To the QGIS developers list -
I have a goal of making a fully portable Windows edition of QGIS. "Fully
portable" means that I simply can install QGIS by copying the QGIS
program directory to a location on the users PC and start QGIS by
double clicking on the QGIS.bat file in the "..\bin" directory.
I've reached 95% of my target by using the OSGeo4W installation as a
template and making some modification the the start-up bat file. Mostly
by using the --configpath qualifier to 1) redefine the location of the
QGIS user directory .qgis2 and 2) not using the registry to save option
values.
By using the --configpath qualifier QGIS creates and uses the
.qgis2\QGIS\QGIS2.ini file to store option values normally located in
the registry. Some of these values are path definitions:
example:
Configuration\SAGA_FOLDER=C:/OSGeo4W/apps\\saga
Configuration\GRASS_WIN_SHELL=C:/OSGeo4W/apps\\msys
Configuration\R_SCRIPTS_FOLDER=C:\\OSGeo4W\\.qgis2\\processing\\rscripts
I would like to use environment variables as part of the path definition
in the ini file like this:
Configuration\SAGA_FOLDER=%OSGEO4W_HOME%/apps\\saga
Configuration\GRASS_WIN_SHELL=%OSGEO4W_HOME%/apps\\msys
Configuration\R_SCRIPTS_FOLDER=%QGIS_USERDIR%\\processing\\rscripts
(OSGEO4W_HOME and QGIS_USERDIR is environment variables, that contains
the path for the QGIS program directory and the QGIS user directory)
The problem is, that QGIS doesn't interpret the %......% as a
environment variable and replace it with the value of the variable but
simply interprets it literally resulting in paths containing "%" - signs
and environment variable names.
Is there a method to get QGIS to interpret the environment variable and
replace it with the content of the variable ? Or should a put it on the
wish list in the bug tracker ?
Regards
Bo Victor Thomsen
AestasGIS
Denmark
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