Moving functions in block module to inc file

Question

I have searched everywhere for an answer to this question, and have found little to no help on the subject.

The closest question to my own would be this, but the answer for it is a bit different than what I'm looking for: How to move block functions into .inc file?

Here is my code for the most part (everything removed that wasn't necessary):

<?php

function custom_giggity_block_info(){
  $block['custom_giggity'] = array(
    'info' => t('Custom giggity'),
    'cache' => DRUPAL_NO_CACHE,
  );
  return $block;
}

function custom_giggity_block_view($delta = ''){
  $block = array();
  if($delta == 'custom_giggity'){
    $block['content'] = custom_giggity_contents($delta);
  }
  return $block;
}

function custom_giggity_contents($delta){
  //Code that generates what goes into $block['content']
  return $output;
}

And I need to use something like this, and don't know how to incorporate it:

function giggity_contents() {
  $items['giggity'] = array(
    'title' => "Giggity",
    'page callback' => "show_giggity", //or custom_giggity_contents ;)
    'access arguments' => array('access content'),
    'file' => 'giggity.inc',
    'type' => MENU_CALLBACK
  );
  return $items;
}

Now I realize that the second block of code there might completely off, but I'm just using it as an example as to what I need to accomplish.

Edit: So this is what I'd like to accomplish, but I'm not sure how the $items callbacks work. I took this piece of code from a hook_menu() and replaced it with giggity_contents.

<?php

function custom_giggity_block_info(){
  $block['custom_giggity'] = array(
    'info' => t('Custom giggity'),
    'cache' => DRUPAL_NO_CACHE,
  );
  return $block;
}

function custom_giggity_block_view($delta = ''){
  $block = array();
  if($delta == 'custom_giggity'){
    $block['content'] = giggity_contents($delta);
  }
  return $block;
}

function giggity_contents() {
  $items['giggity'] = array(
    'title' => "Giggity",
    'page callback' => "custom_giggity_contents",
    'access arguments' => array('access content'),
    'file' => 'giggity.inc',
    'type' => MENU_CALLBACK
  );
 return $items;
}

giggity.inc file:

 function custom_giggity_contents($delta){
  //Code that generates what goes into $block['content']
  return $output;
 }   

Answer 1

Like tenken said, use include_once at the top of the ".module" file like this:

<php
include_once drupal_get_path('module', 'module_name') . '/module_name.functions.inc';
?>