Re: [ptxdist] [PATCH v3 1/6] ptxd_lib_template: add ptxd_template_read_options

[Bastian Krause <bst@pengutronix.de>]

On 6/19/20 8:24 AM, Michael Olbrich wrote:
> On Wed, Jun 17, 2020 at 04:31:20PM +0200, Bastian Krause wrote:
>> Read a variable from user input, limited to a set of options.
>>
>> Example:
>>
>>   $ ptxd_template_read_options "select your option" TYPE "option A" "option B" "option C"
>>   ptxdist: select option by number:
>>   ptxdist: [1] option A
>>   ptxdist: [2] option B
>>   ptxdist: [3] option C
>>   ptxdist: select your option................: 2
>>   $ echo $TYPE
>>   option B
>>
>> The user can select 1, 2 or 3. Other input is not accepted.
>>
>> Signed-off-by: Bastian Krause <bst@pengutronix.de>
>> ---
>> Introduced in v3. Used to ask user about HSM type in a later commit.
>> ---
>>  scripts/lib/ptxd_lib_template.sh | 26 ++++++++++++++++++++++++++
>>  1 file changed, 26 insertions(+)
>>
>> diff --git a/scripts/lib/ptxd_lib_template.sh b/scripts/lib/ptxd_lib_template.sh
>> index f39e6e033..6b405763b 100644
>> --- a/scripts/lib/ptxd_lib_template.sh
>> +++ b/scripts/lib/ptxd_lib_template.sh
>> @@ -30,6 +30,32 @@ ptxd_template_read() {
>>      export "${2}"
>>  }
>>  export -f ptxd_template_read
>> +#
>> +# Read a variable from user input, limited to an array of options
>> +#
>> +# $1 prompt prefix
>> +# $2 variable name
>> +# $3..$n options
>> +#
>> +ptxd_template_read_options() {
>> +	local -a options=("${@:3}")
>> +	local i=1
>> +	echo "${PTXDIST_LOG_PROMPT}select option by number:"
>> +	for option in "${options[@]}"; do
>> +		echo "${PTXDIST_LOG_PROMPT}[${i}] ${option}"
>> +		((i++))
>> +	done
>> +	while : ; do
>> +		ptxd_template_read "${1}" chosen
>> +		[ -n "${chosen}" ] && [ "${chosen}" -gt 0 ] &&
>> +		[ "${chosen}" -le "${#options[@]}" ] &&
>> +		break
>> +
>> +		echo "${PTXDIST_LOG_PROMPT}invalid option"
>> +	done
>> +	export "${2}=${options[$chosen-1]}"
> 
> Wrong indention. I'll fix it when I apply this.

Thanks!

Regards,
Bastian

>> +}
>> +export -f ptxd_template_read_options
>>  
>>  ptxd_template_read_name() {
>>      ptxd_template_read "enter package name" package_name
>> -- 
>> 2.27.0
>>
>>
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>>
> 


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