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# vim:ft=zsh ts=2 sw=2 sts=2 et fenc=utf-8
################################################################
# Utility functions
# This file holds some utility-functions for
# the powerlevel9k-ZSH-theme
# https://github.com/bhilburn/powerlevel9k
################################################################
# Usage: set_default [OPTION]... NAME [VALUE]...
#
# Options are the same as in `typeset`.
function set_default() {
emulate -L zsh
local -a flags=(-g)
while true; do
case $1 in
--) shift; break;;
-*) flags+=$1; shift;;
*) break;
esac
done
local varname=$1
shift
if [[ -n ${(tP)varname} ]]; then
typeset $flags $varname
elif [[ "$flags" == *[aA]* ]]; then
eval "typeset ${(@q)flags} ${(q)varname}=(${(qq)@})"
else
typeset $flags $varname="$*"
fi
}
function _p9k_g_expand() {
local -a ts=("${=$(typeset -p $1)}")
shift ts
for x in "${ts[@]}"; do
[[ $x == -* ]] || break
# Don't change readonly variables. Ideally, we shouldn't modify any variables at all,
# but for now this will do.
[[ $x == -*r* ]] && return
done
typeset -g $1=${(g::)${(P)1}}
}
# Converts large memory values into a human-readable unit (e.g., bytes --> GB)
# Takes two arguments:
# * $size - The number which should be prettified
# * $base - The base of the number (default Bytes)
printSizeHumanReadable() {
typeset -F 2 size
size="$1"+0.00001
local extension
extension=('B' 'K' 'M' 'G' 'T' 'P' 'E' 'Z' 'Y')
local index=1
# if the base is not Bytes
if [[ -n $2 ]]; then
local idx
for idx in "${extension[@]}"; do
if [[ "$2" == "$idx" ]]; then
break
fi
index=$(( index + 1 ))
done
fi
while (( (size / 1024) > 0.1 )); do
size=$(( size / 1024 ))
index=$(( index + 1 ))
done
echo "$size${extension[$index]}"
}
# Determine if the passed segment is used in the prompt
#
# Pass the name of the segment to this function to test for its presence in
# either the LEFT or RIGHT prompt arrays.
# * $1: The segment to be tested.
segment_in_use() {
local key=$1
[[ -n "${POWERLEVEL9K_LEFT_PROMPT_ELEMENTS[(r)${key}]}" ||
-n "${POWERLEVEL9K_LEFT_PROMPT_ELEMENTS[(r)${key}_joined]}" ||
-n "${POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS[(r)${key}]}" ||
-n "${POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS[(r)${key}_joined]}" ]]
}
# Parse IP address from ifconfig on OSX and from IP on Linux
# Parameters:
# $1 - string The desired Interface
# $2 - string A root prefix for testing purposes
function p9k::parseIp() {
local desiredInterface="${1}"
if [[ -z "${desiredInterface}" ]]; then
desiredInterface="^[^ ]+"
fi
local ROOT_PREFIX="${2}"
if [[ "$OS" == "OSX" ]]; then
# Get a plain list of all interfaces
local rawInterfaces="$(${ROOT_PREFIX}/sbin/ifconfig -l 2>/dev/null)"
# Parse into array (split by whitespace)
local -a interfaces
interfaces=(${=rawInterfaces})
# Parse only relevant interface names
local pattern="${desiredInterface}[^ ]?"
local -a relevantInterfaces
for rawInterface in $interfaces; do
[[ "$rawInterface" =~ $pattern ]] && relevantInterfaces+=( $MATCH )
done
local newline=$'\n'
for interfaceName in $relevantInterfaces; do
local interface="$(${ROOT_PREFIX}/sbin/ifconfig $interfaceName 2>/dev/null)"
if [[ "${interface}" =~ "lo[0-9]*" ]]; then
continue
fi
# Check if interface is UP.
if [[ "${interface//${newline}/}" =~ "<([^>]*)>(.*)inet[ ]+([^ ]*)" ]]; then
local ipFound="${match[3]}"
local -a interfaceStates=(${(s:,:)match[1]})
if [[ "${interfaceStates[(r)UP]}" == "UP" ]]; then
echo "${ipFound}"
return 0
fi
fi
done
else
local -a interfaces
interfaces=( "${(f)$(${ROOT_PREFIX}/sbin/ip -brief -4 a show 2>/dev/null)}" )
local pattern="^${desiredInterface}[ ]+UP[ ]+([^/ ]+)"
for interface in "${(@)interfaces}"; do
if [[ "$interface" =~ $pattern ]]; then
echo "${match[1]}"
return 0
fi
done
fi
return 1
}
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