~peter-pearse/ubuntu/natty/unzip/prop001

#!/bin/sh

#

#    zipgrep: Use unzip and egrep to search the specified members of a

# Zip archive for a string or pattern.  Search all members if no members

# are specified explicitly.  The script attempts to handle egrep's "-h"

# and "-l" options internally.

#

# This script assumes that the desired "unzip" and "egrep" (and "sed")

# programs are on the user's PATH.

#

pat=""

opt=""

while test $# -ne 0; do

  case "$1" in

  -e | -f) opt="$opt $1"; shift; pat="$1";;

  -*)      opt="$opt $1";;

   *)      if test -z "$pat"; then

             pat="$1"

           else

             break;

           fi;;

  esac

  shift

done

if test $# = 0; then

  echo usage: `basename "$0"` "[egrep_options] pattern zipfile [members...]"

  echo Uses unzip and egrep to search the zip members for a string or pattern.

  exit 1

fi

zipfile="$1"; shift

list=0

silent=0

opt=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`

case "$opt" in

  *l*) list=1; opt=`echo $opt | sed s/l//`

esac

case "$opt" in

  *h*) silent=1

esac

if test -n "$opt"; then

  opt="-$opt"

fi

status_grep_global=1

IFS='

'

# Escape shell-special characters in "pat".

pat=` echo "$pat" | \

 sed -e 's/\\\\/\\\\\\\\/g' -e 's/|/\\\|/g' -e 's/&/\\\&/g' `

# Use "unzip -Z1" to get a listing of the specified members from the

# specified archive.  Escape any backslashes in a file name.

for i in `unzip -Z1 "$zipfile" ${1+"$@"} | sed -e 's/\\\\/\\\\\\\\/g' `; do

  if test $list -eq 1; then

    # "-l": Show only the archive member name, not the matching line(s).

    unzip -p-L "$zipfile" "$i" | \

     egrep $opt "$pat" > /dev/null && echo "$i"

    status_grep=$?

  elif test $silent -eq 1; then

    # "-h": Show only the matching line(s), not the archive member name.

    # ("-s" in "opt" will silence "egrep", stopping all output.)

    unzip -p-L "$zipfile" "$i" | \

     egrep $opt "$pat"

    status_grep=$?

  else

    # Escape (or re-escape) shell-special characters in the archive

    # member name, "i".

    i=` echo "$i" | \

     sed -e 's/\\\\/\\\\\\\\/g' -e 's/|/\\\|/g' -e 's/&/\\\&/g' `

    # Globally, send fd 4 to stdout.  In the pipeline, send normal

    # stdout to fd 4, and send grep status to fd 3.  Collect fd 3

    # with ``.

    exec 4>&1

    status_grep=` ( \

     ( unzip -p-L "$zipfile" "$i" | \

     egrep $opt "$pat" 1>&4 ; echo $? >&3 ) 4>&1 | \

     sed "s|^|${i}:|" 1>&4 \

     ) 3>&1 `

  fi

  # Save the primary command status.  (May be the grep status.)

  sts=$?

  # If this grep status was zero, set the global grep status to zero.

  test "$status_grep" -eq 0 && status_grep_global=0

  # If this grep status was not zero or one, exit now.

  test "$status_grep" -gt 1 && exit "$status_grep"

done

# If "sts" is good (0), then exit with the global grep status.

# Else, when "sts" is bad, exit with the worst status we can find.

if test $sts -eq 0 ; then

  exit $status_grep_global

else

  if test "$status_grep" -gt 1 ; then

    exit "$status_grep"

  else

    exit $sts

  fi

fi