iankelling.org Git - small-misc-bash/blob - gitget

   1 #!/bin/bash
   2 # I, Ian Kelling, follow the GNU license recommendations at
   3 # https://www.gnu.org/licenses/license-recommendations.en.html. They
   4 # recommend that small programs, < 300 lines, be licensed under the
   5 # Apache License 2.0. This file contains or is part of one or more small
   6 # programs. If a small program grows beyond 300 lines, I plan to switch
   7 # its license to GPL.
   8
   9 # Copyright 2024 Ian Kelling
  10
  11 # Licensed under the Apache License, Version 2.0 (the "License");
  12 # you may not use this file except in compliance with the License.
  13 # You may obtain a copy of the License at
  14
  15 #     http://www.apache.org/licenses/LICENSE-2.0
  16
  17 # Unless required by applicable law or agreed to in writing, software
  18 # distributed under the License is distributed on an "AS IS" BASIS,
  19 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20 # See the License for the specific language governing permissions and
  21 # limitations under the License.
  22
  23
  24 gitget() {
  25     local help="Usage: gitget [--help] [REPO_URL] [REPO_DIR]
  26 Idempotent git clone/pull
  27
  28 If repo exists, pull.
  29 Without arguments, just git pull.
  30 REPO_DIR is, or will become the root of the repo."
  31
  32     if [[ $1 == --help ]]; then
  33         echo "$help"
  34         return
  35     fi
  36     if (( $# >= 3 )); then
  37         echo error: expected 2 or less arguments, got $#
  38         echo "$help"
  39         return 1
  40     fi
  41     if [[ $# == 0 ]]; then
  42         git pull
  43         return $?
  44     fi
  45
  46     local workingdir
  47     local orig_dir="$PWD"
  48     local ret
  49     if [[ $2 ]]; then
  50         workingdir="$2"
  51     else
  52         workingdir="${1##*/}"
  53         workingdir="${workingdir%.git}"
  54     fi
  55     [[ -d $workingdir ]] || mkdir -p "$workingdir"
  56     cd "$workingdir"
  57     if [[ -d .git ]]; then
  58         git pull
  59         ret=$?
  60     else
  61         git clone "$1" .
  62         ret=$?
  63     fi
  64     cd "$orig_dir"
  65     return $ret
  66 }
  67 gitget "$@"