pkgsrc-wip/pkg_summary-utils/files/pkg_grep_summary.in

#!@SH@
#-*-mode:  sh -*-

# Copyright (c) 2007-2008 Aleksey Cheusov <vle@gmx.net>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

set -e

usage (){
    cat 1>&2 <<EOF
pkg_grep_summary - output summaries about packages that matches
the specified condition.

USAGE: pkg_grep_summary -h
       pkg_grep_summary -e <field>
       pkg_grep_summary -m <field> <regexp>
       pkg_grep_summary -s <field> <string>
       pkg_grep_summary <field> <awk_condition>
  <field>         - PKGNAME, PKGPATH, DEPENDS etc.
  <awk_condition> - boolean expression written in AWK language
  <regexp>        - AWK regular expression
  <string>        - text string

OPTIONS:
  -h|--help   display this message
  -e|--empty  matches empty and absent fields only
                          (equivalent to '<field>' 'fvalue == ""')
  -m          matches <field> against regular expression <regexp>
  -s          matches <field> equal to <string>
EXAMPLES:
  pkg_grep_summary -s 'PKGPATH' 'devel/libjudy'
  pkg_grep_summary -m 'PKGPATH' '^wip/'
  pkg_grep_summary 'PKGNAME' 'fvalue ~ /judy/' \\
  pkg_grep_summary 'PKGPATH' 'fvalue ~ /^lang\//' \\
        < /usr/pkgsrc/packages/pkg_summary.txt
  pkg_grep_summary 'DEPENDS' 'fvalue ~ /libX/' \\
  pkg_grep_summary 'COMMENT' 'toupper(fvalue) ~ /DNS/' \\
  pkg_grep_summary -e 'NO_BIN_ON_FTP' \\
        < /usr/pkgsrc/pkg_src_summary.txt
  pkg_grep_summary -e 'NO_BIN_ON_CDROM'
EOF
}

while test $# -ne 0; do
    case "$1" in
	-h|--help)
	    usage
	    exit 0;;
	-e|--empty)
	    empty=1
	    field=$2
	    shift;;
	-s)
	    field=$2
	    string=$3
	    shift
	    shift;;
	-m)
	    field=$2
	    regex=$3
	    shift
	    shift;;
	--)
	    shift
	    break;;
	-*)
	    echo "Bad option $1" 1>&2
	    exit 1;;
	*)
	    break
    esac
    shift
done

if test -n "$empty"; then
    condition='fvalue == ""'
elif test -n "$string"; then
    condition="fvalue == \"$string\""
elif test -n "$regex"; then
    re=`echo $regex | sed 's|/|\\\/|g'`
    condition="fvalue ~ /$re/"
elif test $# -eq 2; then
    field="$1"
    condition="$2"
    shift
    shift
fi

if test -z "$condition" -o $# -ne 0; then
    usage
    exit 1
fi

runawk -e '
#use "pkg_grep_summary.awk"

BEGIN {
   grep_summary__field="'"$field"'"
}

function grep_summary__condition (){
   return '"$condition"'
}
'