scripts/git/git-pull-all.sh

   1 #!/usr/bin/env bash
   2
   3 SCRIPT_NAME=$(basename "$0")
   4
   5 usage()
   6 {
   7   echo "$SCRIPT_NAME [-h] [-n]"
   8   echo
   9   echo "  arguments:"
  10   echo "   -h: show this help text"
  11   echo "   -n: dry run mode"
  12   echo "       (default: run commands)"
  13   echo
  14   echo " env vars:"
  15   echo "   required:"
  16   echo "   TOR_FULL_GIT_PATH: where the git repository directories reside."
  17   echo "       You must set this env var, we recommend \$HOME/git/"
  18   echo "       (default: fail if this env var is not set;"
  19   echo "       current: $GIT_PATH)"
  20   echo
  21   echo "   optional:"
  22   echo "   TOR_MASTER: the name of the directory containing the tor.git clone"
  23   echo "       The primary tor git directory is \$GIT_PATH/\$TOR_MASTER"
  24   echo "       (default: tor; current: $TOR_MASTER_NAME)"
  25   echo "   TOR_WKT_NAME: the name of the directory containing the tor"
  26   echo "       worktrees. The tor worktrees are:"
  27   echo "       \$GIT_PATH/\$TOR_WKT_NAME/{maint-*,release-*}"
  28   echo "       (default: tor-wkt; current: $TOR_WKT_NAME)"
  29   echo "   we recommend that you set these env vars in your ~/.profile"
  30 }
  31
  32 #################
  33 # Configuration #
  34 #################
  35
  36 # Don't change this configuration - set the env vars in your .profile
  37
  38 # Where are all those git repositories?
  39 GIT_PATH=${TOR_FULL_GIT_PATH:-"FULL_PATH_TO_GIT_REPOSITORY_DIRECTORY"}
  40 # The primary tor git repository directory from which all the worktree have
  41 # been created.
  42 TOR_MASTER_NAME=${TOR_MASTER_NAME:-"tor"}
  43 # The worktrees location (directory).
  44 TOR_WKT_NAME=${TOR_WKT_NAME:-"tor-wkt"}
  45
  46 ##########################
  47 # Git branches to manage #
  48 ##########################
  49
  50 set -e
  51 eval "$(git-list-tor-branches.sh -b)"
  52 set +e
  53
  54 # The main branch path has to be the main repository thus contains the
  55 # origin that will be used to fetch the updates. All the worktrees are created
  56 # from that repository.
  57 ORIGIN_PATH="$GIT_PATH/$TOR_MASTER_NAME"
  58
  59 COUNT=${#WORKTREE[@]}
  60
  61 #######################
  62 # Argument processing #
  63 #######################
  64
  65 # Controlled by the -n option. The dry run option will just output the command
  66 # that would have been executed for each worktree.
  67 DRY_RUN=0
  68
  69 while getopts "hn" opt; do
  70   case "$opt" in
  71     h) usage
  72        exit 0
  73        ;;
  74     n) DRY_RUN=1
  75        echo "    *** DRY DRUN MODE ***"
  76        ;;
  77     *)
  78        echo
  79        usage
  80        exit 1
  81        ;;
  82   esac
  83 done
  84
  85 #############
  86 # Constants #
  87 #############
  88
  89 # Control characters
  90 CNRM=$'\x1b[0;0m'   # Clear color
  91
  92 # Bright color
  93 BGRN=$'\x1b[1;32m'
  94 BBLU=$'\x1b[1;34m'
  95 BRED=$'\x1b[1;31m'
  96 BYEL=$'\x1b[1;33m'
  97 IWTH=$'\x1b[3;37m'
  98
  99 # Strings for the pretty print.
 100 MARKER="${BBLU}[${BGRN}+${BBLU}]${CNRM}"
 101 SUCCESS="${BGRN}ok${CNRM}"
 102 FAILED="${BRED}failed${CNRM}"
 103
 104 ####################
 105 # Helper functions #
 106 ####################
 107
 108 # Validate the given returned value (error code), print success or failed. The
 109 # second argument is the error output in case of failure, it is printed out.
 110 # On failure, this function exits.
 111 function validate_ret
 112 {
 113   if [ "$1" -eq 0 ]; then
 114     printf "%s\\n" "$SUCCESS"
 115   else
 116     printf "%s\\n" "$FAILED"
 117     printf "    %s" "$2"
 118     exit 1
 119   fi
 120 }
 121
 122 # Switch to the given branch name.
 123 function switch_branch
 124 {
 125   local cmd="git checkout $1"
 126   printf "  %s Switching branch to %s..." "$MARKER" "$1"
 127   if [ $DRY_RUN -eq 0 ]; then
 128     msg=$( eval "$cmd" 2>&1 )
 129     validate_ret $? "$msg"
 130   else
 131     printf "\\n      %s\\n" "${IWTH}$cmd${CNRM}"
 132   fi
 133 }
 134
 135 # Pull the given branch name.
 136 function merge_branch
 137 {
 138   local cmd="git merge --ff-only origin/$1"
 139   printf "  %s Merging branch origin/%s..." "$MARKER" "$1"
 140   if [ $DRY_RUN -eq 0 ]; then
 141     msg=$( eval "$cmd" 2>&1 )
 142     validate_ret $? "$msg"
 143   else
 144     printf "\\n      %s\\n" "${IWTH}$cmd${CNRM}"
 145   fi
 146 }
 147
 148 # Go into the worktree repository.
 149 function goto_repo
 150 {
 151   if [ ! -d "$1" ]; then
 152     echo "  $1: Not found. Stopping."
 153     exit 1
 154   fi
 155   cd "$1" || exit
 156 }
 157
 158 # Fetch the origin. No arguments.
 159 function fetch_origin
 160 {
 161   local cmd="git fetch origin"
 162   printf "%s Fetching origin..." "$MARKER"
 163   if [ $DRY_RUN -eq 0 ]; then
 164     msg=$( eval "$cmd" 2>&1 )
 165     validate_ret $? "$msg"
 166   else
 167     printf "\\n      %s\\n" "${IWTH}$cmd${CNRM}"
 168   fi
 169 }
 170
 171 ###############
 172 # Entry point #
 173 ###############
 174
 175 # Get into our origin repository.
 176 goto_repo "$ORIGIN_PATH"
 177
 178 # Fetch the origin.
 179 fetch_origin
 180
 181 # Go over all configured worktree.
 182 for ((i=0; i<COUNT; i++)); do
 183   current=${!WORKTREE[$i]:0:1}
 184   repo_path=${!WORKTREE[$i]:1:1}
 185
 186   printf "%s Handling branch %s\\n" "$MARKER" "${BYEL}$current${CNRM}"
 187
 188   # Go into the worktree to start merging.
 189   goto_repo "$repo_path"
 190   # Checkout the current branch
 191   switch_branch "$current"
 192   # Update the current branch by merging the origin to get the latest.
 193   merge_branch "$current"
 194 done