cparse.sh

#!/bin/bash
#
# NAME
#
#       cparse.sh
#
# SYNOPSIS
#
#       cparse.sh <cstring> <extension> "REPO" "CONTAINER" "MMN" "ENV"
#
# DESCRIPTION
#
#       cparse.sh parses a <cstring> of pattern:
#
#               [<repo>/]<container>[::<mainModuleName>[^<env>]]
#
#       and returns
#
#               <repo> <container> <mainModuleName><extension> <env>
#
# ARGS
#
# <string>
#
#       The container name string to parse.
#
# <extension>
#
#       An extension to append to the <mainModuleName>. Since most
#       ChRIS plugins are python modules, this usually is just ".py".
#
# RETURN
#
# REPO
#       if not passed in <repo>, defaults to env variable, $CREPO.
#
# CONTAINER
#
#       the <container> part of the string.
#
# MMN
#       if not passed, defaults to the <container> string, with
#       ".py" appended and sans a possibly leading "pl-".
#
# ENV
#       if not passed, defaults to "host", else <env>.
#
# EXAMPLE
#
#       cparse.sh "local/pl-dircopy::directoryCopy^moc" ".py"
#


CREPO=fnndsc

function cparse {
        pluginSpec=$1
        pluginExt=$2

        local __repo=$3
        local __container=$4
        local __mainModuleName=$5
        local __env=$6

        export pluginSpec=$pluginSpec
        export CREPO=$CREPO

l_parse=$(python3 - << EOF
import os

b_done          = False

str_pluginSpec  = os.environ['pluginSpec']
str_CREPO       = os.environ['CREPO']

# [<repo>/]
l_spec          = str_pluginSpec.split('/')
if len(l_spec) == 1:
        # No leading [<repo>/]
        str_repo        = str_CREPO
        str_remain      = l_spec[0]
else:
        # There is a leading [<repo>/]
        str_repo        = l_spec[0]
        str_remain      = l_spec[1]

# [^<env>]
l_spec          = str_remain.split('^')
if len(l_spec) == 1:
        # No trailing [^<env>]
        str_env         = 'host'
        str_remain      = l_spec[0]
else:
        # There is a trailing [^<env>]
        str_env         = l_spec[1]
        str_remain      = l_spec[0]

# [:<mainModuleName]
l_spec          = str_remain.split('::')
if len(l_spec) == 1:
        # No trailing [::<mainModuleName>]
        l_mmn           = l_spec[0].split('pl-')
        if len(l_mmn) == 1:
                str_mmn = l_spec[0]
        else:
                str_mmn = l_mmn[1]
        str_remain      = l_spec[0]
else:
        # There is a trailing [::<mainModuleName>]
        str_mmn         = l_spec[1]
        str_remain      = l_spec[0]

str_container           = str_remain

print("%s %s %s %s" % (str_repo, str_container, str_mmn, str_env))

EOF
)
        str_repo=$(echo $l_parse | awk '{print $1}')
        str_container=$(echo $l_parse | awk '{print $2}')
        str_mmn=$(echo $l_parse | awk '{print $3}')$pluginExt
        str_env=$(echo $l_parse | awk '{print $4}')
        eval $__repo="'$str_repo'"
        eval $__container="'$str_container'"
        eval $__mainModuleName="'$str_mmn'"
        eval $__env="'$str_env'"

}

function cparse_do {
        TESTNAME="local/pl-dircopy:directoryCopy^moc"

        cparse "$1" "$2" "REPO" "CONTAINER" "MMN" "ENV"

        echo $REPO
        echo $CONTAINER
        echo $MMN
        echo $ENV
}