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Annotation of embedaddon/quagga/lib/memtypes.awk, revision 1.1

1.1     ! misho       1: # $Id: memtypes.awk,v 1.4 2006/03/30 14:30:19 paul Exp $
        !             2: #
        !             3: # Scan a file of memory definitions (see eg memtypes.c) and generate
        !             4: # a corresponding header file with an enum of the MTYPE's and declarations
        !             5: # for the struct memory_list arrays
        !             6: #
        !             7: # struct memory_list's must be declared as:
        !             8: # '\nstruct memory_list memory_list_<name>[] .....'
        !             9: #
        !            10: # Each MTYPE_ within the definition must the second token on the line,
        !            11: # tokens being delineated by whitespace. It may only consist of the set of
        !            12: # characters [[:upper:]_[:digit:]]. Eg:
        !            13: #
        !            14: # '\n  {  MTYPE_AWESOME_IPV8 , "Amazing new protocol, says genius" {}..boo'
        !            15: #
        !            16: # We try to ignore lines whose first token is /* or *, ie C comment lines.
        !            17: # So the following should work fine:
        !            18: #
        !            19: # '/* This is the best memory_list ever!
        !            20: # ' * It's got all my MTYPE's */
        !            21: # '
        !            22: # 'struct memory_list memory_list_my_amazing_mlist[] = =
        !            23: # '{
        !            24: # '  { MTYPE_DONGLE, "Dongle widget" }
        !            25: # '  { MTYPE_FROB, "Frobulator" },
        !            26: # '{  MTYPE_WIPPLE, "Wipple combombulator"}
        !            27: # '}}}
        !            28: #
        !            29: # Even if it isn't quite a valid C declaration.
        !            30: #
        !            31: 
        !            32: BEGIN {
        !            33:        mlistregex = "memory_list_(.*)\\[\\]";
        !            34:        mtyperegex = "^(MTYPE_[[:upper:]_[:digit:]]+).*";
        !            35:        header = "/* Auto-generated from memtypes.c by " ARGV[0] ". */\n";
        !            36:        header = header "/* Do not edit! */\n";
        !            37:        header = header "\n#ifndef _QUAGGA_MEMTYPES_H\n";
        !            38:        header = header "#define _QUAGGA_MEMTYPES_H\n";
        !            39:        footer = "\n#endif /* _QUAGGA_MEMTYPES_H */\n\n";
        !            40:        mlistformat = "extern struct memory_list memory_list_%s[];";
        !            41:        printf ("%s\n", header);
        !            42: }
        !            43: 
        !            44: # catch lines beginning with 'struct memory list ' and try snag the
        !            45: # memory_list name. Has to be 3rd field.
        !            46: ($0 ~ /^struct memory_list /) && (NF >= 3) {
        !            47:        mlists[lcount++] = gensub(mlistregex, "\\1", "g",$3);
        !            48: }
        !            49: 
        !            50: # snag the MTYPE, it must self-standing and the second field,
        !            51: # though we do manage to tolerate the , C seperator being appended
        !            52: ($1 !~ /^\/?\*/) && ($2 ~ /^MTYPE_/) { 
        !            53:        mtype[tcount++] = gensub(mtyperegex, "\\1", "g", $2);
        !            54: } 
        !            55: 
        !            56: END {
        !            57:        printf("enum\n{\n  MTYPE_TMP = 1,\n"); 
        !            58:        for (i = 0; i < tcount; i++) {
        !            59:                if (mtype[i] != "" && mtype[i] != "MTYPE_TMP")
        !            60:                        printf ("  %s,\n", mtype[i]);
        !            61:        }
        !            62:        printf ("  MTYPE_MAX,\n};\n\n");
        !            63:        for (i = 0; i < lcount; i++) {
        !            64:                if (mlists[i] != "")
        !            65:                        printf (mlistformat "\n", mlists[i]);
        !            66:        }
        !            67:        printf (footer);
        !            68: }