Re: How To Modify PDF Metadata

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Re^2: How To Modify PDF Metadata by karlgoethebier (Abbot) on Jun 13, 2015 at 16:37 UTC
Thank you very much hippo for advice. For my rehabilitation i would like to say that i was a bit confused about this issue. I observed different behavior of my code on Win, Linux and Mac. And the various timestamp formats that one can pass to PDFs are a mess and put me over the edge. Perhaps i didn't see the basic problem and jumped to some wrong conclusions ~~;-)~~. For completeness: "$mday is the day of the month and $mon the month in the range 0..11..." `karls-mac-mini:monks karl$ perl -E '$day=(localtime)[3]; say $day;' 13 karls-mac-mini:monks karl$ perl -E '$month=(localtime)[4]; say $month; +' 5 karls-mac-mini:monks karl$ perl -E '$month=(localtime)[4]; say ++$mont +h;' 6 karls-mac-mini:monks karl$ date +%m 06` [download] D'oh! Update: I just run my modified code on a PDF created on Win: `CreationDate` was `06.06.2015 16:12` and now it is `06.06.2015 18:12`. This crap drives me insane. Edit: Minor changes. Ain't no fun no more. Best regards, Karl ŤThe Crux of the Biscuit is the Apostropheť	[reply] [d/l] [select]
Re^3: How To Modify PDF Metadata by Laurent_R (Canon) on Jun 13, 2015 at 18:50 UTC
Hmm, not sure to understand exactly your problem, but this two-hours difference may be the difference between localtime (time in the local time zone) and gmtime (UTC time), which is two hours in the time zone where both you and I live. Or did I miss the point?	[reply]
Re^4: How To Modify PDF Metadata by karlgoethebier (Abbot) on Jun 13, 2015 at 21:14 UTC
"...Or did I miss the point?" I guess not Laurent_R. Or i don't know it better for the moment. But please see my second update in my OP. Best regards, Karl ŤThe Crux of the Biscuit is the Apostropheť	[reply]
Re^2: How To Modify PDF Metadata by karlgoethebier (Abbot) on Jun 13, 2015 at 14:57 UTC
"...add 1 to the month." Update: ~~Well, i say `$m_month += 1;` but i still get `2015:01:07 14:46:51`~~ `karls-mac-mini:monks karl$ perl -MImage::ExifTool=:Public -E 'say Imag +eInfo("./pdf/a.pdf")->{CreateDate};' 2015:02:07 14:46:51 karls-mac-mini:monks karl$ ls ./pdf/a.pdf -rw-r--r--@ 1 karl karl 48K 7 Feb 14:46 ./pdf/a.pdf` [download] Best regards, Karl ŤThe Crux of the Biscuit is the Apostropheť	[reply] [d/l] [select]
Re^2: How To Modify PDF Metadata by Anonymous Monk on Jun 14, 2015 at 06:16 UTC
Time::Piece and DateTime is what you want to use for date math, none of this +1900 stuff	[reply]
Re^3: How To Modify PDF Metadata by karlgoethebier (Abbot) on Jun 14, 2015 at 17:52 UTC
"...what you want to use for date math..." Yes and no. Despite my annoying mistake: I used Date::Calc until someone told me it's API is inferior and that the new kid on the block is much cooler. So i crucify myself with the manpage. And why should i use .45 if .22 does the job less expensive: `karls-mac-mini:monks karl$ perl -MPOSIX=strftime -E 'say strftime("%Y +:%m:%d %H:%M:%S%z", localtime() );' 2015:06:14 19:42:10+0200` [download] Best regards, Karl ŤThe Crux of the Biscuit is the Apostropheť	[reply] [d/l]