# -*- coding: Windows-1251 -*- ''' rename_to_exiftime.py Rename JPEG files according to EXIF-date using PIL If global variable CREATE_HARDLINK is set, script creates Windows (XP) batch file for creating hardlink version of source files Author: Denis Barmenkov Modified by: Jorge Barnaby Improved rename process on duplicates Copyright: this code is free, but if you want to use it, please keep this multiline comment along with function source. Thank you. 2009-02-10 18:14 ''' import Image import os import re import sys import time CREATE_HARDLINK=0 def extract_jpeg_exif_time(jpegfn): if not os.path.isfile(jpegfn): return None try: im = Image.open(jpegfn) if hasattr(im, '_getexif'): exifdata = im._getexif() ctime = exifdata[0x9003] #print ctime return ctime except: _type, value, traceback = sys.exc_info() print "Error:\n%r", value return None def get_exif_prefix(jpegfn): ctime = extract_jpeg_exif_time(jpegfn) if ctime is None: return None ctime = ctime.replace(':', '') ctime = re.sub('[^\d]+', '_', ctime) return ctime def rename_jpeg_file(fn): if not os.path.isfile(fn): return 0 ext = os.path.splitext(fn)[1].lower() if ext not in ['.jpg', '.jpeg', '.jfif', '.nef', '.png']: return 0 path, base = os.path.split(fn) #print base # status prefix = get_exif_prefix(fn) if prefix is None: print '%s could not be renamed' % (base) return 0 if base.startswith(prefix): print '%s file already renamed' % (base) return 0 # file already renamed to this prefix exists = True index = 0 while exists: if index == 0: new_name = prefix + ext # + '_' + base else: new_name = prefix + '_' + str(index) + ext new_full_name = os.path.join(path, new_name) exists = os.path.isfile(new_full_name) index = index + 1 if CREATE_HARDLINK: f = open('CREATE_HARDLINK.cmd', 'a') f.write('fsutil hardlink create "%s" "%s"\n' % (new_full_name, fn)) f.close() else: try: os.rename(fn, new_full_name) print '%s renamed to %s' % (base, new_name) except: print 'ERROR rename %s --> %s' % (fn, new_full_name) return 0 return 1 def rename_jpeg_files_in_dir(dn): names = os.listdir(dn) count=0 for n in names: file_path = os.path.join(dn, n) count += rename_jpeg_file(file_path) return count if __name__=='__main__': try: path = sys.argv[1] except IndexError: print '''Usage: rename_to_exiftime.py filename.[jpeg|jpg|jfif] or rename_to_exiftime.py dirname ''' sys.exit(1) if os.path.isfile(path): rename_jpeg_file(path) elif os.path.isdir(path): count = rename_jpeg_files_in_dir(path) print '%d file(s) renamed.' % count else: print 'ERROR: path not found: %s' % path