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stgeorge.py
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stgeorge.py
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import datetime
import re
import os
import calendar
from kerala import Kerala
import utils
class StGeorge(Kerala):
def __init__(self, name, storage):
Kerala.__init__(self, name, storage)
self.hostname = 'statelibrary.kerala.gov.in'
self.date_url = 'http://statelibrary.kerala.gov.in/fort_gazette/gazette.php'
self.baseurl = 'http://statelibrary.kerala.gov.in/fort_gazette/'
self.parser = 'html.parser'
self.start_date = datetime.datetime(1903, 1, 1)
self.save_raw = False
self.gzurl_format = 'sitemedia/TG%s/%s/%s_Page_%s.png'
def get_post_data(self, year):
postdata = [('action', 'search_Gazette'), ('department', ''), \
('gaz_date', ''), ('gaz_eo', '0'), ('gaz_issue_number', ''), \
('gaz_month', ''), ('gaz_number', ''), ('gaz_part', ''), \
('gaz_volume', ''), ('gaz_year', year), ('order_no', ''), \
('order_no_category', 'All'), ('result_start', 0), \
('search_string', ''), ('year_category', 'exact')]
return postdata
def download_dates(self, relpath, fromdate, todate):
year = fromdate.year
assert year == todate.year
postdata = self.get_post_data(year)
response = self.download_url(self.date_url, postdata = postdata)
if response and response.webpage:
dls = self.results_page(relpath, response.webpage, year, \
fromdate, todate)
else:
dls = []
return dls
def results_page(self, relpath, webpage, year, fromdate, todate):
dls = []
while 1:
minfos, nextpage = self.parse_metainfos(webpage, year, \
fromdate, todate)
self.download_gazettes(relpath, minfos, dls)
if nextpage:
onclick = nextpage.get('onclick')
postdata = self.next_page_post(onclick, year)
if not postdata:
self.logger.warn('Unable to get postdata for next page from %s', onclick)
break
response = self.download_url(self.date_url, postdata = postdata)
if not response or not response.webpage:
break
webpage = response.webpage
else:
break
return dls
def download_gazettes(self, relpath, minfos, dls):
for metainfo in minfos:
relurl = metainfo.pop('relurl')
dateobj = metainfo.get_date()
gurl = metainfo.get_url()
relurl = os.path.join(relpath, dateobj.__str__(), relurl)
updated = False
if self.save_raw and self.storage_manager.should_download_raw(relurl, gurl):
response = self.download_url(gurl)
doc = response.webpage
if doc and self.is_valid_gazette(doc, 0):
if self.storage_manager.save_rawdoc(self.name, relurl, response.srvresponse, doc):
updated = True
self.logger.info(u'Saved rawfile %s' % relurl)
else:
self.logger.info(u'not able to save the doc %s' % relurl)
if self.storage_manager.save_metainfo(self.name, relurl, metainfo):
self.logger.info(u'Saved metainfo %s' % relurl)
updated = True
if updated:
dls.append(relurl)
def parse_metainfos(self, webpage, year, fromdate, todate):
minfos = []
nextpage = None
d = utils.parse_webpage(webpage, self.parser)
if not d:
self.logger.warn('Unable to parse results page for year %d', year)
return minfos
for td in d.find_all('td'):
link = td.find('a')
if link == None:
continue
img = td.find('img')
if img:
title = img.get('title')
if title == 'Next' and nextpage == None:
nextpage = link
continue
metainfo = self.get_metainfo(link, td)
if metainfo:
dateobj = metainfo.get_date()
if dateobj and dateobj >= fromdate and dateobj <= todate:
minfos.append(metainfo)
paras = td.find_all('p')
if len(paras) >= 2:
p = paras[1]
txt = utils.get_tag_contents(p)
reobj = re.search('Department:\s*(?P<dept>.+)\s+Order\s+Nos:\s*(,Othres\s*:)?(?P<ordernum>.*)', txt)
if reobj:
groupdict = reobj.groupdict()
ordernum = groupdict['ordernum'].strip()
metainfo['department'] = groupdict['dept'].strip()
if re.match('[\d+(,\s*)?]+$', ordernum):
metainfo['ordernum'] = ordernum
if len(paras) >= 3:
p = paras[2]
txt = utils.get_tag_contents(p)
if txt:
metainfo.set_subject(txt)
return minfos, nextpage
def get_metainfo(self, link, td):
onclick = link.get('onclick')
if onclick == None:
return None
reobj = re.search("loadFullImg\(\s*'(?P<gzyear>\w+)'\s*,\s*'(?P<month>\w+)'\s*,\s*'(?P<day>\w+)'\s*,\s*'(?P<accno>\w+)'\s*,\s*(?P<pdf_page>\w+)\s*,\s*(?P<gzpage>\w+)\)", onclick)
if not reobj:
return None
groupdict = reobj.groupdict()
gzyear = groupdict['gzyear']
month = groupdict['month']
day = groupdict['day']
accno = groupdict['accno']
page = int(groupdict['pdf_page'])
gzpage = int(groupdict['gzpage'])
pagenumber = '%d' % page
if gzpage >= 10 and gzpage < 100:
if page < 10:
pagenumber = '0' + pagenumber
elif gzpage >= 100 and gzpage < 1000:
if page < 10:
pagenumber = '00' + pagenumber
elif page < 100:
pagenumber = '0' + pagenumber
elif gzpage >= 1000:
if page < 10:
pagenumber = '000' + pagenumber
elif page < 100:
pagenumber = '00' + pagenumber
elif page < 1000:
pagenumber = '0' + pagenumber
month_num = utils.get_month_num(month, calendar.month_abbr)
d = datetime.date(int(gzyear), month_num, int(day))
gzurl = self.baseurl + self.gzurl_format % (gzyear, accno, accno, pagenumber)
metainfo = utils.MetaInfo()
metainfo.set_url(gzurl)
metainfo.set_date(d)
metainfo['relurl'] = '%s_Page_%s' % (accno, pagenumber)
txt = utils.get_tag_contents(link)
self.populate_link_metainfo(txt, metainfo)
return metainfo
def populate_link_metainfo(self, txt, metainfo):
reobj = re.search('Issue\s+Number:\s*(?P<num>\d+)', txt)
if reobj:
metainfo['issue'] = reobj.groupdict()['num']
reobj = re.search('Part:\s*(?P<num>[^,]+),', txt)
if reobj:
metainfo['partnum'] = reobj.groupdict()['num']
reobj = re.search('Gazette\s+Page:\s*(?P<num>\d+)', txt)
if reobj:
metainfo['gzpage'] = reobj.groupdict()['num']
def next_page_post(self, onclick, year):
reobj = re.search('recordPagination\("(?P<query>[^"]+)"\s*,\s*(?P<start>\d+)\s*,\s*(?P<page>\d+)', onclick)
if reobj:
groupdict = reobj.groupdict()
self.logger.info('Next page %s for year %s', groupdict['page'], year)
postdata = [('action', 'row_pagination'), \
('current_page', groupdict['page']), \
('query', groupdict['query']), \
('row_start', groupdict['start'])]
else:
postdata = None
return postdata
class KeralaLibrary(StGeorge):
def __init__(self, name, storage):
StGeorge.__init__(self, name, storage)
self.hostname = 'statelibrary.kerala.gov.in'
self.date_url = 'http://statelibrary.kerala.gov.in/gazette/gazette.php'
self.baseurl = 'http://statelibrary.kerala.gov.in/gazette/'
self.parser = 'html.parser'
self.start_date = datetime.datetime(1903, 1, 1)
self.save_raw = False
self.gzurl_format = 'sitemedia/%s/%s/%s_Page_%s.png'
def populate_link_metainfo(self, txt, metainfo):
reobj = re.search('Issue\s+Number:\s*(?P<num>\d+)', txt)
if reobj:
metainfo['issue'] = reobj.groupdict()['num']
reobj = re.search('Part:\s*(?P<num>.+),?\s*Gazette\s+Page:\s*(?P<gzpage>\w+),', txt)
if reobj:
metainfo['partnum'] = reobj.groupdict()['num']
metainfo['gzpage'] = reobj.groupdict()['gzpage']
reobj = re.search('Volume:?\s*(?P<volume>\w*)\s*Number:\s*(?P<number>\d+)', txt)
if reobj:
metainfo['volume'] = reobj.groupdict()['volume']
metainfo['number'] = reobj.groupdict()['number']