diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/pyexiv2.py | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/pyexiv2.py b/src/pyexiv2.py index 129b854..e4eae75 100644 --- a/src/pyexiv2.py +++ b/src/pyexiv2.py @@ -69,6 +69,82 @@ import time import datetime import re +class FixedOffset(datetime.tzinfo): + + """ + Fixed offset from a local time east from UTC. + + Represent a fixed (positive or negative) offset from a local time in hours + and minutes. + + Public methods: + utcoffset -- return offset of local time from UTC, in minutes east of UTC + dst -- return the daylight saving time (DST) adjustment, here always 0 + tzname -- return a string representation of the offset with format '±%H%M' + """ + + def __init__(self, offsetSign='+', offsetHours=0, offsetMinutes=0): + """ + Constructor. + + Construct a FixedOffset object from an offset sign ('+' or '-') and an + offset absolute value expressed in hours and minutes. + No check on the validity of those values is performed, it is the + responsibility of the caller to pass correct values to the constructor. + + Keyword arguments: + offsetSign -- the sign of the offset ('+' or '-') + offsetHours -- the absolute number of hours of the offset + offsetMinutes -- the absolute number of minutes of the offset + """ + self.offsetSign = offsetSign + self.offsetHours = offsetHours + self.offsetMinutes = offsetMinutes + + def utcoffset(self, dt): + """ + Return offset of local time from UTC, in minutes east of UTC. + + Return offset of local time from UTC, in minutes east of UTC. + If local time is west of UTC, this should be negative. + The value returned is a datetime.timedelta object specifying a whole + number of minutes in the range -1439 to 1439 inclusive. + + Keyword arguments: + dt -- the datetime.time object representing the local time + """ + totalOffsetMinutes = self.offsetHours * 60 + self.offsetMinutes + if self.offsetSign == '-': + totalOffsetMinutes = -totalOffsetMinutes + return datetime.timedelta(minutes = totalOffsetMinutes) + + def dst(self, dt): + """ + Return the daylight saving time (DST) adjustment. + + Return the daylight saving time (DST) adjustment. + In this implementation, it is always nil, and the method return + datetime.timedelta(0). + + Keyword arguments: + dt -- the datetime.time object representing the local time + """ + return datetime.timedelta(0) + + def tzname(self, dt): + """ + Return a string representation of the offset. + + Return a string representation of the offset with format '±%H%M'. + + Keyword arguments: + dt -- the datetime.time object representing the local time + """ + string = self.offsetSign + string = string + ('%02d' % self.offsetHours) + string = string + ('%02d' % self.offsetMinutes) + return string + def UndefinedToString(undefined): """ Convert an undefined string into its corresponding sequence of bytes. @@ -220,6 +296,8 @@ class Image(libpyexiv2.Image): Public methods: getExifTagValue -- get the value associated to a key in EXIF metadata setExifTagValue -- set the value associated to a key in EXIF metadata + getIptcTagValue -- get the value associated to a key in IPTC metadata + setIptcTagValue -- set the value associated to a key in IPTC metadata """ def getExifTagValue(self, key): |