[reportlab-users] Bug in invariant?

[Robin Becker]

Thanks for this report; certainly didn't know about the timezone issue. I'll try 
and get this into the repository today.


Roberto Alsina wrote:

> Hello, when trying to generate PDFs with invariant=1 in local_rl_config.py so 

> that tests don't fail because of timestamps in rst2pdf we found that files 

> still were different when generated by two persons.

> 

> And the difference was this:

> 

> $ ls -l 65* 

> -rw-r--r-- 1 ralsina users 16703 2009-10-31 16:34 65_patrick.pdf 

> -rw-r--r-- 1 ralsina users 16703 2009-10-31 16:35 65_roberto.pdf 

> 

> The only difference between them is... 

> 

>  /CreationDate (D:20000101000000+06'00') 

> 

>  /CreationDate (D:20000101000000+03'00')

> 

> As you can see, the date is being fixed, but the timezone is not. I suspect 

> when the support for gmt offset was added, this slipped.

> 

> The fix is to change PDFDate like this (or something similar):

> 

> class PDFDate:

>     __PDFObject__ = True

>     # gmt offset now suppported

>     def __init__(self, invariant=rl_config.invariant, dateFormatter=None):

>         if invariant:

>             now = (2000,01,01,00,00,00,0)

>             self.dhh = 0; self.dmm = 0

>         else:

>             import time

>             now = tuple(time.localtime(_getTimeStamp())[:6])

>             from time import timezone

>             self.dhh, self.dmm = timezone // 3600, (timezone % 3600) % 60

>         self.date = now[:6]

>         self.dateFormatter = dateFormatter

> 

>     def format(self, doc):

>         dfmt = self.dateFormatter or (

>                 lambda yyyy,mm,dd,hh,m,s:

>                     "D:%04d%02d%02d%02d%02d%02d%+03d'%02d'" % 

> (yyyy,mm,dd,hh,m,s,self.dhh,self.dmm))

>         return format(PDFString(dfmt(*self.date)), doc)

> 

> 



-- 
Robin Becker