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xdistfile.pro
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1997-07-08
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; $Id: xdistfile.pro,v 1.6 1997/01/15 03:11:50 ali Exp $
;
; Copyright (c) 1994-1997, Research Systems, Inc. All rights reserved.
; Unauthorized reproduction prohibited.
PRO XDistfile, FILENAME, SUBDIRECTORY, _EXTRA=extra
;+
; NAME:
; XDISTFILE
;
; PURPOSE:
; Displays ASCII text files from the IDL distribution. Unlike
; XDISPLAYFILE, this routine understands that under VMS, IDL
; routines are packed in VMS text libraries.
;
; CATEGORY:
; Widgets.
;
; CALLING SEQUENCE:
; XDISTFILE, Filename, Subdirectory
;
; INPUTS:
; Filename: A scalar string that contains the filename of the file
; to display NOT INCLUDING the '.pro' extension or any
; path information.
; Subdirectory: Subdirectory information in the style of the
; FILEPATH user library routine.
;
; KEYWORD PARAMETERS:
; Any keywords allowed by XDISPLAYFILE are also allowed.
;
; OUTPUTS:
; No explicit outputs. A file viewing widget is created.
;
; SIDE EFFECTS:
; Triggers the XMANAGER if it is not already in use.
;
; RESTRICTIONS:
; None.
;
; PROCEDURE:
; This is a thin wrapper over the XDISPLAYFILE routine.
; In the case of VMS text libraries, the last element of the
; SUBDIRECTORY argument is taken to be the TLB file name, and
; FILENAME is actually the module name in that library.
;
; MODIFICATION HISTORY:
; 1 June 1994, AB
;-
if (!version.os eq 'vms') then begin
n = n_elements(subdirectory)
subn = n
if (subn lt 1) then message,'SUBDIRECTORY doesn''t contain enough elements.'
module = subdirectory[n-1]
subd = subdirectory[0:n-subn]
n=n-1
library=filepath(module+'.tlb', SUBDIRECTORY=subd)
;
; WARNING:
;
; READ_VMSTLB is undocumented and likely to disappear or change
; radiacally in future IDL releases. Use at your own risk.
;
text = READ_VMSTLB(library, filename, count=c)
if (c ne 0) then begin
title = library + ' (' + STRUPCASE(filename) + '.PRO)'
XDISPLAYFILE, TEXT=TEXT, title=title, _extra=extra
return
endif
endif
XDISPLAYFILE, FILEPATH(filename + '.pro', SUBDIRECTORY=SUBDIRECTORY), $
_extra=extra
END