[p4] Syncing only to labeled files using p4 command line

[Ken.Williams@thomson.com]

Sure, it's relatively easy to "figure out" how to do it, but not to
actually *do* it. =)  P4Win seems to just do "p4 fstat
//... at LastWorkingRevision", then for each selected file sync to the
appropriate revision individually.  It also seems to use the revision
number, not the label name, when syncing, though I might be wrong on
that.

In order to translate that to the command-line environment I'd have to
do some scripting, which is fine (something like "p4 files
... at LastWorkingRevision | perl -pe 's/(#\d+).*/$1/' | p4 -x- sync -n"
would probably be workable), but I thought I should be able to do it
directly with a revision spec for "p4 sync" directly.

 -Ken

> -----Original Message-----
> From: Jeff Grills [mailto:jgrills at junctionpoint.com] 
> Sent: Wednesday, May 03, 2006 1:20 PM
> To: Williams, Ken (TLR Corp); perforce-user at perforce.com
> Subject: RE: [p4] Syncing only to labeled files using p4 command line
> 
> 
> Following the "Teach a person to fish" philosophy...
> 
> If you know how to do something in p4win, it's relatively 
> easy to figure out
> how to do the same thing from the command line.  Right-click 
> the output box
> at the bottom of p4win and check the "Show P4 Commands" entry 
> (I also check
> the Timestamps and Status Messages entries as well, but 
> that's not necessary
> for this).  Now, any time you perform an operation in p4win, the
> corresponding command line command is also displayed.
> 
> j
> 
> -----Original Message-----
> From: perforce-user-bounces at perforce.com
> [mailto:perforce-user-bounces at perforce.com] On Behalf Of
> Ken.Williams at thomson.com
> Sent: Wednesday, May 03, 2006 11:57 AM
> To: perforce-user at perforce.com
> Subject: [p4] Syncing only to labeled files using p4 command line
> 
> Hi,
> 
> This strikes me as a question I should probably already know 
> the answer
> to, but I couldn't seem to find it from perusing the Tech Notes on
> labels, or the section of Chapter 6 in the docs on labels.
> 
> I've got a label called "LastWorkingRevision", which is a light-weight
> way for our developers to indicate the last working revision 
> of a set of
> files they're working on when they know the head revision is broken.
> The idea is that if syncing to head & building & testing fails, team
> members should be able to sync to head then sync to this label and
> probably get a working build.
> 
> Using p4win, we can sync to head, then right-click on the label and
> select "sync specific files to label" to achieve this effect. 
>  Using the
> p4 command-line client (on Linux) though, I'm not sure what 
> the easiest
> way is.  If we do "p4 sync ... at LastWorkingRevision", all files not
> mentioned in the label are deleted.
> 
> Any tips?
> 
>  -Ken
> 
>