Syncing local repo with remote

git-sync

#!/bin/bash
# Put this file to $PATH and then call it `git sync`
set -e

LANG=C
NC='\033[0m'
RED="${NC}\033[0;31m"
YLW="${NC}\033[1;33m"
WHI="${NC}\033[1;37m"
GRN="${NC}\033[1;32m"

log() {
  local text=$@
  echo -e "${WHI}[${GRN}SYNC${WHI}] ${text}${NC}"
}

err() {
  local text=$@
  echo -e "${WHI}[${RED}ERRO${WHI}] ${text}${NC}"
}

# Function to do nothing
noop() {
  local a=1
}

readonly curbr=$(git symbolic-ref --short HEAD)
readonly stashmsg="beforesync $(date +'%F %T')"
log "Current branch is ${curbr}..."
declare -x failed=false
declare -x uptodate=true

log "Stashing all changes..."
git stash push --include-untracked --quiet -m "${stashmsg}"

log "Fetching all changes from remote..."
git remote update origin --prune

log "Syncing all tracked branches..."
for branch in $(git for-each-ref --format='%(refname:short)' refs/heads); do
  # If not failed state
  if [ "${failed}" == "false" ]; then
    upstream=$(git rev-parse --abbrev-ref $branch@{upstream} 2>/dev/null)
    # If branch is tracked
    if [ $? -eq 0 ]; then
      # https://stackoverflow.com/a/3278427/1489324
      LOCAL=$(git rev-parse ${branch})
      REMOTE=$(git rev-parse "${branch}@{upstream}")
      BASE=$(git merge-base ${branch} "${branch}@{upstream}")

      if [ $LOCAL = $REMOTE ]; then
        #log "Branch \"$branch\" is up-to-date"
        noop
      elif [ $LOCAL = $BASE ]; then
        uptodate=false
        log "Syncing branch \"${branch}\"..."
        git checkout ${branch} --quiet;
        git pull --quiet;

        # If failed checkout or fetch or merge branch
        if [ $? -ne 0 ]; then
          failed=true
          err "Failed merge branch \"${branch}\""
          err "You need in hand mode merge branches:"
          err "  ${branch}"
        #else
        #  log "Synced branch \"${branch}\""
        fi
      fi
    fi
  # If failed state
  else
    err "  ${branch}"
  fi
done

if [ "${failed}" == "true" ]; then
  err "Then apply stash \"${stashmsg}\""
  err "At the end return tqo \"${curbr}\" branch"
  exit 1
fi

if [ "${uptodate}" == "true" ]; then
  log "All branches is up-to-date"
fi

log "Returning to branch \"${curbr}\"..."
git checkout ${curbr} --quiet

readonly stashid=$(git stash list | grep "$stashmsg" | cut -d: -f1)
if [ ! -z "${stashid}" -a "${stashid}" != " " ]; then
  log "Applying previously stashed changes..."
  git stash pop --quiet
fi