add fish support

#       Date:    2019-03-25

#       Description: Added C-Shell support.

#

#       Author:  K.-Michael Aye

#       Date:    2019-08-09

#       Description: Added support for fish shell.

#

##########################################################################################################

# There are still a lot of Python 2 installations out there, and if people don't have

# their conda environment set up properly, the error message they'll get will be hard

# to decipher.  This might help:

assert( sys.version_info >= (3,2) ) # Must be using Python 3.2 or later

assert sys.version_info >= (3, 2)  # Must be using Python 3.2 or later

# This just wraps and reports on the directory creation:

def mkdir(p):

    if os.path.exists( p ): print( 'Tried to create '+p+', but it already exists.' )

    if os.path.exists(p):

        print("Tried to create " + p + ", but it already exists.")

    else:

        os.makedirs(p)

        print( 'Created '+p )

        print("Created " + p)

    return

# Set up and then parse the command line:

parser = argparse.ArgumentParser(description=__doc__)

parser.add_argument('-d','--data-dir',

                    default=os.environ['CONDA_PREFIX']+'/data',

                    help='ISIS3 Data Directory, default: %(default)s' )

parser.add_argument('-t','--test-dir',

                    default=os.environ['CONDA_PREFIX']+'/testData',

                    help='ISIS3 Test Data Directory, default: %(default)s')

parser.add_argument(

    "-d",

    "--data-dir",

    default=os.environ["CONDA_PREFIX"] + "/data",

    help="ISIS3 Data Directory, default: %(default)s",

)

parser.add_argument(

    "-t",

    "--test-dir",

    default=os.environ["CONDA_PREFIX"] + "/testData",

    help="ISIS3 Test Data Directory, default: %(default)s",

)

args = parser.parse_args()

mkdir(args.test_dir)

# Create the conda activation and deactivation directories:

activate_dir   = os.environ['CONDA_PREFIX']+'/etc/conda/activate.d'

deactivate_dir = os.environ['CONDA_PREFIX']+'/etc/conda/deactivate.d'

activate_dir = os.environ["CONDA_PREFIX"] + "/etc/conda/activate.d"

deactivate_dir = os.environ["CONDA_PREFIX"] + "/etc/conda/deactivate.d"

mkdir(activate_dir)

mkdir(deactivate_dir)

# Write the files that manage the ISIS3 environments:

activate_vars_sh   =   activate_dir+'/env_vars.sh'

deactivate_vars_sh = deactivate_dir+'/env_vars.sh'

activate_vars_csh   =   activate_dir+'/env_vars.csh'

deactivate_vars_csh = deactivate_dir+'/env_vars.csh'

with open( activate_vars_sh, mode='w' ) as a:

activate_vars_sh = activate_dir + "/env_vars.sh"

deactivate_vars_sh = deactivate_dir + "/env_vars.sh"

activate_vars_csh = activate_dir + "/env_vars.csh"

deactivate_vars_csh = deactivate_dir + "/env_vars.csh"

activate_vars_fish = activate_dir + "/env_vars.fish"

deactivate_vars_fish = deactivate_dir + "/env_vars.fish"

# bash/zsh

with open(activate_vars_sh, mode="w") as a:

    script = """#!/bin/sh

export ISISROOT={}

export ISIS3DATA={}

export ISIS3TESTDATA={}

""".format(os.environ['CONDA_PREFIX'], args.data_dir, args.test_dir)

""".format(

        os.environ["CONDA_PREFIX"], args.data_dir, args.test_dir

    )

    a.write(script)

print( 'Wrote '+activate_vars_sh )

print("Wrote " + activate_vars_sh)

with open( deactivate_vars_sh, mode='w' ) as d:

with open(deactivate_vars_sh, mode="w") as d:

    script = """#!/bin/sh

unset ISISROOT

unset ISIS3DATA

unset ISIS3TESTDATA

"""

    d.write(script)

print( 'Wrote '+deactivate_vars_sh )

print("Wrote " + deactivate_vars_sh)

with open( activate_vars_csh, mode='w' ) as a:

# csh

with open(activate_vars_csh, mode="w") as a:

    script = """#!/bin/csh

setenv ISISROOT {}

setenv ISIS3DATA {}

setenv ISIS3TESTDATA {}

source $CONDA_PREFIX/scripts/tabCompletion.csh

""".format(os.environ['CONDA_PREFIX'], args.data_dir, args.test_dir)

""".format(

        os.environ["CONDA_PREFIX"], args.data_dir, args.test_dir

    )

    a.write(script)

print( 'Wrote '+activate_vars_csh )

print("Wrote " + activate_vars_csh)

with open( deactivate_vars_csh, mode='w' ) as d:

with open(deactivate_vars_csh, mode="w") as d:

    script = """#!/bin/sh

unsetenv ISISROOT

unsetenv ISIS3DATA

unsetenv ISIS3TESTDATA

"""

    d.write(script)

print( 'Wrote '+deactivate_vars_csh )

print("Wrote " + deactivate_vars_csh)

# fish

with open(activate_vars_fish, mode="w") as a:

    script = """#!/usr/bin/env fish

set -gx ISISROOT {}

set -gx ISIS3DATA {}

set -gx ISIS3TESTDATA {}

""".format(

        os.environ["CONDA_PREFIX"], args.data_dir, args.test_dir

    )

    a.write(script)

print("Wrote " + activate_vars_fish)

with open(deactivate_vars_csh, mode="w") as d:

    script = """#!/bin/sh

set -e ISISROOT

set -e ISIS3DATA

set -e ISIS3TESTDATA

"""

    d.write(script)

print("Wrote " + deactivate_vars_fish)