vcsh

   1 #!/bin/sh
   2
   3 #set -x
   4
   5 SELF=$(basename $0)
   6 [ -z $XDG_CONFIG_HOME ] && XDG_CONFIG_HOME="$HOME/.config"
   7 VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
   8
   9 help() {
  10         echo "usage: $SELF <args>
  11
  12    help           Display this help
  13
  14    list           List all repos
  15
  16    use <repo>     Use this repository
  17    run <repo>
  18        <command>  Use this repository
  19
  20    init           Initialize a new repository
  21    clone <remote>
  22          [<repo>] Clone from an existing repository
  23
  24    exit           Exit vcsh mode" >&2
  25 }
  26
  27 use() {
  28         REPO_NAME="$1"
  29         GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
  30
  31         if [ ! -d "$GIT_DIR" ]; then
  32                 echo E: no repository found for "$REPO_NAME" >&2
  33                 return 2
  34         fi
  35
  36         export GIT_DIR
  37         export GIT_WORK_TREE="$(git config --get core.worktree)"
  38         export VCSH_DIRECTORY="$REPO_NAME"
  39 }
  40
  41 init() {
  42         [[ -e $GIT_DIR ]] &&
  43                 echo "$(basename $0): fatal: $GIT_DIR exists" &&
  44                 return 21
  45         export GIT_WORK_TREE="$HOME"
  46         mkdir -p $GIT_WORK_TREE
  47         cd $GIT_WORK_TREE ||
  48                 (echo "$(basename $0): fatal: could not enter $GIT_WORK_TREE" &&
  49                  exit 20) || exit 20
  50         cd $GIT_WORK_TREE
  51         git init
  52         git config core.worktree $GIT_WORK_TREE
  53 }
  54
  55 leave() {
  56         unset GIT_DIR
  57         unset GIT_WORK_TREE
  58         unset VCSH_DIRECTORY
  59 }
  60
  61 if [ "$1" = 'help' ] || [ $# -eq 0 ]; then
  62         help
  63         [ "$1" = 'help' ]
  64         return $?
  65
  66 elif [ "$1" = 'list' ]; then
  67         for i in $VCSH_BASE/*.git; do
  68                 echo $(basename $i .git)
  69         done
  70         return 0
  71
  72 elif [ "$1" = 'run' ]; then
  73         use $2
  74         shift 2
  75         "$@"
  76         leave
  77         return 0
  78
  79 elif [ "$1" = 'use' ]; then
  80         if [[ -o NO_IGNORE_EOF ]]; then
  81                 export VCSH_NO_IGNORE_EOF=1
  82                 setopt IGNORE_EOF
  83                 vcsh_exit() {vcsh exit; zle reset-prompt}
  84                 zle -N vcsh_exit
  85                 bindkey '^d' 'vcsh_exit'
  86         fi
  87         use $2
  88         buildPS1
  89         return 0
  90
  91 elif [ "$1" = 'clone' ]; then
  92         export GIT_REMOTE="$2"
  93         REPO_NAME="$3"
  94         [[ -z $REPO_NAME ]] && REPO_NAME=$(basename $GIT_REMOTE .git)
  95         export REPO_NAME
  96         export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
  97         init
  98
  99         git remote add origin $GIT_REMOTE
 100         git config branch.master.remote origin
 101         git config branch.master.merge  refs/heads/master
 102         git fetch
 103         for i in $(git ls-tree -r origin/master | awk '{print $4}'); do
 104         [[ -e $i ]] &&
 105                 echo "$(basename $0): error: $i exists." &&
 106                 CONFLICT=1;
 107         done
 108         [[ -n $CONFLICT ]] &&
 109                 echo "$(basename $0): fatal: will stop after fetching and not try to merge!\n" &&
 110                 exit 3
 111         git merge origin/master
 112         vcsh use $REPO_NAME
 113
 114 elif [ "$1" = 'init' ]; then
 115         export REPO_NAME="$2"
 116         export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 117         init
 118         vcsh use $REPO_NAME
 119
 120 elif [ "$1" = 'exit' ]; then
 121         if [[ $VCSH_NO_IGNORE_EOF -gt 0 ]]; then
 122                 unset VCSH_NO_IGNORE_EOF
 123                 setopt NO_IGNORE_EOF
 124         fi
 125         leave
 126         buildPS1
 127         return 0
 128
 129 else
 130         help
 131         return 3
 132
 133 fi
 134