forked from expo/troggle
179 lines
7.5 KiB
Python
179 lines
7.5 KiB
Python
from django.conf import settings
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import random, re, logging
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from core.models import CaveDescription
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def weighted_choice(lst):
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n = random.uniform(0,1)
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for item, weight in lst:
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if n < weight:
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break
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n = n - weight
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return item
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def randomLogbookSentence():
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from troggle.core.models import LogbookEntry
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randSent={}
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# needs to handle empty logbooks without crashing
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#Choose a random logbook entry
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randSent['entry']=LogbookEntry.objects.order_by('?')[0]
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#Choose again if there are no sentances (this happens if it is a placeholder entry)
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while len(re.findall('[A-Z].*?\.',randSent['entry'].text))==0:
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randSent['entry']=LogbookEntry.objects.order_by('?')[0]
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#Choose a random sentence from that entry. Store the sentence as randSent['sentence'], and the number of that sentence in the entry as randSent['number']
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sentenceList=re.findall('[A-Z].*?\.',randSent['entry'].text)
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randSent['number']=random.randrange(0,len(sentenceList))
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randSent['sentence']=sentenceList[randSent['number']]
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return randSent
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def save_carefully(objectType, lookupAttribs={}, nonLookupAttribs={}):
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"""Looks up instance using lookupAttribs and carries out the following:
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-if instance does not exist in DB: add instance to DB, return (new instance, True)
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-if instance exists in DB and was modified using Troggle: do nothing, return (existing instance, False)
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-if instance exists in DB and was not modified using Troggle: overwrite instance, return (instance, False)
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The checking is accomplished using Django's get_or_create and the new_since_parsing boolean field
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defined in core.models.TroggleModel.
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"""
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instance, created=objectType.objects.get_or_create(defaults=nonLookupAttribs, **lookupAttribs)
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if not created and not instance.new_since_parsing:
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for k, v in nonLookupAttribs.items(): #overwrite the existing attributes from the logbook text (except date and title)
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setattr(instance, k, v)
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instance.save()
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if created:
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logging.info(str(instance) + ' was just added to the database for the first time. \n')
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if not created and instance.new_since_parsing:
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logging.info(str(instance) + " has been modified using Troggle, so the current script left it as is. \n")
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if not created and not instance.new_since_parsing:
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logging.info(str(instance) + " existed in the database unchanged since last parse. It was overwritten by the current script. \n")
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return (instance, created)
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def render_with_context(req, *args, **kwargs):
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"""this is the snippet from http://www.djangosnippets.org/snippets/3/
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Django uses Context, not RequestContext when you call render_to_response.
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We always want to use RequestContext, so that django adds the context from
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settings.TEMPLATE_CONTEXT_PROCESSORS. This way we automatically get
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necessary settings variables passed to each template. So we use a custom
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method, render_response instead of render_to_response. Hopefully future
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Django releases will make this unnecessary."""
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from django.shortcuts import render_to_response
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from django.template import RequestContext
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kwargs['context_instance'] = RequestContext(req)
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return render_to_response(*args, **kwargs)
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re_body = re.compile(r"\<body[^>]*\>(.*)\</body\>", re.DOTALL)
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re_title = re.compile(r"\<title[^>]*\>(.*)\</title\>", re.DOTALL)
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def get_html_body(text):
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return get_single_match(re_body, text)
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def get_html_title(text):
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return get_single_match(re_title, text)
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def get_single_match(regex, text):
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match = regex.search(text)
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if match:
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return match.groups()[0]
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else:
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return None
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def href_to_wikilinks(matchobj):
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"""
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Given an html link, checks for possible valid wikilinks.
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Returns the first valid wikilink. Valid means the target
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object actually exists.
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"""
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res=CaveDescription.objects.filter(long_name__icontains=matchobj.groupdict()['text'])
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if res and res[0]:
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return r'[[cavedescription:'+res[0].short_name+'|'+res[0].long_name+']]'
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else:
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return matchobj.group()
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#except:
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#print 'fail'
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re_subs = [(re.compile(r"\<b[^>]*\>(.*?)\</b\>", re.DOTALL), r"'''\1'''"),
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(re.compile(r"\<i\>(.*?)\</i\>", re.DOTALL), r"''\1''"),
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(re.compile(r"\<h1[^>]*\>(.*?)\</h1\>", re.DOTALL), r"=\1="),
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(re.compile(r"\<h2[^>]*\>(.*?)\</h2\>", re.DOTALL), r"==\1=="),
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(re.compile(r"\<h3[^>]*\>(.*?)\</h3\>", re.DOTALL), r"===\1==="),
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(re.compile(r"\<h4[^>]*\>(.*?)\</h4\>", re.DOTALL), r"====\1===="),
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(re.compile(r"\<h5[^>]*\>(.*?)\</h5\>", re.DOTALL), r"=====\1====="),
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(re.compile(r"\<h6[^>]*\>(.*?)\</h6\>", re.DOTALL), r"======\1======"),
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(re.compile(r'(<a href="?(?P<target>.*)"?>)?<img class="?(?P<class>\w*)"? src="?t/?(?P<source>[\w/\.]*)"?(?P<rest>></img>|\s/>(</a>)?)', re.DOTALL),r'[[display:\g<class> photo:\g<source>]]'), #
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(re.compile(r"\<a\s+id=['\"]([^'\"]*)['\"]\s*\>(.*?)\</a\>", re.DOTALL), r"[[subcave:\1|\2]]"), #assumes that all links with id attributes are subcaves. Not great.
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#interpage link needed
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(re.compile(r"\<a\s+href=['\"]#([^'\"]*)['\"]\s*\>(.*?)\</a\>", re.DOTALL), r"[[cavedescription:\1|\2]]"), #assumes that all links with target ids are cave descriptions. Not great.
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(re.compile(r"\[\<a\s+href=['\"][^'\"]*['\"]\s+id=['\"][^'\"]*['\"]\s*\>([^\s]*).*?\</a\>\]", re.DOTALL), r"[[qm:\1]]"),
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(re.compile(r'<a\shref="?(?P<target>.*)"?>(?P<text>.*)</a>'),href_to_wikilinks),
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]
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def html_to_wiki(text, codec = "utf-8"):
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if type(text) == str:
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text = unicode(text, codec)
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text = re.sub("</p>", r"", text)
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text = re.sub("<p>$", r"", text)
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text = re.sub("<p>", r"\n\n", text)
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out = ""
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lists = ""
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#lists
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while text:
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mstar = re.match("^(.*?)<ul[^>]*>\s*<li[^>]*>(.*?)</li>(.*)$", text, re.DOTALL)
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munstar = re.match("^(\s*)</ul>(.*)$", text, re.DOTALL)
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mhash = re.match("^(.*?)<ol[^>]*>\s*<li[^>]*>(.*?)</li>(.*)$", text, re.DOTALL)
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munhash = re.match("^(\s*)</ol>(.*)$", text, re.DOTALL)
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mitem = re.match("^(\s*)<li[^>]*>(.*?)</li>(.*)$", text, re.DOTALL)
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ms = [len(m.groups()[0]) for m in [mstar, munstar, mhash, munhash, mitem] if m]
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def min_(i, l):
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try:
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v = i.groups()[0]
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l.remove(len(v))
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return len(v) < min(l, 1000000000)
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except:
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return False
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if min_(mstar, ms):
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lists += "*"
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pre, val, post = mstar.groups()
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out += pre + "\n" + lists + " " + val
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text = post
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elif min_(mhash, ms):
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lists += "#"
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pre, val, post = mhash.groups()
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out += pre + "\n" + lists + " " + val
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text = post
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elif min_(mitem, ms):
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pre, val, post = mitem.groups()
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out += "\n" + lists + " " + val
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text = post
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elif min_(munstar, ms):
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lists = lists[:-1]
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text = munstar.groups()[1]
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elif min_(munhash, ms):
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lists.pop()
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text = munhash.groups()[1]
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else:
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out += text
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text = ""
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#substitutions
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for regex, repl in re_subs:
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out = regex.sub(repl, out)
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return out
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