dotfiles/.functions

#!/bin/bash

##################################################
# .functions
# ------------
# Based on the amazing work of Jess Frazelle
#
# :author: Levi Olson
# :date: 1 Feb 2018
# :version: 0.0.1
##################################################


# Simple calculator
calc() {
	local result=""
	result="$(printf "scale=10;%s\\n" "$*" | bc --mathlib | tr -d '\\\n')"
	#						└─ default (when `--mathlib` is used) is 20

	if [[ "$result" == *.* ]]; then
		# improve the output for decimal numbers
		# add "0" for cases like ".5"
		# add "0" for cases like "-.5"
		# remove trailing zeros
		printf "%s" "$result" |
			sed -e 's/^\./0./'  \
			-e 's/^-\./-0./' \
			-e 's/0*$//;s/\.$//'
	else
		printf "%s" "$result"
	fi
	printf "\\n"
}

# mkdir, cd into it
mkcd() {
    mkdir -p "$@"
    cd "$1"
}

# save path on cd
cd() {
    builtin cd $@
    pwd > ~/.last_dir
}


# Syntax-highlight JSON strings or files
# Usage: `json '{"foo":42}'` or `echo '{"foo":42}' | json`
json() {
	if [ -t 0 ]; then # argument
		python -mjson.tool <<< "$*" | pygmentize -l javascript
	else # pipe
		python -mjson.tool | pygmentize -l javascript
	fi
}

# Call from a local repo to open the repository on github/bitbucket in browser
# Modified version of https://github.com/zeke/ghwd
repo() {
	# Figure out github repo base URL
	local base_url
	base_url=$(git config --get remote.origin.url)
	base_url=${base_url%\.git} # remove .git from end of string

	# Fix git@github.com: URLs
	base_url=${base_url//git@github\.com:/https:\/\/github\.com\/}

	# Fix git://github.com URLS
	base_url=${base_url//git:\/\/github\.com/https:\/\/github\.com\/}

	# Fix git@bitbucket.org: URLs
	base_url=${base_url//git@bitbucket.org:/https:\/\/bitbucket\.org\/}

	# Fix git@gitlab.com: URLs
	base_url=${base_url//git@gitlab\.com:/https:\/\/gitlab\.com\/}

	# Validate that this folder is a git folder
	if ! git branch 2>/dev/null 1>&2 ; then
		echo "Not a git repo!"
		exit $?
	fi

	# Find current directory relative to .git parent
	full_path=$(pwd)
	git_base_path=$(cd "./$(git rev-parse --show-cdup)" || exit 1; pwd)
	relative_path=${full_path#$git_base_path} # remove leading git_base_path from working directory

	# If filename argument is present, append it
	if [ "$1" ]; then
		relative_path="$relative_path/$1"
	fi

	# Figure out current git branch
	# git_where=$(command git symbolic-ref -q HEAD || command git name-rev --name-only --no-undefined --always HEAD) 2>/dev/null
	git_where=$(command git name-rev --name-only --no-undefined --always HEAD) 2>/dev/null

	# Remove cruft from branchname
	branch=${git_where#refs\/heads\/}

	[[ $base_url == *bitbucket* ]] && tree="src" || tree="tree"
	url="$base_url/$tree/$branch$relative_path"


	echo "Calling $(type open) for $url"

	open "$url" &> /dev/null || (echo "Using $(type open) to open URL failed." && exit 1);
}

# Get colors in manual pages
man() {
	env \
		LESS_TERMCAP_mb="$(printf '\e[1;31m')" \
		LESS_TERMCAP_md="$(printf '\e[1;31m')" \
		LESS_TERMCAP_me="$(printf '\e[0m')" \
		LESS_TERMCAP_se="$(printf '\e[0m')" \
		LESS_TERMCAP_so="$(printf '\e[1;44;33m')" \
		LESS_TERMCAP_ue="$(printf '\e[0m')" \
		LESS_TERMCAP_us="$(printf '\e[1;32m')" \
		man "$@"
}

# get dbus session
dbs() {
	local t=$1
	if [[  -z "$t" ]]; then
		local t="session"
	fi

	dbus-send --$t --dest=org.freedesktop.DBus \
		--type=method_call	--print-reply \
		/org/freedesktop/DBus org.freedesktop.DBus.ListNames
}

# get the name of a x window
xname(){
	local window_id=$1

	if [[ -z $window_id ]]; then
		echo "Please specifiy a window id, you find this with 'xwininfo'"

		return 1
	fi

	local match_string='".*"'
	local match_qstring='"[^"\\]*(\\.[^"\\]*)*"' # NOTE: Adds 1 backreference

	# get the name
	xprop -id "$window_id" | \
		sed -nr \
		-e "s/^WM_CLASS\\(STRING\\) = ($match_qstring), ($match_qstring)$/instance=\\1\\nclass=\\3/p" \
		-e "s/^WM_WINDOW_ROLE\\(STRING\\) = ($match_qstring)$/window_role=\\1/p" \
		-e "/^WM_NAME\\(STRING\\) = ($match_string)$/{s//title=\\1/; h}" \
		-e "/^_NET_WM_NAME\\(UTF8_STRING\\) = ($match_qstring)$/{s//title=\\1/; h}" \
		-e "\${g; p}"
}