.functions

# define md
md () { mkdir -p "$@" && cd "$@"; }

# add a github remote by github username
function gra() {
  if (( "${#@}" != 1 )); then
    echo "Usage: gra githubuser"
    return 1;
  fi
  local repo=$(gr show -n origin | perl -ne '/Fetch URL: .*github\.com[:\/].*\/(.*)/ && print $1')
  gr add "$1" "git://github.com/$1/$repo"
}

# 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
}

# Just the last few commits, please!
for n in {1..5}; do alias gf$n="gf -n $n"; done

# OSX-specific Git shortcuts
if [[ "$OSTYPE" =~ ^darwin ]]; then
  alias gdk='git ksdiff'
  alias gdkc='gdk --cached'
  alias gt='gittower -s'
fi

# Change the extension of files from $1 to $2 
function cext() {
  if (( "${#@}" != 2 )); then
    echo "Changes the extension from <X> to <Y>."
    echo "    Usage: cext X Y"
    return 1;
  fi
  find -L . -type f -name "*.$1" -print0 | while IFS= read -r -d '' FNAME; do
    mv -v -- "$FNAME" "${FNAME%.$1}.$2"
  done
}