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

#!@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 <FIELD> <AWK_CONDITION>
       pkg_grep_summary -e <FIELD>
  <FIELD>         - PKGNAME, PKGPATH, DEPENDS etc.
  <AWK_CONDITION> - boolean expression written in AWK language

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

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

if test -z "$empty_field" -a $# -ne 2 ||
    test -n "$empty_field" -a $# -ne 0
then
    usage
    exit 1
fi

if test -z "$empty_field"; then
    field=$1
    condition="$2"
    shift
    shift
else
    field="$empty_field"
    condition='fvalue == ""'
fi

runawk -e '
#use "pkg_grep_summary.awk"

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

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