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Fix format of PDF and XMP timezone offsets

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The way to specify timezone offsets differs between the PDF and XMP
specs, so hardcode the UTC offset instead of using `%z`. This also
avoids the possibility of embedding the more more granular timezones
supported by the datetime module but that are unsupported by either PDF
or XMP formats.
This commit is contained in:
Patrick McCarty 2023-06-10 17:28:02 -07:00
parent 9c3753ed2b
commit 85efd9a80a
1 changed files with 2 additions and 2 deletions
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4
src/img2pdf.py
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@ -723,7 +723,7 @@ class pdfdoc(object):
def datetime_to_pdfdate(dt): def datetime_to_pdfdate(dt):
dt_utc = dt.astimezone(tz=timezone.utc) dt_utc = dt.astimezone(tz=timezone.utc)
return dt_utc.strftime("%Y%m%d%H%M%S%z") return dt_utc.strftime("%Y%m%d%H%M%S+00'00'")
for k in ["Title", "Author", "Creator", "Producer", "Subject"]: for k in ["Title", "Author", "Creator", "Producer", "Subject"]:
v = locals()[k.lower()] v = locals()[k.lower()]
@ -754,7 +754,7 @@ class pdfdoc(object):
def datetime_to_xmpdate(dt): def datetime_to_xmpdate(dt):
dt_utc = dt.astimezone(tz=timezone.utc) dt_utc = dt.astimezone(tz=timezone.utc)
return dt_utc.strftime("%Y-%m-%dT%H:%M:%S%z") return dt_utc.strftime("%Y-%m-%dT%H:%M:%S+00:00")
self.xmp = b"""<?xpacket begin='\xef\xbb\xbf' id='W5M0MpCehiHzreSzNTczkc9d'?> self.xmp = b"""<?xpacket begin='\xef\xbb\xbf' id='W5M0MpCehiHzreSzNTczkc9d'?>
<x:xmpmeta xmlns:x='adobe:ns:meta/' x:xmptk='XMP toolkit 2.9.1-13, framework 1.6'> <x:xmpmeta xmlns:x='adobe:ns:meta/' x:xmptk='XMP toolkit 2.9.1-13, framework 1.6'>