[jamming] String deconstrution. - Karl...@cisco.com - com.perforce.jamming

6 messages in com.perforce.jamming[jamming] String deconstrution.

From	Sent On	Attachments
Koloseike	09 Mar 2000 07:33
Lanc...@scmlabs.com	09 Mar 2000 09:01
Matt...@corp.phone.com	09 Mar 2000 10:27
Dian...@yahoo.com	09 Mar 2000 16:54
Karl...@cisco.com	10 Mar 2000 09:30
Karl...@cisco.com	13 Mar 2000 13:50

Subject:	[jamming] String deconstrution.
From:	Karl...@cisco.com (Karl...@cisco.com)
Date:	03/10/2000 09:30:21 AM
List:	com.perforce.jamming

I've attached an alternative approach that we use here. It has the add'l feature of being able to recognize $(TOP) and omit it from the gristing. So:

foo/bar/foo.c becomes <foo!bar>foo.c foo/bar becomes <foo>bar (no file vs dir check) /abs/path/foo/bar/foo.c becomes <foo!bar>foo.c (assuming $(TOP) = /abs/path)

klash | | Adults are nothing but used up children. .|. .|. -- writer Theodore Geisel .|||. .|||. (aka Dr. Seuss) .:::::::.:::::::.

In message <2000...@squeaker.phone.com>, Matt Armstrong writes:

On Thu, Mar 09, 2000 at 10:34:21AM -0500, Koloseike, Jason wrote:

Jam is quite capable of constructing strings, but I can't find anything related to pulling a string apart like strtok().

I would love to be able to create a rule that generates a grist from an actual directory specification.

Rather than:

makeGrist gristVar : dir1 dir2 dir3 ;

I would like to be able write a function:

myMakeGrist gristVar : /dir1/dir2/dir3 ;

Am I missing something? I've all through the documentation and haven't seen anything releated to pulling strings apart.

If you want to split at the directory separator, then you're in luck. The :P variable expansion modifier gives just enough functionality to get what you want. Here is what I've written:

# # splitDir var : dir ; # # Split variable 'dir' containing a filename into its component # parts and assign it to 'var'. # rule splitDir { $(1) = ; splitDirImpl $(1) : $(2) ; }

rule splitDirImpl { local parent ; parent = $(2:P) ;

if $(parent) && $(parent) != $(SLASH) && $(parent) != $(2) { splitDirImpl $(1) : $(parent) ; $(1) += $(2:BS) ; } else { $(1) += $(2) ; } }