forked from josch/img2pdf
Convert creation/modification dates to UTC (fixes #155)
Ensure that timezones are correctly interpreted in the input by calling `.astimezone()` as appropriate on datetime objects, and store the resulting date fields as UTC. One could argue that datetimes in the local timezone be stored in the PDF, but then the date string handling becomes more complicated; the PDF and XMP date specs both use the `Z` suffix to indicate UTC time, but other +/- offsets require different syntax between the two specs.
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1 changed files with 4 additions and 4 deletions
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@ -36,7 +36,7 @@ if hasattr(GifImagePlugin, "LoadingStrategy"):
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# TiffImagePlugin.DEBUG = True
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from PIL.ExifTags import TAGS
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from datetime import datetime
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from datetime import datetime, timezone
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from jp2 import parsejp2
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from enum import Enum
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from io import BytesIO
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@ -722,7 +722,7 @@ class pdfdoc(object):
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self.writer.docinfo = PdfDict(indirect=True)
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def datetime_to_pdfdate(dt):
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return dt.strftime("%Y%m%d%H%M%SZ")
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return dt.astimezone(tz=timezone.utc).strftime("%Y%m%d%H%M%SZ")
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for k in ["Title", "Author", "Creator", "Producer", "Subject"]:
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v = locals()[k.lower()]
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@ -732,7 +732,7 @@ class pdfdoc(object):
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v = PdfString.encode(v)
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self.writer.docinfo[getattr(PdfName, k)] = v
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now = datetime.now()
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now = datetime.now().astimezone()
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for k in ["CreationDate", "ModDate"]:
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v = locals()[k.lower()]
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if v is None and nodate:
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@ -752,7 +752,7 @@ class pdfdoc(object):
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)
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def datetime_to_xmpdate(dt):
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return dt.strftime("%Y-%m-%dT%H:%M:%SZ")
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return dt.astimezone(tz=timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ")
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self.xmp = b"""<?xpacket begin='\xef\xbb\xbf' id='W5M0MpCehiHzreSzNTczkc9d'?>
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<x:xmpmeta xmlns:x='adobe:ns:meta/' x:xmptk='XMP toolkit 2.9.1-13, framework 1.6'>
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