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#!/usr/bin/env bash
PATH="..:$PATH"
# Load argsparse library.
. /usr/share/bash-argsparse/argsparse.sh
# You can also change the way options are set by defining a function
# named set_option_<optionname>.
argsparse_use_option option1 "An option." value type:hexa
set_option_option1() {
local option=$1
local value=$2
# You can do own stuff here. Whatever you want, including,
# transforming the value, calling other functions, performing some
# actions..
# E.g: you could enforce the 0x in front of a user-given
# hexadecimal value.
if [[ "$value" != 0x* ]]
then
value="0x$value"
fi
# This is the original argsparse setting action.
argsparse_set_option_with_value "$option" "$value"
}
# For options without value.
argsparse_use_option option2 "Another option."
set_option_option2() {
local option=$1
# Again, you can do whatever you want here.
: some command with some params.
# You dont have to do it, but it makes sense to call in the end
# the original argsparse action.
argsparse_set_option_without_value "$option"
}
# This is a way to re-implement a cumulative option if you're
# satisfied with the 'cumulative' property.
argsparse_use_option cumul "A cumulative option." value
all_cumul_values=()
set_option_cumul() {
local option=$1
local value=$2
# Append the value to the array.
all_cumul_values+=( "$value" )
# Doing this will prevent the argsparse_is_option_set test from
# returning false.
argsparse_set_option_with_value "$option" 1
}
#
printf -v argsparse_usage_description "%s\n" \
"A tutorial script teaching how to change the way options are set." \
"Try command lines such as:" \
" $0" \
" $0 -h" \
" $0 --option1 123a" \
" $0 --option2" \
" $0 --cumul first --cumul second --cumul other"
# Command line parsing is done here.
argsparse_parse_options "$@"
printf "Options reporting:\n"
# Simple reporting function.
argsparse_report
printf "End of argsparse report.\n\n"
printf "These are all the 'cumul' option values:\n"
i=0
for v in ${all_cumul_values[@]}
do
printf "Value #%d: %s\n" $((++i)) "$v"
done
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