Markdown Viewer
---------------

::

  import os
  import streamlit as st

Print banner.

::

  @st.cache_data
  def print_banner():
    print("""                                                    
                   .___              .__                        
        _____    __| _/        ___  _|__| ______  _  __         
       /     \\  / __ |  ______ \\  \\/ /  |/ __ \\ \\/ \\/ /   
      |  Y Y  \\/ /_/ | /_____/  \\   /|  \\  ___/\\     /      
      |__|_|  /\\____ |           \\_/ |__|\\___  >\\/\\_/      
            \\/      \\/                       \\/              
                                                                                        
    """)
    return 1

  print_banner()

Find all files in the current directory that have a `.md` extension. These files might contain text generated by large language models. If a particular `.md` file is a response to a specific question, that question will be stored in a separate file with the same base name but a `.q.md` extension. Do not include any `.q.md` files in the final list of files.

::

  md_files = [f for f in os.listdir('.') if f.endswith('.md') and not f.endswith('.q.md')]

Sort files based on their modification time

::

  md_files.sort(key=os.path.getmtime, reverse=True)

Create radio buttons to select a file

::

  selected_file = st.sidebar.radio("Select markdown file:", md_files)

Adds a prefix to each line of a multi-line string.

::

  def prefix_lines(query, prefix):
      lines = query.splitlines()
      prefixed_lines = [prefix + line for line in lines]
      return "\n".join(prefixed_lines)
    
Check if query file exists.

::

  query_file_path = selected_file[:-3] + ".q.md"
  if os.path.exists(query_file_path):
      with open(query_file_path, 'r', encoding='utf-8') as file:
          query = file.read()
      st.write(prefix_lines(query, "> "))     
      st.write("---");

Read the contents of selected file

::

  with open(selected_file, 'r', encoding='utf-8') as file:
      md_text = file.read()
    
Display the contents of the file that has been selected.

::
    
  st.write(md_text)