I've been bit repeatedly by path separator issues when running my J6 code in J7 but a lot of that is because of my use of hard-coded backslashes.
On Fri, Nov 25, 2011 at 3:07 AM, Ric Sherlock <tikk...@gmail.com> wrote: > The following post describes how some of my thoughts on cross-version, > cross-OS support of path speparators. > > http://www.jsoftware.com/pipermail/beta/2010-June/004045.html > > On Fri, Nov 25, 2011 at 8:48 PM, Ian Clark <earthspo...@gmail.com> wrote: > > PATHSEP_j_ does not exist in J7, it seems. > > > > Back to the drawing board. I shall revert to the first technique I > > tried, shabby though it is: I'll actually look for '\' and if it's not > > there I'll assume '/'. > > > > > > > > On Tue, Nov 22, 2011 at 7:16 AM, bob therriault <bobtherria...@mac.com> > wrote: > >> 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? > >>> ---------------------------------------------------------------------- > >>> For information about J forums see http://www.jsoftware.com/forums.htm > >> > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > >> > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
