# $NetBSD: gen_errno_tables.awk,v 1.3 2005/12/11 12:19:56 christos Exp $

# $NetBSD: gen_errno_tables.awk,v 1.3 2005/12/11 12:19:56 christos Exp $

# Copyright (c) 1999 Christopher G. Demetriou. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
# must display the following acknowledgement:
# This product includes software developed by Christopher G. Demetriou
# for the NetBSD Project.
# 4. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Currently this script works with either gawk or nawk.
#
# Use it like:
#
# awk -f gen_errno_tables.awk -v PREFIX=OSF1 netbsd_errno_hdr \
# osf1_errno_hdr
#
# It puts results into 'c' and 'h' in current directory, which can then be
# incorporated into emulation header files.
#
# Note that this script is not meant to generate perfectly pretty output.
# Wanna be a formatting weenie, hand-edit the output (or make the script
# output perfectly pretty lists).

BEGIN {
nr_offset = 0;
idx = 0;

printf "" > "c"
printf "" > "h"
}

NR != (FNR + nr_offset) {
printf("file switch\n");
if (idx != 0) {
exit 1
}
nr_offset = (NR - FNR)
idx = 1;
}

/^#[ \t]*define[ \t]+E[A-Z0-9]*[ \t]+[0-9]+/ {
if ($1 == "#define") {
name=$2
val=$3
} else {
name=$3
val=$4
}

if (val_max[idx] < val) {
val_max[idx] = val;
}
if (mappings[idx, "val", val] == "") {
mappings[idx, "name", name] = val
mappings[idx, "val", val] = name
}
}

END {
if (idx != 1) {
exit 1
}

printf(" 0,\n") >> "c"
for (i = 1; i <= val_max[0]; i++) {
nb_name = mappings[0, "val", i]
if (nb_name != "") {
otheros_val = mappings[1, "name", nb_name]
if (otheros_val != "") {
printf(" %s_%s,\t\t/* %s (%d) -> %d */\n",
PREFIX, nb_name, nb_name, i,
otheros_val) >> "c"
} else {
printf(" %s_%s,\t\t/* %s (%d) has no equivalent */\n",
PREFIX, "ENOSYS", nb_name, i) >> "c"
}
}
}

for (i = 1; i <= val_max[1]; i++) {
if (mappings[1, "val", i] != "") {
printf("#define %s_%s\t\t%d\n",
PREFIX, mappings[1, "val", i], i) >> "h"
}
}
}