使用Python编写一个在Linux下实现截图分享的脚本的教程

引子

Linux下不支持QQ等功能丰富的IM,虽然可以通过wine运行QQ2012,但是还是喜欢在gtalk群中聊天,gtalk群不支持图片方式,这就要靠我们大家自己来解决了,eleven开放了一个Image上传和显示接口,提供了使用curl来解决,但是我们公司的网络使用squid禁止了curl的访问,所以整天看他们这么爽的分享图片我也不甘心阿,所以就使用Python写了一个分享图片的脚本
实现

使用scrot截图,然后使用urllib2库上传图片,如果存在PyQt4库则会将结果放到剪贴板上,如果不存在则输出,自行复制
代码

#!/usr/bin/env python
# -*- coding:utf-8 -*-
#
# Author : cold
# E-mail : wh_linux@126.com
# Date : 13/01/21 09:54:39
# Desc : 贴代码和图片
#
import urllib2, json
import mimetools
import mimetypes
import itertools

__host__ = "http://eleveni386.7axu.com"

class Form(object):
 def __init__(self):
  self.form_fields = []
  self.files = []
  self.boundary = mimetools.choose_boundary()
  self.content_type = "application/x-www-form-urlencoded"
  return

 def get_content_type(self):
  return self.content_type

 def add_field(self, name, value):
  self.form_fields.append((name, value))
  return

 def add_file(self, fieldname, filename, fileHandle, mimetype=None):
  body = fileHandle.read()
  if mimetype is None:
   mimetype = ( mimetypes.guess_type(filename)[0]
       or
       'applicatioin/octet-stream')
  self.files.append((fieldname, filename, mimetype, body))
  self.content_type = 'multipart/form-data; boundary=%s' % self.boundary

  return

 def __str__(self):
  parts = []
  part_boundary = '--' + self.boundary

  parts.extend(
   [ part_boundary,
    'Content-Disposition: form-data; name="%s"' % name,
    '',
    value,
    ]
   for name, value in self.form_fields)
  if self.files:
   parts.extend([
    part_boundary,
    'Content-Disposition: form-data; name="%s"; filename="%s"' %\
    (field_name, filename),
    'Content-Type: %s' % content_type,
    '',
    body,
   ] for field_name, filename, content_type, body in self.files)

  flattened = list(itertools.chain(*parts))
  flattened.append('--' + self.boundary + '--')
  flattened.append('')
  return '\r\n'.join(flattened)

class HttpHelper(object):
 def __init__(self, url = None, form = None, method = 'GET'):
  self._url = url
  self._form = form
  self._body = str(form)
  self._method = method
  self._dst_url = None
  if url:
   self.make_request()

 def make_request(self):
  url = self._url
  if not self._url.startswith('http://'):
   url = 'http://' + self._url
  self.request = urllib2.Request(url)
  if self._form:
   self.add_header("Content-Type", self._form.get_content_type())
   self.add_header("Content-Length", len(self._body))
   self.request.add_data(self._body)

 def add_header(self, key, val):
  self.request.add_header(key, val)

 def change(self, url, params = {}, method = 'GET'):
  self._url = url
  self._params = params
  self._method = method
  self.make_request()

 def open(self):
  response = urllib2.urlopen(self.request)
  content = response.read()
  self._dst_url = response.geturl()
  try:
   return json.loads(content)
  except:
   return content

if __name__ == "__main__":
 import argparse
 import os
 parser = argparse.ArgumentParser()
 parser.add_argument(dest="path", nargs="?")
 args = parser.parse_args()
 if args.path:
  path = args.path
 else:
  path = r"/tmp/tmpscrot.png"
  os.system("scrot -s {0}".format(path))
 form = Form()
 filename = os.path.split(path)[-1]
 form.add_file(fieldname='mypic', filename=filename,
     fileHandle=open(path))
 http = HttpHelper( __host__ + '/Image/', form)
 url = http.open()
 try:
  from PyQt4.QtGui import QApplication
  app = QApplication([])
  cb = QApplication.clipboard()
  cb.setText(url)
 except:
  print url

安装

将上面代码保存一个文件,放在PATH路径里,赋予执行权限即可
使用

默认的不跟图片地址则会截图,截图完毕后自动分享,如安装了PyQt4库则会将结果放到剪贴板,如没有则输出结果.如果脚本给了图片路径参数则上传给定路径的图片