#!/bin/sh

# RecursiveGrep.sh
# Chieh Cheng
# 2000-9-14
# http://www.CynosureX.com/

# GNU General Public License (GPL), Version 2, June 1991

  scriptName=`echo "$0" | sed s/.*\\\\///g`

usage ()
{
  echo "  Usage:   ${scriptName} [ -d depth ] \"expression\" [ \"file mask 1\" ... \"file mask N\" ]"
}

if [ $# -lt 1 ]
then
  usage
else
  depthSet=0
  depth=0

  while getopts d: ch
  do
    case $ch in
      d) depthSet=1
         depth=$OPTARG

         if [ $# -lt 3 ]
         then
           usage
           exit 2
         fi
        ;;
    
    \?) usage
        exit 2
      ;;
    esac
  done
  shift `expr $OPTIND - 1`

  executable=`AbsoluteName.sh "$0"`
  searchString="$1"

  if [ $# -eq 1 ]
  then
    fileNameSpec="*"
  else
    shift
    fileNameSpec="$@"
  fi

  currentPath=`pwd`/

  dumpfile=`GetTempPathName.ksh "${scriptName}"`
  ls -1 ${fileNameSpec} 2> "${dumpfile}" |
  while read entry
  do
    if [ -f "${entry}" ]
    then
      result=`grep "$searchString" "${entry}"`
      if [ "${result}" != "" ]
      then
        pwd=`pwd`
        printf '%s/%s : \n' "${pwd}" "${entry}"
        echo "${result}"
        printf '\n'
      fi
    fi
  done
  rm "${dumpfile}"

  if [ ${depthSet} -eq 0 ] || [ ${depth} -gt 0 ]
  then
    if [ ${depthSet} -eq 1 ]
    then
      depth=`expr ${depth} - 1`
      flags="-d ${depth}"
    else
      flags=""
    fi

    # recurse into sub directory
    ls -1 |
    while read entry
    do
      if [ -d "${entry}" ]
      then
        if [ -x "${entry}" ]
        then
          cd "${entry}"
          "${executable}" ${flags} "${searchString}" "${fileNameSpec}"
          cd ..
        else
          echo "No permission to enter ${entry}."
        fi
      fi
    done  
  fi
fi