#!/bin/sh

# cd into matching gem directory ("cd -" friendly)
cdgem() {
  local gempath=$(gem env gemdir)/gems
  if [[ $1 == "" ]]; then
    cd $gempath
    return
  fi
  
  local gem=$(ls $gempath | g $1 | sort | tail -1)
  if [[ $gem != "" ]]; then
    cd $gempath/$gem
  fi
}

_cdgem() {
  COMPREPLY=($(compgen -W '$(ls `gem env gemdir`/gems)' -- ${COMP_WORDS[COMP_CWORD]}))
  return 0;
}
complete -o default -o nospace -F _cdgem cdgem;

# check for a rake task on the current dir
function rake_exists? {
  [[ -f Rakefile && $(rake -T | g $1 | wc -l) -gt 0 ]]; return $?
}

# get current revision of a repo
svn_revision() { 
  svn info $@ | awk '/^Revision:/ {print $2}'
}

# print the log or 'no changes' after an update
svn_up_and_log() {
  local old_rev=$(svn_revision $@)
  local first_up=$((${old_rev} + 1))
  svn up -q $@
  if [ $(svn_revision $@) -gt ${old_rev} ]; then
    svn log -v -rHEAD:${first_up} $@
  else
    echo "No changes."
  fi
}

# tag a directory in a command to come to it later
tag() {
  alias $1='cd $PWD'
}

# alias last command
a() { 
  x=`history 1 | sed 's/.\{7\}//'`; 
  alias ${1}="${x}"; 
}

# True if a domain name is available
domainavailable() {
  if whois $1 | grep "No match for" &> /dev/null; then
    echo "$1 is available"
    return 0
  else
    echo "$1 is not available"
    return 1
  fi
}

# Check all domains passed as arguments and print those available
availabledomains() {
  for f in $@; do
    domainavailable $f &> /dev/null && echo $f;
  done
}

# CD back to current git's project base dir
cdg() {
  local cdup=$(git-rev-parse --show-cdup 2> /dev/null)
  if [ $? == 0 ]; then
    if [ -z "$cdup" ]; then
      cdup=.
    fi
    cd $cdup/$1
  else
    echo "Not in a git repository"
    return $?
  fi
}

# Use ruby as a calculator"
calc() {
  ruby -e 'include Math; puts eval(ARGV.join(" "))' $@;
}

# send HUP to the passed named process
hup() {
  kill -HUP `pidof $1`;
}