/usr/share/gnudatalanguage/coyote/ncdf_isvalidfile.pro is in gdl-coyote 2016.11.13-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | ;+
; NAME:
; NCDF_ISVALIDFILE
;
; PURPOSE:
;
; Utility routine to determine if a file is a valid netCDF file or not.
; Returns a 1 if the file is valid and a 0 otherwise.
;
; AUTHOR:
;
; FANNING SOFTWARE CONSULTING
; David Fanning, Ph.D.
; 1645 Sheely Drive
; Fort Collins, CO 80526 USA
; Phone: 970-221-0438
; E-mail: david@idlcoyote.com
; Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
;
; CATEGORY:
;
; Utility.
;
; CALLING SEQUENCE:
;
; result = NCDF_IsValidFile(filename)
;
; INPUTS:
;
; filename: The name of a filename to open to see if it is a valid netCDF file.
;
; RETURN VALUE:
;
; result: A 1 if the file can be opened as a netCDF file. A 0 otherwise.
;
; KEYWORDS:
;
; None.
;
; ALGORITHM:
;
; Try to open the file. If you fail, it is not an netCDF file.
;
; MODIFICATION HISTORY:
;
; Written by: David W. Fanning, 21 February 2010.
;-
;******************************************************************************************;
; Copyright (c) 2010, by Fanning Software Consulting, Inc. ;
; All rights reserved. ;
; ;
; Redistribution and use in source and binary forms, with or without ;
; modification, are permitted provided that the following conditions are met: ;
; ;
; * Redistributions of source code must retain the above copyright ;
; notice, this list of conditions and the following disclaimer. ;
; * Redistributions in binary form must reproduce the above copyright ;
; notice, this list of conditions and the following disclaimer in the ;
; documentation and/or other materials provided with the distribution. ;
; * Neither the name of Fanning Software Consulting, Inc. nor the names of its ;
; contributors may be used to endorse or promote products derived from this ;
; software without specific prior written permission. ;
; ;
; THIS SOFTWARE IS PROVIDED BY FANNING SOFTWARE CONSULTING, INC. ''AS IS'' AND ANY ;
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ;
; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT ;
; SHALL FANNING SOFTWARE CONSULTING, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, ;
; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED ;
; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; ;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ;
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ;
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS ;
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ;
;******************************************************************************************;
FUNCTION NCDF_IsValidFile, filename
Compile_Opt idl2
Catch, theError
IF theError NE 0 THEN BEGIN
Catch, /CANCEL
RETURN, 0
ENDIF
; Need a filename.
IF N_Elements(filename) EQ 0 THEN BEGIN
filename = Dialog_Pickfile(TITLE='Select a File', FILTER=['*.nc','*.ncdf'])
IF filename EQ "" THEN RETURN, 0
ENDIF
; Try to open the file. If you succeed, file is valid.
fileID = NCDF_Open(filename)
NCDF_Close, fileID
RETURN, 1
END
|