import urllib,os,sys

def getUrlContent(url):
    fp =urllib.urlopen(url)
    cont =fp.read()
    fp.close()
    return cont
    
# to read blog urls in one page    
class findBlog:
    def __init__(self,cont):
        self.p=0
        self.cont =cont
    def get(self):
        p1 =self.cont.find('<div class="post">',self.p)
        if p1>0:
            p2 =self.cont.find('<h2><a id="homepage1_HomePageDays',p1)
            if p2>0:
                p3 =self.cont.find('href="',p2)
                if p3>0:
                    p4 =self.cont.find('">',p3)
                    if p4>0:
                        url =self.cont[(p3+len('href="')):p4]
                        p5 =self.cont.find('</a>',p4)
                        if p5>0:
                            title =self.cont[(p4+len('">')):p5]
                            self.p =p5
                            return [url, title]
        return None

def logFile(fname, cont):
    if os.path.isfile(fname):
        print fname, 'esist!'
    #    return
    fp=open(fname,'w')
    fp.write(cont)
    fp.close()
    
def appendFile(fname, cont):
    fp=open(fname,'a')
    fp.write(cont)
    fp.close()
    
def MyCmd(x):
    print x
    os.system(x)
    
#to read all blog contents in all pages
class blogReader:
    def __init__(self):
        self.is_latest_written =0
        self.latest_url =''
        
        #update self.latest_url 
        fname ='cfg.txt'
        if os.path.isfile(fname):
            fp =open(fname,'r')
            self.latest_url =fp.readline().strip()
            fp.close()
            
        print 'latest_url', self.latest_url
    def readPage(self,pid):
        is_latest =0
        cont =getUrlContent('http://www.cnblogs.com/cutepig/default.html?page=%d&OnlyTitle=1'%pid)
        fpLog =open('log.txt','a')
        fb =findBlog(cont)
        print >>fpLog, '--------page', pid
        print '--------page', pid
        while 1:
            ret =fb.get()
            if ret is None: break
            [url, title] =ret
            print >>fpLog, ret
            #print ret    #why cannot print chinses?
            if not self.is_latest_written:
                logFile('cfg.txt', url)
                self.is_latest_written =1
                
            print title.decode('utf-8')
            
            if url==self.latest_url:
                is_latest =1
                break
                
            blogFname =url.replace(';','').replace('&','').replace('?','').replace(':','').replace('/','')+'.htm'
            logFile( blogFname, getUrlContent(url))
            appendFile( 'index2.htm', '<a href=%s>%s</a><br>\n'%(blogFname, title))
            
        fpLog.close()
        MyCmd('copy /y index2.htm+index.htm index.htm')
        return is_latest
        
    def read_all(self):
        pid =1
        while 1:
            is_latest =self.readPage(pid)
            if is_latest:
                break
            pid =pid+1
        
br =blogReader()
br.read_all()