Subversion Repositories SmartDukaan

'''
Created on 27-May-2010

@author: gaurav
'''
from scrapy.spider import BaseSpider
from scrapy.selector import HtmlXPathSelector
from scrapy.http import Request

from demo.items import DemoItem
from scrapy.contrib.spidermiddleware import referer
from scrapy.http.headers import Headers
from scrapy.http.request.form import FormRequest
from scrapy.log import msg
from scrapy.http.response import Response
from time import *
from datastore.DataCodeAccessor import *
from datastore.DataAccessor import *

import urllib
from html2text.unescaping import *

class naaptol_price(BaseSpider):
    
    def __init__(self): 
       initialize_table()
       #NAAPTOL_DOMAINNAME1 = "naaptol1"   
       NAAPTOL_DOMAINNAME1 = get_code_word("NAAPTOL_DOMAINNAME1")
       self.domain_name = NAAPTOL_DOMAINNAME1 
       
       # get urls from the database and append them in the list for crawling
       da = DataHelper()
       #url = "http://www.naaptol.com/features/10417-Fly-E300.html"
       #self.start_urls.append(url)
       for pitem in da.get_allnaaptolurls():
            self.start_urls.append(pitem.url.strip())
    
    def start_requests(self):
        #for each request a referer has to be set
        listreq = []
        #NAAPTOL_REFERER = "http://www.google.com"
        NAAPTOL_REFERER = get_code_word("NAAPTOL_REFERER")
        for url1 in self.start_urls:
            request = Request(url = str(url1), callback=self.parse)
            request.headers.setdefault("Referer", NAAPTOL_REFERER)
            listreq.append(request)
        return listreq
    
    def parse(self, response):
        # there are two different type of urls one contains feature and other one contains price
        #both have to be processed differently
        msg(response.url)
        site = response.url
        site = unescape(site)
        sp1 = site.rfind("/")
        sp2 = site.rfind("/",0,sp1-1)
        catg = site[sp2+1:sp1]
        da = DataHelper()
        #change price to features and add to urls as both provide the same data but in different formats
        #otherwise crawl the url containing features
        #NAAPTOL_CHKLIST2 = ['price']
        #list separated by ';'
        NAAPTOL_CHKLIST2 = get_code_word("NAAPTOL_CHKLIST2")
        NAAPTOL_CHKLIST2 = NAAPTOL_CHKLIST2.split(';')
        #NAAPTOL_PART = "features"
        NAAPTOL_PART = get_code_word("NAAPTOL_PART")
        #NAAPTOL_REMOVELIST = ["Rs.",","]
        NAAPTOL_REMOVELIST = get_code_word("NAAPTOL_REMOVELIST")
        NAAPTOL_REMOVELIST = NAAPTOL_REMOVELIST.split(';')
        for c in NAAPTOL_CHKLIST2:
            if c == catg:
                site = site.replace(c,NAAPTOL_PART)
                da.add_morenaaptolurl(site)
                
                
        if catg == NAAPTOL_PART:    
            #retreiving name from the the url
            name = str(response.url)
            name = unescape(name)
            name_pos = name.rfind("/")
            name = name[name_pos+1:len(name)-5]
            name_pos = name.find("-")
            name = name[name_pos+1:len(name)]
            
            hxs = HtmlXPathSelector(response)  
            #price and price2 determine range
            #NAAPTOL_XPATH2 = '//table[@class ="ProductDetails"]//td[@class="Price"]/span/text()'
            NAAPTOL_XPATH2 = get_code_word("NAAPTOL_XPATH2")
            prices = hxs.select(NAAPTOL_XPATH2)
            try:
                price1 = prices.extract()[0]
                #price1 = price1.decode("utf-8")
                price1 = price1.strip()
            except:
                price1 = ""
            
            try:
                price2 = prices.extract()[1]
                #price2 = price2.decode("utf-8")
                price2 = price2.strip()
            except:
                price2 = ""  
            try:
                if price1 == "" and price2 == "":
                    #NAAPTOL_XPATH3 = '//table[@class ="ProductDetails"]//td[@class="Price"]/span/script/text()'
                    NAAPTOL_XPATH3 = get_code_word("NAAPTOL_XPATH3")
                    prices = hxs.select(NAAPTOL_XPATH3)
                    price = str(prices.extract()[0])
                    pos1 = price.find("'")
                    pos2 = price.find("'",pos1+1,len(price))
                    price1 = price[pos1+1:pos2] + "(approx)" 
                    price2 = ""
            except:
                price1 = price2 = ""
            #removelist is used for converting price to decimal format containing only numbers and '.'    
                
            if price1 != '':
                for r in NAAPTOL_REMOVELIST: 
                    while price1.find(r) != -1:
                        price1 = price1.replace(r, "")
                price1 = price1.strip()
            if price2 != '':        
                for r in NAAPTOL_REMOVELIST: 
                    while price2.find(r) != -1:
                        price2 = price2.replace(r, "")
                price2 = price2.strip()
            
            if price1 == "Rates Not Available":
                price1 = price2 = ""
            
            #range = price1 to price2
            range = price1
            if price2 != "":
                range = str(range) + " to " 
                range = range + str(price2) 
                
            da.add_new_naaptolphone(name, str(range))
            
            
            OnlineSellers_pricelist = []
            OnlineSellers_namelist = []
            try:
                #ct1 holds the count of online sellers
                #NAAPTOL_XPATH4 = '//div[@id="OnlineSellers"]//div[@class="ProductResultHead"]//div[@class="headingstyle"]/text()'
                NAAPTOL_XPATH4 = get_code_word("NAAPTOL_XPATH4")
                ct1 = hxs.select(NAAPTOL_XPATH4)
                ct1 = str(ct1.extract()[0])
                ct1 = ct1.decode("utf-8")
                ct1 = ct1.strip()
                ps1 = ct1.find(" ")
                ct1 = ct1[0:ps1]
                ct1 = int(ct1)
            except:
                ct1 = 0
            ct = ct1
            i = 0
            #NAAPTOL_XPATH5 = '//div[@id="onSellerContents"]//td[@class="price"]'
            NAAPTOL_XPATH5 = get_code_word("NAAPTOL_XPATH5")
            os_info = hxs.select(NAAPTOL_XPATH5)
            while ct > 0:
                os = os_info[i].extract()
                ps1 = os.find(">")
                ps2 = os.find("<",ps1)
                os = os[ps1+1:ps2]
                
                if os != '':        
                    for r in NAAPTOL_REMOVELIST: 
                        while os.find(r) != -1:
                            os = os.replace(r, "")
                os = urllib.unquote(os)
                try:
                    os = int(os)
                except:
                    #stored in format different than previous one
                    os = os_info[i].extract()
                    ps1 = os.find(">",ps2)
                    ps2 = os.find("<",ps1)
                    os = os[ps1+1:ps2]
                    if os != '':        
                        for r in NAAPTOL_REMOVELIST: 
                            while os.find(r) != -1:
                                os = os.replace(r, "")
                    os = urllib.unquote(os)
                    os = int(os) 
                
                OnlineSellers_pricelist.append(os)
                
                #NAAPTOL_XPATH6 = '//div[@id="onSellerContents"]//tr[@class="DottedBorder"]/td/a[@id="storeInfoPop'  
                NAAPTOL_XPATH6 = get_code_word("NAAPTOL_XPATH6")
                #NAAPTOL_XPATH7 = '"]/span/text()'
                NAAPTOL_XPATH7 = get_code_word("NAAPTOL_XPATH7")
                NAAPTOL_XPATH6 = NAAPTOL_XPATH6 + str(i) 
                NAAPTOL_XPATH6 = NAAPTOL_XPATH6 + NAAPTOL_XPATH7 
                path = NAAPTOL_XPATH6
                osname = hxs.select(path)
                osname = osname.extract()[0]
                osname = unescape(osname)
                osname = urllib.unquote(osname)
                OnlineSellers_namelist.append(osname)
                i = i+1
                ct = ct-1
                
            l = len(OnlineSellers_pricelist)
            i = 0 
            nid = da.get_naaptolphone(name,range).id
            while l > 0:
                da.add_new_ntonlinesp(nid, OnlineSellers_namelist[i], OnlineSellers_pricelist[i])
                i = i+1
                l = l-1
            
            LocalSellers_pricelist = []   
            LocalSellers_namelist = []
            try:
                #ct1 holds the count of online sellers
                #NAAPTOL_XPATH8 = '//div[@id="LocalStores"]//div[@class="ProductResultHead"]//div[@class="headingstyle"]/text()'
                NAAPTOL_XPATH8 = get_code_word("NAAPTOL_XPATH8")
                ct1 = hxs.select(NAAPTOL_XPATH8)
                ct1 = str(ct1.extract()[0])
                ct1 = ct1.decode("utf-8")
                ct1 = ct1.strip()
                ps1 = ct1.find(" ")
                ct1 = ct1[0:ps1]
                ct1 = int(ct1)
            except:
                ct1 = 0
            ct = ct1
            i = 0
            #NAAPTOL_XPATH9 = '//div[@id="offSellerContents"]//td[@class="price"]'
            NAAPTOL_XPATH9 = get_code_word("NAAPTOL_XPATH9")
            #NAAPTOL_XPATH10 = '//div[@id="offSellerContents"]//span[@class="LocalStoreHeading"]/text()'
            NAAPTOL_XPATH10 = get_code_word("NAAPTOL_XPATH10")
            os_info = hxs.select(NAAPTOL_XPATH9)
            os_names = hxs.select(NAAPTOL_XPATH10)
            
            while ct > 0:
                os = os_info[i].extract()
                osname = os_names[i].extract() 
                ps1 = os.find(">")
                ps2 = os.find("<",ps1)
                os = os[ps1+1:ps2]
                if os != '':        
                    for r in NAAPTOL_REMOVELIST: 
                        while os.find(r) != -1:
                            os = os.replace(r, "")
                os = urllib.unquote(os)
                osname = urllib.unquote(osname)
                osname = unescape(osname)
                try:
                    os = int(os)
                except:
                    #stored in format different than previous one
                    os = os_info[i].extract()
                    ps1 = os.find(">",ps2)
                    ps2 = os.find("<",ps1)
                    os = os[ps1+1:ps2]
                    if os != '':        
                        for r in NAAPTOL_REMOVELIST: 
                            while os.find(r) != -1:
                                os = os.replace(r, "")
                    os = urllib.unquote(os)
                    os = int(os)        
                LocalSellers_pricelist.append(os)
                LocalSellers_namelist.append(osname)
                i = i+1
                ct = ct-1
                
            l = len(LocalSellers_pricelist)
            i = 0
            nid = da.get_naaptolphone(name,range).id
            while l > 0:
                da.add_new_ntofflinesp(nid, LocalSellers_namelist[i], LocalSellers_pricelist[i])
                i = i+1
                l = l-1
            
SPIDER = naaptol_price()