Documentation/cmd-list.perl

   1 #!/usr/bin/perl -w
   2
   3 use File::Compare qw(compare);
   4
   5 sub format_one {
   6         my ($out, $nameattr) = @_;
   7         my ($name, $attr) = @$nameattr;
   8         my ($state, $description);
   9         my $mansection;
  10         $state = 0;
  11         open I, '<', "$name.txt" or die "No such file $name.txt";
  12         while (<I>) {
  13                 if (/^(?:git|scalar)[a-z0-9-]*\(([0-9])\)$/) {
  14                         $mansection = $1;
  15                         next;
  16                 }
  17                 if (/^NAME$/) {
  18                         $state = 1;
  19                         next;
  20                 }
  21                 if ($state == 1 && /^----$/) {
  22                         $state = 2;
  23                         next;
  24                 }
  25                 next if ($state != 2);
  26                 chomp;
  27                 $description = $_;
  28                 last;
  29         }
  30         close I;
  31         if (!defined $description) {
  32                 die "No description found in $name.txt";
  33         }
  34         if (my ($verify_name, $text) = ($description =~ /^($name) - (.*)/)) {
  35                 print $out "linkgit:$name\[$mansection\]::\n\t";
  36                 if ($attr =~ / deprecated /) {
  37                         print $out "(deprecated) ";
  38                 }
  39                 print $out "$text.\n\n";
  40         }
  41         else {
  42                 die "Description does not match $name: $description";
  43         }
  44 }
  45
  46 my ($input, @categories) = @ARGV;
  47
  48 open IN, "<$input";
  49 while (<IN>) {
  50         last if /^### command list/;
  51 }
  52
  53 my %cmds = ();
  54 for (sort <IN>) {
  55         next if /^#/;
  56
  57         chomp;
  58         my ($name, $cat, $attr) = /^(\S+)\s+(.*?)(?:\s+(.*))?$/;
  59         $attr = '' unless defined $attr;
  60         push @{$cmds{$cat}}, [$name, " $attr "];
  61 }
  62 close IN;
  63
  64 for my $out (@categories) {
  65         my ($cat) = $out =~ /^cmds-(.*)\.txt$/;
  66         open O, '>', "$out+" or die "Cannot open output file $out+";
  67         for (@{$cmds{$cat}}) {
  68                 format_one(\*O, $_);
  69         }
  70         close O;
  71
  72         if (-f "$out" && compare("$out", "$out+") == 0) {
  73                 unlink "$out+";
  74         }
  75         else {
  76                 print STDERR "$out\n";
  77                 rename "$out+", "$out";
  78         }
  79 }