1 #!/usr/bin/perl 2 # 3 # Generate hash values for keywords 4 # 5 6 eval { use bytes; }; 7 8 while ( defined($keywd = <STDIN>) ) { 9 chomp $keywd; 10 11 ($keywd,$keywdname) = split(/\s+/, $keywd); 12 $keywdname = $keywd unless ( $keywdname ); 13 14 $l = length($keywd); 15 $h = 0; 16 for ( $i = 0 ; $i < $l ; $i++ ) { 17 $c = ord(substr($keywd,$i,1)) | 0x20; 18 $h = ((($h << 5)|($h >> 27)) ^ $c) & 0xFFFFFFFF; 19 } 20 if ( $seenhash{$h} ) { 21 printf STDERR "$0: hash collision (0x%08x) %s %s\n", 22 $h, $keywd, $seenhash{$h}; 23 } 24 $seenhash{$h} = $keywd; 25 printf("%-23s equ 0x%08x\n", "hash_${keywdname}", $h); 26 } 27
