196 lines
7 KiB
Python
196 lines
7 KiB
Python
# Copyright 2020 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import glob
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import re
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import os
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from . import config
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from . import util
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from collections import defaultdict
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from fuzzywuzzy import fuzz
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from operator import attrgetter
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RE_WIKILINKS = re.compile('\[\[(.*?)\]\]')
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FUZZ_FACTOR = 95
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# URIs are ids.
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# - In the case of nodes, their [[wikilink]].
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# - Example: 'foo', meaning the node that is rendered when you click on [[foo]] somewhere.
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# - In the case of subnodes, a relative path within the Agora.
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# - Example: 'garden/flancian/README.md', meaning an actual file called README.md.
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# - Note the example subnode above gets rendered in node [[README]], so fetching node with uri README would yield it (and others).
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# TODO: implement.
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class Graph:
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def __init__(self):
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# [[wikilink]] -> Node
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self.nodes = {}
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# node -> [n0, ..., nn] such that node has outlinks to the target list.
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self.edges = {}
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def addsubnode(self, subnode):
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if subnode.wikilink in self.nodes:
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G.nodes[subnode.wikilink].subnodes.append(subnode)
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else:
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G.nodes[subnode.wikilink] = Node(subnode.wikilink)
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G = Graph()
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class Node:
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"""Nodes map 1:1 to wikilinks.
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They resolve to a series of subnodes when being rendered (see below).
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It maps to a particular file in the Agora repository, stored (relative to
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the Agora root) in the attribute 'uri'."""
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def __init__(self, wikilink):
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# Use a node's URI as its identifier.
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# Subnodes are attached to the node matching their wikilink.
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# i.e. if two users contribute subnodes titled [[foo]], they both show up when querying node [[foo]].
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self.wikilink = wikilink
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self.uri = wikilink
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self.url = '/node/' + self.uri
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self.subnodes = []
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def size(self):
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return len(self.subnodes)
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class Subnode:
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"""A subnode is a note or media resource volunteered by a user of the Agora.
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It maps to a particular file in the Agora repository, stored (relative to
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the Agora root) in the attribute 'uri'."""
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def __init__(self, path):
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# Use a subnode's URI as its identifier.
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self.uri = path_to_uri(path)
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self.url = '/subnode/' + path_to_uri(path)
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# Subnodes are attached to the node matching their wikilink.
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# i.e. if two users contribute subnodes titled [[foo]], they both show up when querying node [[foo]].
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self.wikilink = util.canonical_wikilink(path_to_wikilink(path))
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self.user = path_to_user(path)
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with open(path) as f:
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self.content = f.read()
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self.outlinks = content_to_outlinks(self.content)
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self.node = self.wikilink
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# Initiate node for wikilink if this is the first subnode, append otherwise.
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G.addsubnode(self)
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def __eq__(self, other):
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# hack hack
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if fuzz.ratio(self.wikilink, other.wikilink) > FUZZ_FACTOR:
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return True
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else:
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return False
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def __sub__(self, other):
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# hack hack
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return 100-fuzz.ratio(self.wikilink, other.wikilink)
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def distance(self, other):
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# hack hack
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return 100-fuzz.ratio(self.wikilink, other.wikilink)
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class User:
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def __init__(self, user):
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self.uri = user
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self.url = '/user/' + self.uri
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def path_to_uri(path):
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return path.replace(config.AGORA_PATH + '/', '')
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def path_to_user(path):
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m = re.search('garden/(.+?)/', path)
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if m:
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return m.group(1)
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else:
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return 'agora'
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def path_to_wikilink(path):
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return os.path.splitext(os.path.basename(path))[0]
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def content_to_outlinks(content):
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# hack hack.
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match = RE_WIKILINKS.findall(content)
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if match:
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return [util.canonical_wikilink(m) for m in match]
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else:
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return []
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def all_subnodes():
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subnodes = [Subnode(f) for f in glob.glob(os.path.join(config.AGORA_PATH, '**/*.md'), recursive=True)]
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return sorted(subnodes, key=lambda x: x.uri.lower())
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def all_nodes(include_journals=True):
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# first we fetch all subnodes, put them in a dict {wikilink -> [subnode]}.
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# hack hack -- there's something in itertools better than this.
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wikilink_to_subnodes = defaultdict(list)
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for subnode in all_subnodes():
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wikilink_to_subnodes[subnode.wikilink].append(subnode)
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# then we iterate over its values and construct nodes for each list of subnodes.
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nodes = []
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for wikilink in wikilink_to_subnodes:
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node = Node(wikilink)
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node.subnodes = wikilink_to_subnodes[wikilink]
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nodes.append(node)
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# remove journals if so desired.
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if not include_journals:
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nodes = [node for node in nodes if not re.match('[0-9]+?-[0-9]+?-[0-9]+?', node.wikilink)]
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# TODO: experiment with other ranking.
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# return sorted(nodes, key=lambda x: -x.size())
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return sorted(nodes, key=lambda x: x.wikilink.lower())
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def all_users():
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# hack hack.
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users = os.listdir(os.path.join(config.AGORA_PATH, 'garden'))
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return sorted([User(u) for u in users], key=lambda x: x.uri.lower())
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def all_journals():
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# hack hack.
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nodes = all_nodes()
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nodes = [node for node in nodes if re.match('[0-9]+?-[0-9]+?-[0-9]+?', node.wikilink)]
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return sorted(nodes, key=attrgetter('wikilink'), reverse=True)
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def nodes_by_wikilink(wikilink):
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nodes = [node for node in all_nodes() if node.wikilink == wikilink]
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return nodes
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def subnodes_by_wikilink(wikilink, fuzzy_matching=True):
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if fuzzy_matching:
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# TODO
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subnodes = [subnode for subnode in all_subnodes() if fuzz.ratio(subnode.wikilink, wikilink) > FUZZ_FACTOR]
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else:
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subnodes = [subnode for subnode in all_subnodes() if subnode.wikilink == wikilink]
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return subnodes
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def search_subnodes(query):
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subnodes = [subnode for subnode in all_subnodes() if re.search(query, subnode.content)]
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return subnodes
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def subnodes_by_user(user):
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subnodes = [subnode for subnode in all_subnodes() if subnode.user == user]
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return subnodes
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def subnode_by_uri(uri):
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subnode = [subnode for subnode in all_subnodes() if subnode.uri == uri][0]
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return subnode
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def nodes_by_outlink(wikilink):
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nodes = [node for node in all_nodes() if wikilink in node.outlinks]
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return nodes
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def subnodes_by_outlink(wikilink):
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# This doesn't work. It matches too much/too little for some reason. Debug someday?
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# subnodes = [subnode for subnode in all_subnodes() if [wikilink for wikilink in subnode.outlinks if fuzz.ratio(subnode.wikilink, wikilink) > FUZZ_FACTOR]]
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subnodes = [subnode for subnode in all_subnodes() if util.canonical_wikilink(wikilink) in subnode.outlinks]
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return subnodes
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