On 11/28/2012 06:28 AM, Vivek Goyal wrote:
> On Mon, Nov 26, 2012 at 10:38:47AM +0800, Dave Young wrote:
>>
>>
>> For cmdline argument with numeric value, add a new function getargnum
>> It will get proper value with default value as $1, max value as $2.
>> valid result will be echo to stdout, for nul or value not valid it will just
>> echo the default value.
>>
>> Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
>> ---
>> modules.d/99base/dracut-lib.sh | 19 +++++++++++++++++++
>> 1 file changed, 19 insertions(+)
>>
>> --- dracut.orig/modules.d/99base/dracut-lib.sh
>> +++ dracut/modules.d/99base/dracut-lib.sh
>> @@ -167,6 +167,25 @@ getargbool() {
>> return 0
>> }
>>
>> +# getargnum <defaultval> <maxval> <args...>
> ^^^^^^
> Is above one arg or multiple args. I thought in one call we will resolve
> the value of one parameter?
It is one arg. will s/args.../arg
>
>> +# Will echo the arg if it's in range [0 - maxval].
>
> You might want to consider passing in minval instead of assuming it
> is always 0. It just makes function more generic.
Make sense. I would like to assume the arg as a number >=0 even with the
minval added which means minval should be >=0.
>
> Thanks
> Vivek
>
>> +# If it's not set or it's not valid, will set it <defaultval>.
>> +getargnum() {
>> + local _b
>> + unset _b
>> + local _default
>> + local _max
>> + _default=$1; shift
>> + _max=$1; shift
>> + _b=$(getarg "$@")
>> + [ $? -ne 0 -a -z "$_b" ] && _b=$_default
>> + if [ -n "$_b" ]; then
>> + [[ "$_b" =~ ^[0-9]+$ ]] && _b=$(($_b)) && \
>> + [[ $_b -ge 0 && $_b -le $_max ]] && echo $_b && return
>> + fi
>> + echo $_default
>> +}
>> +
>> _dogetargs() {
>> debug_off
>> local _o _found _key
--
Thanks
Dave
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