unixorn/fzf-zsh-plugin

#!/usr/bin/env zsh
#
# Original Author: Mark Nielsen
# Original source: https://polothy.github.io/post/2019-08-19-fzf-git-checkout/

set -o pipefail
if [[ -n "$DEBUG" ]]; then
  set -x
fi

fail() {
  printf '%s\n' "$1" >&2  ## Send message to stderr. Exclude >&2 if you don't want it that way.
  exit "${2-1}"  ## Return a code specified by $2 or 1 by default.
}

has() {
  which "$@" > /dev/null 2>&1
}

in_git_repo() {
  git rev-parse HEAD > /dev/null 2>&1
}

if ! in_git_repo; then
  fail "Not in a git repository"
fi

if ! has fzf; then
  fail "Can't find fzf in your PATH"
fi

if ! has git; then
  fail "Can't find git in your PATH"
fi

fzf-git-checkout() {
    in_git_repo || return

    local branch

    branch=$(fzf-git-branch)
    if [[ "$branch" = "" ]]; then
        echo "No branch selected."
        return
    fi

    # If branch name starts with 'remotes/' then it is a remote branch. By
    # using --track and a remote branch name, it is the same as:
    # git checkout -b branchName --track origin/branchName
    if [[ "$branch" = 'remotes/'* ]]; then
        git checkout --track $branch
    else
        git checkout $branch;
    fi
}

# shellcheck disable=SC2068
fzf-git-checkout $@