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import base64
import io
import os
import sys
import requests
from six.moves.urllib.parse import urlparse
try:
from PIL import Image
except ImportError:
Image = None
from ...errors import PillowNotInstalled
THUMB_SIZE = (340, 210)
class DataURIConverter(object):
def __init__(self, location):
self.check_pillow_installed()
self.location = location
def check_pillow_installed(self):
if Image is None:
raise PillowNotInstalled()
def __call__(self):
if os.path.exists(self.location):
with open(self.location, "rb") as fp:
return self._encode(self.resize_and_convert(fp).read())
elif self.is_url():
content = requests.get(self.location).content
fp = io.BytesIO()
fp.write(content)
fp.seek(0)
else:
raise IOError("{} not found".format(self.location))
def resize_and_convert(self, fp):
im = Image.open(fp)
im.thumbnail(THUMB_SIZE)
out = io.BytesIO()
im.save(out, format='png')
out.seek(0)
return out
def is_py3(self):
return sys.version_info[0] == 3
def is_url(self):
return self.location is not None and urlparse(self.location).scheme in ['http', 'https']
def _encode(self, content):
if self.is_py3():
data64 = base64.b64encode(content).decode("ascii")
data64 = content.encode('base64').replace("\n", "")
return data64
def data_uri_from(location):
return DataURIConverter(location)()
Anaconda-Platform /
anaconda-client
