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# Recursive grep
# This script accepts a search pattern and greps for that pattern
# in all text files within the current directory (and all subdirectories
# within it).  It outputs a list of files containing the pattern,
# a list of directories searched, and the full grep output.
# It then allows you to vim the list of files containing the pattern
# or the files themselves.
#
# P.S.  It might have been faster to use find to get the full list of
# files instead of cd'ing back and forth, but I like this because it
# starts searching right away and doesn't require building some mondo
# file list.
#
# Syntax:  regrep <pattern>
#   cd to top directory before running
#

if test "$1" = ""
then
  echo "# Syntax:  regrep <pattern>
  (cd to top directory before running)"
  exit
fi

# Initialize some variables
pattern="$1"           # Searched for pattern
outfile=/tmp/out$$     # File saving grep output
dirfile=/tmp/dir$$     # File saving directories searched
filelist=/tmp/list$$   # File saving list of files containing pattern
dircount=1             # Count of directories searched
foundcount=0           # Count of files containing pattern



# Define a function
recursivegrep () {
for node in `ls`
do
  if test -d $node
  then
    # If node is a directory, move into directory and call
    # this function
    dircount=`expr $dircount + 1`
    cd $node
    echo -n ". "
    pwd >> $dirfile
    recursivegrep
    cd ..
  else
    # If file is an ascii file, grep for pattern and include
    # filename and line number (tee output to standard out and
    # append to file).
    if test -f $node
    then
      if found=`grep -i -n -H $pattern $node`
      then
        foundcount=`expr $foundcount + 1`
        echo -n "$node($foundcount) "
        echo "DIRECTORY:`pwd`
$found" >> $outfile
        echo "`pwd`/$node" >> $filelist
      fi
    fi
  fi
done
}


# Create output files
>$outfile
>$filelist
echo "DIRECTORIES SEARCHED" > $dirfile
pwd >> $dirfile
eoldos [+]
echo "
Directories searched will be stored in $dirfile
Files containing $pattern will be stored in $outfile
Dots show directories being searched
filename(n) is a file containing $pattern and current (count) of files
"~
:~
# Start recursively grepin'
echo -n "Starting search at: `pwd` "
recursivegrep


echo -n "

Directories searched: $dircount
Files found containing "$pattern": $foundcount
Directories searched stored in: $dirfile
List of files containing "$pattern" stored in $filelist
Grep output stored in: $outfile

   v - vim the list of files containing "$pattern"
   f - vim the actual files containing "$pattern"
   r - remove these temporary output files
   q - quit

Enter option: "
read reply
case "$reply" in
  v) vim $filelist  ;;
  f) vim `cat $filelist` ;;
  r) rm $outfile $dirfile $filelist ;;
esac