add function getargnum
For cmdline argument with numeric value, add a new function getargnum It will get proper value with default value as $1, min value as $2, max value as $3, and param name as $4. valid result will be echo to stdout. for nul or value not valid it will just echo the default value. Note: The values should be >=0 [v1->v2]: add arg <minval> [v2->v3]: do not use bash string match =~ Signed-off-by: Dave Young <dyoung@redhat.com>master
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6cb77ea91f
commit
a08ea34aba
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@ -181,6 +181,35 @@ getargbool() {
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return 0
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}
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isdigit() {
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case "$1" in
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*[!0-9]*|"") return 1;;
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esac
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return 0
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}
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# getargnum <defaultval> <minval> <maxval> <arg>
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# Will echo the arg if it's in range [minval - maxval].
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# If it's not set or it's not valid, will set it <defaultval>.
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# Note all values are required to be >= 0 here.
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# <defaultval> should be with [minval -maxval].
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getargnum() {
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local _b
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unset _b
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local _default _min _max
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_default=$1; shift
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_min=$1; shift
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_max=$1; shift
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_b=$(getarg "$1")
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[ $? -ne 0 -a -z "$_b" ] && _b=$_default
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if [ -n "$_b" ]; then
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isdigit "$_b" && _b=$(($_b)) && \
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[ $_b -ge $_min ] && [ $_b -le $_max ] && echo $_b && return
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fi
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echo $_default
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}
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_dogetargs() {
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debug_off
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local _o _found _key
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