forked from vivekdurai/judis-re
/
supremecourt.py
227 lines (177 loc) · 7.7 KB
/
supremecourt.py
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import os
import re
import string
import tempfile
import utils
class SupremeCourt(utils.BaseCourt):
def __init__(self, name, rawdir, metadir, statsdir, updateMeta = False):
utils.BaseCourt.__init__(self, name, rawdir, metadir, statsdir, updateMeta)
self.cookiefile = tempfile.NamedTemporaryFile()
self.webformUrl = 'http://judis.nic.in/supremecourt/Chrseq.aspx'
self.dateqryUrl = 'http://judis.nic.in/supremecourt/DateQry.aspx'
self.dataTypes = ['A']
self.statevalNames = ['__VIEWSTATE']
def date_postdata(self, dateobj, dataType):
if dateobj.month < 10:
mnth = '0%d' % dateobj.month
else:
mnth = '%d' % dateobj.month
if dateobj.day < 10:
day = '0%d' % dateobj.day
else:
day = '%d' % dateobj.day
postdata = self.state_data()
postdata.extend(
[ ('ddlday1', day), ('ddlmonth1', mnth),\
('ddlyear1', dateobj.year), ('ddlday2', day), \
('ddlmonth2', mnth),('ddlyear2', dateobj.year),\
('ddlreport', dataType), ('button', 'Submit')\
])
return postdata
def download_oneday(self, relpath, dateobj):
newdls = []
for dataType in self.dataTypes:
self.stateval = self.get_stateval(self.dateqryUrl)
if not self.stateval:
self.logger.error(u'No stateval for date %s' % dateobj)
postdata = self.date_postdata(dateobj, dataType)
webpage = self.download_webpage(postdata, self.dateqryUrl)
newdls.extend(self.datequery_result(webpage, relpath, 1, dateobj))
return newdls
def extract_links(self, prsdobj, pagenum):
linkdict = {'docs': []}
trs = prsdobj.findAll('tr')
for tr in trs:
pageblock, nextlink = utils.check_next_page(tr, pagenum)
if nextlink:
linkdict['next'] = nextlink
elif not pageblock:
link = self.get_judgment_info(tr)
if link:
linkdict['docs'].append(link)
return linkdict
def save_meta_tags(self, metapath, judgedict, dateobj):
tagdict = {}
if judgedict.has_key('title'):
title = judgedict['title']
tagdict['title'] = title
reobj = re.search('( vs | vs\.)', title, re.IGNORECASE)
if reobj:
if reobj.start() > 1:
petitioner = title[:reobj.start()]
tagdict['petitioner'] = petitioner
if reobj.end() + 1 < len(title):
respondent = title[reobj.end() + 1:]
tagdict['respondent'] = respondent
if judgedict.has_key('bench'):
bench = judgedict['bench'].split(',')
if len(bench) > 0:
benchdict = {}
benchdict['name'] = []
for judge in bench:
benchdict['name'].append(judge)
tagdict['bench'] = benchdict
tagdict['date'] = utils.date_to_xml(dateobj)
utils.print_tag_file(metapath, tagdict)
def get_judgment_info(self, tr):
judgedict = {}
link = tr.find('a')
if link:
title = utils.get_tag_contents(link)
href = link.get('href')
if title:
judgedict['title'] = title
if href:
judgedict['href'] = href
tds = tr.findAll('td')
for td in tds:
txt = utils.get_tag_contents(td)
reobj = re.search('Coram\s*:', txt)
if reobj and reobj.end() + 1 < len(txt):
bench = txt[reobj.end() + 1:]
judgedict['bench'] = bench
return judgedict
def datequery_result(self, webpage, relpath, pagenum, dateobj):
downloaded = []
d = utils.parse_webpage(webpage)
if not d:
self.logger.error(u'Could not parse html of the result page for date %s' % dateobj)
return downloaded
stateval = self.extract_state(d)
if stateval != None and stateval != self.stateval:
self.stateval = stateval
self.logger.info(u'stateval changed')
linkdict = self.extract_links(d, pagenum)
for link in linkdict['docs']:
if (not link.has_key('title')) or (not link.has_key('href')):
continue
self.logger.info(u'Processing link: %s href: %s' % \
(link['title'], link['href']))
filename = re.sub('/', '|', link['title'])
filename = re.sub("'", ' ', filename)
tmprel = os.path.join (relpath, filename)
rawpath = os.path.join (self.rawdir, tmprel)
metapath = os.path.join (self.metadir, tmprel)
if not os.path.exists(rawpath):
webpage = self.download_link(link)
if webpage:
utils.save_file(rawpath, webpage)
else:
self.logger.warning(u'Could not download %s' % \
link['title'])
if os.path.exists(rawpath) and not os.path.isdir(rawpath):
if not os.path.exists(metapath) or self.updateMeta:
self.save_meta_tags(metapath, link, dateobj)
downloaded.append(tmprel)
if linkdict.has_key('next'):
link = linkdict['next']
self.logger.info(u'Following page: %s href: %s' % \
(link['title'], link['href']))
webpage = self.download_link(link)
if webpage:
nextdownloads = self.datequery_result(webpage, relpath, \
pagenum + 1, dateobj)
downloaded.extend(nextdownloads)
else:
self.logger.warning(u'Could not download %s' % link['title'])
return downloaded
def extract_state(self, prsdobj):
stateval = {}
inputs = prsdobj.findAll('input')
for input in inputs:
name = input.get('name')
if name in self.statevalNames:
stateval[name] = input.get('value')
return stateval
def state_data(self):
t = []
for name in self.statevalNames:
if self.stateval.has_key(name):
t.append((name, self.stateval[name]))
return t
def get_stateval(self, url):
webpage = self.download_url(url, \
savecookies = self.cookiefile.name)
d = utils.parse_webpage(webpage)
if d:
return self.extract_state(d)
else:
return None
def download_webpage(self, postdata, posturl):
webpage = self.download_url(posturl, postdata = postdata, \
loadcookies = self.cookiefile.name)
return webpage
def parse_link(self, linkname):
linkRe = "javascript:__doPostBack\('(?P<event_target>[^']+)','(?P<event_arg>[^']*)'\)"
return re.search(linkRe, linkname)
def download_link(self, link):
linkinfo = self.parse_link(link['href'])
if linkinfo == None:
self.logger.warning(u'Values not in %s. title is %s' % \
(link['href'], link['title']))
return None
eventTarget =string.join(linkinfo.group('event_target').split('$'), ':')
postdata = self.state_data()
postdata.extend([('__EVENTTARGET', eventTarget), \
('__EVENTARGUMENT', linkinfo.group('event_arg'))])
return self.download_webpage(postdata, self.webformUrl)