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#  Copyright (C) 2003, 2004, 2007 Free Software Foundation, Inc.

#  Contributed by Kelley Cook, June 2004.

#  Original code from Neil Booth, May 2003.

#

# This program is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License as published by the

# Free Software Foundation; either version 3, or (at your option) any

# later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; see the file COPYING3.  If not see

# <http://www.gnu.org/licenses/>.

# This Awk script takes a list of *.opt files and combines them into

# a three-field sorted list suitable for input into opt[ch]-gen.awk.

#

# Usage: awk -f opt-gather.awk file1.opt [...] > outputfile

function sort(ARRAY, ELEMENTS)

{

        for (i = 2; i <= ELEMENTS; ++i) {

                for (j = i; ARRAY[j-1] > ARRAY[j]; --j) {

                        temp = ARRAY[j]

                        ARRAY[j] = ARRAY[j-1]

                        ARRAY[j-1] = temp

                }

        }

        return

}

BEGIN { numrec = 0 }

# Ignore comments and blank lines

/^[ \t]*(;|$)/  { flag = 0; next }

/^[^ \t]/       { if (flag == 0) {

                    record[++numrec] = $0

                    flag = 1 }

                  else {

                    record[numrec] = record[numrec] SUBSEP $0

                  }

}

# Sort it and output it

END {

        sort(record,numrec)

        for (i = 1; i <= numrec; i++) {

                print record[i] }

}