PATHSEP_j_ may be what you are looking for Ian. It is set at startup from the
j602\bin\profile.ijs and is referenced in numerous verbs such as jhostpath_z_
and jpath_z_
Cheers, bob
On 2011-11-21, at 10:24 PM, Ian Clark wrote:
> Does J (all versions, maybe stripped-down) maintain a dependable noun
> in _z_ or _j_ giving the file path separator, viz '/' or '\' ?
>
> Or should I always simply use? --
> IFWIN{'/\'
>
> Does anyone know of a J-supported platform that uses anything other
> than '/' or '\' ? (The Mac used to use ':' but now accepts Unix's '/'
> pretty well everywhere.)
>
> And does IFWINCE imply IFWIN?
>
> I'm using tricks all over the place that empirically work -- but
> what's the set-in-stone convention for a widely-distributed utility?
>
> Here's the technique I propose to standardize on, for any utility
> script which needs to know where it resides:
>
> MYPATH=: 3 : 0 ''
> NB. returns directory containing this script
> NB. also assigns two globals:
> NB. WHEREAMI -the folder in question
> NB. SEP -the platform-dependent separator
> ws=. [: 'Not from script'"_`({ 4!:3@(0&$))@.(0&<:) [: 4!:4 [: < >
> WHEREAMI=: '<UNSET>' NB. needed for ws to work with
> z=. >ws 'WHEREAMI'
> SEP=: '/\' {~ '\' e. z NB. '\' present--> MSWin path conventions
> WHEREAMI=: (>: z i: SEP) {.z
> )
>
> Any comments on its generality, style, redundancy, potential to break, etc?
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