rsync-host

#!/bin/bash
## 
## Calculates a path relative to the home directory.  That path is used to Sync 
## folders with a remote host.  
## 
## Home directories may differ, but the path relative to the home directory 
## is the same.  Under this configuration, it becomes simple to create and
## use the sync commands based on the current working directory.  
## 
## Unless you force it, this script will always preview and prompt before 
## actually making changes.
## 
## Example:
##     /home/doej/projects/examples$ rscp host_alias (get|put)
## OR
##     /home/doej/projects/examples$ rscp host_alias (get|put) [path/]file
## 
## Sync ~/projects/examples from host_alias account with 
## current directory (also ~/projects/examples).  
## 
## host_alias can be some short made-up alias; interactivly prompt and record 
## the host and user.
## 
## get - sync from server to local directory
## put - sync from local directory to server
## 
## -f, force  - skip the the dry-run and 'are you sure'
## -e, echo   - just echo the command and exit
## -d, delete - delete extraneous files from dest dir
## 
## Suffix commands to the main command: get-f, get-e, get-fed

#############
#Environment
#
alias=$1
cmd=$2
path=$3
. $(dirname $0)/prj-env $alias,user,host
user_host=$user${user:+@}$host

if test $# -lt 2 || test ! $(echo $cmd | egrep "get|put") 
then
   # Show usage above
   sh $(dirname $0)/prj-usage $0
   exit 1 #1=error
fi

IFS='-' read -ra ARRAY <<< "$cmd"
cmd=${ARRAY[0]} # get-fc becomes just "get"
parms=${ARRAY[1]}
echo $parms | grep "f" > /dev/null && force=
echo $parms | grep "e" > /dev/null && echo=
echo $parms | grep "d" > /dev/null && rsync_parms="$rsync_parms --delete"

if [[ $path == /* ]]
then
  # User is providing a more specific path and does not
  # want to the relative home dir path.  
  specific_path=
else
  #Example: /home/jcalfee/bin becomes ~/bin
  rsync_path=`pwd|sed "s?$HOME?~?g"`
fi


test -f .rsync_includes && 
  rsync_parms="$rsync_parms --include-from=.rsync_includes"
  
test -f .rsync_excludes && 
  rsync_parms="$rsync_parms --exclude-from=.rsync_excludes"
  
test -f .rsync_filters && 
  rsync_parms="$rsync_parms --filter='merge .rsync_filters'"

#############
function rsync_run {
  rsync_cmd=$1
  if test -n "${echo+x}"
  then
    if test -n "${force+x}"
    then
      echo rsync $rsync_cmd 
    else
      echo rsync $rsync_cmd --dry-run
    fi
    return
  fi
  tmp=`mktemp /tmp/rsync.XXXXXXXX`
  trap 'rm $tmp' EXIT
  
  if test -n "${force+x}"
  then
    echo rsync $rsync_cmd > $tmp
    sh $tmp
  else
    echo rsync $rsync_cmd --dry-run | tee $tmp
    sh $tmp
    read -p "Proceed (y/n)? " yn
    case $yn in
      [Yy] )
        echo rsync $rsync_cmd > $tmp
        sh $tmp
        ;;
      [Nn] ) return 1;;
      * ) echo "Please answer y or n.";;
    esac
  fi
}

#########
# Main
#
case "$cmd" in
get*) 
  echo DOWNLOAD...
  if test -z ${specific_path+x}
  then
    rsync_run "$rsync_parms --compress -e ssh -va \"$user_host${user_host:+:}$rsync_path/$path\" \"${path:-.}\""
  else
    rsync_run "$rsync_parms --compress -e ssh -va \"$user_host${user_host:+:}$path\" ."
  fi
;;
put*)
  if test -n "${echo+x}"
  then
     echo ${host:+ssh $user_host} mkdir -vp "$rsync_path"
  else
     # Do not mkdir if a specific path was provided
     if test -n ${specific_path+x}
     then
       ${host:+ssh $user_host} mkdir -vp "$rsync_path"
     fi 
  fi
  echo UPLOAD...
  if test -z ${specific_path+x}
  then
    rsync_run "$rsync_parms --compress -e ssh -va \"${path:-.}\" \"$user_host${user_host:+:}$rsync_path/$path\""
  else
    rsync_run "$rsync_parms --compress -e ssh -va . \"$user_host${user_host:+:}$path\""
  fi
;;

esac