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from collections import defaultdict
from docutils.parsers.rst import directives
from sphinx import addnodes
from sphinx.directives import ObjectDescription
from sphinx.domains import Domain, Index
from sphinx.roles import XRefRole
from sphinx.util.nodes import make_refnode
class RecipeDirective(ObjectDescription):
"""A custom directive that describes a recipe."""
has_content = True
required_arguments = 1
option_spec = {
'contains': directives.unchanged_required,
}
def handle_signature(self, sig, signode):
signode += addnodes.desc_name(text=sig)
return sig
def add_target_and_index(self, name_cls, sig, signode):
signode['ids'].append('recipe' + '-' + sig)
if 'contains' in self.options:
ingredients = [
x.strip() for x in self.options.get('contains').split(',')]
recipes = self.env.get_domain('recipe')
recipes.add_recipe(sig, ingredients)
class IngredientIndex(Index):
"""A custom index that creates an ingredient matrix."""
name = 'ingredient'
localname = 'Ingredient Index'
shortname = 'Ingredient'
def generate(self, docnames=None):
content = defaultdict(list)
recipes = {name: (dispname, typ, docname, anchor)
for name, dispname, typ, docname, anchor, _
in self.domain.get_objects()}
recipe_ingredients = self.domain.data['recipe_ingredients']
ingredient_recipes = defaultdict(list)
# flip from recipe_ingredients to ingredient_recipes
for recipe_name, ingredients in recipe_ingredients.items():
for ingredient in ingredients:
ingredient_recipes[ingredient].append(recipe_name)
# convert the mapping of ingredient to recipes to produce the expected
# output, shown below, using the ingredient name as a key to group
#
# name, subtype, docname, anchor, extra, qualifier, description
for ingredient, recipe_names in ingredient_recipes.items():
for recipe_name in recipe_names:
dispname, typ, docname, anchor = recipes[recipe_name]
content[ingredient].append(
(dispname, 0, docname, anchor, docname, '', typ))
# convert the dict to the sorted list of tuples expected
content = sorted(content.items())
return content, True
class RecipeIndex(Index):
"""A custom index that creates an recipe matrix."""
name = 'recipe'
localname = 'Recipe Index'
shortname = 'Recipe'
def generate(self, docnames=None):
content = defaultdict(list)
# sort the list of recipes in alphabetical order
recipes = self.domain.get_objects()
recipes = sorted(recipes, key=lambda recipe: recipe[0])
# generate the expected output, shown below, from the above using the
# first letter of the recipe as a key to group thing
#
# name, subtype, docname, anchor, extra, qualifier, description
for _name, dispname, typ, docname, anchor, _priority in recipes:
content[dispname[0].lower()].append(
(dispname, 0, docname, anchor, docname, '', typ))
# convert the dict to the sorted list of tuples expected
content = sorted(content.items())
return content, True
class RecipeDomain(Domain):
name = 'recipe'
label = 'Recipe Sample'
roles = {
'ref': XRefRole(),
}
directives = {
'recipe': RecipeDirective,
}
indices = {
RecipeIndex,
IngredientIndex,
}
initial_data = {
'recipes': [], # object list
'recipe_ingredients': {}, # name -> object
}
def get_full_qualified_name(self, node):
return f'recipe.{node.arguments[0]}'
def get_objects(self):
yield from self.data['recipes']
def resolve_xref(self, env, fromdocname, builder, typ, target, node,
contnode):
match = [(docname, anchor)
for name, sig, typ, docname, anchor, prio
in self.get_objects() if sig == target]
if len(match) > 0:
todocname = match[0][0]
targ = match[0][1]
return make_refnode(builder, fromdocname, todocname, targ,
contnode, targ)
else:
print('Awww, found nothing')
return None
def add_recipe(self, signature, ingredients):
"""Add a new recipe to the domain."""
name = f'recipe.{signature}'
anchor = f'recipe-{signature}'
self.data['recipe_ingredients'][name] = ingredients
# name, dispname, type, docname, anchor, priority
self.data['recipes'].append(
(name, signature, 'Recipe', self.env.docname, anchor, 0))
def setup(app):
app.add_domain(RecipeDomain)
return {
'version': '0.1',
'parallel_read_safe': True,
'parallel_write_safe': True,
}
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