vcsh

   1 #!/bin/sh
   2
   3 [ -n "$VCSH_DEBUG" ] && set -x
   4
   5 SELF=$(basename $0)
   6
   7 [ -z "$XDG_CONFIG_HOME" ] && XDG_CONFIG_HOME="$HOME/.config"
   8 for check_directory in "$XDG_CONFIG_HOME" "$XDG_CONFIG_HOME/vcsh" "$XDG_CONFIG_HOME/vcsh/repo.d"
   9 do
  10         if [ ! -d "$check_directory" ]; then
  11                 if [ -e "$check_directory" ]; then
  12                         echo "$SELF: error: $check_directory exists but is not a directory" >&2
  13                         exit 2
  14                 else
  15                         mkdir "$check_directory" || (echo "$SELF: error: could not create $check_directory" >&2; exit 2)
  16                 fi
  17         fi
  18 done
  19
  20 VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
  21
  22 debug() {
  23         [ -n "$VCSH_DEBUG" ] && echo "$SELF: debug: $1"
  24 }
  25
  26 verbose() {
  27         if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $1"; fi
  28 }
  29
  30 #   use <repo>     Use this repository
  31 #
  32 #   exit              Exit vcsh mode" >&2
  33 help() {
  34         echo "usage: $SELF <args>
  35
  36    help              Display this help
  37
  38    list              List all repos
  39
  40    run <repo> \\
  41        <command>     Use this repository
  42
  43    init <repo>       Initialize a new repository
  44    clone <remote> \\
  45          [<repo>]    Clone from an existing repository" >&2
  46 }
  47
  48 use() {
  49         verbose "use() begin"
  50         REPO_NAME="$1"
  51         GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
  52
  53         if [ ! -d "$GIT_DIR" ]; then
  54                 echo E: no repository found for "$REPO_NAME" >&2
  55                 return 2
  56         fi
  57
  58         export GIT_DIR
  59         export GIT_WORK_TREE="$(git config --get core.worktree)"
  60         export VCSH_DIRECTORY="$REPO_NAME"
  61         verbose "use() end"
  62 }
  63
  64 init() {
  65         verbose "init() begin"
  66         [ -e "$GIT_DIR" ] &&
  67                 echo "$SELF: fatal: $GIT_DIR exists" &&
  68                 return 21
  69         export GIT_WORK_TREE="$HOME"
  70         mkdir -p "$GIT_WORK_TREE"
  71         cd "$GIT_WORK_TREE" ||
  72                 (echo "$SELF: fatal: could not enter $GIT_WORK_TREE" &&
  73                  exit 20) || exit 20
  74         cd "$GIT_WORK_TREE"
  75         git init
  76         git config core.worktree "$GIT_WORK_TREE"
  77         verbose "init() end"
  78 }
  79
  80 leave() {
  81         unset GIT_DIR
  82         unset GIT_WORK_TREE
  83         unset VCSH_DIRECTORY
  84 }
  85
  86 if [ "$1" = 'help' ] || [ "$#" -eq 0 ]; then
  87         help
  88         [ "$1" = 'help' ]
  89         exit $?
  90
  91 elif [ "$1" = 'list' ]; then
  92         verbose "list begin"
  93         for i in "$VCSH_BASE"/*.git; do
  94                 echo $(basename "$i" .git)
  95         done
  96         verbose "list end"
  97         exit 0
  98
  99 elif [ "$1" = 'run' ]; then
 100         verbose "run begin"
 101         use "$2"
 102         shift 2
 103         "$@"
 104         leave
 105         verbose "run end"
 106         exit 0
 107
 108 #elif [ "$1" = 'use' ]; then
 109 #       verbose "use begin"
 110 #       if [ -n "$ZSH_VERSION" ]; then
 111 #               if [ -o NO_IGNORE_EOF ]; then
 112 #                       export VCSH_NO_IGNORE_EOF=1
 113 #                       setopt IGNORE_EOF
 114 #               fi
 115 #               vcsh_exit() {
 116 #                       vcsh exit;
 117 #                       zle reset-prompt;
 118 #               }
 119 #               zle -N vcsh_exit
 120 #               bindkey '^d' 'vcsh_exit'
 121 #       fi
 122 #       use $2
 123 #       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
 124 #       verbose "use end"
 125 #       exit 0
 126
 127 elif [ "$1" = 'clone' ]; then
 128         verbose "clone begin"
 129         GIT_REMOTE="$2"
 130         REPO_NAME="$3"
 131         [ -z "$REPO_NAME" ] && REPO_NAME=$(basename "$GIT_REMOTE" .git)
 132         export REPO_NAME
 133         export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 134         init
 135
 136         git remote add origin "$GIT_REMOTE"
 137         git config branch.master.remote origin
 138         git config branch.master.merge  refs/heads/master
 139         git fetch
 140         for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
 141                 [ -e "$object" ] &&
 142                         echo "$SELF: error: $object exists." &&
 143                         VCSH_CONFLICT=1;
 144         done
 145         [ "$VCSH_CONFLICT" = '1' ] &&
 146                 echo "$SELF: fatal: will stop after fetching and not try to merge!\n" &&
 147                 exit 3
 148         git merge origin/master
 149 #       vcsh use $REPO_NAME
 150         verbose "clone end"
 151
 152 elif [ "$1" = 'init' ]; then
 153         verbose "init begin"
 154         [ -z $2 ] && help && return 0
 155         export REPO_NAME="$2"
 156         export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 157         init
 158 #       vcsh use "$REPO_NAME"
 159         verbose "init end"
 160
 161 #elif [ "$1" = 'exit' ]; then
 162 #       verbose "exit begin"
 163 #       if [ -n "$ZSH_VERSION" ] && [ "$VCSH_NO_IGNORE_EOF" = '1' ]; then
 164 #               unset VCSH_NO_IGNORE_EOF
 165 #               setopt NO_IGNORE_EOF
 166 #       fi
 167 #       leave
 168 #       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
 169 #       verbose "exit end"
 170 #       exit 0
 171
 172 else
 173         verbose "defaulting to calling help()"
 174         help
 175         exit 3
 176
 177 fi
 178