lexipython/src/article.py

205 lines
7.4 KiB
Python

import os
import sys
import re
import src.utils as utils
class LexiconArticle:
"""
A Lexicon article and its metadata.
Members:
player string: the player of the article
turn integer: the turn the article was written for
title string: the article title
title_filesafe string: the title, escaped, used for filenames
content string: the HTML content, with citations replaced by format hooks
citations dict mapping format hook string to tuple of link alias and link target title
wcites list: titles of written articles cited
pcites list: titles of phantom articles cited
citedby list: titles of articles that cite this
The last three are filled in by populate().
"""
def __init__(self, player, turn, title, content, citations):
"""
Creates a LexiconArticle object with the given parameters.
"""
self.player = player
self.turn = turn
self.title = title
self.title_filesafe = utils.titleescape(title)
self.content = content
self.citations = citations
self.wcites = set()
self.pcites = set()
self.citedby = set()
@staticmethod
def from_file_raw(raw_content):
"""
Parses the contents of a Lexipython source file into a LexiconArticle
object. If the source file is malformed, returns None.
"""
headers = raw_content.split('\n', 3)
if len(headers) != 4:
print("Header read error")
return None
player_header, turn_header, title_header, content_raw = headers
# Validate and sanitize the player header
if not player_header.startswith("# Player:"):
print("Player header missing or corrupted")
return None
player = player_header[9:].strip()
# Validate and sanitize the turn header
if not turn_header.startswith("# Turn:"):
print("Turn header missing or corrupted")
return None
turn = None
try:
turn = int(turn_header[7:].strip())
except:
print("Turn header error")
return None
# Validate and sanitize the title header
if not title_header.startswith("# Title:"):
print("Title header missing or corrupted")
return None
title = utils.titlecase(title_header[8:])
# Parse the content and extract citations
paras = re.split("\n\n+", content_raw.strip())
content = ""
citations = {}
format_id = 1
if not paras:
print("No content")
for para in paras:
# Escape angle brackets
para = re.sub("<", "&lt;", para)
para = re.sub(">", "&gt;", para)
# Escape curly braces
para = re.sub("{", "&#123;", para)
para = re.sub("}", "&#125;", para)
# Replace bold and italic marks with tags
para = re.sub(r"//([^/]+)//", r"<i>\1</i>", para)
para = re.sub(r"\*\*([^*]+)\*\*", r"<b>\1</b>", para)
# Replace \\LF with <br>LF
para = re.sub(r"\\\\\n", "<br>\n", para)
# Abstract citations into the citation record
link_match = re.search(r"\[\[(([^|\[\]]+)\|)?([^|\[\]]+)\]\]", para)
while link_match:
# Identify the citation text and cited article
cite_text = link_match.group(2) if link_match.group(2) else link_match.group(3)
cite_title = utils.titlecase(re.sub(r"\s+", " ", link_match.group(3)))
# Record the citation
citations["c"+str(format_id)] = (cite_text, cite_title)
# Stitch the format id in place of the citation
para = para[:link_match.start(0)] + "{c"+str(format_id)+"}" + para[link_match.end(0):]
format_id += 1 # Increment to the next format citation
link_match = re.search(r"\[\[(([^|\[\]]+)\|)?([^|\[\]]+)\]\]", para)
# Convert signature to right-aligned
if para[:1] == '~':
para = "<hr><span class=\"signature\"><p>" + para[1:] + "</p></span>\n"
else:
para = "<p>" + para + "</p>\n"
content += para
return LexiconArticle(player, turn, title, content, citations)
@staticmethod
def parse_from_directory(directory):
"""
Reads and parses each source file in the given directory.
Input: directory, the path to the folder to read
Output: a list of parsed articles
"""
articles = []
print("Reading source files from", directory)
for filename in os.listdir(directory):
path = os.path.join(directory, filename)
# Read only .txt files
if filename[-4:] == ".txt":
print(" Parsing", filename)
with open(path, "r", encoding="utf8") as src_file:
raw = src_file.read()
article = LexiconArticle.from_file_raw(raw)
if article is None:
print(" ERROR")
else:
print(" success:", article.title)
articles.append(article)
return articles
@staticmethod
def populate(lexicon_articles):
"""
Given a list of lexicon articles, fills out citation information
for each article and creates phantom pages for missing articles.
"""
article_by_title = {article.title : article for article in lexicon_articles}
# Determine all articles that exist or should exist
extant_titles = set([citation[1] for article in lexicon_articles for citation in article.citations])
# Interlink all citations
for article in lexicon_articles:
for cite_tuple in article.citations.values():
target = cite_tuple[1]
# Create article objects for phantom citations
if target not in article_by_title:
article_by_title[target] = LexiconArticle(None, sys.maxsize, target, "<p><i>This entry hasn't been written yet.</i></p>", {})
# Interlink citations
if article_by_title[target].player is None:
article.pcites.add(target)
else:
article.wcites.add(target)
article_by_title[target].citedby.add(article.title)
return list(article_by_title.values())
def build_default_content(self):
"""
Formats citations into the article content as normal HTML links
and returns the result.
"""
format_map = {
format_id: "<a href=\"{1}.html\"{2}>{0}</a>".format(
cite_tuple[0], utils.titleescape(cite_tuple[1]),
"" if cite_tuple[1] in self.wcites else " class=\"phantom\"")
for format_id, cite_tuple in self.citations.items()
}
return self.content.format(**format_map)
def build_default_citeblock(self, prev_article, next_article):
"""
Builds the citeblock content HTML for use in regular article pages.
For each defined target, links the target page as Previous or Next.
"""
citeblock = "<div class=\"content citeblock\">\n"
# Prev/next links
if next_article is not None:
citeblock += "<p style=\"float:right\"><a href=\"{}.html\"{}>Next &#8594;</a></p>\n".format(
next_article.title_filesafe, " class=\"phantom\"" if next_article.player is None else "")
if prev_article is not None:
citeblock += "<p><a href=\"{}.html\"{}>&#8592; Previous</a></p>\n".format(
prev_article.title_filesafe, " class=\"phantom\"" if prev_article.player is None else "")
if next_article is None and prev_article is None:
citeblock += "<p>&nbsp;</p>\n"
# Citations
cites_links = [
"<a href=\"{1}.html\"{2}>{0}</a>".format(
title, utils.titleescape(title),
"" if title in self.wcites else " class=\"phantom\"")
for title in sorted(
self.wcites | self.pcites,
key=lambda t: utils.titlesort(t))]
cites_str = " | ".join(cites_links)
if len(cites_str) < 1: cites_str = "&mdash;"
citeblock += "<p>Citations: {}</p>\n".format(cites_str)
# Citedby
citedby_links = [
"<a href=\"{1}.html\">{0}</a>".format(
title, utils.titleescape(title))
for title in sorted(
self.citedby,
key=lambda t: utils.titlesort(t))]
citedby_str = " | ".join(citedby_links)
if len(citedby_str) < 1: citedby_str = "&mdash;"
citeblock += "<p>Cited by: {}</p>\n</div>\n".format(citedby_str)
return citeblock