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surf.py
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surf.py
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# coding=utf-8
import requests
from bs4 import BeautifulSoup
class Surf:
def __init__(self, version):
self.baseURL = "https://developer.android.com/sdk/api_diff/%d/changes/" % (version)
print("**********************************************")
print("* Notice: Now Scratch Api_Diff Version is %d *" % version)
print("**********************************************")
self.aAllTags = None
self.noRepeatTags = set()
self.index = 0
self.total = 0
def findAllHyperLink(self, diffURL):
# find all HyperLink in BaseURL Index
indexHtml = requests.get(self.baseURL + diffURL)
# all html information save in Attribute text
self.aAllTags = BeautifulSoup(indexHtml.text, "lxml").find_all("a")
return self
def selectHyperLinkWhichIsNeeded(self):
'''
a rule to delete useless data
1. in aAllTags, value 0,1,2,3 is useless, because the href they have i list below, we need delete them firstly
<a name="topheader"></a>
<a href="/sdk/api_diff/22/changes/alldiffs_index_removals" xclass="hiddenlink">Removals</a>
<a href="/sdk/api_diff/22/changes/alldiffs_index_additions" xclass="hiddenlink">Additions</a>
<a href="/sdk/api_diff/22/changes/alldiffs_index_changes" xclass="hiddenlink">Changes</a>
2. in documents has some label hyperlink <a name="A"></a>, we only use it to locate.
<a href="#B"><font size="-2">B</font></a>
3. like top label：<a href="#topheader"></a>
4. need to delete package, beacause all Classes are listed
if save it, the work will be more difficult
'''
# 1
del self.aAllTags[0]
del self.aAllTags[0]
del self.aAllTags[0]
del self.aAllTags[0]
# 2 use set to save data, because they may repeat
for tag in self.aAllTags:
# first check use to delete rule 2 and 3
# second check use to delete rule 4
if len(tag.text) > 14:
self.noRepeatTags.add(tag.get('href'))
self.total = len(self.noRepeatTags)
print("Total HyperLink Count: %d" % self.total)
return self
def findDeprecate(self, bs):
if bs.find(id="mainBodyFluid").find('p').text.__contains__("Now deprecated."):
return True
else:
return False
def findBySummary(self, bs, summary, datas):
index = 0
change = bs.find(summary=summary)
if change != None:
changeTDs = change.find_all("td")
for data in changeTDs:
if index % 2 == 0:
datas.append(data.find("a")["name"])
index += 1
def count(self):
self.index += 1
print(self.index, "/", self.total)
def surfURIFindDeprecateData(self):
# use known useful hyperlink to complete data acquisition
needBeOutputData = []
while len(self.noRepeatTags) != 0:
self.count()
hasDiffClass = self.noRepeatTags.pop().split("/")[-1]
needCheckHtml = requests.get(self.baseURL + hasDiffClass)
bsSingleHtml = BeautifulSoup(needCheckHtml.text, "lxml")
'''
som methods which mark Deprecated label
1.
Class org.apache.http.impl.conn.IdleConnectionHandler
Now deprecated.
2.
in Change Method、Fields、Constructors
'''
# rule 1 priority is over rule 2
isAdded = False
if bsSingleHtml.find(id="mainBodyFluid").find('p').text.__contains__("Now deprecated."):
needBeOutputData.append(hasDiffClass)
isAdded = True
# find Deprecated method in Changed Methods table
if not isAdded:
index = 0
changMethod = bsSingleHtml.find(summary="Changed Methods")
if changMethod != None:
changMethodTDs = changMethod.find_all("td")
for data in changMethodTDs:
if data.text.__contains__("Now deprecated"):
needBeOutputData.append(changMethodTDs[index - 1].find("a")["name"])
index += 1
# find Deprecated method in Changed Fields table
if not isAdded:
index = 0
changField = bsSingleHtml.find(summary="Changed Fields")
if changField != None:
changFieldTDs = changField.find_all("td")
for data in changFieldTDs:
if data.text.__contains__("Now deprecated"):
needBeOutputData.append(changFieldTDs[index - 1].find("a")["name"])
index += 1
# find Deprecated method in Changed Constructors table
if not isAdded:
index = 0
changField = bsSingleHtml.find(summary="Changed Constructors")
if changField != None:
changFieldTDs = changField.find_all("td")
for data in changFieldTDs:
if data.text.__contains__("Now deprecated"):
needBeOutputData.append(changFieldTDs[index - 1].find("a")["name"])
index += 1
return needBeOutputData
def surfURIFindAddedData(self):
# use known useful hyperlink to complete data acquisition
needBeOutputData = []
while len(self.noRepeatTags) != 0:
self.count()
hasDiffClass = self.noRepeatTags.pop().split("/")[-1]
needCheckHtml = requests.get(self.baseURL + hasDiffClass)
bsSingleHtml = BeautifulSoup(needCheckHtml.text, "lxml")
'''
som methods which mark Deprecated label
1.
Class org.apache.http.impl.conn.IdleConnectionHandler
Now deprecated.
2.
in Change Method、Fields、Constructors、Classes
'''
# rule 1 priority is over rule 2
if not self.findDeprecate(bsSingleHtml):
# find Added method in Changed Methods table
self.findBySummary(bsSingleHtml, "Added Methods", needBeOutputData)
# find Added method in Changed Fields table
self.findBySummary(bsSingleHtml, "Added Fields", needBeOutputData)
# find Added method in Changed Constructors table
self.findBySummary(bsSingleHtml, "Added Constructors", needBeOutputData)
# find Added method in Changed Constructors table
self.findBySummary(bsSingleHtml, "Added Classes", needBeOutputData)
return needBeOutputData
def surfURIFindRemoveData(self):
# use known useful hyperlink to complete data acquisition
needBeOutputData = []
while len(self.noRepeatTags) != 0:
self.count()
hasDiffClass = self.noRepeatTags.pop().split("/")[-1]
needCheckHtml = requests.get(self.baseURL + hasDiffClass)
bsSingleHtml = BeautifulSoup(needCheckHtml.text, "lxml")
'''
som methods which mark Removal label
1.
Class org.apache.http.impl.conn.IdleConnectionHandler
Now deprecated.
this is time you can skip it to speedup
2.
in Removal Method、Fields、Constructors、Classes
'''
# rule 1 priority is over rule 2
if not self.findDeprecate(bsSingleHtml):
# find Removed method in Changed Methods table
self.findBySummary(bsSingleHtml, "Removed Methods", needBeOutputData)
# find Removed method in Changed Fields table
self.findBySummary(bsSingleHtml, "Removed Fields", needBeOutputData)
# find Removed method in Changed Constructors table
self.findBySummary(bsSingleHtml, "Removed Constructors", needBeOutputData)
# find Removed method in Removed Classes table
self.findBySummary(bsSingleHtml, "Removed Classes", needBeOutputData)
return needBeOutputData