#!/bin/sh
#
# Copyright 1995, by Hewlett-Packard Company
#
# The code in this file is from the book "Shell Programming
# Examples" by Bruce Blinn, published by Prentice Hall.
# This file may be copied free of charge for personal,
# non-commercial use provided that this notice appears in
# all copies of the file.  There is no warranty, either
# expressed or implied, supplied with this code.
#
# NAME
#    findstr - recursively search for a string
#
# SYNOPSIS
#    findstr [-iv] string [filename]
#
# DESCRIPTION
#    This command searches the files in the current
#    directory and its subdirectories for the string.  The
#    name of each file that contains the string is listed.
#
#    The string may be a simple string or it may be any
#    regular expression accepted by the grep command.  If
#    the string contains whitespace or any other
#    metacharacter, it must be quoted.
#
#    The search can be restricted to files with a particular
#    name by specifying the file name parameter.  This
#    parameter may contain wildcard characters to restrict
#    the search to file names that match a pattern, but the
#    file name must be quoted so that the wildcard
#    characters can be processed inside this command file
#    rather than being expanded into file names on the
#    command line.
#
#    -i   Ignore the case of the string.
#
#    -v   Verbose; list the lines that contain the string.
#         Without this option, only the names of the files
#         containing the string will be printed.
#
# RETURN VALUE
#    0    Successful completion
#    1    Usage error
#
############################################################
CMDNAME=`basename $0`
USAGE="Usage: $CMDNAME [-iv] string [filename]"
STRING=                  # String to search for
FILENAME=                # Name of the files to check
I=                       # Option for grep; Ignore case
L=-l                     # Option for grep; List names only

#
# Parse command options.
#
if [ "$OPTIND" = 1 ]; then
     while getopts iv OPT
     do
          case $OPT in
               i)   I=-i      # Ignore case
                    ;;
               v)   L=        # Verbose
                    ;;
               \?)  echo "$USAGE" 1>&2
                    exit 1
                    ;;
          esac
     done
     shift `expr $OPTIND - 1`
else
     USAGE="Usage: $CMDNAME [-i][-v] string [filename]"
     while :
     do
          case $1 in
               -i)  I=-i      # Ignore case
                    shift
                    ;;
               -v)  L=        # Verbose
                    shift
                    ;;
               --)  shift
                    break
                    ;;
               -*)  echo "$USAGE" 1>&2
                    exit 1
                    ;;
               *)   break
                    ;;
          esac
     done
fi

#
# Make sure the number of parameters is reasonable.
#
if [ $# -lt 1 -o $# -gt 2 ]; then
     echo "$USAGE" 1>&2
     exit 1
fi

STRING=$1
FILENAME=${2:-"*"}

find . \( -type f -o -type l \) -name "$FILENAME" -print |
     xargs -e grep $I $L -- "$STRING" /dev/null

exit 0