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import re
from Config import *
import time
import urllib
import urllib2
import sys
import os
import random
from subprocess import Popen,PIPE,call
from Params import Params
import time
Request = urllib2.Request
urlencode = urllib.urlencode
urlopen = urllib2.urlopen
_max_filename_length = 20;
class Pb(object):
def __init__(self):
self._now = str(int(time.time()));
self.params = Params(classname=self.__class__.__name__, now=self._now);
self._files_created = []
self.commands = [];
self._working_dir = WORKING_DIR
def _filename_create(self, url=None, namepart="", extension=""):
if url:
_basename = os.path.basename(url)
namepart = re.split(r'\.', _basename)[0]
namepart = self._url_sanitize(namepart)[0:_max_filename_length]
name = ""
if namepart: name += "%s-" % namepart
name += "%s_%s" % (self.__class__.__name__, self._now)
if self.params.username : name += "_%s" % self.params.username
if extension: name += ".%s" % extension
return name
def _filepath_create(self, filename, directory=WORKING_DIR):
return os.path.join(directory, filename)
def _filename_filepath_create(self, url=None, namepart="", directory=WORKING_DIR, extension=""):
_filename = self._filename_create(url=url, namepart=namepart, extension=extension);
_filepath = self._filepath_create(_filename, directory=directory);
return _filename, _filepath
def _tempfilepath_create(self, namepart="temp", directory=WORKING_DIR, extension=""):
_filename = self._filename_create(namepart=namepart, extension=extension)
return self._filepath_create(_filename, directory=directory)
def _url_sanitize (self, s):
return re.sub(r'\W+', '', s)
def _call_cmd(self, cmd):
try:
cmd = map(lambda i: str(i), cmd)
call(cmd)
self.commands.append(" ".join(cmd));
except Exception:
raise Exception("Unable to call cmd {}".format(str(cmd)))
@staticmethod
def dimensions (filepath):
#works in lieu of a mimetype check (it reads the header as well)
ident = (Popen([BIN_IDENTIFY, filepath], stdout=PIPE).communicate()[0]).split(" ")
return ident[2].split("x")
def _width_and_height_set(self, filepath=None, width=DEFAULT_WIDTH, height=DEFAULT_HEIGHT):
if filepath:
self.width, self.height = Pb.dimensions(filepath)
return
self.width = width
self.height = height
@staticmethod
def file_size (filepath):
try:
return os.stat(filepath)[6]
except Exception as e:
sys.stderr.write("Couldn't determine filesize\n")
sys.stderr.write(str(e)+"\n")
raise;
def _file_read(self, filepath):
f = open(filepath, 'r');
data = f.read()
f.close()
return data
def err_warn(self, s):
sys.stderr.write("ERROR:{} - {}\n".format(self.__class__.__name__, s))
def _cleanup(self):
if not self._files_created: return
cmd = ["rm"]+self._files_created
self._call_cmd(cmd)
def err_fatal(self, s):
sys.stderr.write("ERROR[FATAL]:{} - {}\n".format(self.__class__.__name__, s))
sys.exit(1);
@classmethod
def example_run(cls, params=None, verbose=True):
example_params = params or cls.example_params
if not example_params:
raise AttributeError ("Must supply test params to test %s" % cls.__name__)
b = cls(**example_params)
b.create();
if verbose:
sys.stderr.write("generated %s\n" % b.filepath)
sys.stderr.write("files created %s\n" % b._files_created)
sys.stderr.write("commands %s" % " ".join(b.commands))
@staticmethod
def gif_frames(filepath):
try:
info = Popen([BIN_IDENTIFY,filepath], stdout=PIPE).communicate()[0]
frames = filter((lambda x: x), map(
(lambda x: x.split(" ")[0]),
(info).split('\n')
))
return frames
except Exception as e:
self.err_warn("couldn't get gif frames")
raise e;
def _choose_gif_frame(self, filepath):
_gif_frames = Pb.gif_frames(filepath)
frame = random.choice(_gif_frames)
self._call_cmd([BIN_CONVERT, frame, filepath])
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