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      1 # $NetBSD: gen_errno_tables.awk,v 1.3 2005/12/11 12:19:56 christos Exp $
      2 
      3 # Copyright (c) 1999 Christopher G. Demetriou.  All rights reserved.
      4 #
      5 # Redistribution and use in source and binary forms, with or without
      6 # modification, are permitted provided that the following conditions
      7 # are met:
      8 # 1. Redistributions of source code must retain the above copyright
      9 #    notice, this list of conditions and the following disclaimer.
     10 # 2. Redistributions in binary form must reproduce the above copyright
     11 #    notice, this list of conditions and the following disclaimer in the
     12 #    documentation and/or other materials provided with the distribution.
     13 # 3. All advertising materials mentioning features or use of this software
     14 #    must display the following acknowledgement:
     15 #      This product includes software developed by Christopher G. Demetriou
     16 #      for the NetBSD Project.
     17 # 4. The name of the author may not be used to endorse or promote products
     18 #    derived from this software without specific prior written permission
     19 #
     20 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30 
     31 # Currently this script works with either gawk or nawk.
     32 #
     33 # Use it like:
     34 #
     35 #	awk -f gen_errno_tables.awk -v PREFIX=OSF1 netbsd_errno_hdr \
     36 #	    osf1_errno_hdr
     37 #
     38 # It puts results into 'c' and 'h' in current directory, which can then be
     39 # incorporated into emulation header files.
     40 #
     41 # Note that this script is not meant to generate perfectly pretty output.
     42 # Wanna be a formatting weenie, hand-edit the output (or make the script
     43 # output perfectly pretty lists).
     44 
     45 BEGIN {
     46 	nr_offset = 0;
     47 	idx = 0;
     48 
     49 	printf "" > "c"
     50 	printf "" > "h"
     51 }
     52 
     53 NR != (FNR + nr_offset) {
     54 	printf("file switch\n");
     55 	if (idx != 0) {
     56 		exit 1
     57 	}
     58 	nr_offset = (NR - FNR)
     59 	idx = 1;
     60 }
     61 
     62 /^#[ \t]*define[ \t]+E[A-Z0-9]*[ \t]+[0-9]+/ {
     63 	if ($1 == "#define") {
     64 		name=$2
     65 		val=$3
     66 	} else {
     67 		name=$3
     68 		val=$4
     69 	}
     70 
     71 	if (val_max[idx] < val) {
     72 		val_max[idx] = val;
     73 	}
     74 	if (mappings[idx, "val", val] == "") {
     75 		mappings[idx, "name", name] = val
     76 		mappings[idx, "val", val] = name
     77 	}
     78 }
     79 
     80 END {
     81 	if (idx != 1) {
     82 		exit 1
     83 	}
     84 
     85 	printf("    0,\n") >> "c"
     86 	for (i = 1; i <= val_max[0]; i++) {
     87 		nb_name = mappings[0, "val", i]
     88 		if (nb_name != "") {
     89 			otheros_val = mappings[1, "name", nb_name]
     90 			if (otheros_val != "") {
     91 				printf("    %s_%s,\t\t/* %s (%d) -> %d */\n",
     92 				    PREFIX, nb_name, nb_name, i,
     93 				    otheros_val) >> "c"
     94 			} else {
     95 				printf("    %s_%s,\t\t/* %s (%d) has no equivalent */\n",
     96 				    PREFIX, "ENOSYS", nb_name, i) >> "c"
     97 			}
     98 		}
     99 	}
    100 
    101 	for (i = 1; i <= val_max[1]; i++) {
    102 		if (mappings[1, "val", i] != "") {
    103 			printf("#define %s_%s\t\t%d\n",
    104 			    PREFIX, mappings[1, "val", i], i) >> "h"
    105 		}
    106 	}
    107 }
    108