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# -*- coding: utf-8 -*-

#!/usr/bin/python

#!/bin/bash

# ---------------------------------------------------------- #

# This is a script which can change background automatically #

# every time the system starts. #

# author: Huang Zhenyang #

# email: 745125931@qq.com #

# ---------------------------------------------------------- #

# ----- Import ----- #

import os

import re

import urllib

import time

import socket

# --- End Import --- #

class Spider(object):

"""

This is the spider to get the img from being

"""

def __init__( self, img_matched_pattern_para, url_para, file_name_para ):

"""

init function

:param img_matched_pattern_para: the pattern to match a img

:param url_para: url to crawler

:param file_name_para: file name

"""

self.img_matched_pattern = img_matched_pattern_para

self.url = url_para

self.file_name = file_name_para

def get_img(self):

"""

download the image

:return:

"""

html = self.get_html()

img_pos = re.search(self.img_matched_pattern, html)

img_page_href = self.url + img_pos.group()[6:-7] + "download"

urllib.urlretrieve(img_page_href, self.file_name)

def get_html(self):

"""

return the html

:return: page's html <type 'str'>

"""

page = urllib.urlopen(self.url)

html = page.read()

return html

class Controller(object):

"""

This is the controller to control the spider's parameters.

"""

def __init__(self, pattern_href_para, path_para, url_para, img_max_num_para):

"""

:param pattern_href_para: href's match pattern

:param path_para: path to save images

:param url_para: url

:param img_max_num_para: max number that the

"""

self.pattern_href = pattern_href_para

self.path = path_para

self.url = url_para

self.img_max_num = img_max_num_para

self.file_name = ""

self.init_file_name = "0.jpg"

self.file_extension_name = ".jpg"

def judge(self):

"""

judge if the number of images is grater than img_max_num.

if true, delete all of them and then run spider, else directly run spider.

Also, we should set the file name.

:return:

"""

root = None

_dirs = None

files = None

for root, _dirs, files in os.walk(self.path, True):

pass

files_len = len(files)

if files_len == 10:

for i in range(0, 10):

os.remove(root + files[i])

self.file_name = self.path + self.init_file_name

else:

self.file_name = self.path + str(files_len) + self.file_extension_name

def run_spider(self):

"""

run spider.

TODO: This function needs to be modified in the future which makes these two class coupling too much.

:return:

"""

# In case user's computer hasn't connect the internet.

for i in range(0, 60):

try:

spider = Spider(self.pattern_href, self.url, self.file_name)

spider.get_img()

break

except IOError as e:

print "Connection error: %s" % e

time.sleep(60)

continue

except Exception as e:

print "Connection error: %s" % e

time.sleep(60)

continue

c_path = '"file://' + self.file_name + '"' # absolute path

# call system command to change the gnome background

os.system('gsettings set org.gnome.desktop.background picture-uri ' + c_path)

print "gsettings set org.gnome.desktop.background picture-uri " + c_path

if __name__ == '__main__':

pattern_href = r'href="/photo/.*?" rel="external nofollow" '

path = '/home/hzy/图片/backgrounds/'

url = 'https://bing.ioliu.cn/'

img_max_num = 10

controller = Controller(pattern_href, path, url, img_max_num)

controller.judge()

controller.run_spider()

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[Desktop Entry]

Name=autoChangeBackgroundImg

Comment=Python Program

Exec=python /home/hzy/Script/autoChangeBackgroundImg/autoChangeBackgroundImg.py

Icon=/home/hzy/Script/autoChangeBackgroundImg/autoChangeBackgroundImg.png

Terminal=false

MultipleArgs=false

Type=Application

Categories=Application;Development;

StartupNotify=true