Features
Handles key/value pairs and flags in arbitrary order on the command line.
Includes validation and error messages for invalid or ill-formed command line arguments.
Is aware of help flags (--help, etc) by default.
Values passed as arguments can be character string, integer, real, or boolean.
Depends on kinds.f90 for specification of size of strings, integers, reals, and pointers.
Uses the F03 standard for accessing the command line arguments (
command_argument_countandget_command_argument).Tested with gfortran, ifort, and pgf90.
See cla_test.f90 for an example of usage.
Usage Example
use cla
...
call cla_init
call cla_register(key='--input',description='inputfile',kind=cla_char,default='../prm/grid')
call cla_register(key='-q', description='quiet flag',kind=cla_flag,default='f' )
call cla_validate
call cla_get('-q', lquiet) ! assigns the value .true. to if -q is present
call cla_get('--input',cfname) ! assigns input filename to cfname
...
Download
- Grab the compressed tar file
Contributors
Daan van Vugt (d.c.v.vugt ~at~ tue.nl), improved help message (2015-06-24).
Eli Ateljevich (Eli.Ateljevich ~at~ water.ca.gov), positional arguments and other enhancements (2015-01-03).
Acknowledgement
This software was developed with support from the Naval Research Laboratory (Grant #N00173-08-2-C015) and NASA (Grant #NNX13AH06G).