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sync_download.py
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#!/usr/bin/env python
#http:// www.etsi.org / deliver/etsi_ts / 121100_121199 / 121101 / 11.01.00_60 / ts_121101v110100p.pdf
#http:// host / ================================= file_path ==================================
#http:// host / ================ version_path(_list) ===================
#http:// host / ======== spec_number_path(_list) =========
#http:// host / ======= series_path(_list) ======
#http:// host / == etsi_type ==
import time
import urllib2
import urllib
import re
import os
host = 'http://www.etsi.org/'
etsi_type_list = ('deliver/etsi_ts/', 'deliver/etsi_tr/')
series = range(21, 38)
def log(tag, data):
if type(data) == list:
data = '; '.join(data)
print time.strftime('%Y-%m-%d %H:%M:%S ', time.localtime(time.time())) + tag + ' ==== ' + data
def getHtml(url):
# httpHandler = urllib2.HTTPHandler(debuglevel=1)
# httpsHandler = urllib2.HTTPSHandler(debuglevel=1)
# opener = urllib2.build_opener(httpHandler, httpsHandler)
# urllib2.install_opener(opener)
log('getHtml', 'open "' + url + '" start...')
page = urllib2.urlopen(url)
log('getHtml', 'open "' + url + '" end')
log('getHtml', 'read "' + url + '" start...')
html = page.read()
log('getHtml', 'read "' + url + '" end')
page.close()
return html
def fetchAllFiles(etsi_type):
# optimize: etsi_type just read once
html = getHtml(host + etsi_type)
for re_series_main in series:
series_path_list = getAllSeriesList(html, etsi_type, re_series_main)
if series_path_list == []:
continue
spec_number_path_list = getSpecNumListOfEachSeries(str(re_series_main), series_path_list)
if spec_number_path_list == []:
continue
file_path_list = getFilePathList0fSpec(etsi_type, spec_number_path_list)
for file_path in file_path_list:
retrieveFile(host + file_path, str(re_series_main) + '-series')
def getAllSeriesList(html, etsi_type, re_series_main):
re_series_sub = '[0-9]{3}'
re_series_full = '1' + str(re_series_main) + re_series_sub
re_series_list = re.compile(etsi_type + re_series_full + '_' + re_series_full + '/')
series_path_list = re.findall(re_series_list, html)
#mkdir 21-series -p .ets
if series_path_list != []:
log('getAllSeriesList', series_path_list)
if os.path.exists(str(re_series_main) + '-series') == False:
os.mkdir(str(re_series_main) + '-series')
else:
#30-series is special
log('getAllSeriesList', str(re_series_main) + '-series is None in ' + etsi_type)
return series_path_list
def getSpecNumListOfEachSeries(re_series, series_path_list):
spec_number_path_list = []
for series_path in series_path_list:
html = getHtml(host + series_path)
# += include all of spec in list, because series may be deviced into serverl part
spec_number_path_list += re.findall(series_path + '[0-9]{6,10}' + '/', html)
if spec_number_path_list != []:
log('getSpecNumListOfEachSeries', spec_number_path_list)
else:
log('getSpecNumListOfEachSeries', 'no spec in ' + re_series)
return spec_number_path_list
def getFilePathList0fSpec(etsi_type, spec_number_path_list):
file_path_list = []
for spec_number_path in spec_number_path_list:
latest_version = getLatestVersionOfSpec(spec_number_path)
file_name = getFileNameOfLatestVersion(etsi_type, spec_number_path, latest_version)
#virtual download indication
#os.mknod(file_name)
file_path = spec_number_path + latest_version + '/' + file_name
file_path_list.append(file_path)
log('getFilePathList0fSpec', file_path_list)
return file_path_list
def getLatestVersionOfSpec(spec_number_path):
latest_version_path = getLatestVersionPathOfSpec(spec_number_path)
latest_version = getDirectory(spec_number_path, latest_version_path)
log('getLatestVersionOfSpec', latest_version)
return latest_version
def getLatestVersionPathOfSpec(spec_number_path):
html = getHtml(host + spec_number_path)
re_version = re.compile(spec_number_path + '[0-9]{2}\.[0-9]{2}\.[0-9]{2}_[0-9]{2}' + '/')
version_path_list = re.findall(re_version, html)
log('getLatestVersionPathOfSpec', max(version_path_list))
return max(version_path_list)
def getDirectory(path_parent, path_sub):
return (set(path_sub.split('/')) - set(path_parent.split('/'))).pop()
def getFileNameOfLatestVersion(etsi_type, spec_number_path, latest_version):
spec_number = spec_number_path.split('/')[-2]
# 121101 + 11.01.00_60 = ts_121101v110100p.pdf
file_name = ('ts_' if etsi_type == 'deliver/etsi_ts/' else 'tr_') \
+ spec_number \
+ 'v' \
+ latest_version.replace('.', '').replace('_60', '') \
+ 'p.pdf'
log('getFileNameOfLatestVersion', file_name)
return file_name
def retrieveFile(file_full_path, save_to_directory):
log('retrieveFile', 'retrieving ' + file_full_path + ' into ' + save_to_directory)
file_local = save_to_directory + '/' + file_full_path.split('/')[-1]
remote_file_size = get_remote_file_size(file_full_path)
if os.path.exists(file_local) == True:
if remote_file_size != str(os.path.getsize(file_local)):
# if file is not downloaded 100%
os.remove(file_local)
else:
log('retrieveFile', file_local + ' is already retrieved.')
return
urllib.urlretrieve(file_full_path, file_local)
if remote_file_size != str(os.path.getsize(file_local)):
log('retrieveFile', 'retrieve ' + file_full_path + ' failed!')
else:
log('retrieveFile', 'retrieve ' + file_full_path + ' finished!')
def get_remote_file_size(url, proxy=None):
opener = urllib2.build_opener()
if proxy:
if url.lower().startswith('https://'):
opener.add_handler(urllib2.ProxyHandler({'https' : proxy}))
else:
opener.add_handler(urllib2.ProxyHandler({'http' : proxy}))
request = urllib2.Request(url)
request.get_method = lambda: 'HEAD'
try:
response = opener.open(request)
response.read()
except Exception, e:
print '%s %s' % (url, e)
else:
return dict(response.headers).get('content-length', 0)
def main():
for etsi_type in etsi_type_list:
log('main', 'Fetching ' + etsi_type + ' ...')
fetchAllFiles(etsi_type)
log('main', 'All is done!')
if __name__ == '__main__':
main()