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Annotation of researchv10no/ipc/mgrs/ns/mkdb/parsehosts.sh, revision 1.1.1.1

1.1       root        1: echo Process $* 1>&2
                      2: cat $* | awk '
                      3: #
                      4: #      Parse hosts file.  Output format is
                      5: #              <uid> INET,<number> <name> <name> ...
                      6: #      merge entries with equivalent internet numbers
                      7: #
                      8: 
                      9: BEGIN {
                     10:        notinet = "[^0-9.]";
                     11: }
                     12: #
                     13: #      ignore blank and comment lines
                     14: #
                     15: $0 ~ /^#/      {next;}
                     16: NF>1 {
                     17: #      
                     18: #      check that internet address has only digits and '.'s
                     19: #
                     20:        if(match($1,notinet)) {
                     21:                print "Line " NR ": Illegal internet address " $1 | "cat 1>&2"
                     22:                next;
                     23: 
                     24:        }
                     25: #
                     26: #      label domains 
                     27: #
                     28:        line = "INET," $1;
                     29:        for (i=2; i<=NF; i++)
                     30:                if(match($i, ".com")){
                     31:                        line = line " DOMAIN," $i
                     32:                } else
                     33:                        line = line " " $i
                     34: #
                     35: #      output the line with an id #
                     36: #
                     37:        print line
                     38: }
                     39: '

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