scripts/git/git-pull-all.sh

   1 #!/bin/bash
   2
   3 ##################################
   4 # User configuration (change me) #
   5 ##################################
   6
   7 # The general setup that is suggested here is:
   8 #
   9 #   GIT_PATH = /home/<user>/git/
  10 #     ... where the git repository directories resides.
  11 #   TOR_MASTER_NAME = "tor"
  12 #     ... which means that tor.git was cloned in /home/<user>/git/tor
  13 #   TOR_WKT_NAME = "tor-wkt"
  14 #     ... which means that the tor worktrees are in /home/<user>/git/tor-wkt
  15
  16 # Where are all those git repositories?
  17 GIT_PATH="FULL_PATH_TO_GIT_REPOSITORY_DIRECTORY"
  18 # The tor master git repository directory from which all the worktree have
  19 # been created.
  20 TOR_MASTER_NAME="tor"
  21 # The worktrees location (directory).
  22 TOR_WKT_NAME="tor-wkt"
  23
  24 #########################
  25 # End of configuration. #
  26 #########################
  27
  28 # Configuration of the branches that needs merging. The values are in order:
  29 #   (1) Branch name to pull (update).
  30 #   (2) Full path of the git worktree.
  31 #
  32 # As an example:
  33 #   $ cd <PATH/TO/WORKTREE> (3)
  34 #   $ git checkout maint-0.3.5 (1)
  35 #   $ git pull
  36 #
  37 # First set of arrays are the maint-* branch and then the release-* branch.
  38 # New arrays need to be in the WORKTREE= array else they aren't considered.
  39 MAINT_029=( "maint-0.2.9" "$GIT_PATH/$TOR_WKT_NAME/maint-0.2.9" )
  40 MAINT_034=( "maint-0.3.4" "$GIT_PATH/$TOR_WKT_NAME/maint-0.3.4" )
  41 MAINT_035=( "maint-0.3.5" "$GIT_PATH/$TOR_WKT_NAME/maint-0.3.5" )
  42 MAINT_040=( "maint-0.4.0" "$GIT_PATH/$TOR_WKT_NAME/maint-0.4.0" )
  43 MAINT_MASTER=( "master" "$GIT_PATH/$TOR_MASTER_NAME" )
  44
  45 RELEASE_029=( "release-0.2.9" "$GIT_PATH/$TOR_WKT_NAME/release-0.2.9" )
  46 RELEASE_034=( "release-0.3.4" "$GIT_PATH/$TOR_WKT_NAME/release-0.3.4" )
  47 RELEASE_035=( "release-0.3.5" "$GIT_PATH/$TOR_WKT_NAME/release-0.3.5" )
  48 RELEASE_040=( "release-0.4.0" "$GIT_PATH/$TOR_WKT_NAME/release-0.4.0" )
  49
  50 # The master branch path has to be the main repository thus contains the
  51 # origin that will be used to fetch the updates. All the worktrees are created
  52 # from that repository.
  53 ORIGIN_PATH="$GIT_PATH/$TOR_MASTER_NAME"
  54
  55 ##########################
  56 # Git Worktree to manage #
  57 ##########################
  58
  59 # List of all worktrees to work on. All defined above. Ordering is important.
  60 # Always the maint-* branch first then the release-*.
  61 WORKTREE=(
  62   MAINT_029[@]
  63   RELEASE_029[@]
  64
  65   MAINT_034[@]
  66   RELEASE_034[@]
  67
  68   MAINT_035[@]
  69   RELEASE_035[@]
  70
  71   MAINT_040[@]
  72   RELEASE_040[@]
  73
  74   MAINT_MASTER[@]
  75 )
  76 COUNT=${#WORKTREE[@]}
  77
  78 # Controlled by the -n option. The dry run option will just output the command
  79 # that would have been executed for each worktree.
  80 DRY_RUN=0
  81
  82 # Control characters
  83 CNRM=$'\x1b[0;0m'   # Clear color
  84
  85 # Bright color
  86 BGRN=$'\x1b[1;32m'
  87 BBLU=$'\x1b[1;34m'
  88 BRED=$'\x1b[1;31m'
  89 BYEL=$'\x1b[1;33m'
  90 IWTH=$'\x1b[3;37m'
  91
  92 # Strings for the pretty print.
  93 MARKER="${BBLU}[${BGRN}+${BBLU}]${CNRM}"
  94 SUCCESS="${BGRN}ok${CNRM}"
  95 FAILED="${BRED}failed${CNRM}"
  96
  97 ####################
  98 # Helper functions #
  99 ####################
 100
 101 # Validate the given returned value (error code), print success or failed. The
 102 # second argument is the error output in case of failure, it is printed out.
 103 # On failure, this function exits.
 104 function validate_ret
 105 {
 106   if [ "$1" -eq 0 ]; then
 107     printf "%s\\n" "$SUCCESS"
 108   else
 109     printf "%s\\n" "$FAILED"
 110     printf "    %s" "$2"
 111     exit 1
 112   fi
 113 }
 114
 115 # Switch to the given branch name.
 116 function switch_branch
 117 {
 118   local cmd="git checkout $1"
 119   printf "  %s Switching branch to %s..." "$MARKER" "$1"
 120   if [ $DRY_RUN -eq 0 ]; then
 121     msg=$( eval "$cmd" 2>&1 )
 122     validate_ret $? "$msg"
 123   else
 124     printf "\\n      %s\\n" "${IWTH}$cmd${CNRM}"
 125   fi
 126 }
 127
 128 # Pull the given branch name.
 129 function merge_branch
 130 {
 131   local cmd="git merge --ff-only origin/$1"
 132   printf "  %s Merging branch origin/%s..." "$MARKER" "$1"
 133   if [ $DRY_RUN -eq 0 ]; then
 134     msg=$( eval "$cmd" 2>&1 )
 135     validate_ret $? "$msg"
 136   else
 137     printf "\\n      %s\\n" "${IWTH}$cmd${CNRM}"
 138   fi
 139 }
 140
 141 # Go into the worktree repository.
 142 function goto_repo
 143 {
 144   if [ ! -d "$1" ]; then
 145     echo "  $1: Not found. Stopping."
 146     exit 1
 147   fi
 148   cd "$1" || exit
 149 }
 150
 151 # Fetch the origin. No arguments.
 152 function fetch_origin
 153 {
 154   local cmd="git fetch origin"
 155   printf "  %s Fetching origin..." "$MARKER"
 156   if [ $DRY_RUN -eq 0 ]; then
 157     msg=$( eval "$cmd" 2>&1 )
 158     validate_ret $? "$msg"
 159   else
 160     printf "\\n      %s\\n" "${IWTH}$cmd${CNRM}"
 161   fi
 162 }
 163
 164 ###############
 165 # Entry point #
 166 ###############
 167
 168 while getopts "n" opt; do
 169   case "$opt" in
 170     n) DRY_RUN=1
 171        echo "    *** DRY DRUN MODE ***"
 172        ;;
 173     *)
 174        ;;
 175   esac
 176 done
 177
 178 # First, fetch the origin.
 179 goto_repo "$ORIGIN_PATH"
 180 fetch_origin
 181
 182 # Go over all configured worktree.
 183 for ((i=0; i<COUNT; i++)); do
 184   current=${!WORKTREE[$i]:0:1}
 185   repo_path=${!WORKTREE[$i]:1:1}
 186
 187   printf "%s Handling branch %s\\n" "$MARKER" "${BYEL}$current${CNRM}"
 188
 189   # Go into the worktree to start merging.
 190   goto_repo "$repo_path"
 191   # Checkout the current branch
 192   switch_branch "$current"
 193   # Update the current branch by merging the origin to get the latest.
 194   merge_branch "$current"
 195 done