changed end time to 17:30

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branch : aspn

src/exif_redater.py

@@ -0,0 +1,92 @@
+#!/usr/bin/python
+
+__version__ = '$Id: exif_redater.py 469 2008-03-05 06:09:01Z mn $'
+
+USAGE = "exif_redater.py\n\tredate .jpg/.jpeg files according to EXIF data"
+
+"""
+Iterates through a directory, reading the EXIF data from each jpg/jpeg file.
+Parses the date/time from EXIF data and if it differs from file
+modification date/time then changes file date/time
+
+author: Michal Niklas
+"""
+
+import os
+import os.path
+import sys
+import time
+
+import EXIF
+
+ALL_CNT = 0
+CHANGED_CNT = 0
+
+EXTENSIONS = ('.jpg', '.jpeg')
+
+def show_fdt(fdt):
+    """human readable format of file modification datetime"""
+    return time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime(fdt))
+
+
+# 2005:10:20 23:22:28
+def exif_info2time(ts):
+    """changes EXIF date ('2005:10:20 23:22:28') to number of seconds since 1970-01-01"""
+    tpl = time.strptime(ts, '%Y:%m:%d %H:%M:%S')
+    return time.mktime(tpl)
+
+
+def redate_by_exif(fn):
+    """reads EXIF from jpg/jpeg and if file datetime differs from EXIF changes file date"""
+    global ALL_CNT, CHANGED_CNT
+    ALL_CNT += 1
+    exif_time = None
+    s = os.stat(fn)
+    f = open(fn, 'rb')
+    try:
+        tags = EXIF.process_file(f)
+        dt_value = "%s" % tags["Image DateTime"]
+        file_time = s[8]
+        exif_time = exif_info2time(dt_value)
+    finally:
+        f.close()
+    if exif_time:
+        secs_diff = file_time - exif_time
+        MAX_DIFF = 130.0
+        if secs_diff > MAX_DIFF or secs_diff < -MAX_DIFF:
+            print "%s    %s -> %s" % (fn, show_fdt(file_time), show_fdt(exif_time))
+            os.utime(fn, (exif_time, exif_time))
+            CHANGED_CNT += 1
+
+
+def process_dir(_, dir_name, files):
+    """looks for .jpg/.jpeg file in dir"""
+    for fname in files:
+        can_change = False
+        fnl = fname.lower()
+        for ext in EXTENSIONS:
+            if fnl.endswith(ext):
+                can_change = True
+                break
+        if can_change:
+            fname = dir_name + '/' + fname
+            if os.path.isfile(fname):
+                try:
+                    redate_by_exif(fname)
+                except:
+                    pass
+
+
+def main():
+    os.path.walk('.', process_dir, None)
+    print '\nChecked: %d\nChanged %d\n' % (ALL_CNT, CHANGED_CNT)
+
+
+if '--version' in sys.argv:
+    print __version__
+else:
+    if __name__ == '__main__':
+        if '--help' in sys.argv:
+            print USAGE
+        else:
+            main()