Blogofile template for generating a index of posts for each category

category_index.mako

<%inherit file="_templates/site.mako" />

These are all the categories:

<ul>
  % for category, link in category_link_map.items():
  <li><a href="${link}">${category}</a></li>
  % endfor
</ul>

category_index_posts.mako

<%inherit file="_templates/site.mako" />

All the posts in the ${category} category:

<ul>
  % for post in posts:
  <li><a href="${post.permalink}">${post.title}</a></li>
  % endfor
</ul>

category_indexes.py

from blogofile.cache import bf

def run():
    category_post_map = generate_map()
    write_category_index(category_post_map)
    write_post_indexes(category_post_map)
    
def generate_map():
    # Generate a map of categories to posts
    category_post_map = {}
    for p in bf.posts:
        for c in p.categories:
            try:
                category_post_map[c.name].add(p)
            except KeyError:
                category_post_map[c.name] = set([p])
    return category_post_map

def category_url(category):
    return "/category_indexes/"+category.lower().replace(" ","-")

def write_category_index(category_post_map):
    """Write a page listing all the categories"""
    template = bf.writer.template_lookup.get_template("category_index.mako")
    template.output_encoding = "utf-8"
    category_link_map = {}
    for category in category_post_map.keys():
        category_link_map[category] = category_url(category)
    html = bf.writer.template_render(template, {
            "category_link_map" : category_link_map})
    path = bf.util.path_join(bf.writer.output_dir,"category_indexes")
    bf.util.mkdir(path)
    f = open(bf.util.path_join(path,"index.html"),"w")
    f.write(html)
    f.close()

def write_post_indexes(category_post_map):
    """Write a page for each category listing all the posts for each category"""
    template = bf.writer.template_lookup.get_template("category_index_posts.mako")
    template.output_encoding = "utf-8"
    
    for category, posts in category_post_map.items():
        html = bf.writer.template_render(template, {
                "posts" : posts,
                "category" : category})
        path = bf.util.path_join(
                bf.writer.output_dir,category_url(category))
        bf.util.mkdir(path)
        f = open(bf.util.path_join(path,"index.html"),"w")
        f.write(html)
        f.close()