#!/usr/bin/python
#coding:utf8
#data:2013.07.03
#author: Finy


import re,urllib


#url='http://music.baidu.com'
#url='http://music.baidu.com/top/new'
url="http://music.baidu.com/top/dayhot"
save_url_file='c:/down.txt'


class music_download():
    def __init__(self,site_url):
        self.Music_site_url=site_url
        self.Music_id=[]
        self.Music_name=[]
        self.Music_author=[]
        self.openurl=[]


    def obthin_data(self):
        self.openurl=urllib.URLopener()
        headers = ('User-Agent','Mozilla/5.0 (Windows NT 5.1; rv:14.0) Gecko/20100101 Firefox/14.0.1')
        self.openurl.addheaders = [headers]
        data=self.openurl.open(self.Music_site_url).read()
        data=data.decode('utf8')
        return data
    
    def data_re(self,data):
        #data=self.obthin_data()
        #Music_id==re.findall(re.compile(r"'sid': '(.*)', 'sname'"),data)
        Music_name=re.findall(re.compile(r"'sname': '(.*)', 'author'"),data)
        Music_author=re.findall(re.compile(r"'author': '(.*)' }"),data)
        Music_id=re.findall(re.compile(r"'sid': '(.*)', 'sname'"),data)
        return Music_name,Music_author,Music_id
        
    def main(self,save_url_file):
        urlsava=open(save_url_file,'w')
        data=self.obthin_data()
        self.Music_name,self.Music_author,self.Music_id=self.data_re(data)
             
        for i in range(len(self.Music_id)):
            print str(i) + ':            '+ self.Music_name[i] + '-' + self.Music_author[i]
            
            page_data=self.openurl.open('http://music.baidu.com/song/%s/download'% str(self.Music_id[i])).read()
            try:
                downurl=re.findall(re.compile(r'href="/data/music/file\?link=(.*)"  id="'),page_data)[1]
            except:
                print '这个无法下载'
            urlsava.write(downurl+'\n')
            print '%s music file download Ing ..................'%self.Music_name[i]
            urllib.urlretrieve(downurl,self.Music_name[i]+'-'+self.Music_author[i]+'.mp3')
            print '-'*50
        urlsava.close()




if __name__ == '__main__':
    baidu_music_down=music_download(url)
    baidu_music_down.main('download.txt')