mirror of
https://github.com/romkatv/powerlevel10k.git
synced 2024-12-24 08:01:57 +00:00
231 lines
7.1 KiB
Bash
Executable file
231 lines
7.1 KiB
Bash
Executable file
# vim:ft=zsh ts=2 sw=2 sts=2 et fenc=utf-8
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################################################################
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# Utility functions
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# This file holds some utility-functions for
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# the powerlevel9k-ZSH-theme
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# https://github.com/bhilburn/powerlevel9k
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################################################################
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# Usage: set_default [OPTION]... NAME [VALUE]...
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#
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# Options are the same as in `typeset`.
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function set_default() {
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local -a flags=(-g)
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while true; do
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case $1 in
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--) shift; break;;
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-*) flags+=$1; shift;;
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*) break;
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esac
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done
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local varname=$1
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shift
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if [[ -v $varname ]]; then
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typeset $flags $varname
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elif [[ "$flags" == *[aA]* ]]; then
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eval "typeset ${(@q)flags} ${(q)varname}=(${(qq)@})"
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else
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typeset $flags $varname="$*"
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fi
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}
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function _p9k_g_expand() {
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local -a ts=("${=$(typeset -p $1)}")
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shift ts
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for x in "${ts[@]}"; do
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[[ $x == -* ]] || break
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# Don't change readonly variables. Ideally, we shouldn't modify any variables at all,
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# but for now this will do.
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[[ $x == -*r* ]] && return
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done
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typeset -g $1=${(g::)${(P)1}}
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}
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# Converts large memory values into a human-readable unit (e.g., bytes --> GB)
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# Takes two arguments:
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# * $size - The number which should be prettified
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# * $base - The base of the number (default Bytes)
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printSizeHumanReadable() {
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typeset -F 2 size
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size="$1"+0.00001
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local extension
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extension=('B' 'K' 'M' 'G' 'T' 'P' 'E' 'Z' 'Y')
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local index=1
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# if the base is not Bytes
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if [[ -n $2 ]]; then
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local idx
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for idx in "${extension[@]}"; do
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if [[ "$2" == "$idx" ]]; then
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break
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fi
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index=$(( index + 1 ))
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done
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fi
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while (( (size / 1024) > 0.1 )); do
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size=$(( size / 1024 ))
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index=$(( index + 1 ))
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done
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echo "$size${extension[$index]}"
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}
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# Determine if the passed segment is used in the prompt
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#
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# Pass the name of the segment to this function to test for its presence in
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# either the LEFT or RIGHT prompt arrays.
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# * $1: The segment to be tested.
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segment_in_use() {
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local key=$1
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[[ -n "${POWERLEVEL9K_LEFT_PROMPT_ELEMENTS[(r)$key]}" ||
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-n "${POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS[(r)$key]}" ]]
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}
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################################################################
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# Given a directory path, truncate it according to the settings.
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# Parameters:
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# * $1 Path: string - the directory path to be truncated
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# * $2 Length: integer - length to truncate to
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# * $3 Delimiter: string - the delimiter to use
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# * $4 From: string - "right" | "middle". If omited, assumes right.
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function truncatePath() {
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# if the current path is not 1 character long (e.g. "/" or "~")
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if (( ${#1} > 1 )); then
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# convert $2 from string to integer
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2=$(( $2 ))
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# set $3 to "" if not defined
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[[ -z $3 ]] && 3="" || 3=$(echo -n $3)
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# set $4 to "right" if not defined
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[[ -z $4 ]] && 4="right"
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# create a variable for the truncated path.
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local trunc_path
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# if the path is in the home folder, add "~/" to the start otherwise "/"
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[[ $1 == "~"* ]] && trunc_path='~/' || trunc_path='/'
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# split the path into an array using "/" as the delimiter
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local paths=$1
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paths=(${(s:/:)${paths//"~\/"/}})
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# declare locals for the directory being tested and its length
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local test_dir test_dir_length
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# do the needed truncation
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case $4 in
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right)
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# include the delimiter length in the threshhold
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local threshhold=$(( $2 + ${#3} ))
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# loop through the paths
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for (( i=1; i<${#paths}; i++ )); do
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# get the current directory value
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test_dir=$paths[$i]
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test_dir_length=${#test_dir}
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# only truncate if the resulting truncation will be shorter than
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# the truncation + delimiter length and at least 3 characters
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if (( $test_dir_length > $threshhold )) && (( $test_dir_length > 3 )); then
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# use the first $2 characters and the delimiter
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trunc_path+="${test_dir:0:$2}$3/"
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else
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# use the full path
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trunc_path+="${test_dir}/"
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fi
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done
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;;
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middle)
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# we need double the length for start and end truncation + delimiter length
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local threshhold=$(( $2 * 2 ))
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# create a variable for the start of the end truncation
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local last_pos
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# loop through the paths
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for (( i=1; i<${#paths}; i++ )); do
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# get the current directory value
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test_dir=$paths[$i]
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test_dir_length=${#test_dir}
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# only truncate if the resulting truncation will be shorter than
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# the truncation + delimiter length
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if (( $test_dir_length > $threshhold )); then
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# use the first $2 characters, the delimiter and the last $2 characters
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last_pos=$(( $test_dir_length - $2 ))
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trunc_path+="${test_dir:0:$2}$3${test_dir:$last_pos:$test_dir_length}/"
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else
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# use the full path
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trunc_path+="${test_dir}/"
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fi
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done
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;;
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esac
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# return the truncated path + the current directory
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echo $trunc_path${1:t}
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else # current path is 1 character long (e.g. "/" or "~")
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echo $1
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fi
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}
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# Search recursively in parent folders for given file.
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function upsearch () {
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if [[ "$PWD" == "$HOME" || "$PWD" == "/" ]]; then
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echo "$PWD"
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elif test -e "$1"; then
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pushd .. > /dev/null
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upsearch "$1"
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popd > /dev/null
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echo "$PWD"
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else
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pushd .. > /dev/null
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upsearch "$1"
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popd > /dev/null
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fi
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}
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# Parse IP address from ifconfig on OSX and from IP on Linux
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# Parameters:
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# $1 - string The desired Interface
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# $2 - string A root prefix for testing purposes
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function p9k::parseIp() {
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local desiredInterface="${1}"
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if [[ -z "${desiredInterface}" ]]; then
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desiredInterface="^[^ ]+"
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fi
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local ROOT_PREFIX="${2}"
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if [[ "$OS" == "OSX" ]]; then
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# Get a plain list of all interfaces
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local rawInterfaces="$(${ROOT_PREFIX}/sbin/ifconfig -l 2>/dev/null)"
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# Parse into array (split by whitespace)
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local -a interfaces
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interfaces=(${=rawInterfaces})
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# Parse only relevant interface names
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local pattern="${desiredInterface}[^ ]?"
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local -a relevantInterfaces
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for rawInterface in $interfaces; do
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[[ "$rawInterface" =~ $pattern ]] && relevantInterfaces+=( $MATCH )
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done
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local newline=$'\n'
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for interfaceName in $relevantInterfaces; do
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local interface="$(${ROOT_PREFIX}/sbin/ifconfig $interfaceName 2>/dev/null)"
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if [[ "${interface}" =~ "lo[0-9]*" ]]; then
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continue
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fi
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# Check if interface is UP.
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if [[ "${interface//${newline}/}" =~ "<([^>]*)>(.*)inet[ ]+([^ ]*)" ]]; then
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local ipFound="${match[3]}"
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local -a interfaceStates=(${(s:,:)match[1]})
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if [[ "${interfaceStates[(r)UP]}" == "UP" ]]; then
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echo "${ipFound}"
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return 0
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fi
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fi
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done
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else
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local -a interfaces
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interfaces=( "${(f)$(${ROOT_PREFIX}/sbin/ip -brief -4 a show 2>/dev/null)}" )
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local pattern="^${desiredInterface}[ ]+UP[ ]+([^/ ]+)"
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for interface in "${(@)interfaces}"; do
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if [[ "$interface" =~ $pattern ]]; then
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echo "${match[1]}"
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return 0
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fi
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done
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fi
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return 1
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}
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