1#  Copyright (C) 2003-2022 Free Software Foundation, Inc.
2#  Contributed by Kelley Cook, June 2004.
3#  Original code from Neil Booth, May 2003.
4#
5# This program is free software; you can redistribute it and/or modify it
6# under the terms of the GNU General Public License as published by the
7# Free Software Foundation; either version 3, or (at your option) any
8# later version.
9#
10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13# GNU General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
16# along with this program; see the file COPYING3.  If not see
17# <http://www.gnu.org/licenses/>.
18
19# This Awk script takes a list of *.opt files and combines them into
20# a three-field sorted list suitable for input into opt[ch]-gen.awk.
21#
22# Usage: awk -f opt-gather.awk file1.opt [...] > outputfile
23
24function sort(ARRAY, ELEMENTS)
25{
26          for (i = 2; i <= ELEMENTS; ++i) {
27                    for (j = i; ARRAY[j-1] > ARRAY[j]; --j) {
28                              temp = ARRAY[j]
29                              ARRAY[j] = ARRAY[j-1]
30                              ARRAY[j-1] = temp
31                    }
32          }
33          return
34}
35
36BEGIN {   numrec = 0 }
37
38# Ignore comments and blank lines
39/^[ \t]*(;|$)/  { flag = 0; next }
40/^[^ \t]/       { if (flag == 0) {
41                    record[++numrec] = $0
42                        flag = 1 }
43                      else {
44                        record[numrec] = record[numrec] SUBSEP $0
45                    }
46}
47
48# Sort it and output it
49END {
50          sort(record,numrec)
51
52          for (i = 1; i <= numrec; i++) {
53                    print record[i] }
54}
55