The purpose of this function is to search for a file, primarily in "resources" directories. It might be used, for example, to find the name of bitmap files to use as widget button values. This program can be slow, depending upon how many directories it has to search. If you are looking for a *.pro file, it will probably be faster to search for the file with File_Which. This routine is primarily used to search for files without *.pro file extensions in places outside the normal IDL path. Namely in "resources" directories that may reside in the main IDL directory structure or may reside in your own application that you have built with IDL. The order of search is as follows:
1. In the current directory. 2. In the same directory as this file is found in. 3. In the directories rooted at the IDL resource directory (IDL_DIR/resource). 4. In the directories rooted at a resources directory found in the same directory this file is in. 5. In the directories rooted at a resourcs directory found in the same directory this file is in. 6. In the directories rooted at a resources directory found in the a directory one above the directory this file is in. 7. In the directories rooted at a resource directory found in the a directory one above the directory this file is in. 8. Anywhere in the IDL PATH. Note that a *.pro file *must* be in a directory for the directory to be on the IDL PATH.
- filename in required type=string
The root name of the file you are searching for. For example, 'arrow.bmp'. Do not use a full path name to the file.
- SUCCESS out optional type=boolean
On output, this keyword contains a 1 if the file was found, and a 0 otherwise.
Here is how to use this program:
IDL> Print, cgFindPathTo('gshhs_i.b', success=s) & Print, 'success: ', s /home/fanning/IDL/incubator/gshhs_i.b success: 1 IDL> Print, cgFindPathTo('dataviewer_splash.jpg', success=s) & print, 'success: ', s /home/fanning/IDL/dataviewer/resources/dataviewer_splash.jpg success: 1 IDL> Print, cgFindPathTo('arc.bmp', success=s) & Print, 'success: ', s /usr/local/rsi/idl70/resource/bitmaps/arc.bmp success: 1 IDL> Print, cgFindPathTo('toast_and_jam.txt', success=s) & Print, 'success: ', s success: 0
FANNING SOFTWARE CONSULTING:
David W. Fanning 1645 Sheely Drive Fort Collins, CO 80526 USA Phone: 970-221-0438 E-mail: email@example.com Coyote's Guide to IDL Programming: http://www.idlcoyote.com
Copyright (c) 2014, Fanning Software Consulting, Inc.
Written, 15 January 2014 by David W. Fanning.
|Modification date:||Fri Mar 27 11:07:39 2015|