vcsh

   1 #!/bin/sh
   2
   3 #set -x
   4
   5 SELF=$(basename $0)
   6 [ -z $XDG_CONFIG_HOME ] && XDG_CONFIG_HOME="$HOME/.config"
   7 for dir in $XDG_CONFIG_HOME $XDG_CONFIG_HOME/vcsh $XDG_CONFIG_HOME/vcsh/repo.d
   8 do
   9
  10     if [ ! -d $dir ]; then
  11         if [ -e $dir ]; then
  12             echo "$SELF: error: $dir exists but is not a directory" >&2
  13             return 2
  14         else
  15             mkdir $dir || (echo "$SELF: error: could not create $dir" >&2; return 2)
  16         fi
  17     fi
  18 done
  19 VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
  20
  21 help() {
  22         echo "usage: $SELF <args>
  23
  24    help           Display this help
  25
  26    list           List all repos
  27
  28    use <repo>     Use this repository
  29    run <repo>
  30        <command>  Use this repository
  31
  32    init           Initialize a new repository
  33    clone <remote>
  34          [<repo>] Clone from an existing repository
  35
  36    exit           Exit vcsh mode" >&2
  37 }
  38
  39 use() {
  40         REPO_NAME="$1"
  41         GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
  42
  43         if [ ! -d "$GIT_DIR" ]; then
  44                 echo E: no repository found for "$REPO_NAME" >&2
  45                 return 2
  46         fi
  47
  48         export GIT_DIR
  49         export GIT_WORK_TREE="$(git config --get core.worktree)"
  50         export VCSH_DIRECTORY="$REPO_NAME"
  51 }
  52
  53 init() {
  54         [[ -e $GIT_DIR ]] &&
  55                 echo "$SELF: fatal: $GIT_DIR exists" &&
  56                 return 21
  57         export GIT_WORK_TREE="$HOME"
  58         mkdir -p $GIT_WORK_TREE
  59         cd $GIT_WORK_TREE ||
  60                 (echo "$SELF: fatal: could not enter $GIT_WORK_TREE" &&
  61                  exit 20) || exit 20
  62         cd $GIT_WORK_TREE
  63         git init
  64         git config core.worktree $GIT_WORK_TREE
  65 }
  66
  67 leave() {
  68         unset GIT_DIR
  69         unset GIT_WORK_TREE
  70         unset VCSH_DIRECTORY
  71 }
  72
  73 if [ "$1" = 'help' ] || [ $# -eq 0 ]; then
  74         help
  75         [ "$1" = 'help' ]
  76         return $?
  77
  78 elif [ "$1" = 'list' ]; then
  79         for i in $VCSH_BASE/*.git; do
  80                 echo $(basename $i .git)
  81         done
  82         return 0
  83
  84 elif [ "$1" = 'run' ]; then
  85         use $2
  86         shift 2
  87         "$@"
  88         leave
  89         return 0
  90
  91 elif [ "$1" = 'use' ]; then
  92         if [[ -o NO_IGNORE_EOF ]]; then
  93                 export VCSH_NO_IGNORE_EOF=1
  94                 setopt IGNORE_EOF
  95                 vcsh_exit() {vcsh exit; zle reset-prompt;}
  96                 zle -N vcsh_exit
  97                 bindkey '^d' 'vcsh_exit'
  98         fi
  99         use $2
 100         buildPS1
 101         return 0
 102
 103 elif [ "$1" = 'clone' ]; then
 104         GIT_REMOTE="$2"
 105         REPO_NAME="$3"
 106         [[ -z $REPO_NAME ]] && REPO_NAME=$(basename $GIT_REMOTE .git)
 107         export REPO_NAME
 108         export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 109         init
 110
 111         git remote add origin $GIT_REMOTE
 112         git config branch.master.remote origin
 113         git config branch.master.merge  refs/heads/master
 114         git fetch
 115         for i in $(git ls-tree -r origin/master | awk '{print $4}'); do
 116         [[ -e $i ]] &&
 117                 echo "$SELF: error: $i exists." &&
 118                 CONFLICT=1;
 119         done
 120         [[ -n $CONFLICT ]] &&
 121                 echo "$SELF: fatal: will stop after fetching and not try to merge!\n" &&
 122                 exit 3
 123         git merge origin/master
 124         vcsh use $REPO_NAME
 125
 126 elif [ "$1" = 'init' ]; then
 127         export REPO_NAME="$2"
 128         export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 129         init
 130         vcsh use $REPO_NAME
 131
 132 elif [ "$1" = 'exit' ]; then
 133         if [[ $VCSH_NO_IGNORE_EOF -gt 0 ]]; then
 134                 unset VCSH_NO_IGNORE_EOF
 135                 setopt NO_IGNORE_EOF
 136         fi
 137         leave
 138         buildPS1
 139         return 0
 140
 141 else
 142         help
 143         return 3
 144
 145 fi
 146