I'm putting this thing in my source(s)... (right, for now it's just one, plus the test scripts).
REVISION = (function(x) substring(x, first=7, last=nchar(x)-2))("$Rev: 8727 $")
but how do "real" R programmers do?
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86answers:
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A:
That is a pretty good solution. A regular expression may be more robust in case you fewer or more digits: swap the beginnning $Rev : and the trailing $ for empty strings and you should have the revision left.
The only problem with the per-file properties is that they only update when this file itself is updated by subversion.
For that reason (and many others), consider making a local package. Your DESCRIPTION file will a) change often enough for the new version number and b) can simply be extended by new fields you simply add e.g.
Revision: $Rev$
You can read the content from R via read.dcf() after which you can then do your trick of stripping the dollar signs and colon, or use a regular expression.
Dirk Eddelbuettel
2009-12-11 13:10:22
did not yet know the read.dcf function. quite useful, thanks!
mariotomo
2009-12-11 13:20:38
the problem "which is the highest revision number in this subdirectory" is probably best solved with a script that will put the highest number into a variable (defined in a file not under version control). but allow me to extend the question...
mariotomo
2009-12-11 13:25:28
not really extended, it's a different question... http://stackoverflow.com/questions/1888151
mariotomo
2009-12-11 13:43:12
about reg.ex and my solution. I tested it for un-substituted "$Rev$" as well as for less or more digits.
mariotomo
2009-12-11 14:03:55
Does `svnversion` in the directory give the revision of the directory itself? If and when you run `svn update`, that should be the current revision. Or am I misunderstanding what you are after?
Dirk Eddelbuettel
2009-12-11 15:25:35
in Python I got used to having a __version__ variable in each module. so after importing a module x.y, I can ask x.y.__version__ and have an idea of whether I'm using the latest version of the module. I'm after something similar in R. so: is there a way to associate a library to its version, so that this association is visible in the environment when I loaded the library?
mariotomo
2009-12-14 08:07:54