.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 "$@" && cd "$@"
}


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

# 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)')"
}

# Start an HTTP server from a directory, optionally specifying the port
function server() {
	local port="${1:-8000}"
	open "http://localhost:${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"
}

# 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}"
}


# 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="addyosmani"

  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

  git clone $url $repo && cd $repo && subl .;
}

# simple git log
# usage glr v0.2.2 v0.2.3
function glr() {
    git log $1 $2 --pretty=format:'* %h %s' --date=short --no-merges 
}

# git log with per-commit cmd-clickable GitHub URLs (iTerm)
function gf() {
  local remote="$(git remote -v | awk '/^origin.*\(push\)$/ {print $2}')"
  [[ "$remote" ]] || return
  local user_repo="$(echo "$remote" | perl -pe 's/.*://;s/\.git$//')"
  git log $* --name-status --color | awk "$(cat <<AWK
    /^.*commit [0-9a-f]{40}/ {sha=substr(\$2,1,7)}
    /^[MA]\t/ {printf "%s\thttps://github.com/$user_repo/blob/%s/%s\n", \$1, sha, \$2; next}
    /.*/ {print \$0}
AWK
  )" | less -F
}


# Copy w/ progress
cp_p () {
  rsync -WavP --human-readable --progress $1 $2
}


# Test if HTTP compression (RFC 2616 + SDCH) is enabled for a given URL.
# Send a fake UA string for sites that sniff it instead of using the Accept-Encoding header. (Looking at you, ajax.googleapis.com!)
function httpcompression() {
	encoding="$(curl -LIs -H 'User-Agent: Mozilla/5 Gecko' -H 'Accept-Encoding: gzip,deflate,compress,sdch' "$1" | grep '^Content-Encoding:')" && echo "$1 is encoded using ${encoding#* }" || echo "$1 is not using any encoding"
}

# Syntax-highlight JSON strings or files
function json() {
	if [ -p /dev/stdin ]; then
		# piping, e.g. `echo '{"foo":42}' | json`
		python -mjson.tool | pygmentize -l javascript
	else
		# e.g. `json '{"foo":42}'`
		python -mjson.tool <<< "$*" | pygmentize -l javascript
	fi
}

# prune a set of empty directories
function prunedir () { 
   find $* -type d -empty -print0 | xargs -0r rmdir -p ; 
}

# take this repo and copy it to somewhere else minus the .git stuff.
function gitexport(){
	mkdir -p "$1"
	git archive master | tar -x -C "$1"
}

# get gzipped size
function gz() {
	echo "orig size    (bytes): "
	cat "$1" | wc -c
	echo "gzipped size (bytes): "
	gzip -c "$1" | wc -c
}

# All the dig info
function digga() {
	dig +nocmd "$1" any +multiline +noall +answer
}

# Escape UTF-8 characters into their 3-byte format
function escape() {
	printf "\\\x%s" $(printf "$@" | xxd -p -c1 -u)
	echo # newline
}

# Decode \x{ABCD}-style Unicode escape sequences
function unidecode() {
	perl -e "binmode(STDOUT, ':utf8'); print \"$@\""
	echo # newline
}

# Add note to Notes.app (OS X 10.8)
# Usage: `note 'title' 'body'` or `echo 'body' | note`
# Title is optional
function note() {
        local title
        local body
        if [ -t 0 ]; then
                title="$1"
                body="$2"
        else
                title=$(cat)
        fi
        osascript >/dev/null <<EOF
tell application "Notes"
        tell account "iCloud"
                tell folder "Notes"
                        make new note with properties {name:"$title", body:"$title" & "<br><br>" & "$body"}
                end tell
        end tell
end tell
EOF
}

# Add reminder to Reminders.app (OS X 10.8)
# Usage: `remind 'foo'` or `echo 'foo' | remind`
function remind() {
        local text
        if [ -t 0 ]; then
                text="$1" # argument
        else
                text=$(cat) # pipe
        fi
        osascript >/dev/null <<EOF
tell application "Reminders"
        tell the default list
                make new reminder with properties {name:"$text"}
        end tell
end tell
EOF
}

# Install Grunt plugins and add them as `devDependencies` to `package.json`
# Usage: `gi contrib-watch contrib-uglify zopfli`
function gi() {
        npm install --save-dev ${*/#/grunt-}
}

# Install Gulp plugins and add them as `devDependencies` to `package.json`
# Usage: `gp uglify clean cache csso`
function gp() {
        npm install --save-dev ${*/#/gulp-}
}

# Install Yeoman generators
# Usage: `yi webapp gruntfile angular`
function yi() {
        npm install --save-dev ${*/#/generator-}
}


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

# `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 current directory, otherwise opens the given
# location
function o() {
        if [ $# -eq 0 ]; then
                open .
        else
                open "$@"
        fi
}


# Launch installed browsers for a specific URL
# Usage: browsers "http://www.google.com"
function browsers(){
	chrome $1
	opera $1
	firefox $1
	safari $1	
}

# Create animated GIFs from any video
# Uses http://gist.github.com/SlexAxton/4989674
gifify() {
  if [[ -n "$1" ]]; then
    if [[ $2 == '--good' ]]; then
      ffmpeg -i $1 -r 10 -vcodec png out-static-%05d.png
      time convert -verbose +dither -layers Optimize -resize 600x600\> out-static*.png  GIF:- | gifsicle --colors 128 --delay=5 --loop --optimize=3 --multifile - > $1.gif
      rm out-static*.png
    else
      ffmpeg -i $1 -s 600x400 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=3 > $1.gif
    fi
  else
    echo "proper usage: gifify <input_movie.mov>. You DO need to include an extension."
  fi
}

# Browserstack shortcuts, now with added hotness thanks to the Browserstack team.
# Note, a trial or paid for account is needed for this to work
# Usage: ipad3 "http://www.google.com", win7ie8 "http://www.google.com" etc.

# For local server running on port 3000, use like this
# Usage: ipad3 "http://localhost:3000" "localhost,3000,0", win7ie8 "http://localhost:3000" "localhost,3000,0" etc.

# For local server running on apache with ssl as staging.example.com and https://staging.example.com 
# Usage: ipad3 "http://staging.example.com" "staging.example.com,80,0,staging.example.com,443,1", win7ie8 "http://staging.example.com" "staging.example.com,80,0,staging.example.com,443,1" etc.

function openurl(){
	if [ $2 ]
	then
	  url=$1"&host_ports=$2"
	fi
	open -a google\ chrome ${url}
}

function androidnexus(){
	local url="http://www.browserstack.com/start#os=android&os_version=4.0.3&device=Samsung+Galaxy+Nexus&zoom_to_fit=true&url=$1&start=true"
	openurl $url $2
}

function ipad3(){
	local url="http://www.browserstack.com/start#os=ios&os_version=5.1&device=iPad+3rd&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function ipad3ios6(){
	local url="http://www.browserstack.com/start#os=ios&os_version=6.1&device=iPad+3rd&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function ipad2(){
	local url="http://www.browserstack.com/start#os=ios&os_version=5.1&device=iPad+2nd&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function win7ie8(){
	local url="http://www.browserstack.com/start#os=Windows&os_version=7&browser=IE&browser_version=8.0&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function win7ie9(){
	local url="http://www.browserstack.com/start#os=Windows&os_version=7&browser=IE&browser_version=9.0&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function win8ie10(){
	local url="http://www.browserstack.com/start#os=Windows&os_version=8&browser=IE&browser_version=10.0&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function winxpie8(){
	local url="http://www.browserstack.com/start#os=Windows&os_version=XP&browser=IE&browser_version=8.0&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function winxpie7(){
	local url="http://www.browserstack.com/start#os=Windows&os_version=XP&browser=IE&browser_version=7.0&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function winxpie6(){
	local url="http://www.browserstack.com/start#os=Windows&os_version=XP&browser=IE&browser_version=6.0&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function win7chrome(){
	local url="http://www.browserstack.com/start#os=Windows&os_version=7&browser=Chrome&browser_version=21.0&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

function win7ff(){
	local url="http://www.browserstack.com/start#os=Windows&os_version=7&browser=Firefox&browser_version=16.0&zoom_to_fit=true&resolution=1024x768&speed=1&url=$1&start=true"
	openurl $url $2
}

# GitHub URL for current repo.
function gurl() {
  local remotename="${@:-origin}"
  local remote="$(git remote -v | awk '/^'"$remotename"'.*\(push\)$/ {print $2}')"
  [[ "$remote" ]] || return
  local user_repo="$(echo "$remote" | perl -pe 's/.*://;s/\.git$//')"
  echo "https://github.com/$user_repo"
}

# open all changed files (that still actually exist) in the editor
# credit: @cowboy
function ged() {
  local files=()
  for f in $(git diff --name-only "$@"); do
    [[ -e "$f" ]] && files=("${files[@]}" "$f")
  done
  local n=${#files[@]}
  echo "Opening $n $([[ "$@" ]] || echo "modified ")file$([[ $n != 1 ]] && \
    echo s)${@:+ modified in }$@"
  q "${files[@]}"
}

# open last commit in GitHub, in the browser.
# credit: @cowboy
function gfu() {
  local n="${@:-1}"
  n=$((n-1))
  open $(git log -n 1 --skip=$n --pretty=oneline | awk "{printf \"$(gurl)/commit/%s\", substr(\$1,1,7)}")
}