| 1 | #!/usr/bin/perl -w |
| 2 | |
| 3 | # |
| 4 | # checkcfguse.pl |
| 5 | # |
| 6 | # (1) finds all the Configure/config symbols |
| 7 | # |
| 8 | # (2) greps for their use in the core files and shows which ones. |
| 9 | # |
| 10 | |
| 11 | use strict; |
| 12 | use warnings; |
| 13 | |
| 14 | my %SYM; |
| 15 | |
| 16 | my @PAT = |
| 17 | ( |
| 18 | [ |
| 19 | # The format is: |
| 20 | # (1) aref of filename glob patterns |
| 21 | # (2) aref of qr patterns, the submatch $1 is the symbol name |
| 22 | [ |
| 23 | "config_h.SH", |
| 24 | ], |
| 25 | [ |
| 26 | qr/^#\$(\w+)\s+(\w+)/, |
| 27 | ], |
| 28 | ], |
| 29 | [ |
| 30 | [ |
| 31 | "NetWare/config_H.??", |
| 32 | "Porting/config.sh", |
| 33 | "plan9/config_h.sample", |
| 34 | "win32/config_H.??", |
| 35 | ], |
| 36 | qr{^(?:\Q/*\E)?#(?:define|undef)\s+(\w+)}, |
| 37 | ], |
| 38 | [ |
| 39 | [ |
| 40 | "configure.com", |
| 41 | ], |
| 42 | qr{^(\w+)="(?:define|undef)"}, |
| 43 | ], |
| 44 | ); |
| 45 | |
| 46 | { |
| 47 | print STDERR "$0: Looking for symbols...\n"; |
| 48 | for my $pat (@PAT) { |
| 49 | for my $fn (map { glob($_) } @{ $pat->[0] }) { |
| 50 | if (open(my $fh, '<', $fn)) { |
| 51 | while (<$fh>) { |
| 52 | for my $p (@$pat) { |
| 53 | for my $sym (/$p/g) { |
| 54 | $SYM{$sym}{$fn}++; |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | printf(STDERR "$0: Found %d symbols\n", scalar keys %SYM); |
| 64 | |
| 65 | print STDERR "$0: Looking for their uses...\n"; |
| 66 | |
| 67 | # Much too noisy grepping. |
| 68 | delete $SYM{'_'}; |
| 69 | delete $SYM{'const'}; |
| 70 | |
| 71 | my $SYM = join("|", sort { length($b) <=> length($a) || $a cmp $b } keys %SYM); |
| 72 | |
| 73 | open(my $mani, '<', "MANIFEST") or die "$0: Failed to open MANIFEST\n"; |
| 74 | |
| 75 | my %found; |
| 76 | while (<$mani>) { |
| 77 | if (/^(\S+)\s+/) { |
| 78 | my $fn = $1; |
| 79 | # Skip matches from the config files themselves, |
| 80 | # from metaconfig generated files that refer to |
| 81 | # the config symbols, and from pods. |
| 82 | next if $fn =~ m{^(?:config_h.SH|Configure|configure\.com|Porting/(?:config|Glossary)|(?:NetWare|plan9|win32)/(?:config|(?:GNU)?[Mm]akefile)|uconfig)|\.pod$}; |
| 83 | open my $fh, '<', $fn or die qq[$0: Failed to open $fn: $!]; |
| 84 | while (<$fh>) { |
| 85 | while (/\b($SYM)\b/go) { |
| 86 | $found{$1}{$fn}++; |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | for my $sym (sort keys %SYM) { |
| 93 | if (exists $found{$sym}) { |
| 94 | my @found = keys %{$found{$sym}}; |
| 95 | print "$sym\t", join(" ", sort @found), "\n"; |
| 96 | } else { |
| 97 | print "$sym\n"; |
| 98 | } |
| 99 | } |