update-dirs

#!/bin/sh
# usage: update-dirs <from-dir> <to-dir>
#   - given a path to a new version of a module (or core), and a path to existing verion,
#     1. copy files that are new or changed from new dir. to old dir.
#        - including creating new directories if necessary
#     2. note (echo) possibly vestigial files -- that is, files in <to-dir> that do not appear 
#        in <from-dir>.  (Does not look into .svn directories)
#
# example: update-dirs ~/temp/mymodule-6.10 ~/public_html/sites/all/modules/mymodule-6.9
# set -x
fromdir=$1
todir=$2
for fromfile in `find ${fromdir}`
do
  tofile=`echo "${fromfile}" | sed "s%${fromdir}%${todir}%g"`
  if [ ! -e "${tofile}" ]       # if target does not exist, then copy (or mkdir)
  then
      if [ -d ${fromfile} ]     # if source is a dir., do a mkdir
      then
	  echo "*** new directory: ${tofile}"
	  mkdir ${tofile}
      else
	  echo "*** new filey: ${tofile}"
	  cp -p ${fromfile} ${tofile}
      fi
  elif [ -z "`diff -bq ${fromfile} ${tofile}`" ]   # if from and to are diff, then copy
  then
      echo "** no diff: ${fromfile} ${tofile}"
  else
      echo "** updating file: ${tofile}"
      cp -p ${fromfile} ${tofile}
  fi
done

echo "looking for files that may be vestigial..."
for tofile in `find ${todir} \( -path '*/.svn' -prune \) -or -true `
do
  fromfile=`echo "${tofile}" | sed "s%${todir}%${fromdir}%g"`
  if [ ! -e "$fromfile" ]
  then
      echo "${tofile}"
  fi
done