dotfiles/.subbash/functions

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lsl () {
local DIR
DIR="$*"
if [ $# -lt 1 ]; then
DIR="$PWD"
fi
ls -lhFA --color=always "${DIR}" | less -R
}
workon() {
local ENV_NAME
ENV_NAME="$1"
if [ -z "$1" ]; then
ENV_NAME=$(basename "$(pwd)")
fi
source /opt/pythonenv/"$ENV_NAME"/bin/activate
}
cl() {
local DIR
DIR="$*"
if [ $# -lt 1 ]; then
DIR="$HOME"
fi
cd "${DIR}" && ls -F --color=auto
}
va() {
local activate_venv
if [ -f "./venv/bin/activate" ]; then
source "./venv/bin/activate"
return 0
fi
activate_venv="$(find -P . -maxdepth 3 -type f -name activate | sort | head -n 1)"
if [ -n "$activate_venv" ]; then
source "$activate_venv"
return 0
else
echo "va: error: virtual environment not found, use python3 -m virtualenv venv" >&2
return 1
fi
}
extract () {
if [ -z "$1" ]; then # if string non-zero
# display usage if no parameters given
echo "extract: error: usage: extract <path/file_name>.<zip|rar|bz2|gz|tar|tbz2|tgz|Z|7z|xz|ex|tar.bz2|tar.gz|tar.xz>"
return 2
fi
if ! [ -f "$1" ]; then # if file not exist
echo "extract: error: '$1' file does not exist" >&2
return 1
fi
local NAME
NAME=${1%%.*} # removes extension from filename
if [ -e "$NAME" ]; then
echo "extract: error: '$NAME' exists" >&2
return 1
fi
mkdir "$NAME" && cd "$NAME" || return 1
case $1 in
*.tar.bz2) tar xjf ../"$1" ;;
*.tar.gz) tar xzf ../"$1" ;;
*.tar.xz) tar xJf ../"$1" ;;
*.lzma) unlzma ../"$1" ;;
*.bz2) bunzip2 ../"$1" ;;
*.rar) unrar x -ad ../"$1" ;;
*.gz) gunzip ../"$1" ;;
*.tar) tar xf ../"$1" ;;
*.tbz2) tar xjf ../"$1" ;;
*.tgz) tar xzf ../"$1" ;;
*.zip) unzip ../"$1" ;;
*.Z) uncompress ../"$1" ;;
*.7z) 7z x ../"$1" ;;
*.xz) unxz ../"$1" ;;
*.exe) cabextract ../"$1" ;;
*) echo "extract: error: '$1' - unknown archive method" >&2 ;;
esac
cd ..
}
mcd () {
mkdir -p "$1" && cd "$1" || return
}
# Syntax-highlight JSON strings or files
# Usage: `json '{"foo":42}'` or `echo '{"foo":42}' | json`
json() {
if [ -t 0 ]; then # argument
python -m json.tool <<< "$*" | pygmentize -l javascript
else # pipe
python -m json.tool | pygmentize -l javascript
fi
}