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="$HOME/.config"
   8 [ -z "$VCSH_BASE" ]       && VCSH_BASE="$XDG_CONFIG_HOME/vcsh/repo.d"
   9 for check_directory in "$VCSH_BASE" "$HOME/.gitignore.d"
  10 do
  11         if [ ! -d "$check_directory" ]; then
  12                 if [ -e "$check_directory" ]; then
  13                         echo "$SELF: error: $check_directory exists but is not a directory" >&2
  14                         exit 2
  15                 else
  16                         echo "$SELF: info: attempting to create $check_directory"
  17                         mkdir -p "$check_directory" || (echo "$SELF: error: could not create $check_directory" >&2; exit 2)
  18                 fi
  19         fi
  20 done
  21
  22 debug() {
  23         [ -n "$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
  46    seed-gitignore \\
  47    <repo>            Seed .gitignore.d/<repo> from git ls-files" >&2
  48 }
  49
  50 use() {
  51         verbose "use() begin"
  52         REPO_NAME="$1"
  53         GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
  54
  55         if [ ! -d "$GIT_DIR" ]; then
  56                 echo E: no repository found for "$REPO_NAME" >&2
  57                 return 2
  58         fi
  59
  60         export GIT_DIR
  61         export GIT_WORK_TREE="$(git config --get core.worktree)"
  62         export VCSH_DIRECTORY="$REPO_NAME"
  63         verbose "use() end"
  64 }
  65
  66 init() {
  67         verbose "init() begin"
  68         [ -e "$GIT_DIR" ] &&
  69                 echo "$SELF: fatal: $GIT_DIR exists" &&
  70                 return 21
  71         export GIT_WORK_TREE="$HOME"
  72         mkdir -p "$GIT_WORK_TREE"
  73         cd "$GIT_WORK_TREE" ||
  74                 (echo "$SELF: fatal: could not enter $GIT_WORK_TREE" &&
  75                  exit 20) || exit 20
  76         cd "$GIT_WORK_TREE"
  77         git init
  78         git config core.worktree     "$GIT_WORK_TREE"
  79         git config core.excludesfile ".gitignore.d/$REPO_NAME"
  80         verbose "init() end"
  81 }
  82
  83 leave() {
  84         unset GIT_DIR
  85         unset GIT_WORK_TREE
  86         unset VCSH_DIRECTORY
  87 }
  88
  89 if [ "$1" = 'help' ] || [ "$#" -eq 0 ]; then
  90         help
  91         [ "$1" = 'help' ]
  92         exit $?
  93
  94 elif [ "$1" = 'list' ]; then
  95         verbose "list begin"
  96         for i in "$VCSH_BASE"/*.git; do
  97                 echo $(basename "$i" .git)
  98         done
  99         verbose "list end"
 100         exit 0
 101
 102 elif [ "$1" = 'run' ]; then
 103         verbose "run begin"
 104         use "$2"
 105         shift 2
 106         "$@"
 107         leave
 108         verbose "run end"
 109         exit 0
 110
 111 #elif [ "$1" = 'use' ]; then
 112 #       verbose "use begin"
 113 #       if [ -n "$ZSH_VERSION" ]; then
 114 #               if [ -o NO_IGNORE_EOF ]; then
 115 #                       export VCSH_NO_IGNORE_EOF=1
 116 #                       setopt IGNORE_EOF
 117 #               fi
 118 #               vcsh_exit() {
 119 #                       vcsh exit;
 120 #                       zle reset-prompt;
 121 #               }
 122 #               zle -N vcsh_exit
 123 #               bindkey '^d' 'vcsh_exit'
 124 #       fi
 125 #       use $2
 126 #       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
 127 #       verbose "use end"
 128 #       exit 0
 129
 130 elif [ "$1" = 'clone' ]; then
 131         verbose "clone begin"
 132         GIT_REMOTE="$2"
 133         REPO_NAME="$3"
 134         [ -z "$REPO_NAME" ] && REPO_NAME=$(basename "$GIT_REMOTE" .git)
 135         export REPO_NAME
 136         export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 137         init
 138
 139         git remote add origin "$GIT_REMOTE"
 140         git config branch.master.remote origin
 141         git config branch.master.merge  refs/heads/master
 142         git config core.excludesfile    ".gitignore.d/$REPO_NAME"
 143         git fetch
 144         for object in $(git ls-tree -r origin/master | awk '{print $4}'); do
 145                 [ -e "$object" ] &&
 146                         echo "$SELF: error: $object exists." &&
 147                         VCSH_CONFLICT=1;
 148         done
 149         [ "$VCSH_CONFLICT" = '1' ] &&
 150                 echo "$SELF: fatal: will stop after fetching and not try to merge!\n" &&
 151                 echo "  Once this situation has been resolved, run 'vcsh run <foo> git pull' to finish cloning.\n" &&
 152                 exit 3
 153         git merge origin/master
 154 #       vcsh use $REPO_NAME
 155         verbose "clone end"
 156
 157 elif [ "$1" = 'init' ]; then
 158         verbose "init begin"
 159         [ -z $2 ] && help && echo && echo "$SELF $1: error: please specify repository to work on" && return 0
 160         export REPO_NAME="$2"
 161         export GIT_DIR="$VCSH_BASE/$REPO_NAME.git"
 162         init
 163 #       vcsh use "$REPO_NAME"
 164         verbose "init end"
 165
 166 #elif [ "$1" = 'exit' ]; then
 167 #       verbose "exit begin"
 168 #       if [ -n "$ZSH_VERSION" ] && [ "$VCSH_NO_IGNORE_EOF" = '1' ]; then
 169 #               unset VCSH_NO_IGNORE_EOF
 170 #               setopt NO_IGNORE_EOF
 171 #       fi
 172 #       leave
 173 #       [ -n "$ZSH_VERSION" ] && [ "$USER" = richih ] && buildPS1
 174 #       verbose "exit end"
 175 #       exit 0
 176
 177 elif [ "$1" = 'seed-gitignore' ]; then
 178         verbose "seed-gitignore begin"
 179         [ -z $2 ] && help && echo && echo "$SELF $1: error: please specify repository to work on" && return 0
 180         use "$2"
 181         git config core.excludesfile ".gitignore.d/$REPO_NAME"
 182         files=$(git ls-files)
 183         gitignores=$(for file in $(git ls-files); do
 184                 while true; do
 185                         echo $file; new="${file%/*}"
 186                         [ "$file" = "$new" ] && break
 187                         file="$new"
 188                 done;
 189         done | sort -u | sed 's/^/!/')
 190         [ -e .gitignore.d/$2 ] &&
 191         echo "$SELF: info: .gitignore.d/$2 exists, moving it to .gitignore.d/$2.bak" &&
 192         mv -f .gitignore.d/$2 .gitignore.d/$2.bak
 193         echo '*' > .gitignore.d/$2
 194         for gitignore in $gitignores; do
 195                 echo $gitignore >> .gitignore.d/$2
 196         done
 197
 198 else
 199         verbose "defaulting to calling help()"
 200         help
 201         exit 3
 202
 203 fi
 204