mdw@git.distorted.org.uk Git - mLib/blob - man/mksofiles

   1 #! /bin/sh
   2 # -*-perl-*-
   3
   4 exec perl -x $0 "$@";
   5
   6 #! perl
   7
   8 # --- The idea ---
   9 #
  10 # Each manual page contains lines of the form
  11 #
  12 #   .\" @function
  13 #
  14 # for each function and macro documented in it.  This program sifts through
  15 # all of the `toplevel' manual pages and creates little manpages which
  16 # include the main text for each of the functions.
  17 #
  18 # The file `links' contains a generated list of little link manpages.  This
  19 # list is used for tidying (on a `make clean'), installing (for `make
  20 # install') and for pruning out old links when they're not needed any more.
  21
  22 %top = ();
  23 %so = ();
  24 if (open SO, "links") { while (<SO>) { chomp; $so{$_} = -1; } }
  25 if (open TOP, "toplevel") { while (<TOP>) { chomp; $top{$_} = -1; } }
  26
  27 foreach $f (@ARGV) {
  28   ($ext = $f) =~ s/^[^.]*\.//;
  29   next unless $ext =~ /^\d/;
  30   $sec = $&;
  31   open FILE, $f or die "open($f): $!";
  32   $top = 0;
  33   while (<FILE>) {
  34     chomp;
  35     next unless /^\.\\\"\s+\@/;
  36     $top = 1;
  37     $link = $';
  38     $full = "$link.$ext";
  39     next if $full eq $f;
  40     open OUT, ">$full" or die "open(>$full): $!";
  41     print OUT ".so man$sec/$f\n";
  42     close OUT;
  43     $so{$full}++;
  44   }
  45   $top{$f}++ if $top;
  46   close FILE;
  47 }
  48
  49 $write = 0;
  50 foreach $i (keys(%so)) {
  51   next if $so{$i} == 0;
  52   unlink $i if $so{$i} < 0;
  53   $write = 1;
  54 }
  55 if ($write) {
  56   open LINKS, ">links" or die "open(>links): $!";
  57   foreach $i (sort(keys(%so))) {
  58     print LINKS "$i\n" if $so{$i} >= 0;
  59   }
  60   close LINKS;
  61 }
  62
  63 $write = 0;
  64 foreach $i (keys(%top)) {
  65   $write = 1 unless $top{$i} == 0;
  66 }
  67 if ($write) {
  68   open TOP, ">toplevel" or die "open(>toplevel): $!";
  69   foreach $i (sort(keys(%top))) {
  70     print TOP "$i\n" if $top{$i} >= 0;
  71   }
  72   close TOP;
  73 }