)
+
+
+
   
   model = read_recognizer()
+  langcode, description = get_langcode_for_allosaurus(input_code)
+
+  st.write(f"Instructing Allosaurus to recognize using language {langcode}. That is, {description}")
+
   
   uploaded_files = st.file_uploader("Choose a file", type=[
                                                           ".wav",