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import hachoir_core.error
import hachoir_core.cmd_line
import hachoir_parser
import hachoir_metadata
import hachoir_editor
import sys
import os
import hachoir_parser.image
__version__ = "0.1"
__author__ = "jvoisin"
class file():
def __init__(self, realname, filename, parser, editor):
self.meta = {}
self.clean = False
self.filename = filename
self.realname = realname
self.parser = parser
self.editor = editor
self.meta = self.__fill_meta()
def __fill_meta(self):
metadata = {}
try:
meta = hachoir_metadata.extractMetadata(self.parser)
except hachoir_core.error.HachoirError, err:
print("Metadata extraction error: %s" % err)
if not meta:
print("Unable to extract metadata from the file %s" % self.filename)
sys.exit(1)
for title in meta:
#fixme i'm so dirty
if title.values != []: #if the field is not empty
value = ""
for item in title.values:
value = item.text
metadata[title.key] = value
return metadata
def is_clean(self):
'''
Return true if the file is clean from any compromizing meta
'''
return self.clean
def remove_all(self):
'''
Remove all the files that are compromizing
'''
for key, field in self.meta.iteritems():
if self._should_remove(key):
print "BLEH" #DEBUG
#__remove(self, key)
#self.clean = True
def __remove(self, field):
'''
Remove the given file
'''
del self.editor[field]
def get_meta(self):
'''
return a dict with all the meta of the file
'''
return self.meta
def _should_remove(self, field):
'''
return True if the field is compromizing
abstract method
'''
raise NotImplementedError()
class JpegStripper(file):
def _should_remove(self, field):
return False
strippers = {
hachoir_parser.image.JpegFile: JpegStripper,
}
def create_class_file(name):
'''
return a $FILETYPEStripper() class,
corresponding to the filetype of the given file
'''
if not(os.path.isfile(name)): #check if the file exist
print("Error: %s is not a valid file" % name)
sys.exit(1)
filename = ""
realname = name
filename = hachoir_core.cmd_line.unicodeFilename(name)
parser = hachoir_parser.createParser(filename, realname)
if not parser:
print("Unable to parse the file %s : sorry" % filename)
sys.exit(1)
editor = hachoir_editor.createEditor(parser)
try:
'''this part is a little tricky :
stripper_class will receice the name of the class $FILETYPEStripper,
(which herits from the "file" class), based on the editor
of given file (name)
'''
stripper_class = strippers[editor.input.__class__]
except KeyError:
print("Don't have stripper for file type: %s" % editor.description)
sys.exit(1)
return stripper_class(realname, filename, parser, editor)
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