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A spot of refactoring

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This commit is contained in:
Kovid Goyal 2017-02-28 22:44:35 +05:30
parent caac92bbd8
commit e20230c9a7
1 changed files with 40 additions and 10 deletions
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50
src/calibre/utils/random_ua.py
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@ -20,31 +20,61 @@ def common_user_agents():
return user_agent_data()['common_user_agents'] return user_agent_data()['common_user_agents']
def all_firefox_versions(limit=7):
return user_agent_data()['firefox_versions'][:limit]
def random_firefox_version(): def random_firefox_version():
versions = user_agent_data()['firefox_versions'][:7] return random.choice(all_firefox_versions())
return random.choice(versions)
def random_desktop_platform(): def random_desktop_platform():
return random.choice(user_agent_data()['desktop_platforms']) return random.choice(user_agent_data()['desktop_platforms'])
def random_firefox_ua(): def render_firefox_ua(platform, version):
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent/Firefox # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/User-Agent/Firefox
return 'Mozilla/5.0 ({p}; rv:{ver}) Gecko/20100101 Firefox/{ver}'.format( return 'Mozilla/5.0 ({p}; rv:{ver}) Gecko/20100101 Firefox/{ver}'.format(
p=random_desktop_platform(), ver=random_firefox_version()) p=platform, ver=version)
def random_firefox_ua():
render_firefox_ua(random_desktop_platform(), random_firefox_version())
def all_chrome_versions(limit=7):
return user_agent_data()['chrome_versions'][:limit]
def random_chrome_version(): def random_chrome_version():
versions = user_agent_data()['chrome_versions'][:7] return random.choice(all_chrome_versions())
return random.choice(versions)
def render_chrome_ua(platform, version):
return 'Mozilla/5.0 ({p}) AppleWebKit/{wv} (KHTML, like Gecko) Chrome/{cv} Safari/{wv}'.format(
p=platform, wv=version['webkit_version'], cv=version['chrome_version'])
def random_chrome_ua(): def random_chrome_ua():
v = random_chrome_version() return render_chrome_ua(random_desktop_platform(), random_chrome_version())
return 'Mozilla/5.0 ({p}) AppleWebKit/{wv} (KHTML, like Gecko) Chrome/{cv} Safari/{wv}'.format(
p=random_desktop_platform(), wv=v['webkit_version'], cv=v['chrome_version'])
def all_user_agents():
ans = getattr(all_user_agents, 'ans', None)
if ans is None:
uas = []
g = globals()
platforms = user_agent_data()['desktop_platforms']
for b in ('chrome', 'firefox'):
versions = g['all_%s_versions' % b]()
func = g['render_%s_ua' % b]
for v in versions:
for p in platforms:
uas.append(func(p, v))
random.shuffle(uas)
ans = all_user_agents.ans = tuple(uas)
return ans
def random_user_agent(): def random_user_agent():
return random.choice((random_chrome_ua, random_firefox_ua))() return random.choice(all_user_agents())