.functions

# Simple calculator
function calc() {
	local result="";
	result="$(printf "scale=10;$*\n" | bc --mathlib | tr -d '\\\n')";
	#                       └─ default (when `--mathlib` is used) is 20
	#
	if [[ "$result" == *.* ]]; then
		# improve the output for decimal numbers
		printf "$result" |
		sed -e 's/^\./0./'        `# add "0" for cases like ".5"` \
		    -e 's/^-\./-0./'      `# add "0" for cases like "-.5"`\
		    -e 's/0*$//;s/\.$//';  # remove trailing zeros
	else
		printf "$result";
	fi;
	printf "\n";
}

# Create a new directory and enter it
function md() {
	mkdir -p "$@" && cd "$_";
}

# Change working directory to the top-most Finder window location
function cdf() { # short for `cdfinder`
	cd "$(osascript -e 'tell app "Finder" to POSIX path of (insertion location as alias)')";
}

# Create a .tar.gz archive, using `zopfli`, `pigz` or `gzip` for compression
function targz() {
	local tmpFile="${@%/}.tar";
	tar -cvf "${tmpFile}" --exclude=".DS_Store" "${@}" || return 1;

	size=$(
		stat -f"%z" "${tmpFile}" 2> /dev/null; # OS X `stat`
		stat -c"%s" "${tmpFile}" 2> /dev/null # GNU `stat`
	);

	local cmd="";
	if (( size < 52428800 )) && hash zopfli 2> /dev/null; then
		# the .tar file is smaller than 50 MB and Zopfli is available; use it
		cmd="zopfli";
	else
		if hash pigz 2> /dev/null; then
			cmd="pigz";
		else
			cmd="gzip";
		fi;
	fi;

	echo "Compressing .tar using \`${cmd}\`…";
	"${cmd}" -v "${tmpFile}" || return 1;
	[ -f "${tmpFile}" ] && rm "${tmpFile}";
	echo "${tmpFile}.gz created successfully.";
}

# Determine size of a file or total size of a directory
function fs() {
	if du -b /dev/null > /dev/null 2>&1; then
		local arg=-sbh;
	else
		local arg=-sh;
	fi
	if [[ -n "$@" ]]; then
		du $arg -- "$@";
	else
		du $arg .[^.]* *;
	fi;
}

# Use Git’s colored diff when available
hash git &>/dev/null;
if [ $? -eq 0 ]; then
	function diff() {
		git diff --no-index --color-words "$@";
	}
fi;

# Create a data URL from a file
function dataurl() {
	local mimeType=$(file -b --mime-type "$1");
	if [[ $mimeType == text/* ]]; then
		mimeType="${mimeType};charset=utf-8";
	fi
	echo "data:${mimeType};base64,$(openssl base64 -in "$1" | tr -d '\n')";
}

# Create a git.io short URL
function gitio() {
	if [ -z "${1}" -o -z "${2}" ]; then
		echo "Usage: \`gitio slug url\`";
		return 1;
	fi;
	curl -i http://git.io/ -F "url=${2}" -F "code=${1}";
}

# Start an HTTP server from a directory, optionally specifying the port
function server() {
	local port="${1:-8000}";
	sleep 1 && open "http://localhost:${port}/" &
	# Set the default Content-Type to `text/plain` instead of `application/octet-stream`
	# And serve everything as UTF-8 (although not technically correct, this doesn’t break anything for binary files)
	python -c $'import SimpleHTTPServer;\nmap = SimpleHTTPServer.SimpleHTTPRequestHandler.extensions_map;\nmap[""] = "text/plain";\nfor key, value in map.items():\n\tmap[key] = value + ";charset=UTF-8";\nSimpleHTTPServer.test();' "$port";
}

# Start a PHP server from a directory, optionally specifying the port
# (Requires PHP 5.4.0+.)
function phpserver() {
	local port="${1:-4000}";
	local ip=$(ipconfig getifaddr en1);
	sleep 1 && open "http://${ip}:${port}/" &
	php -S "${ip}:${port}";
}

# Compare original and gzipped file size
function gz() {
	local origsize=$(wc -c < "$1");
	local gzipsize=$(gzip -c "$1" | wc -c);
	local ratio=$(echo "$gzipsize * 100 / $origsize" | bc -l);
	printf "orig: %d bytes\n" "$origsize";
	printf "gzip: %d bytes (%2.2f%%)\n" "$gzipsize" "$ratio";
}

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

# Run `dig` and display the most useful info
function digga() {
	dig +nocmd "$1" any +multiline +noall +answer;
}

# UTF-8-encode a string of Unicode symbols
function escape() {
	printf "\\\x%s" $(printf "$@" | xxd -p -c1 -u);
	# print a newline unless we’re piping the output to another program
	if [ -t 1 ]; then
		echo ""; # newline
	fi;
}

# Decode \x{ABCD}-style Unicode escape sequences
function unidecode() {
	perl -e "binmode(STDOUT, ':utf8'); print \"$@\"";
	# print a newline unless we’re piping the output to another program
	if [ -t 1 ]; then
		echo ""; # newline
	fi;
}

# Get a character’s Unicode code point
function codepoint() {
	perl -e "use utf8; print sprintf('U+%04X', ord(\"$@\"))";
	# print a newline unless we’re piping the output to another program
	if [ -t 1 ]; then
		echo ""; # newline
	fi;
}

# Show all the names (CNs and SANs) listed in the SSL certificate
# for a given domain
function getcertnames() {
	if [ -z "${1}" ]; then
		echo "ERROR: No domain specified.";
		return 1;
	fi;

	local domain="${1}";
	echo "Testing ${domain}…";
	echo ""; # newline

	local tmp=$(echo -e "GET / HTTP/1.0\nEOT" \
		| openssl s_client -connect "${domain}:443" -servername "${domain}" 2>&1);

	if [[ "${tmp}" = *"-----BEGIN CERTIFICATE-----"* ]]; then
		local certText=$(echo "${tmp}" \
			| openssl x509 -text -certopt "no_aux, no_header, no_issuer, no_pubkey, \
			no_serial, no_sigdump, no_signame, no_validity, no_version");
		echo "Common Name:";
		echo ""; # newline
		echo "${certText}" | grep "Subject:" | sed -e "s/^.*CN=//" | sed -e "s/\/emailAddress=.*//";
		echo ""; # newline
		echo "Subject Alternative Name(s):";
		echo ""; # newline
		echo "${certText}" | grep -A 1 "Subject Alternative Name:" \
			| sed -e "2s/DNS://g" -e "s/ //g" | tr "," "\n" | tail -n +2;
		return 0;
	else
		echo "ERROR: Certificate not found.";
		return 1;
	fi;
}

# `s` with no arguments opens the current directory in Sublime Text, otherwise
# opens the given location
function s() {
	if [ $# -eq 0 ]; then
		subl .;
	else
		subl "$@";
	fi;
}

# `a` with no arguments opens the current directory in Atom Editor, otherwise
# opens the given location
function a() {
	if [ $# -eq 0 ]; then
		atom .;
	else
		atom "$@";
	fi;
}

# `v` with no arguments opens the current directory in Vim, otherwise opens the
# given location
function v() {
	if [ $# -eq 0 ]; then
		vim .;
	else
		vim "$@";
	fi;
}

# `o` with no arguments opens the current directory, otherwise opens the given
# location
function o() {
	if [ $# -eq 0 ]; then
		open .;
	else
		open "$@";
	fi;
}

# `tre` is a shorthand for `tree` with hidden files and color enabled, ignoring
# the `.git` directory, listing directories first. The output gets piped into
# `less` with options to preserve color and line numbers, unless the output is
# small enough for one screen.
function tre() {
	tree -aC -I '.git|node_modules|bower_components' --dirsfirst "$@" | less -FRNX;
}

# A better git clone
# clones a repository, cds into it, and opens it in my editor.
#
# Based on https://github.com/stephenplusplus/dots/blob/master/.bash_profile#L68 by @stephenplusplus
#
# Note: subl is already setup as a shortcut to Sublime. Replace with your own editor if different
#
# - arg 1 - url|username|repo remote endpoint, username on github, or name of
#           repository.
# - arg 2 - (optional) name of repo
#
# usage:
#   $ clone things
#     .. git clone git@github.com:addyosmani/things.git things
#     .. cd things
#     .. subl .
#
#   $ clone yeoman generator
#     .. git clone git@github.com:yeoman/generator.git generator
#     .. cd generator
#     .. subl .
#
#   $ clone git@github.com:addyosmani/dotfiles.git
#     .. git clone git@github.com:addyosmani/dotfiles.git dotfiles
#     .. cd dots
#     .. subl .
function clone {
  # customize username to your own
  local username="jwv"

  local url=$1;
  local repo=$2;

  if [[ ${url:0:4} == 'http' || ${url:0:3} == 'git' ]]
  then
    # just clone this thing.
    repo=$(echo $url | awk -F/ '{print $NF}' | sed -e 's/.git$//');
  elif [[ -z $repo ]]
  then
    # my own stuff.
    repo=$url;
    url="git@github.com:$username/$repo";
  else
    # not my own, but I know whose it is.
    url="git@github.com:$url/$repo.git";
  fi
  echo "Repo: " $url $repo
  echo
  git clone $url $repo && cd $repo && subl .;
}

# Get headers from web page
function headers {
	curl -I -L $1
}

# find shorthand
function f {
	find . -name "$1"
}

# Find file whose name starts with a given string
function fs {
	find . -name "$1"'*'
}

# Find file whose name ends with a given string
function fe {
	find . -name '*'"$1"
}

# display useful host related informaton
function i {
	echo -e "\nYou are logged on ${RED}$HOST"
	echo -e "\nAdditionnal information:$NC " ; uname -a
	echo -e "\n${RED}Users logged on:$NC " ; w -h
	echo -e "\n${RED}Current date :$NC " ; date
	echo -e "\n${RED}Machine stats :$NC " ; uptime
	echo -e "\n${RED}Current network location :$NC " ; scselect
	echo -e "\n${RED}Public facing IP Address :$NC " ;ip
	#echo -e "\n${RED}DNS Configuration:$NC " ; scutil --dns
	echo
}

# User Proccess
function myps {
 ps -u $USER -o pid,%cpu,%mem,start,time,bsdtime,command ;
}


# Get HTML5 Template
function h5d {
	local path=$1;
	local repo="h5";
	local url="git@github.com:jwv/$repo";

	if [[ -z $path ]]
	then
		path=$repo;
	fi

  url="git@github.com:jwv/$repo";

  echo "Repo: " $url "Path:" $path
  git clone $url $path && cd $path && npm install && tput bel && subl . && gulp;
}